Monthly climate averages for Colla, Switzerland. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate OverviewColla, Switzerland in December has cold conditions, with highs averaging around 4.4°C (40°F).
This month falls at the beginning of Winter. Cold conditions dominate the month.
Temperatures remain fairly steady throughout December, with daily highs around 4°C (39°F).
Rainfall is heaviest during the first third of the month, while the last third tends to be drier.
The warmest days tend to fall around the 24th, averaging 5.6°C (42°F).
Compared to November, this month is about 3°C cooler with 4 fewer rainy days.
Daily averages based on historical data (2016–2025)
Cold daytime highs of 4°C (40°F) mean shorter outdoor excursions with warming breaks.
Rain usually comes in shorter passing showers rather than all-day rain.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 3°C / -4°C | 0°C / -8°C | 7days (53 mm) Good | 6.3h Fair | 71% Muggy | 1.7 Low | Poor | View Details |
| February | 6°C / -2°C | 3°C / -6°C | 7days (66 mm) Good | 6.8h Fair | 72% Muggy | 2.3 Moderate | Poor | View Details |
| March | 8°C / -1°C | 5°C / -4°C | 10days (102 mm) Wet | 8.2h Good | 71% Muggy | 3.2 Moderate | Poor | View Details |
| April | 12°C / 3°C | 10°C / 0°C | 12days (133 mm) Wet | 9.7h Good | 69% Muggy | 4.9 Moderate | Poor | View Details |
| May | 15°C / 6°C | 15°C / 4°C | 17days (185 mm) Wet | 10.1h Excellent | 75% Muggy | 5.8 High | Wet | View Details |
| June best | 21°C / 11°C | 22°C / 10°C | 16days (185 mm) Wet | 11.8h Excellent | 75% Muggy | 6.5 High | Wet | View Details |
| July best | 22°C / 13°C | 24°C / 13°C | 14days (163 mm) Wet | 12.3h Excellent | 72% Muggy | 6.8 High | Excellent | View Details |
| August best | 22°C / 13°C | 24°C / 13°C | 14days (189 mm) Wet | 11.2h Excellent | 73% Muggy | 6.1 High | Excellent | View Details |
| September best | 18°C / 10°C | 18°C / 9°C | 13days (153 mm) Wet | 9.2h Good | 78% Humid | 4.5 Moderate | Good | View Details |
| October | 14°C / 6°C | 12°C / 4°C | 11days (211 mm) Wet | 6.9h Fair | 80% Humid | 2.8 Moderate | Wet | View Details |
| November | 8°C / 1°C | 5°C / -2°C | 11days (132 mm) Wet | 5.7h Fair | 79% Humid | 2 Low | Poor | View Details |
| December | 4°C / -3°C | 2°C / -6°C | 7days (72 mm) Good | 5.5h Fair | 75% Muggy | 1.5 Low | Poor | View Details |
Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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