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 is marked by a slight increase in the average high-temperature, moving from a wintry 3.9°C (39°F) to a frosty 8.5°C (47.3°F). Nighttime temperatures during May report a consistent average of 6.3°C (43.3°F).Humidity
In Karlby, the average relative humidity in May is 81%.Rainfall
In May, the rain falls for 9.7 days. Throughout May, 20mm (0.79") of precipitation is accumulated. Throughout the year, in Karlby, there are 132.5 rainfall days, and 310mm (12.2") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.6 snowfall days, in May, Karlby aggregates 8mm (0.31") of snow. In Karlby, during the entire year, snow falls for 38.5 days and aggregates up to 160mm (6.3") of snow.Daylight
In Karlby, the average length of the day in May is 17h and 10min.On the first day of May, sunrise is at 05:32 and sunset at 21:34. On the last day of the month, sunrise is at 04:26 and sunset at 22:41 EEST.
Sunshine
In May, the average sunshine is 10.6h.UV index
In Karlby, the average daily maximum UV index in May is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, a daily UV index of 3 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Karlby in May?
What is the average humidity in May?
How many days does it rain in May in Karlby?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May in Karlby?
How high is the UV index in May?
Average temperature in May
Karlby, Finland
- Average high temperature in May: 8.5°C
The warmest month (with the highest average high temperature) is August (18.1°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in May: 6.3°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (-1.7°C).
Average pressure in May
Karlby, Finland
- Average pressure in May: 1015mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in May
Karlby, Finland
- Average wind speed in May: 21.3km/h
The windiest month (with the highest average wind speed) is December (34.1km/h).
The calmest month (with the lowest average wind speed) is July (21.2km/h).
Average humidity in May
Karlby, Finland
- Average humidity in May: 81%
The months with the highest relative humidity are February and March (84%).
The months with the lowest relative humidity are August, September and October (78%).
Average rainfall in May
Karlby, Finland
- Average rainfall in May: 20mm
The wettest month (with the highest rainfall) is September (38mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in May
Karlby, Finland
- Average rainfall days in May: 9.7 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Karlby, Finland
- Average snowfall in May: 8mm
The month with the highest snowfall is January (41mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Karlby, Finland
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Karlby, Finland
- Average daylight in May: 17h and 1min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in May
Karlby, Finland
- Average sunshine days in May: 19.3 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is December (8.9 days).
Average UV index in May
Karlby, 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, March and December (UV index 1).
Average cloud cover in May
Karlby, Finland
- Average cloud cover in May: 36
The months with the most cloud cover are January and December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in May
Karlby, 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).
