May weather forecastNorrtälje, Sweden
May
Weather in May
The weather in Norrtälje, Sweden in May showcases an entirely different face of the city. The temperatures rise significantly as the strong grip of winter finally relaxes, paving the way for the charms of the spring season. A drastic change is noticed in terms of snowfall, as Norrtälje records 9mm (0.35") of snowfall in May, signifying the withdrawal of winter. It results in an explosion of colors as flowers bloom to full form and trees exhibit fresh leaved canopies. The weather becomes comfortably warm, serving as a prelude to the approaching summer season.Temperature
The start of May in Norrtälje brings a subtle rise in the average high-temperature, moving from a chilly 7.5°C (45.5°F) in April to a fresh 12.1°C (53.8°F). Throughout the May nights, Norrtälje encounters a low-temperature of 6.7°C (44.1°F).Humidity
The months with the lowest humidity in Norrtälje, Sweden, are April through June, with an average relative humidity of 75%.Rainfall
In Norrtälje, Sweden, during May, the rain falls for 12.7 days and regularly aggregates up to 30mm (1.18") of precipitation. In Norrtälje, during the entire year, the rain falls for 140.1 days and collects up to 354mm (13.94") of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Norrtälje aggregates 9mm (0.35") of snow. In Norrtälje, during the entire year, snow falls for 47.1 days and aggregates up to 311mm (12.24") of snow.Daylight
In May, the average length of the day in Norrtälje, Sweden, is 17h and 8min.On the first day of the month, sunrise is at 04:42 and sunset at 20:42. On the last day of May, in Norrtälje, sunrise is at 03:37 and sunset at 21:48 CEST.
Sunshine
The average sunshine in May is 9.8h.UV index
The average daily maximum UV index in May in Norrtälje, Sweden, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in May translates into this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Norrtälje, Sweden
- Average high temperature in May: 12.1°C
The warmest months (with the highest average high temperature) are July and August (19.5°C).
The month with the lowest average high temperature is January (0.2°C).
- Average low temperature in May: 6.7°C
The months with the highest average low temperature are July and August (14.1°C).
The coldest months (with the lowest average low temperature) are January and February (-2.5°C).
Average pressure in May
Norrtälje, Sweden
- 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 (1007.5mbar).
Average wind speed in May
Norrtälje, Sweden
- Average wind speed in May: 15.5km/h
The windiest month (with the highest average wind speed) is December (21.8km/h).
The calmest month (with the lowest average wind speed) is July (14.3km/h).
Average humidity in May
Norrtälje, Sweden
- Average humidity in May: 75%
The months with the highest relative humidity are February and November (86%).
The months with the lowest relative humidity are April, May and June (75%).
Average rainfall in May
Norrtälje, Sweden
- Average rainfall in May: 30mm
The wettest month (with the highest rainfall) is July (52mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in May
Norrtälje, Sweden
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Norrtälje, Sweden
- Average snowfall in May: 9mm
The month with the highest snowfall is February (82mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Norrtälje, Sweden
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Norrtälje, Sweden
- Average daylight in May: 17h and 6min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in May: 9h and 48min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in May
Norrtälje, Sweden
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is May (14.5 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in May
Norrtälje, 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 and February (UV index 1).
Average cloud cover in May
Norrtälje, Sweden
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Norrtälje, Sweden
- Average visibility in May: 9km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
