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Contents
- 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 daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another chilly winter month in Iwakuni, Japan, with temperature in the range of an average low of 2.8°C (37°F) and an average high of 7.6°C (45.7°F). The coldest period tends to be January, when average temperatures fluctuate between a high of 7.6°C (45.7°F) and a low of 2.8°C (37°F). Weather in January »
Weather in February
February, the last month of the winter in Iwakuni, is also a frosty month, with an average temperature ranging between max 8.4°C (47.1°F) and min 3.1°C (37.6°F). The shift into February records an average high-temperature of a still chilly 8.4°C (47.1°F), subtly varied from January's 7.6°C (45.7°F). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Iwakuni, Japan, with an average temperature ranging between max 11.9°C (53.4°F) and min 5.7°C (42.3°F). Iwakuni's weather shows a minor temperature rise with the arrival of March, moving from a frosty 8.4°C (47.1°F) in February to a cool 11.9°C (53.4°F). Weather in March »
Weather in April
April is an enjoyable spring month in Iwakuni, Japan, with an average temperature fluctuating between 9.2°C (48.6°F) and 16.2°C (61.2°F). In April, the average high-temperature marginally rises from a cool 11.9°C (53.4°F) in March to a comfortable 16.2°C (61.2°F). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Iwakuni, Japan, with an average temperature ranging between max 20.9°C (69.6°F) and min 13.8°C (56.8°F). Iwakuni, Japan, in May experiences a slight uptick in the average high-temperature, adjusting from April's refreshing 16.2°C (61.2°F) to an agreeable 20.9°C (69.6°F). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Iwakuni, Japan, with an average temperature fluctuating between 17.8°C (64°F) and 23.6°C (74.5°F). Transitioning into June, Iwakuni records an average high-temperature of a warm 23.6°C (74.5°F), almost identical to May's 20.9°C (69.6°F). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Iwakuni, Japan, with temperature in the range of an average low of 22.2°C (72°F) and an average high of 27.1°C (80.8°F). With the transition into July, Iwakuni experiences a subtle uplift in average high-temperatures, adjusting from 23.6°C (74.5°F) in June to a still moderately hot 27.1°C (80.8°F). Weather in July »
Weather in August
August, the last month of the summer in Iwakuni, is also a moderately hot month, with an average temperature varying between 29.2°C (84.6°F) and 23.4°C (74.1°F). Iwakuni's warmest month, August, registers temperatures that range from a high of 29.2°C (84.6°F) to a low of 23.4°C (74.1°F). For most parts of August, the heat index is computed to be a fiery hot 36°C (96.8°F). Weather in August »
Weather in September
September, the first month of the autumn in Iwakuni, is still a warm month, with an average temperature fluctuating between 19.7°C (67.5°F) and 25.5°C (77.9°F). The transition to September results in a modest reduction in average high-temperature, moving from 29.2°C (84.6°F) in August to a still warm 25.5°C (77.9°F). Weather in September »
Weather in October
October, like September, is another pleasant autumn month in Iwakuni, Japan, with temperature in the range of an average low of 15°C (59°F) and an average high of 20.9°C (69.6°F). In Iwakuni, the beginning of October is marked by a marginally lowered average high-temperature, shifting from September's warm 25.5°C (77.9°F) to an agreeable 20.9°C (69.6°F). Weather in October »
Weather in November
November, the last month of the autumn in Iwakuni, is another mild month, with temperature in the range of an average high of 15.4°C (59.7°F) and an average low of 9.9°C (49.8°F). November's arrival correlates with a reduction in the average high-temperature, down from an agreeable 20.9°C (69.6°F) in October to a moderate 15.4°C (59.7°F). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Iwakuni, Japan, with an average temperature fluctuating between 9.6°C (49.3°F) and 4.9°C (40.8°F). The onset of December comes with a shift in the average high-temperature, falling from a refreshing 15.4°C (59.7°F) in November to a chilly 9.6°C (49.3°F). 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 is the coldest time of year in Iwakuni?
The coldest month in Iwakuni is January, with an average high-temperature of 7.6°C (45.7°F) and an average low-temperature of 2.8°C (37°F).
How much does it rain in Iwakuni?
Throughout the year, there are 161.2 rainfall days, and 650mm (25.59") of precipitation is accumulated.
When does it snow in Iwakuni?
Months with snowfall are January through March and December.
When does it snow the most in Iwakuni?
January is the month with the most snowfall. Snow falls for 4.8 days and accumulates 13mm (0.51") of snow.
How much does it snow in Iwakuni?
In Iwakuni, during the entire year, snow falls for 10.4 days and aggregates up to 29mm (1.14") of snow.
