September
Weather in September
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Biel/Bienne in September?
What is the average humidity in September in Biel/Bienne?
How many days does it rain in September in Biel/Bienne?
When it does not snow in Biel/Bienne?
What is the average length of the day in September in Biel/Bienne?
What time are sunrise and sunset in September in Biel/Bienne?
Average temperature in September
Biel/Bienne, Switzerland
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is July (25.6°C).
The month with the lowest average high temperature is January (3.7°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-1.5°C).
Average humidity in September
Biel/Bienne, Switzerland
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (67%).
Average rainfall in September
Biel/Bienne, Switzerland
- Average rainfall in September: 97mm
The wettest month (with the highest rainfall) is December (117mm).
The driest month (with the least rainfall) is April (79mm).
Average rainfall days in September
Biel/Bienne, Switzerland
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is May (12.2 days).
The month with the least rainy days is September (8.8 days).
Average snowfall in September
Biel/Bienne, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Biel/Bienne, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September
Biel/Bienne, Switzerland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
