Saillon, Switzerland experiences average highs of 16°C (61°F) and lows of 6°C (43°F) throughout the year. Rainfall is frequent, averaging about 15 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 1.3°C (2.3°F) across the available records.
Saillon, Switzerland Weather & Climate 2026
Monthly climate averages for Saillon, Switzerland. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: May–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5/10
Best: June, July, August, September, October
UV Index
4
Low
Temperature 16°C / 6°C
Feels Like 15°C / 4°C
Rainy Days 15
Rainfall 145 mm
Sunshine 9 h
Humidity 77%
Wind Speed 7 km/h
Dew Point 7°C
Snow Days 12 days
Frost Days 15 days
Hottest Month
26°C
August
Avg Low15°C
Rain15days
Coldest Month
-5°C
January
Avg High5°C
Rain14days
Driest Month
12days
February
Avg High8°C
Avg Low-2°C
Windiest Month
8 km/h
December (Gusts 41)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:40
Daylight 15.8h
Sunset 21:26
Live conditions—
Saillon on the map · live conditions
Saillon, Switzerland
- Continent
- Europe
- Country
- Switzerland
- City
- Saillon
- Population
- 1.6K
- Coordinates
- 46.17°, 7.19°
Seasonal Breakdown
Spring
Mar–May
Avg High 14°C
Avg Low 5°C
Rain 16 days/mo
Summer
Jun–Aug
Avg High 25°C
Avg Low 15°C
Rain 17 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 17°C
Avg Low 7°C
Rain 14 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 6°C
Avg Low -4°C
Rain 13 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: 5°C / -5°C . Feb: 8°C / -2°C . Mar: 11°C / 1°C . Apr: 14°C / 5°C . May: 18°C / 9°C . Jun: 24°C / 14°C . Jul: 26°C / 16°C . Aug: 26°C / 15°C . Sep: 22°C / 12°C . Oct: 18°C / 8°C . Nov: 11°C / 1°C . Dec: 6°C / -4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 151 mm. Feb: 101 mm. Mar: 123 mm. Apr: 120 mm. May: 186 mm. Jun: 173 mm. Jul: 181 mm. Aug: 149 mm. Sep: 136 mm. Oct: 119 mm. Nov: 132 mm. Dec: 164 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 75%. Mar: 75%. Apr: 74%. May: 80%. Jun: 79%. Jul: 77%. Aug: 77%. Sep: 82%. Oct: 81%. Nov: 80%. Dec: 74%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 7 km/h . Feb: 7 km/h . Mar: 7 km/h . Apr: 6 km/h . May: 6 km/h . Jun: 6 km/h . Jul: 6 km/h . Aug: 6 km/h . Sep: 6 km/h . Oct: 7 km/h . Nov: 7 km/h . Dec: 8 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 7h. Mar: 9h. Apr: 11h. May: 11h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 9h. Oct: 8h. Nov: 6h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 6. 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: 17 days. Feb: 14 days. Mar: 17 days. Apr: 11 days. May: 8 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 3 days. Oct: 6 days. Nov: 14 days. Dec: 16 days.
Climate Trends
Average highs have warmed by 1.3°C (2.3°F) across the available records. Average rainfall is trending drier by about 18 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jun 2025 · 27°C | Aug · 26°C |
| Coldest month | Jan 2025 · -4°C | Jan · -5°C |
| Wettest month | Sep 2025 · 239 mm | May · 186 mm |
| Windiest month | Jan 2025 · 8 km/h | Dec · 8 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Wet June best
Wet July best
Excellent August best
Excellent September best
Good October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 5°C / -5°C | 2°C / -9°C | 14days (151 mm) Wet | 5.8h Fair | 74% Muggy | 1.9 Low | Poor | View Details |
| February | 8°C / -2°C | 6°C / -5°C | 12days (101 mm) Wet | 7.3h Good | 75% Muggy | 2.8 Moderate | Poor | View Details |
| March | 11°C / 1°C | 9°C / -2°C | 14days (123 mm) Wet | 9h Good | 75% Muggy | 4.2 Moderate | Poor | View Details |
| April | 14°C / 5°C | 14°C / 3°C | 14days (120 mm) Wet | 10.8h Excellent | 74% Muggy | 5.5 High | Fair | View Details |
| May | 18°C / 9°C | 18°C / 7°C | 20days (186 mm) Wet | 10.6h Excellent | 80% Humid | 5.9 High | Wet | View Details |
| June best | 24°C / 14°C | 27°C / 14°C | 19days (173 mm) Wet | 11.8h Excellent | 79% Humid | 7 High | Wet | View Details |
| July best | 26°C / 16°C | 29°C / 17°C | 18days (181 mm) Wet | 12.3h Excellent | 77% Humid | 7 High | Excellent | View Details |
| August best | 26°C / 15°C | 29°C / 16°C | 15days (149 mm) Wet | 11.2h Excellent | 77% Humid | 6.3 High | Excellent | View Details |
| September best | 22°C / 12°C | 23°C / 12°C | 15days (136 mm) Wet | 9.3h Good | 82% Humid | 4.8 Moderate | Good | View Details |
| October best | 18°C / 8°C | 18°C / 6°C | 13days (119 mm) Wet | 7.7h Good | 81% Humid | 3.2 Moderate | Good | View Details |
| November | 11°C / 1°C | 9°C / -2°C | 14days (132 mm) Wet | 6.3h Fair | 80% Humid | 2 Low | Poor | View Details |
| December | 6°C / -4°C | 3°C / -7°C | 14days (164 mm) Wet | 5.3h Fair | 74% Muggy | 1.6 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Saillon are June, July, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Saillon, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Saillon is August, with average daytime highs of 26°C (79°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Saillon is January, with average overnight lows of -5°C (22°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Saillon is May, averaging 186mm of precipitation across 20 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Saillon runs through May, June, July, August, with the heaviest rainfall in May. Based on 10-year averages for Saillon.
Saillon receives approximately 107 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Saillon.
The least favorable months to visit Saillon are January, February, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August, September, October instead.
The annual average UV index in Saillon is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Saillon is 77%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Saillon receives snow. Months with snowfall average 12 snow days and 54 cm (21 in) of accumulation, with about 15 frost days during winter.
Average wind speeds in Saillon are 7 km/h (4 mph). The windiest month is December with peak winds reaching 8 km/h (5 mph) (gusts up to 41 km/h / 25 mph).
Saillon averages 3 clear-sky days per month with overall cloud cover around 63%. The clearest skies occur in December.
The annual average dew point in Saillon is 7°C (45°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Saillon 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 Saillon ranges from 4°C (39°F) to 15°C (59°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 Saillon, with a climate score of 7.4/10. Consider visiting during June, July, August, September, October instead for better conditions.
For June in Saillon, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 24°C (76°F) and 19 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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