Weather in Tromso - 14-day forecast

Detailed weather forecast for Tromso, Norway: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Tromso

today☁️ 10°💧 2.7 mm

Sun☁️ 8°💧 0.2 mm

Mon☁️ 10°💧 0.3 mm

Tue🌧️ 10°💧 0.8 mm

Wed🌧️ 10°💧 0.1 mm

Thu☁️ 12°💧 8.1 mm

Fri🌧️ 10°💧 0.2 mm

Sat☁️ 11°💧 13.6 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Sunday 6 Sept in Tromso, the forecast high is 8°C. Typical daytime temperatures at this time of year range from 8°C to 15°C, so it will be cooler than usual. It is cooler than 79% of similar days.

Saturday 5 Sept

10°Cnear normal

usually 8°C–15°C

night: near normal rain: typical rainfall wind: lighter than usual

Sunday 6 Sept

8°Ccooler than usual

usually 8°C–15°C

cooler than 79% of similar days

night: near normal rain: less rain than usual wind: typical

Monday 7 Sept

10°Cnear normal

usually 8°C–14°C

night: exceptionally warm rain: less rain than usual wind: typical

Tuesday 8 Sept

10°Cnear normal

usually 8°C–14°C

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Wednesday 9 Sept

10°Cnear normal

usually 8°C–14°C

night: exceptionally warm rain: less rain than usual wind: typical

Thursday 10 Sept

12°Cnear normal

usually 8°C–14°C

night: exceptionally warm rain: more rain than usual wind: typical

Friday 11 Sept

10°Cnear normal

usually 7°C–13°C

night: exceptionally warm rain: less rain than usual wind: exceptionally light

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 11°C by day. The coolest year was 1982 (7°C) and the warmest was 2025 (16°C). The current forecast averages 10°C - lower than in 62% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Tromso

No active weather warnings for Tromso (region: Troms). The national weather service is not forecasting dangerous conditions.

14-day forecast - Tromso

Tromso - 14-day weather forecast infographic

Tromso 30 & 45-day weather - long-range outlook

Next 16 days · forecast

8°

around 6° at night · days with rain: 11

Weeks 3-4 · avg for September

11°

around 6° at night · rain chance 64%

Weeks 5-7 · avg for October

6°

around 1° at night · rain chance 67%

The 30 & 45-day outlook for Tromso: the next 16 days are a numerical forecast updated daily - on average 8° by day and 6° at night. Further out we rely on multi-year climate averages: around 11° in September, and about 6° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Tromso

Saturday5 September 2026

☁️10°overcast clouds

sunrise 05:16 · sunset 20:08 · night 5° · evening 9° · rain 2.67 mm · humidity 72% · wind 2 m/s · clouds 100%

Sunday6 September 2026

☁️8°broken clouds

sunrise 05:20 · sunset 20:03 · night 5° · evening 8° · rain 0.17 mm · humidity 54% · wind 3 m/s · clouds 52%

Monday7 September 2026

☁️10°overcast clouds

sunrise 05:24 · sunset 19:58 · night 9° · evening 10° · rain 0.28 mm · humidity 58% · wind 3 m/s · clouds 100%

Tuesday8 September 2026

🌧️10°light rain

sunrise 05:28 · sunset 19:54 · night 9° · evening 10° · rain 0.81 mm · humidity 76% · wind 4 m/s · clouds 100%

Wednesday9 September 2026

🌧️10°light rain

sunrise 05:32 · sunset 19:49 · night 9° · evening 13° · rain 0.14 mm · humidity 85% · wind 3 m/s · clouds 100%

Thursday10 September 2026

☁️12°broken clouds

sunrise 05:36 · sunset 19:44 · night 10° · evening 12° · rain 8.13 mm · humidity 72% · wind 3 m/s · clouds 64%

Friday11 September 2026

🌧️10°light rain

sunrise 05:40 · sunset 19:40 · night 9° · evening 10° · rain 0.24 mm · humidity 87% · wind 2 m/s · clouds 100%

Saturday12 September 2026

☁️11°broken clouds

sunrise 05:44 · sunset 19:35 · night 7° · evening 11° · rain 13.59 mm · humidity 68% · wind 2 m/s · clouds 56%

Sunday13 September 2026

🌧️10°moderate rain

sunrise 05:48 · sunset 19:31 · night 5° · evening 5° · rain 12.42 mm · humidity 76% · wind 7 m/s · clouds 100%

Monday14 September 2026

🌨️4°rain and snow

sunrise 05:52 · sunset 19:26 · night 2° · evening 3° · rain 33.51 mm · humidity 96% · wind 6 m/s · clouds 100%

Tuesday15 September 2026

🌨️2°rain and snow

sunrise 05:56 · sunset 19:21 · night 4° · evening 3° · rain 23.67 mm · humidity 99% · wind 7 m/s · clouds 100%

Wednesday16 September 2026

☁️3°overcast clouds

sunrise 05:59 · sunset 19:17 · night 0° · evening 2° · rain 4.26 mm · humidity 95% · wind 4 m/s · clouds 100%

Thursday17 September 2026

🌤️4°a few clouds

sunrise 06:03 · sunset 19:12 · night 4° · evening 3° · rain 3.96 mm · humidity 88% · wind 5 m/s · clouds 11%

Friday18 September 2026

🌧️5°light rain

sunrise 06:07 · sunset 19:08 · night 6° · evening 6° · rain 4.77 mm · humidity 97% · wind 6 m/s · clouds 100%

Saturday19 September 2026

🌧️8°light rain

sunrise 06:11 · sunset 19:03 · night 8° · evening 7° · rain 1.11 mm · humidity 89% · wind 7 m/s · clouds 100%

Sunday20 September 2026

🌧️10°light rain

sunrise 06:15 · sunset 18:58 · night 9° · evening 10° · rain 6.19 mm · humidity 89% · wind 15 m/s · clouds 98%

UV index in Tromso - is it safe to sunbathe?

Today the UV index in Tromso is 2 (low). You can safely stay outside. Sunscreen only matters for very long exposure.

Tromso weather through the year

Warmest, driest months on average: May, June, July, August.

Upcoming public holidays in Norway: Christmas Day — 25 December · St. Stephen's Day — 26 December · New Year's Day — 1 January.

Nearby and related places

BodoRovaniemiOuluUmeåBergenSkienSarpsborgHaldenOslo

FAQ - Tromso weather

What is the weather like in Tromso today?

Today it is about 10° during the day and 5° at night, overcast clouds.

How far ahead can I check the forecast for Tromso?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.