Climate and monthly weather forecastOiso, Japan
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Oiso, Japan, with temperature in the range of an average high of 8.3°C (46.9°F) and an average low of 2.8°C (37°F). January, known for its average high temperature of 8.3°C (46.9°F) and an average low temperature of 2.8°C (37°F), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Oiso, Japan, with an average temperature fluctuating between 8.9°C (48°F) and 3.4°C (38.1°F). The ushering in of February brings an average high-temperature of a still chilly 8.9°C (48°F), closely mirroring the 8.3°C (46.9°F) of January. Weather in February »Weather in March
March, the first month of the spring in Oiso, is a fresh month, with an average temperature varying between 12.1°C (53.8°F) and 5.8°C (42.4°F). The shift into March is characterized by a subtle rise in the average high-temperature, transitioning from February's chilly 8.9°C (48°F) to a fresh 12.1°C (53.8°F). Weather in March »Weather in April
April is a refreshing spring month in Oiso, Japan, with an average temperature varying between 10.2°C (50.4°F) and 16.4°C (61.5°F). April showcases a minor temperature ascent, adjusting from March's fresh 12.1°C (53.8°F) to an enjoyable 16.4°C (61.5°F). Weather in April »Weather in May
May, the last month of the spring in Oiso, is an agreeable month, with an average temperature ranging between min 15.1°C (59.2°F) and max 21.3°C (70.3°F). The arrival of May witnesses a small shift in the average high-temperature, moving from a refreshing 16.4°C (61.5°F) in April to an agreeable 21.3°C (70.3°F). Weather in May »Weather in June
June, the first month of the summer in Oiso, is a warm month, with an average temperature ranging between min 18.4°C (65.1°F) and max 23.3°C (73.9°F). With the start of June, Oiso measures an average high-temperature of a moderately hot 23.3°C (73.9°F), not significantly differing from May's 21.3°C (70.3°F). Weather in June »Weather in July
July, like June, in Oiso, Japan, is another warm summer month, with an average temperature fluctuating between 22.5°C (72.5°F) and 27.6°C (81.7°F). The commencement of July sees a minor shift in the average high-temperature, moving from a warm 23.3°C (73.9°F) in June to a still moderately hot 27.6°C (81.7°F). Weather in July »Weather in August
August, the last month of the summer in Oiso, is also a moderately hot month, with an average temperature ranging between min 24°C (75.2°F) and max 29.2°C (84.6°F). With average high and low temperatures of 29.2°C (84.6°F) and 24°C (75.2°F) respectively, August is Oiso's warmest month. August's mean heat index is evaluated at a very hot 35°C (95°F). Weather in August »Weather in September
September, the first month of the autumn in Oiso, is still a warm month, with temperature in the range of an average high of 25.4°C (77.7°F) and an average low of 20.4°C (68.7°F). In Oiso, the average high-temperature in September slightly decreases from a warm 29.2°C (84.6°F) in August to a still moderately hot 25.4°C (77.7°F). Weather in September »Weather in October
October, the same as September, in Oiso, Japan, is another pleasant autumn month, with an average temperature ranging between min 15.6°C (60.1°F) and max 20.6°C (69.1°F). The beginning of October brings a slight decrease in the average high-temperature, transitioning from a warm 25.4°C (77.7°F) in September to a pleasant 20.6°C (69.1°F). Weather in October »Weather in November
The last month of the autumn, November, is another refreshing month in Oiso, Japan, with an average temperature ranging between min 10.6°C (51.1°F) and max 15.7°C (60.3°F). In Oiso, the average high-temperature in November gently drops from an agreeable 20.6°C (69.1°F) in October to a moderate 15.7°C (60.3°F). Weather in November »Weather in December
The first month of the winter, December, is still a cool month in Oiso, Japan, with an average temperature ranging between min 5.8°C (42.4°F) and max 10.8°C (51.4°F). December signifies a gentle decline in Oiso's average high-temperature, easing from a refreshing 15.7°C (60.3°F) in November to a cool 10.8°C (51.4°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
Oiso's January weather, with an average high temperature of 8.3°C (46.9°F) and an average low temperature of 2.8°C (37°F), tends to be the coldest of the year.
