Annual mean 7°C · wettest around October · prevailing wind SE
Warmest
16.6 °C
Coldest
1.6 °C
Wettest
42%
Windiest
2.4 m/s
Prevailing
SE
2.0 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 Sitka over the whole year is 7°C. August is the hottest month, with highs of about 16°C; February is the coldest, with lows of about 0°C. Sitka has no sharply defined rainy season: the chance of rain on a given day runs from 22% in June, the driest month, to 37% in October, the wettest. Winds in Sitka are highest in December, averaging 2.3 m/s (8 km/h), and lightest in July, at 1.3 m/s (5 km/h). The prevailing wind is from the SE. The clearest skies in Sitka come in March, when the sky is typically 70% covered; July is the cloudiest month, at 80%.
Month by month Sitka 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
-2°C
31%
78%
2.2 m/s
0
0
2
February
3°C
0°C
-2°C
29%
71%
2.0 m/s
0
0
2
March
5°C
1°C
0°C
23%
70%
2.0 m/s
0
0
9
April
8°C
4°C
3°C
25%
72%
1.9 m/s
0
0
23
May
11°C
7°C
7°C
26%
75%
1.6 m/s
4
0
53
June
14°C
10°C
11°C
22%
79%
1.5 m/s
16
0
80
July
16°C
13°C
14°C
24%
80%
1.3 m/s
44
0
88
August
16°C
13°C
14°C
29%
79%
1.3 m/s
49
0
87
September
14°C
10°C
11°C
35%
77%
1.4 m/s
14
0
79
October
9°C
7°C
6°C
37%
77%
1.8 m/s
1
0
40
November
5°C
3°C
1°C
35%
76%
2.0 m/s
0
0
9
December
3°C
2°C
-2°C
34%
76%
2.3 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 Sitka weather by season
Year round, Sitka has days of about 3°C at their warmest in January, its coolest month, and 16°C in August, its warmest; the coolest hours of the day run from 0°C to 13°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around October and least likely around June. 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.
Sitka weather in winterDecember to February
High 3°CLow 1°CRain 31%
Winter in Sitka has typical daily highs of about 3°C and lows of about 1°C, with a 31% chance of rain on a given day.
Sitka weather in springMarch to May
High 8°CLow 4°CRain 25%
Spring in Sitka has typical daily highs of about 8°C and lows of about 4°C, with a 25% chance of rain on a given day.
Sitka weather in summerJune to August
High 15°CLow 12°CRain 25%
Summer in Sitka has typical daily highs of about 15°C and lows of about 12°C, with a 25% chance of rain on a given day.
Sitka weather in autumnSeptember to November
High 9°CLow 7°CRain 36%
Autumn in Sitka has typical daily highs of about 9°C and lows of about 7°C, with a 36% chance of rain on a given day.
When is the rainy season in Sitka?
Sitka has no sharply defined rainy season: the chance of rain on a given day runs from 22% in June, the driest month, to 37% in October, the wettest.
What time of year is Sitka windiest?
Winds in Sitka are highest in December, averaging 2.3 m/s (8 km/h), and lightest in July, at 1.3 m/s (5 km/h). The prevailing wind is from the SE.
What is the average temperature in Sitka year round?
The average temperature in Sitka over the whole year is 7°C. August is the hottest month, with highs of about 16°C; February is the coldest, with lows of about 0°C.