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Contents
- The climate of Ansan
- The best time to visit Ansan
- The worst time to visit Ansan
- Spring weather in Ansan
- Summer weather in Ansan
- Autumn weather in Ansan
- Winter weather in Ansan
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Ansan
Ansan, located in South Korea, features a Humid subtropical climate with a dry winter, as classified by the Köppen climate classification system where it falls under the Cwa category. This climate type is characterized by high humidity, especially during the summer months, and significant variation in temperature throughout the year. The city experiences warm summers, cold winters, and a pronounced period of rainfall.
Temperature levels in Ansan range from an average high of 29.2°C (84.6°F) in August down to an average low of -5°C (23°F) in January. April through September bring temperatures above 15°C (59°F), with July and August getting the hottest. It cools significantly from October, signaling the approach of winter and frigid conditions. The humidity varies discernibly across the year, the highest levels seen around July with about 81%, tapering off to 58% during February and March.
Rainfall patterns follow an interesting trend, with the highest precipitation of 182mm (7.17") in July and the least in January, down to 13mm (0.51"). In contrast, snowfall is observed only from November to March with February seeing the most snow-related activity at a significant 46mm (1.81"). Clear skies dominate the early and late parts of the year, while cloud cover increases during the monsoon period from July through August.
Temperature levels in Ansan range from an average high of 29.2°C (84.6°F) in August down to an average low of -5°C (23°F) in January. April through September bring temperatures above 15°C (59°F), with July and August getting the hottest. It cools significantly from October, signaling the approach of winter and frigid conditions. The humidity varies discernibly across the year, the highest levels seen around July with about 81%, tapering off to 58% during February and March.
Rainfall patterns follow an interesting trend, with the highest precipitation of 182mm (7.17") in July and the least in January, down to 13mm (0.51"). In contrast, snowfall is observed only from November to March with February seeing the most snow-related activity at a significant 46mm (1.81"). Clear skies dominate the early and late parts of the year, while cloud cover increases during the monsoon period from July through August.
The best time to visit Ansan
Ascertaining the best time to visit Ansan requires a balance between the weather aspects and visitor preferences. From a climate standpoint, the most favorable period extends from April to June. During these months, temperatures remain moderate between 9.8°C (49.6°F) to 26.1°C (79°F) and experience relatively low precipitation rates. The humidity levels are also mild, thus offering a comfortable environment for outdoor exploring and participating in local activities.
The worst time to visit Ansan
Ansan's climatic conditions makes the period from July to August the least favorable for visitors. During these months, rainfall peaks, leading to 182mm (7.17") and 152mm (5.98") of precipitation in each month, respectively. Combined with the highest humidity levels of the year, the city experiences a hot and exceedingly damp climate. Simultaneously, the temperature ascends to its yearly peak, crossing 27°C (80.6°F) and complicating outdoor activities.
Spring weather in Ansan
Spring in Ansan spans from March to May, bringing a moderate climate with temperatures ranging between 2.4°C (36.3°F) to 21.8°C (71.2°F). The rainfall starts increasing, reaching 51mm (2.01") by May, while humidity also gains pace. March is the driest month of the Spring season and extends an average daylight duration of 12 hours. With enjoyable weather and adequate sunshine, it presents a wonderful time for outdoor endeavors and sightseeing.
Summer weather in Ansan
June to August constitutes the summer months in Ansan. With temperatures soaring between 17.7°C (63.9°F) to 29.2°C (84.6°F) and high humidity, it translates to a hot and humid climate. July and August are the wettest months of the year, with 182mm (7.17") and 152mm (5.98") of rainfall respectively. The daylight quotient is also the highest during this season, offering as much as 14.7 hours in June.
Autumn weather in Ansan
September to November are the autumn months in Ansan, showing a significant reduction in temperature from 17.5°C (63.5°F) to 5.1°C (41.2°F). While September still experiences substantial rainfall, the levels decrease significantly over the subsequent months. The cloud coverage starts to abate, promising ample daylight hours and moderate temperatures. Autumn, therefore, is also an ideal time to explore the city's scenic beauty.
Winter weather in Ansan
Winter in Ansan occurs from December to February, with the temperature falling as low as -5°C (23°F) in January, its coldest month. While the precipitation levels are at their lowest during the year, the city witnesses snowfall peaking at 46mm (1.81") in February. Despite the relatively cold conditions and limited daylight hours, the winter season offers unique experiences, especially around snow-related activities.
