Annual mean 15°C · wettest around June · prevailing wind NE
Warmest
30.8 °C
Coldest
6.5 °C
Wettest
34%
Windiest
3.7 m/s
Prevailing
NE
3.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Ōizumi over the whole year is 15°C. August is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C. The rainy (wet) season in Ōizumi runs from March to October, peaking in June with a 26% chance of rain on a given day. The dry season is November to February; December is the driest month, at 7%. Winds in Ōizumi are highest in February, averaging 3.0 m/s (11 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the NE. The clearest skies in Ōizumi come in January, when the sky is typically 40% covered; September is the cloudiest month, at 74%.
Month by month Ōizumi climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
7°C
-0°C
2°C
8%
40%
2.8 m/s
0
0
21
February
8°C
1°C
3°C
9%
48%
3.0 m/s
1
0
26
March
12°C
5°C
8°C
18%
54%
2.9 m/s
13
0
54
April
17°C
10°C
14°C
20%
61%
2.9 m/s
45
3
73
May
21°C
15°C
20°C
21%
65%
2.6 m/s
73
16
63
June
24°C
19°C
25°C
26%
71%
2.4 m/s
60
41
32
July
28°C
23°C
31°C
26%
72%
2.3 m/s
24
40
9
August
30°C
24°C
33°C
24%
71%
2.4 m/s
17
34
6
September
25°C
20°C
27°C
25%
74%
2.2 m/s
47
44
24
October
20°C
14°C
18°C
21%
66%
2.2 m/s
65
14
66
November
15°C
8°C
12°C
10%
52%
2.3 m/s
35
0
76
December
9°C
2°C
5°C
7%
42%
2.6 m/s
2
0
42
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Ōizumi weather by season
Year round, Ōizumi has days of about 7°C at their warmest in January, its coolest month, and 30°C in August, its warmest; the coolest hours of the day run from -0°C to 24°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around June and least likely around December. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Ōizumi weather in winterDecember to February
High 8°CLow 1°CRain 8%
Winter in Ōizumi has typical daily highs of about 8°C and lows of about 1°C, with a 8% chance of rain on a given day.
Ōizumi weather in springMarch to May
High 17°CLow 10°CRain 19%
Spring in Ōizumi has typical daily highs of about 17°C and lows of about 10°C, with a 19% chance of rain on a given day.
Ōizumi weather in summerJune to August
High 27°CLow 22°CRain 25%
Summer in Ōizumi has typical daily highs of about 27°C and lows of about 22°C, with a 25% chance of rain on a given day.
Ōizumi weather in autumnSeptember to November
High 20°CLow 14°CRain 19%
Autumn in Ōizumi has typical daily highs of about 20°C and lows of about 14°C, with a 19% chance of rain on a given day.
When is the rainy season in Ōizumi?
The rainy (wet) season in Ōizumi runs from March to October, peaking in June with a 26% chance of rain on a given day. The dry season is November to February; December is the driest month, at 7%.
What time of year is Ōizumi windiest?
Winds in Ōizumi are highest in February, averaging 3.0 m/s (11 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the NE.
What is the average temperature in Ōizumi year round?
The average temperature in Ōizumi over the whole year is 15°C. August is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C.