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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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Iwashita, Japan, is a frosty winter month, with an average temperature ranging between max 9.2°C (48.6°F) and min 3.8°C (38.8°F). Iwashita reaches its lowest average temperatures in January, measuring 9.2°C (48.6°F) at the peak and 3.8°C (38.8°F) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Iwashita, is a cool month, with an average temperature varying between 4.8°C (40.6°F) and 10.8°C (51.4°F). The average high-temperature in February, at a cool 10.8°C (51.4°F), reveals a modest deviation from January's 9.2°C (48.6°F). Weather in February »
Weather in March
March, the first month of the spring in Iwashita, is a mild month, with an average temperature fluctuating between 13.7°C (56.7°F) and 7.3°C (45.1°F). In Iwashita, March's average high-temperature stands at a moderate 13.7°C (56.7°F), closely related to the preceding month. Weather in March »
Weather in April
April in Iwashita, Japan, is a refreshing spring month, with an average temperature fluctuating between 18.2°C (64.8°F) and 11.3°C (52.3°F). April signifies a subtle uplift in the average high-temperature, adjusting from a mild 13.7°C (56.7°F) in March to an enjoyable 18.2°C (64.8°F). Weather in April »
Weather in May
May, the last month of the spring in Iwashita, is a pleasant month, with temperature in the range of an average high of 22.7°C (72.9°F) and an average low of 15.7°C (60.3°F). Iwashita in May denotes a subtle temperature transition, adjusting from an average high of an enjoyable 18.2°C (64.8°F) in April to a pleasant 22.7°C (72.9°F). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Iwashita, Japan, with an average temperature varying between 24.9°C (76.8°F) and 19.5°C (67.1°F). The beginning of June reveals an average high-temperature of a warm 24.9°C (76.8°F), showing minimal deviation from the previous month. Weather in June »
Weather in July
July, like June, in Iwashita, Japan, is another warm summer month, with an average temperature ranging between min 23.2°C (73.8°F) and max 28.2°C (82.8°F). In Iwashita, the average high-temperature in July slightly increases from a warm 24.9°C (76.8°F) in June to a still moderately hot 28.2°C (82.8°F). Weather in July »
Weather in August
August, the last month of the summer in Iwashita, is a tropical month, with an average temperature ranging between max 30.3°C (86.5°F) and min 24.4°C (75.9°F). With an average high-temperature of 30.3°C (86.5°F) and an average low-temperature of 24.4°C (75.9°F), August is the warmest month. August's average heat index is appraised at a sweltering 38°C (100.4°F). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Iwashita, Japan, with an average temperature varying between 27.2°C (81°F) and 21°C (69.8°F). A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a tropical 30.3°C (86.5°F) to a moderately hot 27.2°C (81°F). Weather in September »
Weather in October
October, like September, is another pleasant autumn month in Iwashita, Japan, with temperature in the range of an average low of 16.6°C (61.9°F) and an average high of 22.8°C (73°F). A mild drop in Iwashita's average high-temperature is observed in October, transitioning from a moderately hot 27.2°C (81°F) in September to an agreeable 22.8°C (73°F). Weather in October »
Weather in November
November, the last month of the autumn in Iwashita, is another refreshing month, with an average temperature varying between 17.1°C (62.8°F) and 11.5°C (52.7°F). Iwashita's weather changes with the onset of November, slightly falling from an agreeable 22.8°C (73°F) in October to a comfortable 17.1°C (62.8°F). Weather in November »
Weather in December
December, the first month of the winter in Iwashita, is also a fresh month, with an average temperature ranging between min 6°C (42.8°F) and max 11.3°C (52.3°F). December weather is marked by a drop in the average high-temperature, falling from a comfortable 17.1°C (62.8°F) in November to a cool 11.3°C (52.3°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 are the coldest months in Iwashita?
January is Iwashita's coldest month, registering average high temperatures of 9.2°C (48.6°F) and lows of 3.8°C (38.8°F).
What are the least humid months in Iwashita?
The months with the lowest humidity are January through March, with an average relative humidity of 71%.
What is the driest month in Iwashita?
The month with the least rainfall in Iwashita is January, when the rain falls for 11.3 days and typically collects 48mm (1.89") of precipitation.
How many days does it rain in Iwashita?
Throughout the year, in Iwashita, there are 186.2 rainfall days, and 1341mm (52.8") of precipitation is accumulated.
When does it snow in Iwashita?
Months with snowfall in Iwashita, Japan, are January through March and December.
