May weather forecastRunnaby, Sweden
May
Weather in May
The last month of the spring, May, is a mild month in Runnaby, Sweden, with an average temperature fluctuating between 15.8°C (60.4°F) and 6°C (42.8°F).Temperature
In Runnaby, the average high-temperature in May rises, from a fresh 10.5°C (50.9°F) in April, to a refreshing 15.8°C (60.4°F). Throughout May, Runnaby witnesses a nighttime temperature average of 6°C (42.8°F).Humidity
The least humid month is May, with an average relative humidity of 69%.Rainfall
In Runnaby, in May, during 11.7 rainfall days, 14mm (0.55") of precipitation is typically accumulated. In Runnaby, Sweden, during the entire year, the rain falls for 104.5 days and collects up to 149mm (5.87") of precipitation.Snowfall
January through May, October through December are months with snowfall in Runnaby. May is the last month it regularly snows. During 0.7 snowfall days, in May, Runnaby aggregates 2mm (0.08") of snow. Throughout the year, there are 48.1 snowfall days, and 162mm (6.38") of snow is accumulated.Daylight
The average length of the day in May is 17h and 1min.On the first day of the month, sunrise is at 04:59 and sunset at 20:54. On the last day of May, sunrise is at 03:55 and sunset at 21:58 CEST.
Sunshine
The average sunshine in May in Runnaby, Sweden, is 8.5h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: During May, 4 as the daily maximum UV index converts into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Runnaby, Sweden
- Average high temperature in May: 15.8°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-1.1°C).
- Average low temperature in May: 6°C
The month with the highest average low temperature is July (12.3°C).
The coldest months (with the lowest average low temperature) are January and February (-4.5°C).
Average pressure in May
Runnaby, Sweden
- Average pressure in May: 1014.5mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in May
Runnaby, Sweden
- Average wind speed in May: 11.1km/h
The windiest month (with the highest average wind speed) is December (12.8km/h).
The calmest month (with the lowest average wind speed) is August (10.6km/h).
Average humidity in May
Runnaby, Sweden
- Average humidity in May: 69%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (69%).
Average rainfall in May
Runnaby, Sweden
- Average rainfall in May: 14mm
The wettest month (with the highest rainfall) is July (20mm).
The driest month (with the least rainfall) is April (6mm).
Average rainfall days in May
Runnaby, Sweden
- Average rainfall days in May: 11.7 days
The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in May
Runnaby, Sweden
- Average snowfall in May: 2mm
The month with the highest snowfall is March (39mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Runnaby, Sweden
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is February (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Runnaby, Sweden
- Average daylight in May: 17h and 0min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in May
Runnaby, Sweden
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is March (19 days).
The months with the least sunshine days are February and December (15.4 days).
Average UV index in May
Runnaby, Sweden
- 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 and February (UV index 1).
Average cloud cover in May
Runnaby, Sweden
- Average cloud cover in May: 46
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is June (Cloud cover 43).
Average visibility in May
Runnaby, Sweden
- Average visibility in May: 9km
The months with the highest visibility are April, May, June, July and August (9km).
The months with the lowest visibility are January and February (7km).
