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
With the onset of May, Björby's average high-temperature experiences a slight rise, moving from April's wintry 4.3°C (39.7°F) to a chilly 8.3°C (46.9°F). With a barely noticeable fluctuation in temperature, Björby reaches an average low of 6.3°C (43.3°F) during the May nights.Humidity
In Björby, the average relative humidity in May is 80%.Rainfall
In May, the rain falls for 9 days. Throughout May, 20mm (0.79") of precipitation is accumulated. Throughout the year, in Björby, there are 116.3 rainfall days, and 274mm (10.79") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Björby. During 0.7 snowfall days, in May, Björby aggregates 6mm (0.24") of snow. Throughout the year, in Björby, there are 40.1 snowfall days, and 160mm (6.3") of snow is accumulated.Daylight
In May, the average length of the day in Björby is 17h and 16min.On the first day of May in Björby, sunrise is at 05:33 and sunset at 21:39. On the last day of the month, sunrise is at 04:26 and sunset at 22:48 EEST.
Sunshine
In Björby, the average sunshine in May is 10.5h.UV index
In May, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 3 during May translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. During bright days, sunglasses that offer UVA and UVB defense are recommended. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Björby?
What is the average humidity in May in Björby?
How much does it rain in Björby in May?
What is the last month it snows in Björby?
How many hours of daylight does Björby have in May?
What time are sunrise and sunset in May in Björby?
How long on average sun shines in May in Björby?
What is the UV index intensity in May in Björby?
Average temperature in May
Björby, Finland
- Average high temperature in May: 8.3°C
The warmest month (with the highest average high temperature) is August (17.6°C).
The month with the lowest average high temperature is February (0.5°C).
- Average low temperature in May: 6.3°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (-1.5°C).
Average pressure in May
Björby, 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 (1007.4mbar).
Average wind speed in May
Björby, Finland
- Average wind speed in May: 20.8km/h
The windiest month (with the highest average wind speed) is December (31.7km/h).
The calmest month (with the lowest average wind speed) is July (20km/h).
Average humidity in May
Björby, Finland
- Average humidity in May: 80%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and October (78%).
Average rainfall in May
Björby, Finland
- Average rainfall in May: 20mm
The wettest month (with the highest rainfall) is October (32mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in May
Björby, Finland
- Average rainfall days in May: 9 days
The month with the highest number of rainy days is August (14.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in May
Björby, Finland
- Average snowfall in May: 6mm
The month with the highest snowfall is January (44mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Björby, Finland
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Björby, Finland
- Average daylight in May: 17h and 2min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in May: 10h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 2h and 12min).
Average sunshine days in May
Björby, Finland
- Average sunshine days in May: 20.5 days
The month with the most sunshine days is May (20.5 days).
The month with the least sunshine days is December (11.1 days).
Average UV index in May
Björby, Finland
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and March (UV index 1).
Average cloud cover in May
Björby, Finland
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in May
Björby, Finland
- Average visibility in May: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