What is the snowiest month in Iwashita?
The months with the most snowfall in Iwashita, Japan, are January and December, with an average 24mm (0.94") of accumulated snow.
How many days does it snow in Iwashita?
Throughout the year, in Iwashita, there are 9.2 snowfall days, and 58mm (2.28") of snow is accumulated.
What is the month with the least sunshine in Iwashita?
With an average of 5.2h of sunshine, January has the least sunshine of the year.
When is the lowest UV index in Iwashita?
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
When it does not snow in Iwashita?
In Iwashita, Japan, snow does not fall in April through November.
What is the wettest month in Iwashita?
The month with the most rainfall in Iwashita is June, when the rain falls for 20.8 days and typically aggregates up to 266mm (10.47") of precipitation.
When are the longest days in Iwashita?
The month with the longest days is June, with an average of 14h and 18min of daylight.
What is the most humid month in Iwashita?
The most humid month in Iwashita is July, with an average relative humidity of 84%.
What is the month with the highest UV index in Iwashita?
The months with the highest UV index in Iwashita are July and August, with an average maximum UV index of 7.
What is the warmest month in Iwashita?
With average high temperatures of 30.3°C (86.5°F) and lows of 24.4°C (75.9°F), August is the warmest month.
What month has the most sunshine in Iwashita?
With an average of 10.8h of sunshine, August has the most sunshine of the year.
What is the month with the shortest days in Iwashita?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
Is there Daylight Saving Time (DST) in Iwashita?
Iwashita does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Iwashita, Japan
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (9.2°C).
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure
Iwashita, Japan
- Average pressure in January:
1021.8mbar - Average pressure in February:
1020.7mbar - Average pressure in March:
1018.4mbar - Average pressure in April:
1015.3mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1008.2mbar
- Average pressure in July:
1008.8mbar - Average pressure in August:
1008.6mbar - Average pressure in September:
1011.6mbar - Average pressure in October:
1016.3mbar - Average pressure in November:
1020.1mbar - Average pressure in December:
1021.2mbar
The month with the highest atmospheric pressure is January (1021.8mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed
Iwashita, Japan
- Average wind speed in January:
10.6km/h - Average wind speed in February:
10.9km/h - Average wind speed in March:
10.9km/h - Average wind speed in April:
10.1km/h - Average wind speed in May:
8.4km/h - Average wind speed in June:
8.2km/h
- Average wind speed in July:
9.2km/h - Average wind speed in August:
8.6km/h - Average wind speed in September:
9.2km/h - Average wind speed in October:
10.5km/h - Average wind speed in November:
9.7km/h - Average wind speed in December:
11km/h
The windiest month (with the highest average wind speed) is December (11km/h).
The calmest month (with the lowest average wind speed) is June (8.2km/h).
Average humidity
Iwashita, Japan
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (71%).
Average rainfall
Iwashita, Japan
- Average rainfall in January:
48mm - Average rainfall in February:
77mm - Average rainfall in March:
86mm - Average rainfall in April:
86mm - Average rainfall in May:
100mm - Average rainfall in June:
266mm
The wettest month (with the highest rainfall) is June (266mm).
The driest month (with the least rainfall) is January (48mm).
Average rainfall days
Iwashita, Japan
- Average rainfall days in January:
11.3 days - Average rainfall days in February:
12.5 days - Average rainfall days in March:
15.3 days - Average rainfall days in April:
14 days - Average rainfall days in May:
12.5 days - Average rainfall days in June:
20.8 days
- Average rainfall days in July:
23 days - Average rainfall days in August:
21.9 days - Average rainfall days in September:
18.2 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
11.8 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is July (23 days).
The month with the least rainy days is January (11.3 days).
Average snowfall
Iwashita, Japan
The months with the highest snowfall are January and December (24mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Iwashita, Japan
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
1.8 days - Average snowfall days in March:
0.3 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 (4.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Iwashita, Japan
- Average daylight in January:
10h and 2min - 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 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 1min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 4min - Average sunshine in June:
8h and 1min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
10h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 4min - 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 48min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days
Iwashita, Japan
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
16.6 days - Average sunshine days in June:
7.7 days
- Average sunshine days in July:
4.8 days - Average sunshine days in August:
6 days - Average sunshine days in September:
9.1 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
15.2 days - Average sunshine days in December:
14.4 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is July (4.8 days).
Average UV index
Iwashita, Japan
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Iwashita, Japan
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility
Iwashita, Japan
The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (9km).
