🇳🇴 Weather in Tromsø in May
This is what the weather in Tromsø (Northern Norway, Norway) was like in May in 2017–2026.
Key facts at a glance
Avg. daytime high
6.1 °C
1.3 °C – 9.5 °C
Avg. night-time low
0.4 °C
-2.1 °C – 2.1 °C
Avg. rain days in period
19.4
63 % of days · ≥ 1.0 mm
Avg. precipitation in period
104 mm
57.7 mm – 174 mm
Avg. cloud cover
79 %
This data source has no sunshine hours – average cloud cover shown instead.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 21.1 °C (30 May 2024) · Lowest temperature -8.5 °C (13 May 2017) · Avg. daily peak wind 14 km/h
Weather mix of all days
- 10Sunny
- 56Partly cloudy
- 50Cloudy
- 117Light rain
- 77Rain
Summary
- On average 6.1 °C during the day and 0.4 °C at night.
- On average 19.4 rain days (Rain day = at least 1.0 mm of precipitation) with 104 mm of precipitation in total.
- Prevailing: Light rain.
- Warmest year: 2018 (avg. 9.5 °C), coolest: 2020 (avg. 1.3 °C).
- Wettest year: 2023 (174 mm), driest: 2021 (57.7 mm).
- Extremes: 21.1 °C on 30 May 2024 and -8.5 °C on 13 May 2017.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Precipitation & rain days
Year by year
2026
Avg. max8.5°Avg. min2.1°- Rain days
- 23 Rain days
- Precipitation
- 103 mm
- Avg. cloud cover
- 74 % cloudy
- Sea temperature
- –
Max 14.9 °C · Min -2.1 °C
2025
Avg. max5.9°Avg. min0.4°- Rain days
- 21 Rain days
- Precipitation
- 70.1 mm
- Avg. cloud cover
- 75 % cloudy
- Sea temperature
- –
Max 14.4 °C · Min -5.7 °C
2024
Avg. max8.7°Avg. min2.0°- Rain days
- 16 Rain days
- Precipitation
- 101 mm
- Avg. cloud cover
- 78 % cloudy
- Sea temperature
- –
Max 21.1 °C · Min -6.1 °C
2023
Avg. max6.5°Avg. min1.6°- Rain days
- 28 Rain days
- Precipitation
- 174 mm
- Avg. cloud cover
- 85 % cloudy
- Sea temperature
- –
Max 15.6 °C · Min -4.2 °C
2022
Avg. max7.0°Avg. min0.8°- Rain days
- 21 Rain days
- Precipitation
- 134 mm
- Avg. cloud cover
- 76 % cloudy
- Sea temperature
- –
Max 17.3 °C · Min -8.0 °C
2021
Avg. max4.8°Avg. min-1.3°- Rain days
- 15 Rain days
- Precipitation
- 57.7 mm
- Avg. cloud cover
- 80 % cloudy
- Sea temperature
- –
Max 12.4 °C · Min -8.4 °C
2020
Avg. max1.3°Avg. min-1.9°- Rain days
- 18 Rain days
- Precipitation
- 114 mm
- Avg. cloud cover
- 81 % cloudy
- Sea temperature
- –
Max 8.8 °C · Min -7.9 °C
2019
Avg. max6.5°Avg. min0.6°- Rain days
- 16 Rain days
- Precipitation
- 105 mm
- Avg. cloud cover
- 77 % cloudy
- Sea temperature
- –
Max 17.2 °C · Min -5.1 °C
2018
Avg. max9.5°Avg. min1.9°- Rain days
- 16 Rain days
- Precipitation
- 82.5 mm
- Avg. cloud cover
- 76 % cloudy
- Sea temperature
- –
Max 18.7 °C · Min -6.3 °C
2017
Avg. max2.7°Avg. min-2.1°- Rain days
- 20 Rain days
- Precipitation
- 101 mm
- Avg. cloud cover
- 84 % cloudy
- Sea temperature
- –
Max 8.5 °C · Min -8.5 °C
Frequently asked questions
- How warm is it in Tromsø in May?
- Daytime highs averaged 6.1 °C, night-time lows 0.4 °C. The highest value of the past 10 years was 21.1 °C (30 May 2024), the lowest -8.5 °C (13 May 2017).
- How often does it rain in Tromsø in May?
- On average there were 19.4 rain days (at least 1 mm) with 104 mm of precipitation in total.
Check your exact travel dates
Choose your travel period – we show the weather for exactly those days.
Other destinations in May
Data sources
- Weather data
- Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains. - Sea temperature
- MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis) - Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)