Sundsvall weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Poor
Best time to visit: June – July
What is the weather like in Sundsvall in May?
In May, Sundsvall is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. The sea averages 5.6 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 39 mm. All in all, May is not an ideal month for a holiday in Sundsvall.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 17 h 42 min03:56 – 21:38
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Stockholm
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %88 %
- Few rainy daysweight 20 %67 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Sundsvall in May: quick answers
Is Sundsvall hot in May?
No. In May, Sundsvall is cool: daytime highs average 13 °C and nights drop to about 5 °C.
Can you swim in Sundsvall in May?
Only if you don't mind cold water: in May the sea averages just 5.6 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Sundsvall in May?
Rain falls on about 9 days, adding up to 39 mm.
Sundsvall month by month
The whole year in SundsvallAll destinations: SwedenWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences