Olten in December
4.0out of 10
Not the best time
Cold: highs around 4°C. Frequent rain: about 14 rainy days.
4°CAvg high
-1°CAvg low
14Rainy days (101 mm)
8:17 hDaylight
08:16Sunrise · 16:33 Sunset
Why this score
- Cold: highs around 4°C
- Frequent rain: about 14 rainy days
- Nights fall to about -1°C
- Rain varies a lot between years (±5.4 days)
What to wear and pack
- Winter coat, hat and scarf
- Rain jacket or compact umbrella
- Gloves for freezing mornings
How reliable is the forecast?
Rain in December varies a lot between years (±5.4 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 | 4°C | -1°C | 86 mm | 13 | – | – | 4.1 |
| February | 5°C | -1°C | 77 mm | 12 | – | – | 4.6 |
| March | 10°C | 2°C | 94 mm | 15 | – | – | 5.0 |
| April | 14°C | 4°C | 106 mm | 16 | – | – | 5.6 |
| May | 18°C | 9°C | 154 mm | 17 | – | – | 5.8 |
| June | 21°C | 12°C | 155 mm | 19 | – | – | 6.2 |
| July | 23°C | 14°C | 170 mm | 18 | – | – | 6.3 |
| August | 23°C | 14°C | 161 mm | 17 | – | – | 6.4 |
| September | 18°C | 10°C | 117 mm | 14 | – | – | 6.5 |
| October | 13°C | 6°C | 98 mm | 13 | – | – | 5.9 |
| November | 7°C | 2°C | 94 mm | 13 | – | – | 4.9 |
| December | 4°C | -1°C | 101 mm | 14 | – | – | 4.0 |
Frequently asked questions
How hot is Olten in December?
Daytime highs average 4°C and nights about -1°C.
When is the best time to visit Olten?
The best months are September, August, July, June.