Tønsberg in September
6.5out of 10
Possible, with caveats
Mild: highs around 16°C. Frequent rain: about 11 rainy days.
16°CAvg high
11°CAvg low
11Rainy days (107 mm)
12:30 hDaylight
06:58Sunrise · 19:28 Sunset
Why this score
- Mild: highs around 16°C
- Frequent rain: about 11 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±4.0 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 | 1°C | -2°C | 82 mm | 12 | – | – | 3.8 |
| February | 2°C | -2°C | 60 mm | 9 | – | – | 4.3 |
| March | 5°C | 0°C | 56 mm | 9 | – | – | 4.9 |
| April | 9°C | 3°C | 53 mm | 9 | – | – | 5.9 |
| May | 14°C | 8°C | 66 mm | 10 | – | – | 6.5 |
| June | 18°C | 12°C | 82 mm | 11 | – | – | 7.0 |
| July | 20°C | 15°C | 82 mm | 10 | – | – | 7.4 |
| August | 19°C | 15°C | 91 mm | 12 | – | – | 7.0 |
| September | 16°C | 11°C | 107 mm | 11 | – | – | 6.5 |
| October | 10°C | 7°C | 120 mm | 13 | – | – | 5.2 |
| November | 6°C | 3°C | 115 mm | 14 | – | – | 4.5 |
| December | 3°C | -1°C | 86 mm | 13 | – | – | 4.0 |
Frequently asked questions
How hot is Tønsberg in September?
Daytime highs average 16°C and nights about 11°C.
When is the best time to visit Tønsberg?
The best months are July, June, August.