Best Time to Visit Reykjavik
No month in Reykjavik combines a mild average temperature (15–28°C) with low rainfall. The driest are July to August, with 85–109 mm of rain.
Reykjavik weather by month
The wettest month in Reykjavik is September with 161 mm of rain, and the warmest is July at an average 11°C. The coolest is February at 1°C.
| Month | Average temperature | Rainfall | Verdict |
|---|---|---|---|
| January | 1°C / 35°F | 153 mm | Wet |
| February | 1°C / 34°F | 136 mm | Cold |
| March | 2°C / 35°F | 138 mm | Cold |
| April | 4°C / 39°F | 106 mm | Cold |
| May | 6°C / 43°F | 83 mm | Cool |
| June | 9°C / 49°F | 72 mm | Cool |
| July | 11°C / 52°F | 85 mm | Driest |
| August | 11°C / 51°F | 109 mm | Driest |
| September | 8°C / 47°F | 161 mm | Wet |
| October | 5°C / 41°F | 131 mm | Cool |
| November | 3°C / 37°F | 137 mm | Cold |
| December | 2°C / 35°F | 154 mm | Wet |
How we pick the best months
- Best: an average temperature of 15–28°C and low rainfall for Reykjavik: under 150 mm, and no more than 167 mm, a quarter above Reykjavik's median month (never set below 60 mm).
- If no month qualifies, we show the three driest months that average 10–30°C instead.
- Wet: 150 mm of rain or more. Rainy: more than 167 mm. Hot: 29°C or more on average. Cool: under 15°C. Cold: under 5°C.
Averages cover day and night, so afternoons are warmer than the figure shown. Weather is only one reason to pick a month: school holidays, festivals and prices matter too.
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Where these numbers come from
Monthly averages for January 2001 – December 2020 from the NASA POWER project, for the area around Keflavík (KEF) at 63.98, -22.61. The model covers a grid about 50 km across, so a coastal or hilly spot can run a degree or two different. Retrieved 12 September 2026.
The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) Prediction of Worldwide Energy Resource (POWER) Project funded through the NASA Earth Science/Applied Science Program.