Weather in January
January ushers in the new year with cold weather in Ansan, South Korea. Temperatures begin to drop below freezing, with average lows reaching -5°C (23°F). While snowfall is not uncommon during this period, the area experiences up to 29mm (1.14") of snow across approximately five days of the month. Weather in January »
Weather in February
As February progresses, temperatures in Ansan slowly increase from the chilly month of January. Albeit marginal, this gradual transition into spring is accompanied by a consistent snowfall. Notwithstanding these colder conditions, sunshine hours also see a slight increase, a hopeful hint of the changing seasons. Weather in February »
Weather in March
Springtime truly begins in March, where warmer temperatures become more noticeable in Ansan. March experiences a significant jump in average high temperatures, reaching up to 9.8°C (49.6°F). An increase in rainfall occurs during this period, indicating the transition from winter to spring. Weather in March »
Weather in April
As April unfolds, the arrival of spring is in full swing with warming temperatures and lengthening daylight hours in Ansan. The increase in temperature is accompanied by a notable rise in rainfall, amounting to 37mm (1.46") across nine days. Weather in April »
Weather in May
May witnesses a considerable increase in temperatures, the highest since the start of the year, in Ansan. With average highs soaring to 21.8°C (71.2°F), people begin to feel the early signs of summer. This rise in temperature is paralleled by longer daylight hours and increased humidity, making the overall mood bright and lively. Weather in May »
Weather in June
June ushers in the first summer month in Ansan, South Korea. This period sees a notable increase in rainfall, marking the onset of the summer monsoon showers experienced with average rainfall reaching 76mm (2.99"). With the increased downpour, the humidity witnesses a significant rise, making the atmosphere muggy and moist. Weather in June »
Weather in July
July is the peak of summer in Ansan, with temperatures reaching a sweltering 27.9°C (82.2°F). This increase in temperature coincides with the highest amount of rainfall, which averages around 182mm (7.17"). These climatic conditions characterize the monsoon season, evoking a tropical feel in the city. Weather in July »
Weather in August
In August, Ansan experiences the highest temperatures of the year, touching 29.2°C (84.6°F) on average. This rise is accompanied by high levels of humidity, contributing to the sultry atmosphere. The weather in August matches that of July in terms of rainfall and temperature. Weather in August »
Weather in September
September ushers in autumn in Ansan, with a gentle decline in temperature. Rainfall becomes relatively less frequent, as the summer monsoon season begins to wane. Despite this, humidity levels remain high, and the weather can be relatively warm in the early part of the month. Weather in September »
Weather in October
October in Ansan is a beautiful time, characterized by crisp air and vibrant foliage. Average temperatures hover around a comfortable range, striking a delicate balance between warmth and chill. This pleasant weather allows for outdoor activities to be carried out without the intense heat or humidity. Weather in October »
Weather in November
November in Ansan sees a noticeable shift toward colder conditions, with temperatures taking a dip, the prelude to the harsh winter. An average low temperature of 5.1°C (41.2°F) gradually sets in, lending the city a chilly atmosphere. Weather in November »
Weather in December
December rounds off the year with the return of winter in Ansan. Average low temperatures plummet to -2.6°C (27.3°F), and snowfall begins in earnest, boasting around 36mm (1.42") over the period of six days. The snowy landscapes coupled with the plummeting temperatures create a seasonal, festive feel. Weather in December »
Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Ansan?
Ansan notes the coldest temperatures in January, with a average high of 0.6°C (33.1°F) and a low of -5°C (23°F).
What is the driest month in Ansan?
The month with the least rainfall is January, when the rain falls for 3.3 days and typically collects 13mm (0.51") of precipitation.
How many days does it rain in Ansan?
Throughout the year, there are 115.1 rainfall days, and 748mm (29.45") of precipitation is accumulated.
When does it snow in Ansan?
January through April, November and December are months with snowfall in Ansan, South Korea.
How much does it snow in Ansan?
In Ansan, South Korea, during the entire year, snow falls for 18.2 days and aggregates up to 137mm (5.39") of snow.
What are the months with the lowest UV index in Ansan?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Ansan, South Korea.
What is the least humid month in Ansan?
February and March, with an average relative humidity of 58%, are the least humid months in Ansan.
When does it snow the most in Ansan?
The month with the most snowfall in Ansan is February, when snow falls for 3.3 days and typically aggregates up to 46mm (1.81") of snow.
What is the month with the coldest sea water in Ansan?
February is the month with the coldest seawater, with an average sea temperature of 3.3°C (37.9°F).
When it does not snow in Ansan?
In Ansan, South Korea, snow does not fall in May through October.
When are the longest days in Ansan?
The month with the longest days is June, with an average of 14h and 42min of daylight.
What month has the most sunshine in Ansan?
June has the most sunshine of the year in Ansan, with an average of 10.3h of sunshine.
