Colla, Switzerland experiences average highs of 13°C (55°F) and lows of 4°C (39°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 0.8°C (1.4°F) across the available records.
Colla, Switzerland Weather & Climate 2026
Monthly climate averages for Colla, Switzerland. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.5/10
Best: June, July, August, September
UV Index
4
Low
Temperature 13°C / 4°C
Feels Like 12°C / 2°C
Rainy Days 12
Rainfall 137 mm
Sunshine 9 h
Humidity 74%
Wind Speed 8 km/h
Dew Point 4°C
Snow Days 6 days
Frost Days 16 days
Hottest Month
22°C
July
Avg Low13°C
Rain14days
Coldest Month
-4°C
January
Avg High3°C
Rain7days
Driest Month
7days
January
Avg High3°C
Avg Low-4°C
Windiest Month
9 km/h
April (Gusts 34)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures.
Sun Position
Sunrise 05:33
Daylight 15.7h
Sunset 21:18
Live conditions—
Colla on the map · live conditions
Colla, Switzerland
- Continent
- Europe
- Country
- Switzerland
- City
- Colla
- Population
- 624
- Elevation
- 972 m
- Coordinates
- 46.09°, 9.05°
Seasonal Breakdown
Spring
Mar–May
Avg High 12°C
Avg Low 3°C
Rain 13 days/mo
Summer
Jun–Aug
Avg High 22°C
Avg Low 13°C
Rain 15 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 13°C
Avg Low 6°C
Rain 12 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 4°C
Avg Low -3°C
Rain 7 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 3°C / -4°C . Feb: 6°C / -2°C . Mar: 8°C / -1°C . Apr: 12°C / 3°C . May: 15°C / 6°C . Jun: 21°C / 11°C . Jul: 22°C / 13°C . Aug: 22°C / 13°C . Sep: 18°C / 10°C . Oct: 14°C / 6°C . Nov: 8°C / 1°C . Dec: 4°C / -3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 53 mm. Feb: 66 mm. Mar: 102 mm. Apr: 133 mm. May: 185 mm. Jun: 185 mm. Jul: 163 mm. Aug: 189 mm. Sep: 153 mm. Oct: 211 mm. Nov: 132 mm. Dec: 72 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 71%. Feb: 72%. Mar: 71%. Apr: 69%. May: 75%. Jun: 75%. Jul: 72%. Aug: 73%. Sep: 78%. Oct: 80%. Nov: 79%. Dec: 75%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 8 km/h . Feb: 8 km/h . Mar: 8 km/h . Apr: 9 km/h . May: 8 km/h . Jun: 8 km/h . Jul: 8 km/h . Aug: 8 km/h . Sep: 7 km/h . Oct: 7 km/h . Nov: 8 km/h . Dec: 8 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 7h. Mar: 8h. Apr: 10h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 9h. Oct: 7h. Nov: 6h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 2. Mar: UV 3. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 9 days. Feb: 7 days. Mar: 6 days. Apr: 2 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 5 days. Dec: 6 days.
Climate Trends
Average highs have warmed by 0.8°C (1.4°F) across the available records. Average rainfall is trending wetter by about 12 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jun 2025 · 22°C | Jul · 22°C |
| Coldest month | Jan 2025 · -4°C | Jan · -4°C |
| Wettest month | Aug 2025 · 264 mm | Oct · 211 mm |
| Windiest month | Jul 2025 · 8 km/h | Apr · 9 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Wet June best
Wet July best
Excellent August best
Excellent September best
Good October
Wet November
Poor December
Poor | 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 |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Colla are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Colla, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Colla is July, with average daytime highs of 22°C (72°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Colla is January, with average overnight lows of -4°C (25°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Colla is October, averaging 211mm of precipitation across 11 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Colla runs through May, June, July, August, with the heaviest rainfall in May. Based on 10-year averages for Colla.
Colla receives approximately 104 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Colla.
The least favorable months to visit Colla are January, February, November, December, primarily due to very cold temperatures. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Colla is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Colla is 74%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Colla receives snow. Months with snowfall average 6 snow days and 10 cm (4 in) of accumulation, with about 16 frost days during winter.
Average wind speeds in Colla are 8 km/h (5 mph). The windiest month is April with peak winds reaching 9 km/h (5 mph) (gusts up to 34 km/h / 21 mph).
Colla averages 5 clear-sky days per month with overall cloud cover around 55%. The clearest skies occur in January.
The annual average dew point in Colla is 4°C (39°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Colla has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Colla ranges from 2°C (36°F) to 12°C (54°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Colla, with a climate score of 7.2/10. Consider visiting during June, July, August, September instead for better conditions.
For June in Colla, pack Warm evening layer, Umbrella, Waterproof jacket, Waterproof shoes, Sunscreen (SPF 30+). With average highs of 21°C (69°F) and 16 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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