Grenchen weather in September (Canton of Solothurn, Switzerland)

What can you expect from the weather in Grenchen during September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In September, Grenchen typically experiences pleasant temperatures and high rainfall. Daytime temperatures hover around 20°C, while nights can cool down to about 10°C.

Grenchen in September usually receives high rainfall, averaging around 116 mm for the month. Based on our climate data of the past 30 years, about 13 days of rain are anticipated.

The city usually sees around 176 hours of sunlight, indicating a moderately sunny period.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Grenchen. June, July, August and September typically offer the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Grenchen climate page with graphs.

 

Grenchen, monthly averages in September

Min TemperatureMin Temperature 10°C  
Max TemperatureMax Temperature 20°C  
Chance of RainChance of Rain 44%  
PrecipitationPrecipitation 116 mm  
Rainy daysRainy days 13 days  
HumidityHumidity 79% *  
SunshineSunshine 176 hours *  
Percentage SunshinePercentage Sunshine 49% *  
* Data from: Bern, Switzerland (27 KM, 17 Miles).

Where to go in Switzerland in September

Find out more about the weather in Switzerland in September and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Grenchen in September?

For visitors traveling to Grenchen, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
6/10
Cycling
9/10
Walking
9/10
Camping
6/10
Outdoor sports
9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Grenchen.

Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.