Annual mean 14°C · wettest around September · prevailing wind E
Warmest
28.5 °C
Coldest
6.3 °C
Wettest
28%
Windiest
5.2 m/s
Prevailing
E
4.3 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 Iwaki over the whole year is 14°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 1°C. Iwaki has no sharply defined rainy season: the chance of rain on a given day runs from 7% in January, the driest month, to 21% in September, the wettest. Winds in Iwaki are highest in February, averaging 3.7 m/s (13 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the E. The clearest skies in Iwaki come in January, when the sky is typically 58% covered; September is the cloudiest month, at 79%.
Month by month Iwaki 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
1°C
1°C
7%
58%
3.4 m/s
0
0
17
February
8°C
1°C
2°C
8%
60%
3.7 m/s
1
0
19
March
11°C
5°C
6°C
15%
63%
3.5 m/s
5
0
44
April
15°C
9°C
11°C
16%
66%
3.6 m/s
25
0
72
May
20°C
15°C
17°C
18%
68%
3.2 m/s
71
4
79
June
23°C
19°C
22°C
19%
74%
2.8 m/s
77
28
51
July
26°C
23°C
28°C
19%
75%
2.5 m/s
42
62
13
August
28°C
24°C
30°C
18%
74%
2.7 m/s
20
63
5
September
25°C
20°C
26°C
21%
79%
2.6 m/s
58
49
29
October
20°C
14°C
18°C
17%
71%
2.9 m/s
69
9
74
November
15°C
8°C
11°C
10%
60%
3.0 m/s
31
0
74
December
9°C
3°C
4°C
8%
58%
3.3 m/s
3
0
36
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 Iwaki weather by season
Year round, Iwaki has days of about 7°C at their warmest in January, its coolest month, and 28°C in August, its warmest; the coolest hours of the day run from 1°C to 24°C through the year, and the average temperature over the year is 14°C around the clock. Rain is most likely around September 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.
Iwaki weather in winterDecember to February
High 8°CLow 2°CRain 8%
Winter in Iwaki has typical daily highs of about 8°C and lows of about 2°C, with a 8% chance of rain on a given day.
Iwaki weather in springMarch to May
High 15°CLow 10°CRain 16%
Spring in Iwaki has typical daily highs of about 15°C and lows of about 10°C, with a 16% chance of rain on a given day.
Iwaki weather in summerJune to August
High 25°CLow 22°CRain 19%
Summer in Iwaki has typical daily highs of about 25°C and lows of about 22°C, with a 19% chance of rain on a given day.
Iwaki weather in autumnSeptember to November
High 20°CLow 14°CRain 16%
Autumn in Iwaki has typical daily highs of about 20°C and lows of about 14°C, with a 16% chance of rain on a given day.
When is the rainy season in Iwaki?
Iwaki has no sharply defined rainy season: the chance of rain on a given day runs from 7% in January, the driest month, to 21% in September, the wettest.
What time of year is Iwaki windiest?
Winds in Iwaki are highest in February, averaging 3.7 m/s (13 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the E.
What is the average temperature in Iwaki year round?
The average temperature in Iwaki over the whole year is 14°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 1°C.