Annual mean 9°C · wettest around December · prevailing wind NW
Warmest
26.2 °C
Coldest
-2.7 °C
Wettest
47%
Windiest
5.0 m/s
Prevailing
NW
4.2 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 Otaru over the whole year is 9°C. August is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -5°C. The rainy (wet) season in Otaru runs from November to February, peaking in December with a 39% chance of rain on a given day. The dry season is March to October; July is the driest month, at 13%. Winds in Otaru are highest in April, averaging 3.6 m/s (13 km/h), and lightest in September, at 3.0 m/s (11 km/h). The prevailing wind is from the NW. The clearest skies in Otaru come in April, when the sky is typically 68% covered; February is the cloudiest month, at 75%.
Month by month Otaru 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
-5°C
-8°C
35%
74%
3.4 m/s
0
0
0
February
-1°C
-5°C
-7°C
33%
75%
3.5 m/s
0
0
0
March
4°C
-1°C
-2°C
20%
68%
3.5 m/s
0
0
7
April
10°C
5°C
5°C
16%
68%
3.6 m/s
6
0
39
May
17°C
11°C
13°C
14%
69%
3.6 m/s
39
1
75
June
20°C
15°C
18°C
16%
74%
3.3 m/s
67
11
72
July
24°C
20°C
25°C
13%
72%
3.1 m/s
64
45
34
August
25°C
20°C
26°C
19%
73%
3.1 m/s
59
49
27
September
22°C
16°C
21°C
15%
69%
3.0 m/s
79
19
63
October
15°C
9°C
11°C
24%
68%
3.2 m/s
30
1
69
November
7°C
3°C
2°C
32%
74%
3.5 m/s
1
0
25
December
-0°C
-3°C
-6°C
39%
75%
3.5 m/s
0
0
2
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 Otaru weather by season
Year round, Otaru has days of about -2°C at their warmest in January, its coolest month, and 25°C in August, its warmest; the coolest hours of the day run from -5°C to 20°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around December and least likely around July. 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.
Otaru weather in winterDecember to February
High -1°CLow -4°CRain 36%
Winter in Otaru has typical daily highs of about -1°C and lows of about -4°C, with a 36% chance of rain on a given day.
Otaru weather in springMarch to May
High 10°CLow 5°CRain 16%
Spring in Otaru has typical daily highs of about 10°C and lows of about 5°C, with a 16% chance of rain on a given day.
Otaru weather in summerJune to August
High 23°CLow 18°CRain 16%
Summer in Otaru has typical daily highs of about 23°C and lows of about 18°C, with a 16% chance of rain on a given day.
Otaru weather in autumnSeptember to November
High 15°CLow 9°CRain 24%
Autumn in Otaru has typical daily highs of about 15°C and lows of about 9°C, with a 24% chance of rain on a given day.
When is the rainy season in Otaru?
The rainy (wet) season in Otaru runs from November to February, peaking in December with a 39% chance of rain on a given day. The dry season is March to October; July is the driest month, at 13%.
What time of year is Otaru windiest?
Winds in Otaru are highest in April, averaging 3.6 m/s (13 km/h), and lightest in September, at 3.0 m/s (11 km/h). The prevailing wind is from the NW.
What is the average temperature in Otaru year round?
The average temperature in Otaru over the whole year is 9°C. August is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -5°C.