May weather forecastRoknäs, Sweden
May
Weather in May
May, the last month of the spring in Roknäs, is a fresh month, with an average temperature varying between 10.6°C (51.1°F) and 4.3°C (39.7°F).Temperature
May's arrival coincides with a rise in the average high-temperature, moving from April's icy 3.6°C (38.5°F) to a cool 10.6°C (51.1°F). During May, Roknäs consistently records a temperature low averaging a cold 4.3°C (39.7°F).Humidity
In Roknäs, the average relative humidity in May is 70%.Rainfall
In May, the rain falls for 9.3 days. Throughout May, 22mm (0.87") of precipitation is accumulated. In Roknäs, during the entire year, the rain falls for 93.1 days and collects up to 277mm (10.91") of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Roknäs. During 2.3 snowfall days, in May, Roknäs aggregates 20mm (0.79") of snow. Throughout the year, there are 69.7 snowfall days, and 722mm (28.43") of snow is accumulated.Daylight
In Roknäs, the average length of the day in May is 19h and 1min.On the first day of May, sunrise is at 03:55 and sunset at 21:09. On the last day of the month, sunrise is at 02:05 and sunset at 23:00 CEST.
Sunshine
In May, the average sunshine in Roknäs is 11.1h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 during May translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Roknäs, Sweden
- Average high temperature in May: 10.6°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in May: 4.3°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is February (-10.7°C).
Average pressure in May
Roknäs, Sweden
- Average pressure in May: 1014.1mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1004.9mbar).
Average wind speed in May
Roknäs, Sweden
- Average wind speed in May: 11.8km/h
The windiest month (with the highest average wind speed) is December (14.1km/h).
The calmest month (with the lowest average wind speed) is July (11.2km/h).
Average humidity in May
Roknäs, Sweden
- Average humidity in May: 70%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is June (66%).
Average rainfall in May
Roknäs, Sweden
- Average rainfall in May: 22mm
The wettest month (with the highest rainfall) is July (28mm).
The driest month (with the least rainfall) is February (18mm).
Average rainfall days in May
Roknäs, Sweden
- Average rainfall days in May: 9.3 days
The month with the highest number of rainy days is August (11.3 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in May
Roknäs, Sweden
- Average snowfall in May: 20mm
The month with the highest snowfall is January (156mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Roknäs, Sweden
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Roknäs, Sweden
- Average daylight in May: 19h and 0min
The month with the longest days is June (Average daylight: 22h and 6min).
The month with the shortest days is December (Average daylight: 3h and 42min).
- Average sunshine in May: 11h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 54min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in May
Roknäs, Sweden
- Average sunshine days in May: 19.4 days
The month with the most sunshine days is June (20.1 days).
The month with the least sunshine days is December (14.5 days).
Average UV index in May
Roknäs, Sweden
- 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
Roknäs, Sweden
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in May
Roknäs, Sweden
- Average visibility in May: 9km
The months with the highest visibility are June and July (10km).
The months with the lowest visibility are January, February, March and April (7km).





