SeasonMapTromsø (Tromso) weather by month
Norway
The best time to visit Tromsø (Tromso) is June to August — 89/100 in July, 17°C and 10 rainy days. The best season is summer, June to August (84/100 on average).
The worst month is January at 24/100 — freezing, rainy, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Norway →
Tromsø, month by month
Comfort score out of 100 for the kind of trip Tromsø is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 24 | F | -1°C | 17 d | 0 h | Peak | 5 |
| FebFebruary | 33 | F | 0°C | 15 d | 2 h | Peak | 3 |
| MarMarch | 42 | F | 1°C | 19 d | 6 h | Busy | 1 |
| AprApril | 58 | D | 4°C | 15 d | 9 h | Busy | 1 |
| MayMay | 74 | B | 9°C | 13 d | 11 h | Shoulder | — |
| JunJune | 83 | A | 13°C | 11 d | 11 h | Peak | 1 |
| JulJuly | 89 | A | 17°C | 10 d | 11 h | Busy | 1 |
| AugAugust | 80 | A | 15°C | 14 d | 9 h | Busy | — |
| SepSeptember | 70 | B | 12°C | 14 d | 6 h | Busy | 1 |
| OctOctober | 52 | D | 6°C | 15 d | 3 h | Busy | 1 |
| NovNovember | 36 | F | 2°C | 16 d | 1 h | Shoulder | 2 |
| DecDecember | 28 | F | 0°C | 16 d | 0 h | Busy | 2 |
What's on in Tromsø through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
- January
- Tromso International Film Festival12–20 Jan (usually)Festival
- The sun comes back20–23 JanFestival
- Nordlysfestivalen24 Jan – 5 Feb (usually)Festival
- February
- Sami Week1–8 FebFestival
- June
- Midnight Sun Marathon20 JunFestival
- July
- Bukta festival15–26 Jul (usually)Festival
- September
- Aurora season15 Sep – 5 Apr (usually)Nature
- November
- Orca and humpback in the fjords1 Nov – 20 Jan (usually)Nature
Crowds in Tromsø in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Norway, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Good to know before you go to Tromsø
Real experiences from travellers' own write-ups, quoted with a link to the original.
Visas & entry
A traveler describes her first aurora hunt near Tromsø running into dense cloud cover for most of the night, with only brief 15-minute windows of visibility opening up between clouds - pretty, she writes, but not the wildly dramatic display she'd built up in her head from photos. She's direct that this is genuinely typical rather than bad luck: seeing the aurora depends on solar activity actually producing the lights, plus a clear, dark, low-moisture sky, a combination that's notoriously unpredictable through a Norwegian winter, and guides can chase clear patches but can't guarantee conditions. Other travelers who booked multiple consecutive nights describe guides successfully relocating the group to a clear-sky spot despite forecasted clouds, seeing strong displays on both attempts - a pattern that comes up often enough that experienced tour operators specifically recommend booking at least two or three nights rather than one. Posters generally rate a single-night aurora tour as a genuine gamble, with multi-night bookings the practical way to meaningfully improve real odds of a strong showing.