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Monthey Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Monthey.
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Climate overview of Monthey
Monthey, Canton of Valais, Switzerland, experiences significant temperature variation throughout the year. Summers bring daytime highs of 21°C (70°F) in July, while winters cool to 0°C (32°F) in January.
With around 1893 mm (75 in) of annual rain/snowfall, Monthey has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has a distinct rainy season from May to August, with pleasant summers and very cold winters. The wettest month is June. The sunniest month is July, with 9.0 hours of sunshine per day on average.
Monthey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Monthey - and find the best time to visit.
Monthly Temperature in Monthey
Depending on the time of the year, temperatures range from pleasant to very cold in Monthey. Average daytime temperatures reach a pleasant 21°C (70°F) in July. In January, the coolest month of the year, temperatures drop to a very cold 0°C (32°F).
At night, temperatures range from around 9°C (48°F) in July to -9°C (16°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Monthey
Monthey has a relatively rain/snowy climate with high precipitation levels, averaging 1893 mm (75 in) of rain/snowfall annually. Monthey experiences moderate seasonal variation in rainfall, with monthly averages ranging from 211 mm (8.3 in) in June, the wettest month, and 123 mm (4.8 in) in October, the driest month. For more details, please visit our Monthey Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Monthey
Monthey can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Sion, Switzerland (29 KM, 18 Miles).
Daily hours of sunshine
Data from: Sion, Switzerland (29 KM, 18 Miles).
Daily percentage of sunshine
Data from: Sion, Switzerland (29 KM, 18 Miles).
Humidity in Monthey by Month
The relative humidity is high throughout the year in Monthey.
The city experiences its highest humidity in December, reaching 83%. In April, the humidity drops to its lowest level at 59%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Sion, Switzerland (29 KM, 18 Miles).
Best Time to Visit Monthey
Compared with the rest of the year, the most comfortable conditions in Monthey are usually found in August. Conditions are generally least comfortable in January, February, March, April, May, June, October, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
wet
Apr
wet
May
wet
Jun
very wet
Jul
mixed
Aug
good
Sep
mixed
Oct
wet
Nov
wet
Dec
cold
- Best overall: August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: A distinct rainy season from May to August, with pleasant summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Monthey
What is the best time to visit Monthey?
August typically offers the most optimal weather in Monthey. In contrast, January, February, March, April, May, June, October, November and December tend to have less optimal conditions. Monthey has a distinct rainy season from May to August, with pleasant summers and very cold winters.
What temperatures can I expect in Monthey?
Daytime highs range from 0°C (32°F) in January to 21°C (70°F) in July. Nighttime lows range from -9°C (16°F) to 9°C (48°F). Temperatures vary considerably through the year.
How much rain does Monthey get?
Annual rainfall is around 1893 mm (75 in). June is the wettest month with 211 mm (8.3 in), while October is the driest with 123 mm (4.8 in).
How sunny is Monthey?
Monthey receives around 2,171 hours of sunshine per year. July is the sunniest month with 270 hours, while December is the cloudiest with just 70 hours. Overall, Monthey enjoys abundant sunshine.
Monthey 3-Day Forecast
Monthey on the map
Monthey is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Zürich
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