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Arosa vs Reykjavík
Comparing Arosa change · Reykjavík change
Reykjavík is the warmer of the two — about 1°C on the annual average; Reykjavík is the wetter, with 153 mm more rain a year, and Arosa the sunnier.
How the seasons compare
The differences between Arosa and Reykjavík, in everyday terms.
Summers
Arosa has hotter summers
Arosa: Cool
Reykjavík: Cool
Winters
Reykjavík has much milder winters
Arosa: Very cold
Reykjavík: Cold
Rain & snow
Reykjavík is wetter
Arosa: Wet
Reykjavík: Wet
Sky
Arosa is sunnier
Arosa: Often cloudy
Reykjavík: Often grey
Month-by-month charts
Temperature
Reykjavík is the warmer of the two — about 1°C on the annual average.
Precipitation
Reykjavík is the wetter — about 153 mm more across the year.
Clear skies
Arosa 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | -0 | -0 | 2 | 5 | 10 | 14 | 16 | 16 | 12 | 9 | 3 | 0 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | +4 | +3 | +1 | +1 | — | -1 | -2 | -2 | -1 | -1 | +1 | +3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | -0 | -0 | 2 | 5 | 10 | 14 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 |
| Difference | +4 | +3 | +1 | +1 | — | -1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 16 | 16 | 12 | 9 | 3 | 0 |
| Reykjavík | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | -2 | -2 | -1 | -1 | +1 | +3 |
Avg low (°C) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | -7 | -8 | -5 | -2 | 3 | 6 | 8 | 8 | 5 | 2 | -3 | -6 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | +5 | +5 | +3 | +3 | +1 | +1 | +1 | — | +2 | +1 | +3 | +5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | -7 | -8 | -5 | -2 | 3 | 6 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 |
| Difference | +5 | +5 | +3 | +3 | +1 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 8 | 8 | 5 | 2 | -3 | -6 |
| Reykjavík | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | +1 | — | +2 | +1 | +3 | +5 |
Precipitation (mm) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | 77 | 65 | 73 | 77 | 97 | 132 | 136 | 158 | 104 | 90 | 90 | 80 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +56 | +62 | +36 | -2 | -4 | -82 | -41 | -23 | +24 | +25 | +59 | +43 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | 77 | 65 | 73 | 77 | 97 | 132 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 |
| Difference | +56 | +62 | +36 | -2 | -4 | -82 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 136 | 158 | 104 | 90 | 90 | 80 |
| Reykjavík | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | -41 | -23 | +24 | +25 | +59 | +43 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | — | — | — | — | — | — | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 | 0 | 0 | 0 | 1 | 21 | 30 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | — | — | — | — | — | — |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | 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 |
|---|---|---|---|---|---|---|
| Arosa | 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 |
|---|---|---|---|---|---|---|
| Arosa | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | 88 | 89 | 87 | 80 | 79 | 79 | 80 | 81 | 83 | 84 | 87 | 88 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | -1 | -2 | — | +4 | +4 | +4 | +5 | +5 | +3 | +4 | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | 88 | 89 | 87 | 80 | 79 | 79 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 |
| Difference | -1 | -2 | — | +4 | +4 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 80 | 81 | 83 | 84 | 87 | 88 |
| Reykjavík | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | +5 | +5 | +3 | +4 | — | — |
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. Arosa trends → · Reykjavík trends →
Methodology & sources
Arosa
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Arosa, about 2 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 Arosa · change Reykjavík → · Arosa page · Reykjavík page