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
Ruonala sees an increase in the average high-temperature with the arrival of May, moving from April's icy 4.8°C (40.6°F) to a fresh 11.5°C (52.7°F). Ruonala marks an average drop to a chilly 7.1°C (44.8°F) during nighttime in May, following the high of the day.Humidity
With an average relative humidity of 73%, May is the least humid month.Rainfall
In May, the rain falls for 13.3 days. Throughout May, 39mm (1.54") of precipitation is accumulated. In Ruonala, during the entire year, the rain falls for 158.3 days and collects up to 571mm (22.48") of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1 snowfall days, in May, Ruonala aggregates 13mm (0.51") of snow. Throughout the year, there are 85.1 snowfall days, and 670mm (26.38") of snow is accumulated.Daylight
In Ruonala, the average length of the day in May is 17h and 19min.On the first day of May, sunrise is at 05:05 and sunset at 21:13. On the last day of the month, sunrise is at 03:57 and sunset at 22:23 EEST.
Sunshine
The average sunshine in May is 9.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 4 in May leads to these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the least humid month?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Ruonala have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Ruonala have in May?
What is the UV index intensity in May?
Average temperature in May
Ruonala, Finland
- Average high temperature in May: 11.5°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is February (-2.7°C).
- Average low temperature in May: 7.1°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (-6.3°C).
Average pressure in May
Ruonala, 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 (1008.9mbar).
Average wind speed in May
Ruonala, Finland
- Average wind speed in May: 15.6km/h
The windiest month (with the highest average wind speed) is December (23.7km/h).
The calmest month (with the lowest average wind speed) is July (15.5km/h).
Average humidity in May
Ruonala, Finland
- Average humidity in May: 73%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (73%).
Average rainfall in May
Ruonala, Finland
- Average rainfall in May: 39mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in May
Ruonala, Finland
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is October (17.6 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in May
Ruonala, Finland
- Average snowfall in May: 13mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Ruonala, Finland
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Ruonala, 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: 9h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in May
Ruonala, Finland
- Average sunshine days in May: 15.2 days
The month with the most sunshine days is May (15.2 days).
The month with the least sunshine days is December (6.4 days).
Average UV index in May
Ruonala, 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
Ruonala, Finland
- Average cloud cover in May: 41
The months with the most cloud cover are January and December (Cloud cover 77).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in May
Ruonala, 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 January, February, March and December (8km).
