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Olten Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Olten.
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Climate overview of Olten
Olten, Canton of Solothurn, Switzerland, sees big temperature differences between seasons, with July peaking at 25°C (77°F) and January dropping to 5°C (41°F).
The city receives considerable rain/snowfall, with around 1424 mm (56 in) annually. July is the wettest month. It has warm summers and cold winters. The sunniest month is July, with 7.9 hours of sunshine per day on average.
Olten Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Olten - and find the best time to visit.
Monthly Temperature in Olten
Visitors to Olten can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 25°C (77°F) in July to a chilly 5°C (41°F) in the coolest month, January.
Nights vary from 14°C (57°F) in July to around -1°C (30°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Olten
Olten is known for its substantial rain/snowfall, with annual precipitation reaching 1424 mm (56 in). Olten offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month July (159 mm (6.3 in)) and the driest month February (88 mm (3.5 in)) is not too significant. For more details, please visit our Olten 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 Olten
For those who appreciate different seasons, Olten serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.9 hours of sunshine daily, and embrace the darker days in December, offering only 1.8 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Basel, Switzerland (33 KM, 20 Miles).
Daily hours of sunshine
Data from: Basel, Switzerland (33 KM, 20 Miles).
Daily percentage of sunshine
Data from: Basel, Switzerland (33 KM, 20 Miles).
Humidity in Olten by Month
The relative humidity is high throughout the year in Olten.
The city experiences its highest humidity in November, reaching 82%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Basel, Switzerland (33 KM, 20 Miles).
Best Time to Visit Olten
For comfortable weather, consider visiting Olten in June, July, August and September. Conditions are usually least favourable in January, February, 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
mixed
Apr
mixed
May
good
Jun
very good
Jul
very good
Aug
very good
Sep
very good
Oct
mixed
Nov
cold
Dec
wet
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Olten
What is the best time to visit Olten?
June, July, August and September typically offer the most optimal weather in Olten. In contrast, January, February, November and December tend to have less optimal conditions. Olten has warm summers and cold winters.
What temperatures can I expect in Olten?
Daytime highs range from 5°C (41°F) in January to 25°C (77°F) in July. Nighttime lows range from -1°C (30°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Olten get?
Annual rainfall is around 1424 mm (56 in). July is the wettest month with 159 mm (6.3 in), while February is the driest with 88 mm (3.5 in).
How sunny is Olten?
Olten receives around 1,701 hours of sunshine per year. July is the sunniest month with 237 hours, while December is the cloudiest with just 53 hours.
Olten 3-Day Forecast
Olten on the map
Olten is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Zürich
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