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
May
Weather in May
Temperature
The shift from April to May brings an increase in the average high-temperature, moving from a frosty 6.3°C (43.3°F) to a moderate 13.1°C (55.6°F). Harjavalta's temperature tends to fall to an average low of 6.1°C (43°F) during the nights of May.Humidity
The least humid month in Harjavalta, Finland, is May, with an average relative humidity of 69%.Rainfall
In May, in Harjavalta, Finland, the rain falls for 13.9 days. Throughout May, 34mm (1.34") of precipitation is accumulated. In Harjavalta, during the entire year, the rain falls for 154.3 days and collects up to 508mm (20") of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Harjavalta aggregates 9mm (0.35") of snow. Throughout the year, there are 82.2 snowfall days, and 699mm (27.52") of snow is accumulated.Daylight
In May, the average length of the day in Harjavalta is 17h and 32min.On the first day of May, sunrise is at 05:19 and sunset at 21:36. On the last day of the month, sunrise is at 04:07 and sunset at 22:51 EEST.
Sunshine
The average sunshine in May is 10.2h.UV index
The average daily maximum UV index in May in Harjavalta is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in May translates into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Harjavalta?
What is the least humid month in Harjavalta?
What is the average humidity in May in Harjavalta?
How much does it rain in Harjavalta in May?
What is the last month it snows in Harjavalta?
What is the average length of the day in May in Harjavalta?
When is the sunrise / sunset in May in Harjavalta?
How long on average sun shines in May in Harjavalta?
What is the UV index intensity in May in Harjavalta?
Average temperature in May
Harjavalta, Finland
- Average high temperature in May: 13.1°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in May: 6.1°C
The month with the highest average low temperature is July (13.4°C).
The coldest month (with the lowest average low temperature) is January (-6°C).
Average pressure in May
Harjavalta, Finland
- Average pressure in May: 1014.7mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).
Average wind speed in May
Harjavalta, Finland
- Average wind speed in May: 12.9km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in May
Harjavalta, Finland
- Average humidity in May: 69%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in May
Harjavalta, Finland
- Average rainfall in May: 34mm
The wettest month (with the highest rainfall) is July (63mm).
The driest months (with the least rainfall) are March and April (31mm).
Average rainfall days in May
Harjavalta, Finland
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Harjavalta, Finland
- Average snowfall in May: 9mm
The month with the highest snowfall is February (163mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Harjavalta, Finland
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Harjavalta, Finland
- Average daylight in May: 17h and 3min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in May
Harjavalta, Finland
- Average sunshine days in May: 14.2 days
The month with the most sunshine days is May (14.2 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in May
Harjavalta, 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 and December (UV index 1).
Average cloud cover in May
Harjavalta, Finland
- Average cloud cover in May: 42
The months with the most cloud cover are January, February and December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in May
Harjavalta, Finland
- Average visibility in May: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (7km).
