May weather forecast
Vaasa, Finland

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Weather in May

May sees a pleasing incline in warmth, bringing temperatures as high as 13°C (55.4°F). A clear departure from the dwindling cold of April, May is the bookmark between spring and the coming summer. The steady increment in daylight hours, combined with a rise in sea temperatures, is an open invitation for water activities. The weather starts to stabilize with decreased variance between days. As May bids adieu, residents look forward to the much-anticipated Nordic summer with fervent excitement.

Temperature

May's arrival in Vaasa, Finland, signals a distinct temperature shift, escalating from an icy 5°C (41°F) in April to a refreshing 13°C (55.4°F). Throughout May, Vaasa's nights cool down to an average of 4°C (39.2°F).

Rainfall

In Vaasa, in May, it is raining for 11 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, in Vaasa, there are 182 rainfall days, and 493mm (19.41") of precipitation is accumulated.

Sea temperature

In Vaasa, in May, the average water temperature is 3.9°C (39°F).
Note: In the practice of swimming, this situation poses immediate risks to life. Losing control over breathing is immediate, thereby making clear thinking near impossible. A specialized swimsuit is obligatory to restrict thermal loss.

Daylight

In Vaasa, the average length of the day in May is 18h and 6min.
On the first day of the month, sunrise is at 05:10 and sunset at 21:50. On the last day of May, sunrise is at 03:46 and sunset at 23:16 EEST.

Sunshine

In May, the average sunshine in Vaasa is 7h.

UV index

In May, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A typical high UV index of 3 in May suggests the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What are May temperatures in Vaasa?

An average high-temperature, in May, in Vaasa, is 13°C (55.4°F) and the average low-temperature is 4°C (39.2°F).

How much does it rain in Vaasa in May?

In Vaasa, Finland, during May, the rain falls for 11 days and regularly aggregates up to 32mm (1.26") of precipitation.

What is the water temperature in May in Vaasa?

In Vaasa, the average seawater temperature in May is 3.9°C (39°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Vaasa have in May?

In May, the average day length in Vaasa is 18h and 6min.

What time are sunrise and sunset in May in Vaasa?

In May, on the first day of the month, sunrise is at 05:10 and sunset at 21:50. On the last day of the month, in Vaasa, sunrise is at 03:46 and sunset at 23:16 EEST.

How long on average sun shines in May in Vaasa?

In Vaasa, Finland, the average sunshine duration in May is 7h.

What is the UV index intensity in May in Vaasa?

The average daily maximum UV index in May in Vaasa, Finland, is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Vaasa, Finland

Average temperature in May - Vaasa, Finland
  • Average high temperature in May: 13°C

The warmest month (with the highest average high temperature) is July (20°C).
The months with the lowest average high temperature are January and February (-5°C).

  • Average low temperature in May: 4°C

The month with the highest average low temperature is July (11°C).
The coldest months (with the lowest average low temperature) are January and February (-12°C).

Average rainfall in May
Vaasa, Finland

Average rainfall in May - Vaasa, Finland
  • Average rainfall in May: 32mm

The wettest month (with the highest rainfall) is August (62mm).
The driest month (with the least rainfall) is February (23mm).

Average rainfall days in May
Vaasa, Finland

Average rainfall days in May - Vaasa, Finland
  • Average rainfall days in May: 11 days

The month with the highest number of rainy days is January (21 days).
The months with the least rainy days are May and June (11 days).

Average sea temperature in May
Vaasa, Finland

Average sea temperature in May - Vaasa, Finland
  • Average sea temperature in May: 3.9°C

The best month for swimming (with the highest average sea temperature) is August (16.4°C).
The coldest month (with the lowest average sea temperature) is February (-0.3°C).

Average daylight in May /
Average sunshine in May
Vaasa, Finland

Average daylight in May / Average sunshine in May - Vaasa, Finland
  • Average daylight in May: 18h and 1min

The month with the longest days is June (Average daylight: 20h and 6min).
The month with the shortest days is December (Average daylight: 4h and 54min).

  • Average sunshine in May: 7h

The month with the most sunshine is June (Average sunshine: 9h).
The months with the least sunshine are January and December (Average sunshine: 0h).

Average UV index in May
Vaasa, Finland

Average UV index in May - Vaasa, Finland
  • Average UV index in May: 3

The month with the highest UV index is June (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 0).

Vaasa, Finland

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