What are the months with the highest UV index in Ansan?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Ansan.
What is the most humid month in Ansan?
July is the most humid month in Ansan, South Korea, with an average relative humidity of 81%.
What is the wettest month in Ansan?
The month with the most rainfall in Ansan is July, when the rain falls for 19.5 days and typically aggregates up to 182mm (7.17") of precipitation.
What is the warmest month in Ansan?
The warmest temperatures in Ansan occur during August, when averages reach a peak of 29.2°C (84.6°F) and a low of 22.3°C (72.1°F).
What is the month with the warmest sea water in Ansan?
With an average sea temperature of 23.4°C (74.1°F), August is the month with the warmest seawater.
What is the month with the least sunshine in Ansan?
November and December, with an average of 5.8h of sunshine, are months with the least sunshine.
What is the month with the shortest days in Ansan?
The month with the shortest days in Ansan is December, with an average of 9h and 36min of daylight.
Is there Daylight Saving Time (DST) in Ansan?
Ansan, South Korea, does not observe Daylight Saving Time (DST). KST timezone is used over the entire year.
Average temperature
Ansan, South Korea
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (0.6°C).
The month with the highest average low temperature is August (22.3°C).
The coldest month (with the lowest average low temperature) is January (-5°C).
Average pressure
Ansan, South Korea
- Average pressure in January:
1025.3mbar - Average pressure in February:
1023.6mbar - Average pressure in March:
1019.8mbar - Average pressure in April:
1015.3mbar - Average pressure in May:
1011.3mbar - Average pressure in June:
1007.7mbar
- Average pressure in July:
1007mbar - Average pressure in August:
1008.3mbar - Average pressure in September:
1013.9mbar - Average pressure in October:
1019.4mbar - Average pressure in November:
1022.3mbar - Average pressure in December:
1024.3mbar
The month with the highest atmospheric pressure is January (1025.3mbar).
The month with the lowest atmospheric pressure is July (1007mbar).
Average wind speed
Ansan, South Korea
- Average wind speed in January:
10.2km/h - Average wind speed in February:
10.5km/h - Average wind speed in March:
11.6km/h - Average wind speed in April:
11km/h - Average wind speed in May:
9.8km/h - Average wind speed in June:
8km/h
- Average wind speed in July:
9.1km/h - Average wind speed in August:
8.7km/h - Average wind speed in September:
8km/h - Average wind speed in October:
9km/h - Average wind speed in November:
10.2km/h - Average wind speed in December:
11km/h
The windiest month (with the highest average wind speed) is March (11.6km/h).
The calmest months (with the lowest average wind speed) are June and September (8km/h).
Average humidity
Ansan, South Korea
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are February and March (58%).
Average rainfall
Ansan, South Korea
The wettest month (with the highest rainfall) is July (182mm).
The driest month (with the least rainfall) is January (13mm).
Average rainfall days
Ansan, South Korea
- Average rainfall days in January:
3.3 days - Average rainfall days in February:
3.5 days - Average rainfall days in March:
6.8 days - Average rainfall days in April:
9.3 days - Average rainfall days in May:
9.1 days - Average rainfall days in June:
12.2 days
- Average rainfall days in July:
19.5 days - Average rainfall days in August:
19.3 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
6.4 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is January (3.3 days).
Average snowfall
Ansan, South Korea
The month with the highest snowfall is February (46mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Ansan, South Korea
- Average snowfall days in January:
5.4 days - Average snowfall days in February:
3.3 days - Average snowfall days in March:
1.5 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
6.3 days
The month with the highest number of snowfall days is December (6.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature
Ansan, South Korea
The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (3.3°C).
Average daylight / Average sunshine
Ansan, South Korea
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
7h and 4min - Average sunshine in March:
8h and 2min - Average sunshine in April:
8h and 5min - Average sunshine in May:
10h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
8h and 0min - Average sunshine in August:
9h and 1min - Average sunshine in September:
8h and 2min - Average sunshine in October:
7h and 2min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 48min).
Average sunshine days
Ansan, South Korea
- Average sunshine days in January:
23.8 days - Average sunshine days in February:
22 days - Average sunshine days in March:
23 days - Average sunshine days in April:
19.8 days - Average sunshine days in May:
20.6 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
9.1 days - Average sunshine days in August:
8.5 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
23 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
20.9 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is August (8.5 days).
Average UV index
Ansan, South Korea
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Ansan, South Korea
The month with the most cloud cover is July (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility
Ansan, South Korea
The months with the highest visibility are January, February, March, April, October, November and December (10km).
The month with the lowest visibility is July (8km).
Ansan, South Korea
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