Average annual temperature is 5.3 °C
Absolute maximum temperature: 16 °C
Absolute minimum temperature: -14.5 °C
Number of sunny days: 103
Number of rainy days: 236
Number of snow days: 26
Average annual precipitation: 1421 mm
Look at detailed online map of Keflavík
* Weather data for Keflavík Iceland is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 8.3 | 9.1 | 7.3 | 11 | 13 | 15.2 | 15.7 | 16 | 13.7 | 10.4 | 9.7 | 7.8 |
| Average daytime temperature (°C) | 1.1 | 4.8 | 0.8 | 7.2 | 8.7 | 11.1 | 13.2 | 13.6 | 10.5 | 7.2 | 5.5 | 2 |
| Average temperature (°C) | -1.4 | 2.9 | -1.3 | 5.1 | 6.9 | 9.3 | 11 | 11.8 | 9 | 5.8 | 4.1 | 0.4 |
| Average night temperature (°C) | -4.2 | 0.8 | -3.3 | 2.4 | 5.1 | 7.4 | 8.9 | 9.7 | 7.4 | 3.8 | 2.5 | -1.4 |
| Absolute minimum temperature (°C) | -14.5 | -10.8 | -9.2 | -2.6 | -0.2 | 4.4 | 6.3 | 6.8 | 3.5 | 0.8 | -0.8 | -6.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 7 | 10 | 13.4 | 16.7 | 19.9 | 21 | 20.8 | 17.9 | 14.6 | 11.4 | 8.1 | 5.1 |
| Daylight mean duration (h) | 5.6 | 8.6 | 11.8 | 15.1 | 18.4 | 20.7 | 19.5 | 16.3 | 13 | 9.8 | 6.6 | 4.5 |
| Daylight minimum duration (h) | 4.5 | 7.1 | 10.2 | 13.5 | 16.8 | 20 | 18.1 | 14.7 | 11.5 | 8.2 | 5.2 | 4.2 |
| Sunshine mean duration (h) | 1.9 | 3.5 | 7.4 | 8.3 | 6.2 | 7.3 | 13.1 | 9.9 | 6.7 | 4.3 | 2.6 | 2 |
| Precipitation (mm) | 114 | 201 | 39 | 174 | 192 | 135 | 13 | 96 | 107 | 190 | 64 | 97 |
| Sunny days | 10 | 18 | 4 | 1 | 5 | 20 | 10 | 5 | 11 | 10 | 9 | |
| Rainy days | 13 | 21 | 7 | 26 | 30 | 25 | 11 | 21 | 25 | 20 | 19 | 18 |
| Snow days | 8 | 7 | 6 | 1 | 4 |
The best time to visit Keflavík during the most sunny months:
Months with the longest average daylight duration in Keflavík:
The largest precipitation sum in Keflavík is at