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Arosa vs Reykjavík
Comparing Arosa change · Reykjavík change
Reykjavík is the warmer of the two — about 2°F on the annual average; Reykjavík is the wetter, with 6 in 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 2°F on the annual average.
Precipitation
Reykjavík is the wetter — about 6 in 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 (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | 31 | 31 | 36 | 41 | 49 | 57 | 60 | 60 | 53 | 47 | 38 | 32 |
| Reykjavík | 38 | 37 | 38 | 44 | 49 | 54 | 57 | 56 | 52 | 45 | 40 | 38 |
| Difference | +6 | +6 | +3 | +2 | -1 | -3 | -3 | -4 | -1 | -2 | +2 | +6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | 31 | 31 | 36 | 41 | 49 | 57 |
| Reykjavík | 38 | 37 | 38 | 44 | 49 | 54 |
| Difference | +6 | +6 | +3 | +2 | -1 | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 60 | 60 | 53 | 47 | 38 | 32 |
| Reykjavík | 57 | 56 | 52 | 45 | 40 | 38 |
| Difference | -3 | -4 | -1 | -2 | +2 | +6 |
Avg low (°F) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | 20 | 19 | 23 | 29 | 37 | 42 | 46 | 47 | 40 | 35 | 27 | 22 |
| Reykjavík | 29 | 28 | 29 | 34 | 39 | 44 | 47 | 47 | 43 | 37 | 32 | 31 |
| Difference | +9 | +9 | +6 | +5 | +3 | +1 | +1 | +1 | +3 | +2 | +5 | +9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | 20 | 19 | 23 | 29 | 37 | 42 |
| Reykjavík | 29 | 28 | 29 | 34 | 39 | 44 |
| Difference | +9 | +9 | +6 | +5 | +3 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 46 | 47 | 40 | 35 | 27 | 22 |
| Reykjavík | 47 | 47 | 43 | 37 | 32 | 31 |
| Difference | +1 | +1 | +3 | +2 | +5 | +9 |
Precipitation (in) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | 3 | 2.5 | 2.9 | 3 | 3.8 | 5.2 | 5.4 | 6.2 | 4.1 | 3.5 | 3.5 | 3.2 |
| Reykjavík | 5.2 | 5 | 4.3 | 3 | 3.7 | 2 | 3.8 | 5.3 | 5 | 4.5 | 5.9 | 4.9 |
| Difference | +2.2 | +2.4 | +1.4 | -0.1 | -0.2 | -3.2 | -1.6 | -0.9 | +0.9 | +1 | +2.3 | +1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Arosa | 3 | 2.5 | 2.9 | 3 | 3.8 | 5.2 |
| Reykjavík | 5.2 | 5 | 4.3 | 3 | 3.7 | 2 |
| Difference | +2.2 | +2.4 | +1.4 | -0.1 | -0.2 | -3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | 5.4 | 6.2 | 4.1 | 3.5 | 3.5 | 3.2 |
| Reykjavík | 3.8 | 5.3 | 5 | 4.5 | 5.9 | 4.9 |
| Difference | -1.6 | -0.9 | +0.9 | +1 | +2.3 | +1.7 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arosa | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 |
|---|---|---|---|---|---|---|
| Arosa | — | — | — | — | — | — |
| Reykjavík | 10.8 | 15.8 | 11.4 | 4.6 | 0.4 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Arosa | — | — | — | — | — | — |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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