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
As April transitions into May, a change in temperatures is observed, with average highs moving from a frosty 6.9°C (44.4°F) to a mild 14.8°C (58.6°F). An average low-temperature of 5.2°C (41.4°F) is noted during the month of May.Humidity
With an average relative humidity of 67%, May is the least humid month in Isojoki.Rainfall
In Isojoki, in May, during 14.6 rainfall days, 39mm (1.54") of precipitation is typically accumulated. In Isojoki, during the entire year, the rain falls for 144.9 days and collects up to 493mm (19.41") of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1.3 snowfall days, in May, Isojoki aggregates 12mm (0.47") of snow. Throughout the year, there are 102.4 snowfall days, and 1049mm (41.3") of snow is accumulated.Daylight
In Isojoki, the average length of the day in May is 17h and 47min.On the first day of the month, sunrise is at 05:15 and sunset at 21:42. On the last day of May, in Isojoki, sunrise is at 03:58 and sunset at 23:01 EEST.
Sunshine
The average sunshine in May in Isojoki is 9.6h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In May, an average UV index of 4 transforms into the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What are May temperatures in Isojoki?
What is the least humid month in Isojoki?
What is the average humidity in May in Isojoki?
How much does it rain in Isojoki in May?
What is the last month it snows in Isojoki?
How many hours of daylight does Isojoki have in May?
What time are sunrise and sunset in May in Isojoki?
How many hours of sunshine does Isojoki have in May?
What is the UV index reading in May in Isojoki?
Average temperature in May
Isojoki, Finland
- Average high temperature in May: 14.8°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-4.3°C).
- Average low temperature in May: 5.2°C
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure in May
Isojoki, Finland
- Average pressure in May: 1014.6mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).
Average wind speed in May
Isojoki, Finland
- Average wind speed in May: 11.8km/h
The windiest month (with the highest average wind speed) is December (13.1km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity in May
Isojoki, Finland
- Average humidity in May: 67%
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (67%).
Average rainfall in May
Isojoki, Finland
- Average rainfall in May: 39mm
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are April and September (34mm).
Average rainfall days in May
Isojoki, Finland
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in May
Isojoki, Finland
- Average snowfall in May: 12mm
The month with the highest snowfall is December (234mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Isojoki, Finland
- Average snowfall days in May: 1.3 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Isojoki, Finland
- Average daylight in May: 17h and 5min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 1h and 48min).
Average sunshine days in May
Isojoki, Finland
- Average sunshine days in May: 14.4 days
The month with the most sunshine days is May (14.4 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in May
Isojoki, Finland
- Average UV index in May: 4
The months with the highest UV index are June and 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
Isojoki, Finland
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are June and July (Cloud cover 44).
Average visibility in May
Isojoki, Finland
- Average visibility in May: 9km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (6km).
Isojoki, Finland
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