May weather forecastSeinäjoki, Finland
May
Weather in May
May unveils the Finnish summer in Seinäjoki, characterized by pleasantly high temperatures and prolonged sunshine. Rainfall gets frequent with an average monthly downpour of 41mm (1.61"). As the days unfold, boisterous winds make their way out, resulting in warm, tranquil evenings. An appreciable surge in UV index enforces the need for sun protection. Clear skies signal better visibility, an invite for outdoor activities.Temperature
Seinäjoki sees a considerable increase in average high-temperatures during May, surging from a chilly 6.5°C (43.7°F) in April to a refreshing 14.5°C (58.1°F). During May, Seinäjoki's temperature averages to an icy 5.1°C (41.2°F) at night.Humidity
The months with the lowest humidity are May and June, with an average relative humidity of 67%.Rainfall
In Seinäjoki, in May, during 14.2 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Seinäjoki, during the entire year, the rain falls for 134.7 days and collects up to 432mm (17.01") of precipitation.Snowfall
January through May, October through December are months with snowfall in Seinäjoki. May is the last month it regularly snows. During 1 snowfall days, in May, Seinäjoki aggregates 22mm (0.87") of snow. In Seinäjoki, Finland, during the entire year, snow falls for 79 days and aggregates up to 691mm (27.2") of snow.Daylight
The average length of the day in May is 18h and 0min.On the first day of May in Seinäjoki, Finland, sunrise is at 05:07 and sunset at 21:43. On the last day of the month, sunrise is at 03:45 and sunset at 23:07 EEST.
Sunshine
In May, the average sunshine in Seinäjoki, Finland, is 9.9h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 4 in May translates into the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Seinäjoki, Finland
- Average high temperature in May: 14.5°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (-4.5°C).
- Average low temperature in May: 5.1°C
The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in May
Seinäjoki, Finland
- Average pressure in May: 1014.3mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1006mbar).
Average wind speed in May
Seinäjoki, Finland
- Average wind speed in May: 10.9km/h
The windiest month (with the highest average wind speed) is December (12.1km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity in May
Seinäjoki, Finland
- Average humidity in May: 67%
The months with the highest relative humidity are January and February (94%).
The months with the lowest relative humidity are May and June (67%).
Average rainfall in May
Seinäjoki, Finland
- Average rainfall in May: 41mm
The wettest month (with the highest rainfall) is August (62mm).
The driest month (with the least rainfall) is February (20mm).
Average rainfall days in May
Seinäjoki, Finland
- Average rainfall days in May: 14.2 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in May
Seinäjoki, Finland
- Average snowfall in May: 22mm
The month with the highest snowfall is December (145mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Seinäjoki, Finland
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is December (16.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Seinäjoki, Finland
- Average daylight in May: 18h and 0min
The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- Average sunshine in May: 9h and 54min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 1h and 6min).
Average sunshine days in May
Seinäjoki, Finland
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is February (15 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in May
Seinäjoki, Finland
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in May
Seinäjoki, Finland
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is June (Cloud cover 43).
Average visibility in May
Seinäjoki, Finland
- Average visibility in May: 9km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January, February and March (6km).





