Annual mean 12°C · wettest around August · prevailing wind NW
Warmest
27.5 °C
Coldest
2.0 °C
Wettest
31%
Windiest
5.1 m/s
Prevailing
NW
3.9 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 Iwaizumi 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. Iwaizumi has no sharply defined rainy season: the chance of rain on a given day runs from 10% in January, the driest month, to 24% in August, the wettest. Winds in Iwaizumi are highest in April, averaging 3.4 m/s (12 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the NW. The clearest skies in Iwaizumi come in May, when the sky is typically 66% covered; July is the cloudiest month, at 76%.
Month by month Iwaizumi 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
3°C
-2°C
-3°C
10%
72%
3.2 m/s
0
0
3
February
3°C
-2°C
-2°C
11%
71%
3.3 m/s
0
0
6
March
8°C
2°C
3°C
13%
67%
3.3 m/s
3
0
24
April
13°C
7°C
9°C
15%
66%
3.4 m/s
17
0
58
May
19°C
13°C
16°C
15%
66%
3.1 m/s
58
5
77
June
21°C
16°C
20°C
15%
74%
2.8 m/s
73
21
61
July
25°C
21°C
27°C
19%
76%
2.5 m/s
50
47
24
August
27°C
22°C
29°C
24%
72%
2.7 m/s
36
52
14
September
24°C
18°C
24°C
17%
72%
2.6 m/s
69
35
42
October
17°C
11°C
15°C
16%
68%
2.8 m/s
54
3
79
November
11°C
5°C
8°C
11%
67%
2.9 m/s
13
0
56
December
5°C
0°C
-0°C
11%
72%
3.1 m/s
0
0
12
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 Iwaizumi weather by season
Year round, Iwaizumi has days of about 3°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.
Iwaizumi weather in winterDecember to February
High 4°CLow -1°CRain 11%
Winter in Iwaizumi has typical daily highs of about 4°C and lows of about -1°C, with a 11% chance of rain on a given day.
Iwaizumi weather in springMarch to May
High 13°CLow 7°CRain 14%
Spring in Iwaizumi has typical daily highs of about 13°C and lows of about 7°C, with a 14% chance of rain on a given day.
Iwaizumi weather in summerJune to August
High 24°CLow 20°CRain 19%
Summer in Iwaizumi has typical daily highs of about 24°C and lows of about 20°C, with a 19% chance of rain on a given day.
Iwaizumi weather in autumnSeptember to November
High 17°CLow 11°CRain 15%
Autumn in Iwaizumi has typical daily highs of about 17°C and lows of about 11°C, with a 15% chance of rain on a given day.
When is the rainy season in Iwaizumi?
Iwaizumi has no sharply defined rainy season: the chance of rain on a given day runs from 10% in January, the driest month, to 24% in August, the wettest.
What time of year is Iwaizumi windiest?
Winds in Iwaizumi are highest in April, averaging 3.4 m/s (12 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the NW.
What is the average temperature in Iwaizumi year round?
The average temperature in Iwaizumi 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.