This reference page collects helsinki climate: monthly averages in one place: annual mean temperature 6.4 C; warmest month Jul (17.6 C); coldest month Feb (-3.9 C); wettest month Oct (2.58 mm/day). Figures are refreshed automatically by a scheduled build and cached locally so the page keeps its values even when the upstream API is temporarily unavailable. Use the table below for exact numbers, or the related pages for the same dataset for neighbouring periods and locations.
Annual mean temperature 6.4 C
Warmest month Jul (17.6 C)
Coldest month Feb (-3.9 C)
Wettest month Oct (2.58 mm/day)
All-time record high 27.9 C
All-time record low -26.7 C
Annual precipitation 712 mm / year
Coordinates 60.1699, 24.9384
Population 660,000
Average monthly temperature and rainfall in Helsinki
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-2.9
1.82
7.4
-23.1
Feb
-3.9
1.59
5.2
-26.7
Mar
-1.5
1.35
9.2
-15.6
Apr
3.1
1.35
14.9
-9.2
May
8.7
1.56
21.8
-0.8
Jun
13.5
2.20
24.1
4.5
Jul
17.6
1.90
27.9
9.4
Aug
17.3
2.28
26.4
9.0
Sep
13.3
2.09
21.6
4.1
Oct
7.4
2.58
15.7
-2.8
Nov
3.4
2.50
12.0
-9.4
Dec
-0.1
2.15
8.5
-21.9
What the Helsinki climate table shows
Values are multi-decadal climatological averages for the 60.1699, 24.9384 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Where does the data on helsinki climate: monthly averages come from?
From a public open API that is queried automatically and cached after every successful run.
How often is helsinki climate: monthly averages updated?
The build runs on a schedule, so values refresh at least daily and old pages stay live.