Annual mean 16°C · wettest around April · prevailing wind E
Warmest
30.2 °C
Coldest
7.5 °C
Wettest
35%
Windiest
4.4 m/s
Prevailing
E
3.7 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 Ōiso over the whole year is 16°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 2°C. Ōiso has no sharply defined rainy season: the chance of rain on a given day runs from 16% in January, the driest month, to 29% in April, the wettest. Winds in Ōiso are highest in February, averaging 3.4 m/s (12 km/h), and lightest in June, at 2.9 m/s (10 km/h). The prevailing wind is from the E. The clearest skies in Ōiso come in January, when the sky is typically 39% covered; June is the cloudiest month, at 65%.
Month by month Ōiso 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
8°C
2°C
3°C
16%
39%
3.0 m/s
0
0
31
February
9°C
3°C
4°C
18%
44%
3.4 m/s
2
0
33
March
12°C
7°C
8°C
28%
52%
3.4 m/s
15
0
57
April
17°C
11°C
13°C
29%
54%
3.4 m/s
47
1
74
May
21°C
16°C
19°C
27%
59%
3.2 m/s
77
13
63
June
24°C
20°C
24°C
29%
65%
2.9 m/s
64
43
29
July
28°C
24°C
30°C
25%
59%
2.9 m/s
19
48
7
August
29°C
25°C
32°C
26%
57%
3.1 m/s
9
39
4
September
26°C
22°C
27°C
28%
63%
3.0 m/s
41
48
18
October
20°C
16°C
19°C
28%
59%
3.1 m/s
65
18
59
November
16°C
10°C
13°C
22%
49%
2.9 m/s
43
0
76
December
11°C
5°C
6°C
17%
41%
2.9 m/s
5
0
52
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 Ōiso weather by season
Year round, Ōiso has days of about 8°C at their warmest in January, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from 2°C to 25°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around April and least likely around January. 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.
Ōiso weather in winterDecember to February
High 9°CLow 4°CRain 17%
Winter in Ōiso has typical daily highs of about 9°C and lows of about 4°C, with a 17% chance of rain on a given day.
Ōiso weather in springMarch to May
High 17°CLow 11°CRain 28%
Spring in Ōiso has typical daily highs of about 17°C and lows of about 11°C, with a 28% chance of rain on a given day.
Ōiso weather in summerJune to August
High 27°CLow 23°CRain 27%
Summer in Ōiso has typical daily highs of about 27°C and lows of about 23°C, with a 27% chance of rain on a given day.
Ōiso weather in autumnSeptember to November
High 20°CLow 16°CRain 26%
Autumn in Ōiso has typical daily highs of about 20°C and lows of about 16°C, with a 26% chance of rain on a given day.
When is the rainy season in Ōiso?
Ōiso has no sharply defined rainy season: the chance of rain on a given day runs from 16% in January, the driest month, to 29% in April, the wettest.
What time of year is Ōiso windiest?
Winds in Ōiso are highest in February, averaging 3.4 m/s (12 km/h), and lightest in June, at 2.9 m/s (10 km/h). The prevailing wind is from the E.
What is the average temperature in Ōiso year round?
The average temperature in Ōiso over the whole year is 16°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 2°C.