Finland weather by month

Check out Finland weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °F
25°F maximum daytime temperature in January in Helsinki25
27°F maximum daytime temperature in February in Helsinki27
34°F maximum daytime temperature in March in Helsinki34
45°F maximum daytime temperature in April in Helsinki45
59°F maximum daytime temperature in May in Helsinki59
66°F maximum daytime temperature in June in Helsinki66
70°F maximum daytime temperature in July in Helsinki70
68°F maximum daytime temperature in August in Helsinki68
57°F maximum daytime temperature in September in Helsinki57
48°F maximum daytime temperature in October in Helsinki48
37°F maximum daytime temperature in November in Helsinki37
30°F maximum daytime temperature in December in Helsinki30
Hours of sunshine (daily)
Days with some rainfall
20 days with some rainfall in January in Helsinki20
17 days with some rainfall in February in Helsinki17
16 days with some rainfall in March in Helsinki16
13 days with some rainfall in April in Helsinki13
10 days with some rainfall in May in Helsinki10
11 days with some rainfall in June in Helsinki11
14 days with some rainfall in July in Helsinki14
16 days with some rainfall in August in Helsinki16
17 days with some rainfall in September in Helsinki17
17 days with some rainfall in October in Helsinki17
21 days with some rainfall in November in Helsinki21
22 days with some rainfall in December in Helsinki22
Sea temperature °F
34°F sea temperature in January in Helsinki34
30°F sea temperature in February in Helsinki30
30°F sea temperature in March in Helsinki30
32°F sea temperature in April in Helsinki32
41°F sea temperature in May in Helsinki41
50°F sea temperature in June in Helsinki50
54°F sea temperature in July in Helsinki54
61°F sea temperature in August in Helsinki61
57°F sea temperature in September in Helsinki57
48°F sea temperature in October in Helsinki48
43°F sea temperature in November in Helsinki43
37°F sea temperature in December in Helsinki37

More about Finland

Finland by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Finland

Avalon Waterways: Top deals on 2026 river cruises

  • Book early & save on 2026 river cruises with Avalon Waterways
  • Filter deals by promotion, month, destination & more
  • Travel between 1st Jan & 31st Dec 2026 (inclusive)
Go to Avalon Waterways deal >>

Expires at 23:59 on Thursday 31st Dec 2026 · View all Avalon Waterways offers

The climate guide for Finland (Helsinki) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Finland destinations

Below are average maximum temperatures at popular countries, regions and places in Finland for next month - May. Select a destination to see the climate guide for all months of the year.

All Finland destinations

Metric (°C)  |  Imperial (°F)

Back to top

Compare Finland with the UK

Below the Finland chart shows average maximum daytime temperature for Finland (Helsinki) and the UK (London).

Maximum daytime temperature (°F)

Finland (Helsinki)
UK (London)
45
45
34
50
45
55
59
63
66
68
70
72
68
72
57
66
48
59
37
50
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
25
27
30

Metric (°C)  |  Imperial (°F)

Compare more Finland weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^