Expand
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, the same as December, in Iwamizawa, Japan, is another subzero cold winter month, with an average temperature ranging between max -3.7°C (25.3°F) and min -10.2°C (13.6°F). Iwamizawa records the coldest temperatures in January, averaging a high of -3.7°C (25.3°F) and a low of -10.2°C (13.6°F). Weather in January »
Weather in February
February, the last month of the winter in Iwamizawa, is another freezing cold month, with an average temperature varying between -3.2°C (26.2°F) and -10.6°C (12.9°F). Entering February, the average high-temperature is recorded at a still freezing cold -3.2°C (26.2°F), exhibiting a minimal shift from January's -3.7°C (25.3°F). Weather in February »
Weather in March
March, the first month of the spring in Iwamizawa, is a cold month, with an average temperature ranging between min -6.5°C (20.3°F) and max 1.1°C (34°F). Iwamizawa's transition into March is marked by a minor temperature shift, moving from a freezing cold -3.2°C (26.2°F) in February to a cold 1.1°C (34°F). Weather in March »
Weather in April
April in Iwamizawa, Japan, is a chilly spring month, with temperature in the range of an average high of 8.7°C (47.7°F) and an average low of 0.8°C (33.4°F). April signals a shift in the average high-temperature, moving from March's wintry 1.1°C (34°F) to a frosty 8.7°C (47.7°F). Weather in April »
Weather in May
May, the last month of the spring in Iwamizawa, is a comfortable month, with temperature in the range of an average low of 6.3°C (43.3°F) and an average high of 16°C (60.8°F). May brings a rise in Iwamizawa's average high-temperature, moving from a chilly 8.7°C (47.7°F) in April to a refreshing 16°C (60.8°F). Weather in May »
Weather in June
The first month of the summer, June, is still a refreshing month in Iwamizawa, Japan, with temperature in the range of an average low of 10.5°C (50.9°F) and an average high of 19.9°C (67.8°F). As June begins, there's a slight increase in the average high-temperature, moving from an enjoyable 16°C (60.8°F) in May to a still refreshing 19.9°C (67.8°F). Weather in June »
Weather in July
July is a warm summer month in Iwamizawa, Japan, with an average temperature ranging between min 14.8°C (58.6°F) and max 23.9°C (75°F). With the onset of July, Iwamizawa's weather sees a minor temperature rise, transitioning from a comfortable 19.9°C (67.8°F) in June to a warm 23.9°C (75°F). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Iwamizawa, Japan, with an average temperature varying between 24.2°C (75.6°F) and 15.8°C (60.4°F). Iwamizawa notes the warmest temperatures in August, with a high average of 24.2°C (75.6°F) and a low of 15.8°C (60.4°F). Weather in August »
Weather in September
September, the first month of the autumn in Iwamizawa, is still a pleasant month, with an average temperature varying between 12°C (53.6°F) and 20.4°C (68.7°F). September reveals a small adjustment in temperature, transitioning from an average high of a warm 24.2°C (75.6°F) in August to an agreeable 20.4°C (68.7°F). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Iwamizawa, Japan, with temperature in the range of an average high of 13.4°C (56.1°F) and an average low of 5.4°C (41.7°F). In Iwamizawa, entering October brings a temperature decrement, reducing from September's pleasant 20.4°C (68.7°F) to a refreshing 13.4°C (56.1°F). Weather in October »
Weather in November
November, the last month of the autumn in Iwamizawa, is another cold month, with an average temperature ranging between max 5.5°C (41.9°F) and min -0.1°C (31.8°F). November's onset corresponds with a shift in the average high-temperature, moving from a refreshing 13.4°C (56.1°F) in October to an icy 5.5°C (41.9°F). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Iwamizawa, Japan, with an average temperature ranging between max -1.3°C (29.7°F) and min -6.5°C (20.3°F). The shift from November to December corresponds with a decrease in the average high-temperature, down to a subzero cold -1.3°C (29.7°F) from a wintry 5.5°C (41.9°F). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Iwamizawa?
January is the coldest month in Iwamizawa, Japan, with the temperature often reaching an average high of -3.7°C (25.3°F) and an average low of -10.2°C (13.6°F).
What is the most humid month in Iwamizawa?
With an average relative humidity of 91%, January is the most humid month in Iwamizawa.
How much does it rain in Iwamizawa?
In Iwamizawa, during the entire year, the rain falls for 162.3 days and collects up to 769mm (30.28") of precipitation.
When does it snow in Iwamizawa?
January through May, October through December are months with snowfall in Iwamizawa.
How many days does it snow in Iwamizawa?
Throughout the year, there are 109.6 snowfall days, and 1497mm (58.94") of snow is accumulated.
What is the month with the least sunshine in Iwamizawa?
January has the least sunshine of the year in Iwamizawa, with an average of 2.4h of sunshine.
What is the month with the lowest UV index in Iwamizawa?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.
