Reykjavík in September
4.8out of 10
Not the best time
Cool: highs only around 11°C. Very wet: about 17 rainy days.
11°CAvg high
6°CAvg low
17Rainy days (126 mm)
12:37 hDaylight
07:04Sunrise · 19:40 Sunset
Why this score
- Cool: highs only around 11°C
- Very wet: about 17 rainy days
What to wear and pack
- A warm jacket
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±3.5 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 2°C | -3°C | 124 mm | 18 | – | – | 2.9 |
| February | 2°C | -3°C | 123 mm | 17 | – | – | 3.1 |
| March | 3°C | -2°C | 114 mm | 17 | – | – | 3.3 |
| April | 6°C | 1°C | 90 mm | 15 | – | – | 4.3 |
| May | 9°C | 4°C | 83 mm | 15 | – | – | 5.1 |
| June | 12°C | 7°C | 69 mm | 13 | – | – | 5.8 |
| July | 14°C | 9°C | 76 mm | 13 | – | – | 6.0 |
| August | 13°C | 9°C | 93 mm | 15 | – | – | 5.7 |
| September | 11°C | 6°C | 126 mm | 17 | – | – | 4.8 |
| October | 7°C | 2°C | 111 mm | 15 | – | – | 4.5 |
| November | 4°C | 0°C | 113 mm | 16 | – | – | 3.7 |
| December | 2°C | -2°C | 124 mm | 17 | – | – | 3.2 |
Frequently asked questions
How hot is Reykjavík in September?
Daytime highs average 11°C and nights about 6°C.
When is the best time to visit Reykjavík?
The best months are July, June, August.