Annual mean 7°C · wettest around January · prevailing wind SW
Warmest
21.3 °C
Coldest
-5.0 °C
Wettest
32%
Windiest
5.8 m/s
Prevailing
SW
5.2 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 Sipoo over the whole year is 7°C. July is the hottest month, with highs of about 20°C; January is the coldest, with lows of about -4°C. The rainy (wet) season in Sipoo runs from November to February, peaking in January with a 31% chance of rain on a given day. The dry season is March to October; May is the driest month, at 12%. Winds in Sipoo are highest in January, averaging 5.3 m/s (19 km/h), and lightest in July, at 4.1 m/s (15 km/h). The prevailing wind is from the SW. The clearest skies in Sipoo come in June, when the sky is typically 45% covered; December is the cloudiest month, at 83%.
Month by month Sipoo 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
-4°C
-9°C
31%
81%
5.3 m/s
0
0
0
February
-2°C
-4°C
-8°C
28%
76%
5.0 m/s
0
0
0
March
1°C
-2°C
-5°C
21%
65%
4.7 m/s
0
0
1
April
6°C
1°C
1°C
16%
55%
4.6 m/s
1
0
15
May
13°C
8°C
8°C
12%
47%
4.3 m/s
18
1
52
June
18°C
14°C
14°C
14%
45%
4.4 m/s
43
6
72
July
20°C
16°C
18°C
14%
47%
4.1 m/s
66
13
71
August
19°C
14°C
16°C
15%
53%
4.3 m/s
65
4
80
September
14°C
10°C
11°C
17%
58%
4.4 m/s
26
0
72
October
8°C
6°C
3°C
20%
71%
5.2 m/s
0
0
26
November
3°C
2°C
-2°C
28%
81%
5.3 m/s
0
0
5
December
-1°C
-1°C
-7°C
24%
83%
5.2 m/s
0
0
0
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 Sipoo weather by season
Year round, Sipoo has days of about -3°C at their warmest in January, its coolest month, and 20°C in July, its warmest; the coolest hours of the day run from -4°C to 16°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around January and least likely around May. 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.
Sipoo weather in winterDecember to February
High -2°CLow -3°CRain 28%
Winter in Sipoo has typical daily highs of about -2°C and lows of about -3°C, with a 28% chance of rain on a given day.
Sipoo weather in springMarch to May
High 7°CLow 2°CRain 16%
Spring in Sipoo has typical daily highs of about 7°C and lows of about 2°C, with a 16% chance of rain on a given day.
Sipoo weather in summerJune to August
High 19°CLow 15°CRain 14%
Summer in Sipoo has typical daily highs of about 19°C and lows of about 15°C, with a 14% chance of rain on a given day.
Sipoo weather in autumnSeptember to November
High 8°CLow 6°CRain 22%
Autumn in Sipoo has typical daily highs of about 8°C and lows of about 6°C, with a 22% chance of rain on a given day.
When is the rainy season in Sipoo?
The rainy (wet) season in Sipoo runs from November to February, peaking in January with a 31% chance of rain on a given day. The dry season is March to October; May is the driest month, at 12%.
What time of year is Sipoo windiest?
Winds in Sipoo are highest in January, averaging 5.3 m/s (19 km/h), and lightest in July, at 4.1 m/s (15 km/h). The prevailing wind is from the SW.
What is the average temperature in Sipoo year round?
The average temperature in Sipoo over the whole year is 7°C. July is the hottest month, with highs of about 20°C; January is the coldest, with lows of about -4°C.