Weather in Sundsvall in May 2025
- May is usually the driest month of the year in Sundsvall
Average weather
Average temperature in Sundsvall in May
The expected average maximum temperature in May is +15°C with a maximum of +21°C and a minimum of -3°C.
The average maximum temperature goes up 29% by the end of the month, compared with the beginning of the month, from +8°C to +15°C.
Is Sundsvall warm or cold in May?
Sundsvall is typically mild in May.
Maximum temperatures go up compared to the previous month from +7°C to +13°C. The minimum temperature also goes up from -1°C to +4°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Sundsvall:
Climate in Sundsvall in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +7°C | +13°C | +18°C | ||||
| Min. temperature | ||||||
| -13°C | -7°C | 0°C | ||||
| Max. temperature | ||||||
| +22°C | +28°C | +31°C | ||||
| Rainfall | ||||||
| 19 mm | 40 mm | 57 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 73% | 68% | 68% | ||||
| Air pressure | ||||||
| 1012 HPa | 1013 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 6 | 6 | 5 | ||||
| Cloudy days | ||||||
| 10 | 9 | 8 | ||||
| Rainy days | ||||||
| 7 | 15 | 16 | ||||
| Snowy days | ||||||
| 7 | 1 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +7°C to +13°C during the day. Prepare for more rain. Average rainfall goes from 19 mm to 40 mm. It feels drier, as humidity decreases from 73% to 68%. The average wind speed doesn’t change much during May, staying around 2 m/s. The amount of sunny days stay about the same, averaging 6 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Sundsvall is gradually increasing during May, going from 3 m/s to 8 m/s over the course of the month.
Rain
Snow
Here’s how May is compared with other months in the amount of snow, total mm:
How was the weather last May in Sundsvall?
Climate Change over Years
The climate in Sundsvall in May has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+6°C) and the highest in 2020 (+10°C). The driest year was 1997 with only 281 mm of rainfall, and the wettest year was 2000 with 645 mm.
FAQ
Is May a good time to visit Sundsvall?
Can you sunbathe in Sundsvall in May?
Is Sundsvall rainy in May?
Is it sunny in Sundsvall in May?
Other cities in Sweden
Monthly weather in Sundsvall
Source of the data
For this page, we’ve looked at the typical weather in Sundsvall, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.