Annual mean 11°C · wettest around December · prevailing wind W
Warmest
26.6 °C
Coldest
0.2 °C
Wettest
39%
Windiest
6.1 m/s
Prevailing
W
5.0 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 Rokkasho over the whole year is 11°C. August is the hottest month, with highs of about 26°C; February is the coldest, with lows of about -2°C. Rokkasho has no sharply defined rainy season: the chance of rain on a given day runs from 14% in September, the driest month, to 29% in December, the wettest. Winds in Rokkasho are highest in February, averaging 4.4 m/s (16 km/h), and lightest in July, at 3.1 m/s (11 km/h). The prevailing wind is from the W. The clearest skies in Rokkasho come in May, when the sky is typically 58% covered; July is the cloudiest month, at 70%.
Month by month Rokkasho 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
1°C
-2°C
-5°C
25%
68%
4.3 m/s
0
0
0
February
2°C
-2°C
-5°C
22%
68%
4.4 m/s
0
0
1
March
7°C
1°C
1°C
18%
60%
4.2 m/s
0
0
14
April
12°C
7°C
7°C
17%
59%
4.3 m/s
8
0
48
May
18°C
12°C
14°C
15%
58%
3.9 m/s
45
1
77
June
21°C
16°C
19°C
15%
66%
3.3 m/s
72
13
69
July
25°C
21°C
25°C
15%
70%
3.1 m/s
59
46
32
August
26°C
22°C
27°C
20%
64%
3.2 m/s
47
53
21
September
23°C
17°C
22°C
14%
62%
3.1 m/s
74
29
50
October
17°C
11°C
14°C
19%
59%
3.4 m/s
45
2
76
November
10°C
5°C
5°C
22%
62%
3.9 m/s
7
0
42
December
3°C
-0°C
-3°C
29%
69%
4.2 m/s
0
0
5
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 Rokkasho weather by season
Year round, Rokkasho has days of about 1°C at their warmest in January, its coolest month, and 26°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 11°C around the clock. Rain is most likely around December and least likely around September. 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.
Rokkasho weather in winterDecember to February
High 2°CLow -1°CRain 25%
Winter in Rokkasho has typical daily highs of about 2°C and lows of about -1°C, with a 25% chance of rain on a given day.
Rokkasho weather in springMarch to May
High 12°CLow 7°CRain 17%
Spring in Rokkasho has typical daily highs of about 12°C and lows of about 7°C, with a 17% chance of rain on a given day.
Rokkasho weather in summerJune to August
High 24°CLow 19°CRain 17%
Summer in Rokkasho has typical daily highs of about 24°C and lows of about 19°C, with a 17% chance of rain on a given day.
Rokkasho weather in autumnSeptember to November
High 17°CLow 11°CRain 18%
Autumn in Rokkasho has typical daily highs of about 17°C and lows of about 11°C, with a 18% chance of rain on a given day.
When is the rainy season in Rokkasho?
Rokkasho has no sharply defined rainy season: the chance of rain on a given day runs from 14% in September, the driest month, to 29% in December, the wettest.
What time of year is Rokkasho windiest?
Winds in Rokkasho are highest in February, averaging 4.4 m/s (16 km/h), and lightest in July, at 3.1 m/s (11 km/h). The prevailing wind is from the W.
What is the average temperature in Rokkasho year round?
The average temperature in Rokkasho over the whole year is 11°C. August is the hottest month, with highs of about 26°C; February is the coldest, with lows of about -2°C.