Weather radar Tromsø
Real-time precipitation radar · Troms · Norway
Tromsø climate table – average temperature, precipitation & sunshine hours
The climate table for Tromsø shows long-term monthly averages (2000–2023): average high and average low temperature in °C, monthly precipitation (mm), rainy days and sunshine hours per month. Data source: ERA5 reanalysis (ECMWF) via the WDTEC Climate Archive.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | -1.6° | -0.2° | 1.6° | 3.7° | 9.4° | 14.9° | 17.7° | 17.2° | 12.9° | 6.4° | 1° | -2.2° |
| Avg low (°C) | -6.5° | -4.7° | -3.2° | -1.3° | 4.1° | 9.3° | 11.8° | 11.7° | 8.1° | 2.6° | -3° | -7.2° |
| Precipitation (mm) | 151 | 129 | 126 | 106 | 105 | 94 | 100 | 134 | 118 | 130 | 99 | 92 |
| Rainy days | 17 | 17 | 19 | 19 | 19 | 18 | 14 | 18 | 17 | 20 | 16 | 14 |
| Sunshine hours | 4 | 53 | 168 | 273 | 317 | 351 | 353 | 267 | 172 | 88 | 13 | 0 |
| Humidity | 78% | 78% | 78% | 76% | 73% | 75% | 79% | 79% | 80% | 82% | 81% | 79% |
Best time to visit Tromsø
The best time to visit Tromsø is typically July. In this month the average high is 17.7°C, precipitation is 100 mm and sunshine duration is 353 hours. The annual average high is 6.7°C, total annual precipitation is 1384 mm (208 rainy days/year) and annual sunshine is 2059 hours.
Frequently asked questions about the weather in Tromsø
How up to date is the weather radar for Tromsø?
The weather radar for Tromsø is updated every 5 minutes with new radar data from the OPERA composite radar. A 2-hour forecast animation is also available. Rainfall probability, wind gusts and UV index are available up to 14 days in advance.
What weather data is available for Tromsø?
Besides the rain radar, RadarWeather provides for Tromsø: rainfall probability, thunderstorm warning (CAPE index), wind gusts, UV index, air pressure, humidity, dew point, sunshine hours, snow line and a 14-day forecast based on ICON-D2, ECMWF IFS and GFS.
When are thunderstorms expected in Tromsø?
The thunderstorm potential for Tromsø is calculated from the CAPE index and lightning potential. Active storm cells and severe weather warnings are visible on the radar map in real time. Thunderstorm warnings are issued automatically as soon as storm cells are detected near Tromsø.
What is the climate like in Tromsø?
Tromsø has an annual average high of 6.7°C. The warmest month is July (avg high 17.7°C), the coldest December (avg low -7.2°C). The wettest month is January with 151 mm, the driest December with 92 mm. Total annual precipitation is 1384 mm (208 rainy days). Annual sunshine is 2059 hours.