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 sea temperature 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
Weather in May
Temperature
The arrival of May brings an increase in high-temperatures, moving from a chilly 7°C (44.6°F) in April to a cool 12.8°C (55°F). During the month of May, the temperature in Sundsvall generally drops to a low average of 4.8°C (40.6°F).Humidity
The average relative humidity in May is 67%.Rainfall
In May, in Sundsvall, the rain falls for 13.1 days. Throughout May, 33mm (1.3") of precipitation is accumulated. In Sundsvall, Sweden, during the entire year, the rain falls for 117.2 days and collects up to 384mm (15.12") of precipitation.Snowfall
Months with snowfall in Sundsvall are January through May, October through December. May is the last month it regularly snows. During 1.4 snowfall days, in May, Sundsvall aggregates 21mm (0.83") of snow. Throughout the year, in Sundsvall, there are 70.7 snowfall days, and 908mm (35.75") of snow is accumulated.Sea temperature
In May, the average sea temperature in Sundsvall is 4°C (39.2°F).Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.
Daylight
The average length of the day in May is 17h and 52min.On the first day of the month, sunrise is at 04:32 and sunset at 21:02. On the last day of May, sunrise is at 03:13 and sunset at 22:23 CEST.
Sunshine
The average sunshine in May is 9.9h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during May leads to these instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Sundsvall in May?
What is the average humidity in May in Sundsvall?
How much does it rain in Sundsvall in May?
What is the last month it snows in Sundsvall?
What is the water temperature in May in Sundsvall?
How many hours of daylight does Sundsvall have in May?
When is the sunrise / sunset in May in Sundsvall?
How long on average sun shines in May in Sundsvall?
What is the UV index intensity in May in Sundsvall?
Average temperature in May
Sundsvall, Sweden
- Average high temperature in May: 12.8°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-3°C).
- Average low temperature in May: 4.8°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is February (-6.9°C).
Average pressure in May
Sundsvall, Sweden
- Average pressure in May: 1014.3mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.9mbar).
Average wind speed in May
Sundsvall, Sweden
- Average wind speed in May: 10.4km/h
The windiest month (with the highest average wind speed) is January (11.9km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).
Average humidity in May
Sundsvall, Sweden
- Average humidity in May: 67%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is June (66%).
Average rainfall in May
Sundsvall, Sweden
- Average rainfall in May: 33mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in May
Sundsvall, Sweden
- Average rainfall days in May: 13.1 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in May
Sundsvall, Sweden
- Average snowfall in May: 21mm
The month with the highest snowfall is January (217mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Sundsvall, Sweden
- Average snowfall days in May: 1.4 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Sundsvall, Sweden
- Average sea temperature in May: 4°C
The best month for swimming (with the highest average sea temperature) is August (15°C).
The coldest months (with the lowest average sea temperature) are January, February and March (1°C).
Average daylight in May /
Average sunshine in May
Sundsvall, Sweden
- Average daylight in May: 17h and 5min
The month with the longest days is June (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in May: 9h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in May
Sundsvall, Sweden
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in May
Sundsvall, 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, February, November and December (UV index 1).
Average cloud cover in May
Sundsvall, Sweden
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in May
Sundsvall, Sweden
- Average visibility in May: 9km
The months with the highest visibility are April, May, June, July, August and October (9km).
The months with the lowest visibility are January, February and March (7km).
Sundsvall, Sweden
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