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Best time to visit · Norway
For the most comfortable weather in Tromsø, aim for July & August. July tops our comfort score at 73/100, with highs around 63°F (17°C) and 4.4 in (112 mm) of rain. June is a good shoulder-season month. The toughest months are March and November & December, mainly because of cool days.
Highs run from 25°F to 63°F across the year, and the yearly total is about 53.0 in (1347 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 25°F-4°C | 26°F-4°C | 30°F-1°C | 37°F3°C | 47°F9°C | 56°F13°C | 63°F17°C | 60°F16°C | 52°F11°C | 40°F4°C | 32°F0°C | 28°F-2°C |
| Avg low | 15°F-9°C | 16°F-9°C | 20°F-7°C | 27°F-3°C | 37°F3°C | 44°F7°C | 51°F10°C | 49°F9°C | 42°F6°C | 33°F0°C | 25°F-4°C | 20°F-7°C |
| Rain/snow | 4.2 in106 mm | 4.3 in109 mm | 4.7 in120 mm | 3.5 in89 mm | 3.7 in95 mm | 4.2 in106 mm | 4.4 in112 mm | 4.4 in113 mm | 5.4 in137 mm | 4.8 in122 mm | 4.5 in114 mm | 4.9 in124 mm |
| Humidity | 96% | 95% | 93% | 92% | 85% | 81% | 81% | 85% | 90% | 95% | 96% | 96% |
| Cloud | 83% | 83% | 85% | 81% | 80% | 81% | 79% | 79% | 82% | 83% | 84% | 85% |
| Comfort | 34 | 34 | 32 | 37 | 49 | 61 | 73 | 68 | 50 | 33 | 33 | 32 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~231 m (758 ft) to Tromsø's ~18 m (59 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 25–28°F (-4–-2°C) and lows down to 15°F (-9°C). About 13.3 in (339 mm) of rain or snow falls across these months, 25% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December), averaging 33/100.
Temperatures climb through the season, from 30°F highs in March to 47°F by May. It's the driest season, with only about 12.0 in (304 mm) of rain or snow, 23% of the year's total. March & April are cold enough for snow. Comfort scores bottom out in March; the season averages 39/100.
Peak warmth: highs of 56–63°F (13–17°C). About 13.0 in (331 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 44°F (7°C). Comfort peaks here: July & August rank with the year's best, and the season averages 67/100.
Temperatures slide from 52°F highs in September to 32°F by November. It's the wettest season, with about 14.7 in (373 mm) of rain or snow, 28% of the year's total. November is cold enough for snow. Comfort scores bottom out in November; the season averages 39/100.
By comfort score: 3 Good, 2 Fair and 7 Tough. Tap a month for its own guide.
For the most comfortable weather in Tromsø, aim for July & August. July tops our comfort score at 73/100, with highs around 63°F (17°C) and 4.4 in (112 mm) of rain. June is a good shoulder-season month. The toughest months are March and November & December, mainly because of cool days.
September is the wettest month, averaging about 5.4 in (137 mm) of rain. April is the driest, with about 3.5 in (89 mm). The yearly total is around 53.0 in (1347 mm).
January is the coldest, with average lows of 15°F (-9°C) and highs of 25°F (-4°C). The warmest is July, with average highs of 63°F (17°C).
Not very: summer (June – August) humidity averages 82%, and highs peak around 63°F (17°C), so it rarely feels sticky.
On average, yes: lows fall below 32°F (0°C) in November – April, bottoming out around 15°F (-9°C) in January.
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