Long-term weather forecast
Long-term weather forecast

September weather forecast and Climate
Uppsala, Sweden

  • The average high temperature in September: 15.9°C

The warmest month (with the highest average high temperature) is July (22.7°C).
The month with the lowest average high temperature is January (-0.3°C).

  • The average low temperature in September: 7.3°C

The month with the highest average low temperature is July (12.5°C).
The coldest month (with the lowest average low temperature) is February (-6.2°C).

  • The average humidity in September: 81%

Months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is May (66%).

  • The average rainfall in September: 52.4mm

The wettest month (with the highest rainfall) is August (73.6mm).
The driest month (with the lowest rainfall) is February (29.7mm).

  • The average rainfall days in September: 14 days

The month with the highest number of rainy days is November (17 days).
Months with the lowest number of rainy days are May and June (10 days).

  • The average snowfall in September: 0mm

The month with the highest snowfall is January (260mm).
Months with the lowest snowfall are June, July, August and September (0mm).

  • The average daylight in September: 13h

The month with the longest days is June (Average daylight: 19h).
The month with shortest days is December (Average daylight: 6h).

  • The average sunshine in September: 5.2h

The month with most sunshine is May (Average sunshine: 9.1h).
The month with least sunshine is December (Average sunshine: 1.1h).

  • The average UV index in September: 3

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).