Home › Compare › Köln vs Reykjavík
Köln vs Reykjavík
Comparing Köln change · Reykjavík change
Köln is the warmer of the two — about 6°C on the annual average; Reykjavík is the wetter, with 530 mm more rain a year, and Köln the sunnier.
How the seasons compare
The differences between Köln and Reykjavík, in everyday terms.
Summers
Köln has far hotter summers
Köln: Mild
Reykjavík: Cool
Winters
Köln has milder winters
Köln: Chilly
Reykjavík: Cold
Rain & snow
Reykjavík is wetter
Köln: Moderate rainfall
Reykjavík: Wet
Sky
Köln is sunnier
Köln: Often grey
Reykjavík: Often grey
Month-by-month charts
Temperature
Köln is the warmer of the two — about 6°C on the annual average.
Precipitation
Reykjavík is the wetter — about 530 mm more across the year.
Clear skies
Köln 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) Köln runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 6 | 7 | 11 | 16 | 20 | 23 | 25 | 25 | 20 | 15 | 10 | 6 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | -3 | -4 | -8 | -10 | -10 | -10 | -11 | -11 | -9 | -8 | -5 | -3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 6 | 7 | 11 | 16 | 20 | 23 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 |
| Difference | -3 | -4 | -8 | -10 | -10 | -10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 25 | 25 | 20 | 15 | 10 | 6 |
| Reykjavík | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | -11 | -11 | -9 | -8 | -5 | -3 |
Avg low (°C) Köln runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 0 | 0 | 2 | 4 | 8 | 11 | 13 | 13 | 10 | 7 | 3 | 1 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | -2 | -2 | -4 | -3 | -4 | -5 | -5 | -4 | -3 | -4 | -3 | -2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 0 | 0 | 2 | 4 | 8 | 11 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 |
| Difference | -2 | -2 | -4 | -3 | -4 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 13 | 13 | 10 | 7 | 3 | 1 |
| Reykjavík | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | -5 | -4 | -3 | -4 | -3 | -2 |
Precipitation (mm) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 62 | 54 | 55 | 48 | 62 | 86 | 87 | 83 | 67 | 65 | 64 | 69 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +71 | +73 | +54 | +27 | +31 | -36 | +8 | +51 | +61 | +50 | +86 | +54 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 62 | 54 | 55 | 48 | 62 | 86 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 |
| Difference | +71 | +73 | +54 | +27 | +31 | -36 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 87 | 83 | 67 | 65 | 64 | 69 |
| Reykjavík | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +8 | +51 | +61 | +50 | +86 | +54 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | — | — | — | — | — | — | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 | 0 | 0 | 0 | 1 | 21 | 30 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | — | — | — | — | — | — |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 75 | 74 | 73 | 70 | 72 | 72 | 70 | 68 | 67 | 72 | 78 | 77 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +10 | +8 | +9 | +9 | +4 | +7 | +12 | +12 | +12 | +5 | +4 | +7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 75 | 74 | 73 | 70 | 72 | 72 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 |
| Difference | +10 | +8 | +9 | +9 | +4 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 70 | 68 | 67 | 72 | 78 | 77 |
| Reykjavík | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +12 | +12 | +12 | +5 | +4 | +7 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 92 | 89 | 84 | 79 | 77 | 74 | 70 | 69 | 75 | 84 | 91 | 93 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | -5 | -2 | +2 | +6 | +6 | +9 | +15 | +16 | +11 | +4 | -4 | -6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 92 | 89 | 84 | 79 | 77 | 74 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 |
| Difference | -5 | -2 | +2 | +6 | +6 | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 70 | 69 | 75 | 84 | 91 | 93 |
| Reykjavík | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | +15 | +16 | +11 | +4 | -4 | -6 |
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. Köln trends → · Reykjavík trends →
Reykjavík from Cfc to Cfb.
Methodology & sources
Köln
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Koln-bonn, a weather station, about 16 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 Köln · change Reykjavík → · Köln page · Reykjavík page