Climate of Tromsø, Norway

Dfc

Köppen-Geiger climate classification: Dfc — Cold, no dry season, cold summer.

Tromsø has a mean annual temperature of 3.2 °C and receives 1240 mm of precipitation per year (1991–2020 climate normals). The warmest month is July with a mean temperature of 13.2 °C, while February is the coldest month at -4.8 °C. Most precipitation falls in October (148 mm); the driest month is May (63 mm).

Climate Diagram

Climate diagram for Tromsø: monthly mean temperature (red line, left axis, °C) and monthly precipitation (blue bars, right axis, mm), 1991–2020 0 0 10 20 20 40 30 60 40 80 50 100 60 120 70 140 80 160 °C mm J F M A M J J A S O N D

Walter–Lieth diagram: blue bars show monthly precipitation (right axis, mm), the red line shows monthly mean temperature (left axis, °C). Scale: 1 °C ≡ 2 mm.

Climate Table

MonthMean temperature (°C)Precipitation (mm)
January-4.6125.9
February-4.8105.6
March-2.4105.9
April1.577.7
May6.062.9
June10.165.8
July13.283.6
August12.398.9
September8.5124.6
October3.1147.8
November-0.8112.1
December-3.1129.0
Year3.21239.6

Live Forecast

Looking for the current weather instead of climate averages? Open the live forecast diagrams in WZ Diagrams — 15 weather models, ensemble spread, radar and more.

Data Source

Climate normals and Köppen-Geiger classification: Beck et al. (2023), Scientific Data 10, 724, CC BY 4.0. Period 1991–2020. Classification resolution ≈ 1 km; monthly climate data resolution ≈ 1 km (0.01°, Original 2023 release; predates the January 2026 correction), sampled at the grid cell containing the city coordinates (69.65°, 18.96°). Climate normals describe the long-term average, not current weather.