Yearly & Monthly weather - Udon Thani, Thailand

The climate of Udon Thani

Udon Thani, in Thailand, experiences a predominant Köppen climate classification of Aw, which is defined as tropical wet and dry or savanna. This climate, typical of regions situated 17.53°N latitude and 102.79°E longitude, is characterized primarily by significant rainfall during specific periods and high temperatures throughout the year.

Throughout the year, Udon Thani experiences high temperatures. The warmest month, with an average high of 36.3°C (97.3°F), occurs in April while the coolest, December, averages a high of 29.1°C (84.4°F). The low temperatures, similarly, range from 24.9°C (76.8°F) in July and August to 16.4°C (61.5°F) in December. The city, thus, is generally hot throughout the year, experiencing minimal fluctuations in temperature between months.

Relative humidity in Udon Thani varies during the course of a year. The highest percentage of relative humidity is seen from August to October with an average rate of 81%, while February sees the lowest at 63%. Rainfall is another significant weather parameter in this region. The majority of the precipitation generally occurs during the monsoon season spanning from May to October, with the heaviest rainfall recorded in September, averaging at 235mm (9.25").

Days in Udon Thani are generally long with the shortest amount of daylight in December, at 11.1 hours, and the longest in June at 13.2 hours. However, the amount of sunshine varies, peaking at 9 hours in January and February and dipping to a low of 5 hours from June through September. Meanwhile, the UV index, a measure of the strength of the sun's harmful rays, remains consistent throughout the year.

The best time to visit Udon Thani

Those considering a visit to Udon Thani will find ideal weather conditions from December to February. During these months, Udon Thani receives the least amount of rainfall, averaging between 6mm (0.24") and 9mm (0.35"), coupled with moderate temperatures averaging between 29.1°C (84.4°F) to 32.4°C (90.3°F). The humidity is also relatively lower at this time, spanning from 65% to 63%.

The worst time to visit Udon Thani

Unfavorable weather conditions are predominant from May through September. This period is characterized by high rainfall, especially in September when it reaches a high of 235mm (9.25"). During these months, the city experiences high humidity, averaging at 78%, and reduced hours of sunshine, decreasing to an average of 5 hours per day.

Spring weather in Udon Thani

In Udon Thani, spring occurs between March and May. Temperatures during this season range from a high of 34.9°C (94.8°F) to 36.3°C (97.3°F) and low temperatures vary from 21.9°C (71.4°F) to 24.8°C (76.6°F). Rainfall starts to increase, with May experiencing the start of the monsoon season with a significant rise from 39mm (1.54") to 199mm (7.83").

Summer weather in Udon Thani

Summer spans June through August in Udon Thani. During this period, temperatures hover around a high of 33.2°C (91.8°F) to 32.6°C (90.7°F) and low temperatures range from 25°C (77°F) to 24.9°C (76.8°F). This season experiences the height of the monsoon season, with rainfall peaking to 185mm (7.28") in August.

Autumn weather in Udon Thani

Autumn in Udon Thani spans from September to November. During this period, temperatures range from highs of 32°C (89.6°F) to 30.7°C (87.3°F) and from lows of 24.6°C (76.3°F) to 19.7°C (67.5°F). Rainfall still holds significant, but starts to taper off, decreasing from 235mm (9.25") in September to 20mm (0.79") in November.

Winter weather in Udon Thani

Winter in Udon Thani, lasting from December to February, witnesses relatively lower temperatures. Highs range from 29.1°C (84.4°F) to 32.4°C (90.3°F) and lows from 16.4°C (61.5°F) to 18.9°C (66°F). This season sees the least rainfall with an average of 6mm (0.24") to 16mm (0.63"). Hence, winter presents Udon Thani in its dry and cool state.

