Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May signals a shift in the average high-temperature, moving from April's frosty 6.8°C (44.2°F) to a moderate 13.2°C (55.8°F). An average low-temperature of 6.7°C (44.1°F) is recorded during the nights in May in Illoinen.Humidity
May is the least humid month, with an average relative humidity of 71%.Rainfall
In Illoinen, in May, it is raining for 12 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, there are 134.6 rainfall days, and 394mm (15.51") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Illoinen. May is the last month it regularly snows in Illoinen. During 0.8 snowfall days, in May, Illoinen aggregates 13mm (0.51") of snow. In Illoinen, Finland, during the entire year, snow falls for 60.5 days and aggregates up to 454mm (17.87") of snow.Daylight
In May, the average length of the day in Illoinen is 17h and 18min.On the first day of May in Illoinen, sunrise is at 05:24 and sunset at 21:31. On the last day of the month, sunrise is at 04:16 and sunset at 22:41 EEST.
Sunshine
In May, the average sunshine in Illoinen is 10.2h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 4 in May translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Illoinen in May?
What is the least humid month in Illoinen?
What is the average humidity in May in Illoinen?
How much does it rain in Illoinen in May?
What is the last month it snows in Illoinen?
How many hours of daylight does Illoinen have in May?
What time are sunrise and sunset in May in Illoinen?
How long on average sun shines in May in Illoinen?
What is the UV index reading in May in Illoinen?
Average temperature in May
Illoinen, Finland
- Average high temperature in May: 13.2°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-1.9°C).
- Average low temperature in May: 6.7°C
The months with the highest average low temperature are July and August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-5.6°C).
Average pressure in May
Illoinen, Finland
- Average pressure in May: 1014.9mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in May
Illoinen, Finland
- Average wind speed in May: 14.4km/h
The windiest month (with the highest average wind speed) is December (20.4km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in May
Illoinen, Finland
- Average humidity in May: 71%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in May
Illoinen, Finland
- Average rainfall in May: 27mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in May
Illoinen, Finland
- Average rainfall days in May: 12 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Illoinen, Finland
- Average snowfall in May: 13mm
The month with the highest snowfall is January (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Illoinen, Finland
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Illoinen, Finland
- Average daylight in May: 17h and 2min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).
Average sunshine days in May
Illoinen, Finland
- Average sunshine days in May: 17.2 days
The month with the most sunshine days is May (17.2 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in May
Illoinen, 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, November and December (UV index 1).
Average cloud cover in May
Illoinen, Finland
- Average cloud cover in May: 40
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in May
Illoinen, Finland
- Average visibility in May: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are February and March (8km).
Illoinen, Finland
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