What is the month with the least sunshine in Iwakuni?
January has the least sunshine of the year, with an average of 5h of sunshine.
What are the months with the lowest UV index in Iwakuni?
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Iwakuni, Japan.
What is the least humid month in Iwakuni?
March is the least humid month, with an average relative humidity of 73%.
When it does not snow in Iwakuni?
In Iwakuni, snow does not fall in April through November.
When are the longest days in Iwakuni?
With an average of 14h and 24min of daylight, June has the longest days of the year.
What is the most humid month in Iwakuni?
The most humid month is July, with an average relative humidity of 86%.
What is the rainiest month in Iwakuni?
The month with the most rainfall in Iwakuni, Japan, is July, when the rain falls for 20 days and typically aggregates up to 137mm (5.39") of precipitation.
What is the month with the highest UV index in Iwakuni?
July is the month with the highest UV index in Iwakuni, with an average maximum UV index of 7.
What is the warmest month in Iwakuni?
Iwakuni's temperature records reveal August as the warmest month, marked by average highs of 29.2°C (84.6°F) and lows of 23.4°C (74.1°F).
What month has the most sunshine in Iwakuni?
The month with the most sunshine in Iwakuni, Japan, is August, with an average of 10.6h of sunshine.
What is the driest month in Iwakuni?
The month with the least rainfall is November, when the rain falls for 10.4 days and typically collects 24mm (0.94") of precipitation.
What is the month with the shortest days in Iwakuni?
With an average of 9h and 54min of daylight, December has the shortest days of the year in Iwakuni.
Is there Daylight Saving Time (DST) in Iwakuni?
Iwakuni, Japan, does not observe Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Iwakuni, Japan
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (7.6°C).
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure
Iwakuni, Japan
- Average pressure in January:
1021.2mbar - Average pressure in February:
1020.7mbar - Average pressure in March:
1018.3mbar - Average pressure in April:
1015.2mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1008.4mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009mbar - Average pressure in September:
1012.5mbar - Average pressure in October:
1017mbar - Average pressure in November:
1020.2mbar - Average pressure in December:
1020.8mbar
The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed
Iwakuni, Japan
- Average wind speed in January:
11.8km/h - Average wind speed in February:
10.7km/h - Average wind speed in March:
10.5km/h - Average wind speed in April:
9.4km/h - Average wind speed in May:
7.8km/h - Average wind speed in June:
6.7km/h
- Average wind speed in July:
7.4km/h - Average wind speed in August:
7.2km/h - Average wind speed in September:
8km/h - Average wind speed in October:
9.8km/h - Average wind speed in November:
9.5km/h - Average wind speed in December:
11.3km/h
The windiest month (with the highest average wind speed) is January (11.8km/h).
The calmest month (with the lowest average wind speed) is June (6.7km/h).
Average humidity
Iwakuni, Japan
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (73%).
Average rainfall
Iwakuni, Japan
The wettest month (with the highest rainfall) is July (137mm).
The driest month (with the least rainfall) is November (24mm).
Average rainfall days
Iwakuni, Japan
- Average rainfall days in January:
13.1 days - Average rainfall days in February:
11.7 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
10.6 days - Average rainfall days in June:
16.4 days
- Average rainfall days in July:
20 days - Average rainfall days in August:
17.1 days - Average rainfall days in September:
13.9 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
14.3 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is October (9.7 days).
Average snowfall
Iwakuni, Japan
The month with the highest snowfall is January (13mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Iwakuni, Japan
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.4 days - Average snowfall days in April:
0 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:
0 days - Average snowfall days in December:
2.5 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Iwakuni, Japan
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
5h and 4min - Average sunshine in March:
7h and 3min - Average sunshine in April:
9h and 1min - Average sunshine in May:
9h and 4min - Average sunshine in June:
8h and 5min
- Average sunshine in July:
9h and 1min - Average sunshine in August:
10h and 4min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 2min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days
Iwakuni, Japan
- Average sunshine days in January:
13.6 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
16.7 days - Average sunshine days in April:
16 days - Average sunshine days in May:
19 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
10.1 days - Average sunshine days in September:
12.9 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
12.9 days
The month with the most sunshine days is May (19 days).
The month with the least sunshine days is July (8.8 days).
Average UV index
Iwakuni, Japan
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Iwakuni, Japan
The months with the most cloud cover are January and June (Cloud cover 43).
The months with the least cloud cover are August and October (Cloud cover 31).
Average visibility
Iwakuni, Japan
The months with the highest visibility are January, February, March, September, October, November and December (10km).
The month with the lowest visibility is July (8km).
Iwakuni, Japan
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