Weather in Vaasa in May 2025
- May is usually the driest month of the year in Vaasa
Average weather
Average temperature in Vaasa in May
Going from a maximum of +19°C during the day to a minimum of -2°C during the night, the temperature in May averages around +13°C.
The average maximum temperature goes up 33% by the end of the month, compared with the beginning of the month, from +7°C to +14°C.
Is Vaasa warm or cold in May?
Vaasa is typically mild in May.
Maximum temperatures go up compared to the previous month from +6°C to +12°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 Vaasa:
Water temperature in Vaasa in May
Water in Vaasa in May is Cold. It varies from 0°C to +8°C, with an average of +4°C. The air temperature averaging +12°C is higher than the water temperature.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Vaasa in May?
Climate in Vaasa in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +6°C | +12°C | +17°C | ||||
| Min. temperature | ||||||
| -15°C | -5°C | 0°C | ||||
| Max. temperature | ||||||
| +21°C | +28°C | +31°C | ||||
| Rainfall | ||||||
| 23 mm | 48 mm | 62 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +1°C | +4°C | +11°C | ||||
| Humidity | ||||||
| 74% | 68% | 70% | ||||
| Air pressure | ||||||
| 1012 HPa | 1013 HPa | 1010 HPa | ||||
| Sunny days | ||||||
| 7 | 8 | 7 | ||||
| Cloudy days | ||||||
| 11 | 9 | 8 | ||||
| Rainy days | ||||||
| 6 | 13 | 14 | ||||
| Snowy days | ||||||
| 6 | 1 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +6°C to +12°C during the day. Prepare for more rain. Average rainfall goes from 23 mm to 48 mm. It feels drier, as humidity decreases from 74% to 68%. The average wind speed doesn’t change much during May, staying around 3 m/s. The good news is there are likely to be more sunny days in May, from 7 to 8.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Vaasa is gradually increasing during May, going from 4 m/s to 6 m/s over the course of the month.
Rain
How was the weather last May in Vaasa?
Climate Change over Years
The climate in Vaasa in May has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+4°C) and the highest in 2020 (+10°C). The driest year was 2002 with only 260 mm of rainfall, and the wettest year was 2019 with 2226 mm.
FAQ
Is May a good time to visit Vaasa?
Can you sunbathe in Vaasa in May?
Can you swim in Vaasa in May?
Is Vaasa rainy in May?
Is it sunny in Vaasa in May?
Other cities in Finland
Monthly weather in Vaasa
Source of the data
For this page, we’ve looked at the typical weather in Vaasa, 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.