Hafnarfjörður in September
4.7out of 10
Not the best time
Cool: highs only around 11°C. Very wet: about 18 rainy days.
11°CAvg high
6°CAvg low
18Rainy days (134 mm)
12:37 hDaylight
07:04Sunrise · 19:40 Sunset
Why this score
- Cool: highs only around 11°C
- Very wet: about 18 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 (±3.3 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 | -2°C | 128 mm | 18 | – | – | 3.1 |
| February | 2°C | -2°C | 127 mm | 17 | – | – | 3.1 |
| March | 3°C | -2°C | 118 mm | 17 | – | – | 3.4 |
| April | 6°C | 1°C | 101 mm | 16 | – | – | 4.2 |
| May | 10°C | 4°C | 90 mm | 16 | – | – | 4.9 |
| June | 12°C | 7°C | 79 mm | 14 | – | – | 5.6 |
| July | 14°C | 9°C | 85 mm | 15 | – | – | 5.9 |
| August | 13°C | 9°C | 104 mm | 16 | – | – | 5.5 |
| September | 11°C | 6°C | 134 mm | 18 | – | – | 4.7 |
| October | 7°C | 3°C | 116 mm | 15 | – | – | 4.5 |
| November | 4°C | 0°C | 117 mm | 16 | – | – | 3.7 |
| December | 3°C | -2°C | 129 mm | 17 | – | – | 3.2 |
Frequently asked questions
How hot is Hafnarfjörður in September?
Daytime highs average 11°C and nights about 6°C.
When is the best time to visit Hafnarfjörður?
The best months are July, June, August.