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Helsinki vs Reykjavík
Comparing Helsinki change · Reykjavík change
Helsinki is the warmer of the two — about 2°F on the annual average; Reykjavík is the wetter, with 26 in more rain a year, and Helsinki the sunnier.
How the seasons compare
The differences between Helsinki and Reykjavík, in everyday terms.
Summers
Helsinki has far hotter summers
Helsinki: Mild
Reykjavík: Cool
Winters
Reykjavík has much milder winters
Helsinki: Very cold
Reykjavík: Cold
Rain & snow
Reykjavík is wetter
Helsinki: Moderate rainfall
Reykjavík: Wet
Sky
Helsinki is sunnier
Helsinki: Often cloudy
Reykjavík: Often grey
Month-by-month charts
Temperature
Helsinki is the warmer of the two — about 2°F on the annual average.
Precipitation
Reykjavík is the wetter — about 26 in more across the year.
Clear skies
Helsinki has the clearer skies — the higher line.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Helsinki | 29 | 28 | 36 | 48 | 61 | 68 | 73 | 70 | 60 | 48 | 38 | 33 |
| Reykjavík | 38 | 37 | 38 | 44 | 49 | 54 | 57 | 56 | 52 | 45 | 40 | 38 |
| Difference | +9 | +9 | +3 | -5 | -12 | -14 | -16 | -14 | -8 | -2 | +2 | +6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Helsinki | 29 | 28 | 36 | 48 | 61 | 68 |
| Reykjavík | 38 | 37 | 38 | 44 | 49 | 54 |
| Difference | +9 | +9 | +3 | -5 | -12 | -14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Helsinki | 73 | 70 | 60 | 48 | 38 | 33 |
| Reykjavík | 57 | 56 | 52 | 45 | 40 | 38 |
| Difference | -16 | -14 | -8 | -2 | +2 | +6 |
Avg low (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Helsinki | 19 | 18 | 23 | 32 | 41 | 50 | 56 | 54 | 46 | 37 | 30 | 24 |
| Reykjavík | 29 | 28 | 29 | 34 | 39 | 44 | 47 | 47 | 43 | 37 | 32 | 31 |
| Difference | +10 | +10 | +6 | +2 | -2 | -6 | -8 | -6 | -2 | — | +2 | +7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Helsinki | 19 | 18 | 23 | 32 | 41 | 50 |
| Reykjavík | 29 | 28 | 29 | 34 | 39 | 44 |
| Difference | +10 | +10 | +6 | +2 | -2 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Helsinki | 56 | 54 | 46 | 37 | 30 | 24 |
| Reykjavík | 47 | 47 | 43 | 37 | 32 | 31 |
| Difference | -8 | -6 | -2 | — | +2 | +7 |
Precipitation (in) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Helsinki | 2.1 | 1.6 | 1.3 | 1.4 | 1.5 | 2.5 | 2.5 | 3.1 | 2.4 | 3.1 | 2.7 | 2.4 |
| Reykjavík | 5.2 | 5 | 4.3 | 3 | 3.7 | 2 | 3.8 | 5.3 | 5 | 4.5 | 5.9 | 4.9 |
| Difference | +3.1 | +3.4 | +3 | +1.6 | +2.1 | -0.5 | +1.2 | +2.2 | +2.6 | +1.4 | +3.1 | +2.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Helsinki | 2.1 | 1.6 | 1.3 | 1.4 | 1.5 | 2.5 |
| Reykjavík | 5.2 | 5 | 4.3 | 3 | 3.7 | 2 |
| Difference | +3.1 | +3.4 | +3 | +1.6 | +2.1 | -0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Helsinki | 2.5 | 3.1 | 2.4 | 3.1 | 2.7 | 2.4 |
| Reykjavík | 3.8 | 5.3 | 5 | 4.5 | 5.9 | 4.9 |
| Difference | +1.2 | +2.2 | +2.6 | +1.4 | +3.1 | +2.4 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Helsinki | — | — | — | — | — | — | — | — | — | — | — | — |
| Reykjavík | 10.8 | 15.8 | 11.4 | 4.6 | 0.4 | 0 | 0 | 0 | 0 | 0.4 | 8.2 | 11.9 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Helsinki | — | — | — | — | — | — |
| Reykjavík | 10.8 | 15.8 | 11.4 | 4.6 | 0.4 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Helsinki | — | — | — | — | — | — |
| Reykjavík | 0 | 0 | 0 | 0.4 | 8.2 | 11.9 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Helsinki | 75 | 70 | 65 | 66 | 62 | 65 | 63 | 63 | 67 | 75 | 77 | 77 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +10 | +12 | +17 | +13 | +15 | +14 | +18 | +17 | +12 | +2 | +4 | +7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Helsinki | 75 | 70 | 65 | 66 | 62 | 65 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 |
| Difference | +10 | +12 | +17 | +13 | +15 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Helsinki | 63 | 63 | 67 | 75 | 77 | 77 |
| Reykjavík | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +18 | +17 | +12 | +2 | +4 | +7 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Helsinki | 98 | 98 | 93 | 83 | 77 | 78 | 80 | 82 | 86 | 92 | 96 | 97 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | -10 | -11 | -7 | +1 | +6 | +5 | +5 | +4 | — | -4 | -8 | -10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Helsinki | 98 | 98 | 93 | 83 | 77 | 78 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 |
| Difference | -10 | -11 | -7 | +1 | +6 | +5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Helsinki | 80 | 82 | 86 | 92 | 96 | 97 |
| Reykjavík | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | +5 | +4 | — | -4 | -8 | -10 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Helsinki trends → · Reykjavík trends →
Reykjavík from Cfc to Cfb.
Methodology & sources
Helsinki
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Vantaa Helsinki-vantaan Lentoa, a weather station, about 18 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
Reykjavík
Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Keflavik, a weather station, about 39 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
← change Helsinki · change Reykjavík → · Helsinki page · Reykjavík page