Weather in January

In Udon Thani, Thailand, January brings a harmonious blend of mild temperatures and serene skies. This month sees an uptick in relative humidity from 65% to 63%, offering a palpable respite from the dry spell of December. The region experiences little rainfall, with January being the month with the least amount of rainfall, 6mm (0.24"). Weather in January »

Weather in February

Transitioning into February, the climate in Udon Thani takes a gentle turn to warmer conditions. The region experiences a noticeable rise in both minimum and maximum temperatures, resulting in warm days and cool nights. With a significant increase in rainfall to 16mm (0.63"), February marks the onset of the pre-monsoon period. Weather in February »

Weather in March

March in Udon Thani heralds the arrival of notably warmer weather accompanied by a marked upswing in rainfall to a substantial 39mm (1.54"). This upswing indicates the transition to the pre-monsoon phase, with both daytime and nighttime temperatures hitting new highs. Weather in March »

Weather in April

As Udon Thani steps into April, the weather becomes significantly hotter, touching the year's highest temperatures. Accordingly, days turn hotter, while nights remain warm, indicative of the peak dry season. Weather transitions are marked by heavy rainfall, hitting a yearly high at 103mm (4.06"), which is a sharp contrast to March's rainfall. Weather in April »

Weather in May

Moving into May, Udon Thani witnesses a slight dip in temperature, accompanied by a drastic surge in humidity to 74%. The city is drenched in the highest rainfall of the year at 199mm (7.83"), signifying the heavy monsoon onset. Despite the rain showers, daylight hours rise to their peak, as do the sun's lingering presence, allowing for warm, sunny afternoons. Weather in May »

Weather in June

June brings with it a subtle cooling effect to Udon Thani, with temperatures dipping slightly from the preceding month. With no significant changes to the astronomical hours of daylight, Udon Thani continues to enjoy long, sunny days, albeit with reduced illuminance. Weather in June »

Weather in July

In July, Udon Thani's weather slackens its pace, giving tourists and locals time to enjoy the tropical ambiance fully. From the temperatures to the amount of rainfall at 146mm (5.75"), the city experiences a lower intensity of weather phenomena. Weather in July »

Weather in August

August weather in Udon Thani continues to mirror that of July, with warm temperatures and copious amounts of rainfall at 185mm (7.28"). The city sees an uptick in relative humidity to 81%, reaffirming the continuation of the rain-rich monsoons. Weather in August »

Weather in September

The arrival of September in Udon Thani brings with it a retreat of the monsoon, characterized by reduced rainfall, yet it remains high at 235mm (9.25"). While temperatures remain comfortably warm during the day and at night, the city sees a drop in daylight hours. Weather in September »

Weather in October

As October sets in, Udon Thani bids goodbye to the monsoon season, marked by a significant reduction in rainfall to 123mm (4.84"), and relative humidity dipping to 76%. However, the city continues to experience warm temperatures throughout the day and night. Weather in October »

Weather in November

In November, Udon Thani transitions towards its cooler season, with decreasing temperatures, reduced rainfall to a mere 20mm (0.79"), and receding humidity. The daylight hours decrease but remain ample, providing generous amounts of sunshine that add a warm tint to the nippy weather. Weather in November »

Weather in December

Lastly, Udon Thani welcomes December with the year's coolest temperatures, paving the way for a cool winter atmosphere. With rainfall dropping further to 9mm (0.35"), the region enters a pronounced dry phase, with sunny skies and consistent daylight prevalent. Weather in December »

Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the driest month in Udon Thani?

January is the month with the least rainfall in Udon Thani, Thailand. Rain falls for 1 days and accumulates 6mm (0.24") of precipitation.

How many days does it rain in Udon Thani?

In Udon Thani, Thailand, during the entire year, the rain falls for 118 days and collects up to 1241mm (48.86") of precipitation.

What are the months with the most sunshine in Udon Thani?

January, February and December, with an average of 9h of sunshine, are months with the most sunshine in Udon Thani, Thailand.

What is the least humid month in Udon Thani?

With an average relative humidity of 60%, March is the least humid month.

What are the months with the highest UV index in Udon Thani?

March through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the hottest time of year in Udon Thani?

The warmest time of the year in Udon Thani, Thailand, is April, with temperatures averaging a high of 36.3°C (97.3°F) and a low of 24.4°C (75.9°F).

When are the longest days in Udon Thani?

