September Weather in Tromso

Last updated: March 2, 2024

The weather in Tromso, Norway, during September is characterized by an average temperature of 8°C (47°F). Highs can soar to 18°C (65°F), while lows may dip to 1°C (34°F). Typically, the humidity level in Tromso throughout September hovers around 91%.

1°C (34°F)

Minimum temperature

8°C (47°F)

Average temperature

18°C (65°F)

Maximum temperature

91%

Humidity

Precipitation and Sunshine hours

In September, Tromso averages 132 mm (5.2 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 13 hours 13 minutes of daylight, with the sun shining for approximately 8 hours 45 minutes each day. Additionally, there is a 21% probability of sunny days during this period.

132 mm (5.2 inches)

Precipitation

17 rainy days

Rainy days

8 hours 45 minutes

Sunshine hours

21%

Chance of sun

UV Index

In September, the UV Index in Tromso reaches a maximum of 2, indicating a level of Low exposure. The most intense UV radiation typically occurs between 10:00 and 12:00, during which unprotected skin may burn in as little as 45 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	1	1	1	2	2	2	2	2	2	1	1	1	1
Exposure	Low
Time to burn	45 min