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St. Moritz vs Reykjavík
Comparing St. Moritz change · Reykjavík change
Reykjavík is the warmer of the two — about 3°C on the annual average; Reykjavík is the wetter, with 621 mm more rain a year, and St. Moritz the sunnier.
How the seasons compare
The differences between St. Moritz and Reykjavík, in everyday terms.
Summers
St. Moritz has much hotter summers
St. Moritz: Mild
Reykjavík: Cool
Winters
Reykjavík has far milder winters
St. Moritz: Bitterly cold
Reykjavík: Cold
Rain & snow
Reykjavík is wetter
St. Moritz: Moderate rainfall
Reykjavík: Wet
Sky
St. Moritz is sunnier
St. Moritz: Often cloudy
Reykjavík: Often grey
Month-by-month charts
Temperature
Reykjavík is the warmer of the two — about 3°C on the annual average.
Precipitation
Reykjavík is the wetter — about 621 mm more across the year.
Clear skies
St. Moritz 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 (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St. Moritz | -1 | 0 | 4 | 8 | 13 | 17 | 19 | 19 | 15 | 11 | 4 | -1 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | +4 | +3 | — | -1 | -4 | -5 | -5 | -5 | -4 | -3 | — | +4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| St. Moritz | -1 | 0 | 4 | 8 | 13 | 17 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 |
| Difference | +4 | +3 | — | -1 | -4 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| St. Moritz | 19 | 19 | 15 | 11 | 4 | -1 |
| Reykjavík | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | -5 | -5 | -4 | -3 | — | +4 |
Avg low (°C) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St. Moritz | -16 | -16 | -10 | -4 | 0 | 3 | 5 | 5 | 1 | -3 | -8 | -13 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | +14 | +13 | +8 | +5 | +4 | +3 | +4 | +4 | +5 | +5 | +8 | +13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| St. Moritz | -16 | -16 | -10 | -4 | 0 | 3 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 |
| Difference | +14 | +13 | +8 | +5 | +4 | +3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| St. Moritz | 5 | 5 | 1 | -3 | -8 | -13 |
| Reykjavík | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | +4 | +4 | +5 | +5 | +8 | +13 |
Precipitation (mm) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St. Moritz | 29 | 19 | 24 | 37 | 67 | 91 | 87 | 100 | 73 | 77 | 70 | 37 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +104 | +108 | +85 | +39 | +26 | -41 | +8 | +34 | +54 | +38 | +80 | +87 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| St. Moritz | 29 | 19 | 24 | 37 | 67 | 91 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 |
| Difference | +104 | +108 | +85 | +39 | +26 | -41 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| St. Moritz | 87 | 100 | 73 | 77 | 70 | 37 |
| Reykjavík | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +8 | +34 | +54 | +38 | +80 | +87 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St. Moritz | — | — | — | — | — | — | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 | 0 | 0 | 0 | 1 | 21 | 30 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| St. Moritz | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| St. Moritz | — | — | — | — | — | — |
| Reykjavík | 0 | 0 | 0 | 1 | 21 | 30 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St. Moritz | 68 | 70 | 72 | 75 | 75 | 69 | 62 | 61 | 63 | 65 | 70 | 70 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +17 | +12 | +9 | +4 | +2 | +10 | +19 | +18 | +16 | +12 | +11 | +14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| St. Moritz | 68 | 70 | 72 | 75 | 75 | 69 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 |
| Difference | +17 | +12 | +9 | +4 | +2 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| St. Moritz | 62 | 61 | 63 | 65 | 70 | 70 |
| Reykjavík | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +19 | +18 | +16 | +12 | +11 | +14 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St. Moritz | 86 | 88 | 90 | 84 | 79 | 77 | 77 | 78 | 81 | 83 | 88 | 87 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | +1 | -1 | -4 | — | +4 | +6 | +8 | +8 | +6 | +4 | — | +1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| St. Moritz | 86 | 88 | 90 | 84 | 79 | 77 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 |
| Difference | +1 | -1 | -4 | — | +4 | +6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| St. Moritz | 77 | 78 | 81 | 83 | 88 | 87 |
| Reykjavík | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | +8 | +8 | +6 | +4 | — | +1 |
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. St. Moritz trends → · Reykjavík trends →
Methodology & sources
St. Moritz
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Samedan, about 4 km from the city centre.
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 St. Moritz · change Reykjavík → · St. Moritz page · Reykjavík page