With an average relative humidity of 63%, January is the least humid month.
The months with the least rainfall in Oiso are January and February Rain falls for 8.5 days and accumulates 19mm (0.75") of rain.
In Oiso, Japan, during the entire year, the rain falls for 165.4 days and collects up to 524mm (20.63") of precipitation.
Months with snowfall are January through March.
Throughout the year, in Oiso, there are 2.9 snowfall days, and 12mm (0.47") of snow is accumulated.
January is the month with the lowest UV index, with an average maximum UV index of 2.
The month with the most snowfall in Oiso, Japan, is February, when snow falls for 1.4 days and typically aggregates up to 7mm (0.28") of snow.
The month with the least sunshine in Oiso is February, with an average of 5.8h of sunshine.
April through December are months without snowfall in Oiso, Japan.
June and July, with an average relative humidity of 81%, are most humid months.
June has the longest days of the year in Oiso, with an average of 14h and 30min of daylight.
July is the month with the most rainfall in Oiso, Japan. Rain falls for 19.8 days and accumulates 81mm (3.19") of precipitation.
With an average maximum UV index of 7, July is the month with the highest UV index in Oiso.
Oiso's warmest temperatures are experienced in August, with average high temperatures of 29.2°C (84.6°F) and lows of 24°C (75.2°F).
August has the most sunshine of the year, with an average of 10.4h of sunshine.
December has the shortest days of the year in Oiso, Japan, with an average of 9h and 48min of daylight.
Oiso does not observe Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Oiso, 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 (8.3°C).
The month with the highest average low temperature is August (24°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure
Oiso, Japan
- Average pressure in January:
1016.4mbar - Average pressure in February:
1017.2mbar - Average pressure in March:
1015.5mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1012mbar - Average pressure in June:
1009.1mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.2mbar - Average pressure in September:
1013.3mbar - Average pressure in October:
1016.4mbar - Average pressure in November:
1018.1mbar - Average pressure in December:
1016.5mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed
Oiso, Japan
- Average wind speed in January:
13.1km/h - Average wind speed in February:
13.8km/h - Average wind speed in March:
14.9km/h - Average wind speed in April:
14.9km/h - Average wind speed in May:
13.5km/h - Average wind speed in June:
12km/h
- Average wind speed in July:
12.9km/h - Average wind speed in August:
12.2km/h - Average wind speed in September:
12.6km/h - Average wind speed in October:
14km/h - Average wind speed in November:
12.5km/h - Average wind speed in December:
13.2km/h
The windiest months (with the highest average wind speed) are March and April (14.9km/h).
The calmest month (with the lowest average wind speed) is June (12km/h).
Average humidity
Oiso, Japan
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is January (63%).
Average rainfall
Oiso, Japan
The wettest month (with the highest rainfall) is July (81mm).
The driest months (with the least rainfall) are January and February (19mm).
Average rainfall days
Oiso, Japan
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
11.7 days - Average rainfall days in March:
15.6 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
13.6 days - Average rainfall days in June:
18.4 days
- Average rainfall days in July:
19.8 days - Average rainfall days in August:
16.6 days - Average rainfall days in September:
14.8 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is December (7.5 days).
Average snowfall
Oiso, Japan
The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Oiso, Japan
- Average snowfall days in January:
1.1 days - Average snowfall days in February:
1.4 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:
0.1 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Oiso, Japan
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 30min - Average sunshine in February:
5h and 48min - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 42min - Average sunshine in June:
8h and 54min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 6min - Average sunshine in December:
6h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days
Oiso, Japan
- Average sunshine days in January:
19.7 days - Average sunshine days in February:
13.7 days - Average sunshine days in March:
11.7 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
14.4 days - Average sunshine days in June:
8.3 days
- Average sunshine days in July:
6.5 days - Average sunshine days in August:
8.3 days - Average sunshine days in September:
11.4 days - Average sunshine days in October:
14.2 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is July (6.5 days).
Average UV index
Oiso, Japan
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover
Oiso, Japan
The month with the most cloud cover is June (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 27).
Average visibility
Oiso, Japan
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