What is the driest month in Iwamizawa?
The months with the least rainfall are February and April Rain falls for 5.1 days and accumulates 44mm (1.73") of rain.
What is the least humid month in Iwamizawa?
With an average relative humidity of 77%, May is the least humid month in Iwamizawa.
What month has the most sunshine in Iwamizawa?
With an average of 8.8h of sunshine, May has the most sunshine of the year in Iwamizawa, Japan.
When it does not snow in Iwamizawa?
June through September are months without snowfall in Iwamizawa.
When are the longest days in Iwamizawa?
June has the longest days of the year in Iwamizawa, Japan, with an average of 15h and 18min of daylight.
When is the highest UV index in Iwamizawa?
The month with the highest UV index is July, with an average maximum UV index of 6.
What time of the year is the hottest in Iwamizawa?
The warmest period tends to be August, when average temperatures fluctuate between a high of 24.2°C (75.6°F) and a low of 15.8°C (60.4°F).
What is the rainiest month in Iwamizawa?
The month with the most rainfall in Iwamizawa is August, when the rain falls for 18.7 days and typically aggregates up to 118mm (4.65") of precipitation.
What is the snowiest month in Iwamizawa?
The month with the most snowfall is December, when snow falls for 25.1 days and typically aggregates up to 394mm (15.51") of snow.
What is the month with the shortest days in Iwamizawa?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
Is there Daylight Saving Time (DST) in Iwamizawa?
Iwamizawa, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average temperature
Iwamizawa, Japan
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is January (-3.7°C).
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (-10.6°C).
Average pressure
Iwamizawa, Japan
- Average pressure in January:
1013mbar - Average pressure in February:
1014.8mbar - Average pressure in March:
1013.2mbar - Average pressure in April:
1012.2mbar - Average pressure in May:
1010.3mbar - Average pressure in June:
1008.9mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009.8mbar - Average pressure in September:
1013.5mbar - Average pressure in October:
1015.8mbar - Average pressure in November:
1016mbar - Average pressure in December:
1012.8mbar
The month with the highest atmospheric pressure is November (1016mbar).
The month with the lowest atmospheric pressure is July (1008.7mbar).
Average wind speed
Iwamizawa, Japan
- Average wind speed in January:
11km/h - Average wind speed in February:
11.3km/h - Average wind speed in March:
11.3km/h - Average wind speed in April:
12.1km/h - Average wind speed in May:
11.3km/h - Average wind speed in June:
9.4km/h
- Average wind speed in July:
8.7km/h - Average wind speed in August:
8.2km/h - Average wind speed in September:
9km/h - Average wind speed in October:
11.1km/h - Average wind speed in November:
11km/h - Average wind speed in December:
11.8km/h
The windiest month (with the highest average wind speed) is April (12.1km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity
Iwamizawa, Japan
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall
Iwamizawa, Japan
The wettest month (with the highest rainfall) is August (118mm).
The driest months (with the least rainfall) are February and April (44mm).
Average rainfall days
Iwamizawa, Japan
- Average rainfall days in January:
6.1 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
15 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
19.8 days - Average rainfall days in August:
18.7 days - Average rainfall days in September:
16.6 days - Average rainfall days in October:
17 days - Average rainfall days in November:
14.4 days - Average rainfall days in December:
8.7 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Iwamizawa, Japan
The month with the highest snowfall is December (394mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Iwamizawa, Japan
- Average snowfall days in January:
25.8 days - Average snowfall days in February:
21.9 days - Average snowfall days in March:
18.8 days - Average snowfall days in April:
5.2 days - Average snowfall days in May:
0.2 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:
0.9 days - Average snowfall days in November:
11.7 days - Average snowfall days in December:
25.1 days
The month with the highest number of snowfall days is January (25.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Iwamizawa, Japan
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
2h and 2min - Average sunshine in February:
2h and 4min - Average sunshine in March:
4h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
8h and 0min
- Average sunshine in July:
8h and 1min - Average sunshine in August:
8h and 4min - Average sunshine in September:
7h and 5min - Average sunshine in October:
6h and 4min - Average sunshine in November:
3h and 5min - Average sunshine in December:
2h and 4min
The month with the most sunshine is May (Average sunshine: 8h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days
Iwamizawa, Japan
- Average sunshine days in January:
4.3 days - Average sunshine days in February:
5.7 days - Average sunshine days in March:
7.5 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
9 days - Average sunshine days in September:
10.7 days - Average sunshine days in October:
11.8 days - Average sunshine days in November:
6.8 days - Average sunshine days in December:
3 days
The month with the most sunshine days is May (13.8 days).
The month with the least sunshine days is December (3 days).
Average UV index
Iwamizawa, Japan
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Iwamizawa, Japan
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility
Iwamizawa, Japan
The months with the highest visibility are April, May and October (9km).
The month with the lowest visibility is January (6km).
Iwamizawa, Japan
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
