Reykjavik
Iceland
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 17 | 15 | 12 | 10 | 8 | 8 | 12 | 12 | 20 | 18 | 25 | 20 | 25 |
| Average high, °C | 8 | 5 | 5 | 0 | -1 | 1 | 3 | 5 | 8 | 10 | 14 | 12 | 6 |
| Average temperature, °C | 6 | 2 | 3 | -1 | -3 | -1 | 0 | 2 | 5 | 7 | 11 | 9 | 3 |
| Average low, °C | 5 | 0 | 1 | -2 | -5 | -3 | -2 | 0 | 2 | 5 | 8 | 6 | 1 |
| Record low, °C | 0 | -7 | -8 | -15 | -17 | -17 | -12 | -8 | -7 | -1 | 3 | -2 | -17 |
| Rain, days | 21 | 20 | 14 | 10 | 9 | 8 | 10 | 11 | 17 | 18 | 19 | 19 | 176 |
| Snow, days | 1 | 9 | 13 | 18 | 18 | 15 | 19 | 17 | 5 | 1 | 0 | 0 | 116 |
| Fog, days | 6 | 4 | 1 | 0 | 0 | 1 | 1 | 2 | 8 | 11 | 15 | 12 | 61 |
| Average precipitation, mm. | 40 | 40 | 30 | 40 | 20 | 30 | 40 | 40 | 20 | 20 | 20 | 50 | 390 |
| Relative humidity, % | 82 | 81 | 81 | 83 | 89 | 84 | 84 | 82 | 79 | 80 | 76 | 79 | 82 |
| Relative humidity morning, % | 83 | 83 | 82 | 82 | 82 | 82 | 83 | 81 | 82 | 81 | 84 | 84 | 82 |
| Relative humidity evening, % | 76 | 78 | 79 | 79 | 78 | 77 | 76 | 74 | 75 | 76 | 81 | 79 | 77 |
| Wind speed, km/h | 12 | 16 | 17 | 19 | 19 | 19 | 17 | 17 | 9 | 9 | 12 | 14 | 15 |
| Day Length, часов | 14 | 10 | 7 | 5 | 6 | 9 | 13 | 17 | 21 | 23 | 21 | 18 | 14 |
| Dew point, °C | 3 | 0 | 0 | -3 | -5 | -3 | -1 | 0 | 1 | 4 | 6 | 5 | 7 |
| Growing degree-day, °C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 0 | 43 |
| Solar radiation, global, Mj/m2 | 7 | 3 | 1 | 0 | 0 | 2 | 6 | 12 | 17 | 20 | 17 | 13 | 8 |