May weather forecast
Tvärminne, Finland

May

Weather in May

May, the last month of the spring in Tvärminne, is a frosty month, with temperature in the range of an average low of 6.8°C (44.2°F) and an average high of 9.7°C (49.5°F).

Temperature

Tvärminne's transition into May brings a rise in the average high-temperature, moving from a cold 4.3°C (39.7°F) in April to a chilly 9.7°C (49.5°F). The nighttime temperature in Tvärminne in May experiences a minor dip, averaging a still frosty 6.8°C (44.2°F).

Humidity

In Tvärminne, the average relative humidity in May is 78%.

Rainfall

In May, in Tvärminne, the rain falls for 10.5 days. Throughout May, 21mm (0.83") of precipitation is accumulated. In Tvärminne, during the entire year, the rain falls for 146.1 days and collects up to 353mm (13.9") of precipitation.

Snowfall

January through May, October through December are months with snowfall in Tvärminne, Finland. May is the last month it regularly snows in Tvärminne, Finland. During 0.5 snowfall days, in May, Tvärminne aggregates 4mm (0.16") of snow. In Tvärminne, during the entire year, snow falls for 47.4 days and aggregates up to 181mm (7.13") of snow.

Daylight

In May, the average length of the day is 17h and 9min.
On the first day of May, sunrise is at 05:23 and sunset at 21:24. On the last day of the month, sunrise is at 04:18 and sunset at 22:31 EEST.

Sunshine

In Tvärminne, Finland, the average sunshine in May is 10.6h.

UV index

The average daily maximum UV index in May in Tvärminne, Finland, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 during May leads to these advisories:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take note! UV radiation from the Sun can double in intensity due to snow reflection.

Frequently asked questions

What is the usual temperature for Tvärminne in May?
The high-temperature, in May, in Tvärminne, records 9.7°C (49.5°F), while the low-temperature is 6.8°C (44.2°F).
What is the average humidity in May in Tvärminne?
In Tvärminne, Finland, the average relative humidity in May is 78%.
How much does it rain in Tvärminne in May?
In Tvärminne, Finland, during May, the rain falls for 10.5 days and regularly aggregates up to 21mm (0.83") of precipitation.
What is the last month it snows in Tvärminne?
May is the last month it regularly snows in Tvärminne, Finland. During 0.5 snowfall days, in May, Tvärminne aggregates 4mm (0.16") of snow.
How many hours of daylight does Tvärminne have in May?
In May, the average day length in Tvärminne, Finland, is 17h and 9min.
What time are sunrise and sunset in May in Tvärminne?
In May, on the first day of the month, sunrise is at 05:23 and sunset at 21:24. On the last day of the month, sunrise is at 04:18 and sunset at 22:31 EEST.
How many hours of sunshine does Tvärminne have in May?
In May, the average sunshine duration is 10.6h.
What is the UV index intensity in May in Tvärminne?
In Tvärminne, Finland, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May
Tvärminne, Finland
  • Average high temperature in May: 9.7°C

The warmest month (with the highest average high temperature) is August (18.3°C).
The month with the lowest average high temperature is February (-0.4°C).

  • Average low temperature in May: 6.8°C

The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (-3.2°C).

Average pressure in May
Tvärminne, Finland
  • Average pressure in May: 1015mbar

The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1008.2mbar).

Average wind speed in May
Tvärminne, Finland
  • Average wind speed in May: 18.8km/h

The windiest month (with the highest average wind speed) is December (31.4km/h).
The calmest month (with the lowest average wind speed) is May (18.8km/h).

Average humidity in May
Tvärminne, Finland
  • Average humidity in May: 78%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (76%).

Average rainfall in May
Tvärminne, Finland
  • Average rainfall in May: 21mm

The wettest month (with the highest rainfall) is August (46mm).
The driest month (with the least rainfall) is April (13mm).

Average rainfall days in May
Tvärminne, Finland
  • Average rainfall days in May: 10.5 days

The month with the highest number of rainy days is August (16.7 days).
The month with the least rainy days is February (6.5 days).

Average snowfall in May
Tvärminne, Finland
  • Average snowfall in May: 4mm

The month with the highest snowfall is December (48mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May
Tvärminne, Finland
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Tvärminne, Finland
  • Average daylight in May: 17h and 1min

The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).

Average sunshine days in May
Tvärminne, Finland
  • Average sunshine days in May: 18.1 days

The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is December (7.2 days).

Average UV index in May
Tvärminne, Finland
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).

Average cloud cover in May
Tvärminne, Finland
  • Average cloud cover in May: 36

The month with the most cloud cover is December (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in May
Tvärminne, Finland
  • Average visibility in May: 10km

The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).

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