Annual mean 12°C · wettest around August · prevailing wind SW
Warmest
28.2 °C
Coldest
0.9 °C
Wettest
30%
Windiest
5.6 m/s
Prevailing
SW
4.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Iwate over the whole year is 12°C. August is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -2°C. Iwate has no sharply defined rainy season: the chance of rain on a given day runs from 14% in January, the driest month, to 22% in August, the wettest. Winds in Iwate are highest in April, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.8 m/s (10 km/h). The prevailing wind is from the SW. The clearest skies in Iwate come in May, when the sky is typically 67% covered; July is the cloudiest month, at 76%.
Month by month Iwate 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
2°C
-2°C
-4°C
14%
73%
3.6 m/s
0
0
1
February
2°C
-2°C
-3°C
15%
73%
3.7 m/s
0
0
3
March
7°C
2°C
2°C
16%
68%
3.7 m/s
1
0
20
April
13°C
7°C
8°C
18%
68%
3.8 m/s
15
0
56
May
19°C
13°C
15°C
17%
67%
3.5 m/s
56
4
76
June
22°C
17°C
21°C
17%
75%
3.1 m/s
73
22
58
July
26°C
21°C
27°C
19%
76%
2.8 m/s
46
49
20
August
27°C
22°C
29°C
22%
73%
3.0 m/s
34
51
13
September
24°C
18°C
24°C
17%
73%
2.8 m/s
69
34
43
October
17°C
11°C
15°C
18%
69%
3.0 m/s
50
2
78
November
11°C
5°C
6°C
17%
69%
3.2 m/s
9
0
48
December
4°C
-0°C
-2°C
18%
74%
3.5 m/s
0
0
7
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 Iwate weather by season
Year round, Iwate has days of about 2°C at their warmest in January, its coolest month, and 27°C in August, its warmest; the coolest hours of the day run from -2°C to 22°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around August 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.
Iwate weather in winterDecember to February
High 2°CLow -2°CRain 16%
Winter in Iwate has typical daily highs of about 2°C and lows of about -2°C, with a 16% chance of rain on a given day.
Iwate weather in springMarch to May
High 13°CLow 7°CRain 17%
Spring in Iwate has typical daily highs of about 13°C and lows of about 7°C, with a 17% chance of rain on a given day.
Iwate weather in summerJune to August
High 25°CLow 20°CRain 20%
Summer in Iwate has typical daily highs of about 25°C and lows of about 20°C, with a 20% chance of rain on a given day.
Iwate weather in autumnSeptember to November
High 17°CLow 11°CRain 17%
Autumn in Iwate has typical daily highs of about 17°C and lows of about 11°C, with a 17% chance of rain on a given day.
When is the rainy season in Iwate?
Iwate has no sharply defined rainy season: the chance of rain on a given day runs from 14% in January, the driest month, to 22% in August, the wettest.
What time of year is Iwate windiest?
Winds in Iwate are highest in April, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.8 m/s (10 km/h). The prevailing wind is from the SW.
What is the average temperature in Iwate year round?
The average temperature in Iwate over the whole year is 12°C. August is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -2°C.