Lillestrøm Weather & Climate: Best Time to Visit

The climate in Lillestrøm is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 23°C (73°F) in July, the warmest time of the year, to a very cold 0°C (32°F) during cooler months like January.

At night, you can expect temperatures ranging from 12°C (54°F) in July to around -6°C (21°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Lillestrøm receives mid-range precipitation levels, with 954 mm (38 in) annually. While rainfall varies throughout the year, each season offers its own charm. August brings wetter days averaging 107 mm (4.2 in) of precipitation, spread over 16 rainy days.

In contrast, the driest month March experiences a drier climate, with about 52 mm (2 in) of snow/rainfall spread across 14 snowy/rainy days. For more details, please visit our Lillestrøm Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Lillestrøm. While May receives considerable daily sunshine with up to 8.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.3 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Lillestrøm.

The city experiences its highest humidity in November, reaching 86%. In May, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year