The month with the longest days in Udon Thani is June, with an average of 13h and 12min of daylight.

What are the months with the least sunshine in Udon Thani?

The months with the least sunshine are June through September, with an average of 5h of sunshine.

What is the most humid month in Udon Thani?

The months with the highest humidity in Udon Thani, Thailand, are August and September, with an average relative humidity of 81%.

What is the wettest month in Udon Thani?

September is the month with the most rainfall in Udon Thani. Rain falls for 18 days and accumulates 235mm (9.25") of precipitation.

What is the coldest month in Udon Thani?

December, on average, is the coldest month in Udon Thani, Thailand, registering a high temperature of 29.1°C (84.4°F) and a low of 16.4°C (61.5°F).

What is the month with the shortest days in Udon Thani?

The month with the shortest days is December, with an average of 11h and 6min of daylight.

Is there Daylight Saving Time (DST) in Udon Thani?

Udon Thani does not utilize Daylight Saving Time (DST). +07 timezone is used over the entire year.

What is the month with the lowest UV index in Udon Thani?

The month with the lowest UV index is December, with an average maximum UV index of 8.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N D

Average temperature
Udon Thani, Thailand

Average high temperature in January:
30°C
Average high temperature in February:
32.4°C
Average high temperature in March:
34.9°C
Average high temperature in April:
36.3°C
Average high temperature in May:
34.4°C
Average high temperature in June:
33.2°C

Average high temperature in July:
32.6°C
Average high temperature in August:
32°C
Average high temperature in September:
31.9°C
Average high temperature in October:
31.6°C
Average high temperature in November:
30.7°C
Average high temperature in December:
29.1°C

The warmest month (with the highest average high temperature) is April (36.3°C).
The month with the lowest average high temperature is December (29.1°C).

Average low temperature in January:
16.5°C
Average low temperature in February:
18.9°C
Average low temperature in March:
21.9°C
Average low temperature in April:
24.4°C
Average low temperature in May:
24.8°C
Average low temperature in June:
25°C

Average low temperature in July:
24.9°C
Average low temperature in August:
24.6°C
Average low temperature in September:
24.2°C
Average low temperature in October:
22.9°C
Average low temperature in November:
19.7°C
Average low temperature in December:
16.4°C

The month with the highest average low temperature is June (25°C).
The coldest month (with the lowest average low temperature) is December (16.4°C).

Average humidity
Udon Thani, Thailand

The months with the highest relative humidity are August and September (81%).
The month with the lowest relative humidity is March (60%).

Average rainfall
Udon Thani, Thailand

The wettest month (with the highest rainfall) is September (235mm).
The driest month (with the least rainfall) is January (6.3mm).

Average rainfall days
Udon Thani, Thailand

Average rainfall days in January:
1 days
Average rainfall days in February:
3 days
Average rainfall days in March:
4 days
Average rainfall days in April:
8 days
Average rainfall days in May:
16 days
Average rainfall days in June:
18 days

Average rainfall days in July:
18 days
Average rainfall days in August:
21 days
Average rainfall days in September:
18 days
Average rainfall days in October:
8 days
Average rainfall days in November:
2 days
Average rainfall days in December:
1 days

The month with the highest number of rainy days is August (21 days).
The months with the least rainy days are January and December (1 days).

Average daylight / Average sunshine
Udon Thani, Thailand

Average daylight in January:
11h and 1min
Average daylight in February:
11h and 4min
Average daylight in March:
12h and 0min
Average daylight in April:
12h and 3min
Average daylight in May:
12h and 5min
Average daylight in June:
13h and 1min

Average daylight in July:
13h and 1min
Average daylight in August:
12h and 4min
Average daylight in September:
12h and 1min
Average daylight in October:
11h and 4min
Average daylight in November:
11h and 2min
Average daylight in December:
11h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

The months with the most sunshine are January, February and December (Average sunshine: 9h).
The months with the least sunshine are June, July, August and September (Average sunshine: 5h).

Average UV index
Udon Thani, Thailand

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

Climate and monthly weather forecastUdon Thani, Thailand

Contents