May weather forecastLuleå, Sweden
May
Weather in May
The warmth of mid-spring in May provides a pleasant contrast to Luleå's extremely cold winter months. Temperatures rise steadily, bringing with them a tangible feel of summer, although the last vestiges of winter can still be sensed. The marked difference in temperature sees an increase in humidity while the sky begins to clear, paving the way for more sunshine. With noticeable changes in its weather patterns, Luleå enters an entirely different phase of the year. May concludes by raising expectations of a sunny and moderately humid June.Temperature
Luleå's weather shows a temperature rise with the arrival of May, moving from a wintry 2.3°C (36.1°F) in April to a frosty 8.6°C (47.5°F). The month of May shows a minor drop from daytime temperatures, generally recording a low average of 4°C (39.2°F).Humidity
The average relative humidity in May is 74%.Rainfall
In Luleå, in May, it is raining for 11.8 days, with typically 33mm (1.3") of accumulated precipitation. In Luleå, during the entire year, the rain falls for 110.8 days and collects up to 409mm (16.1") of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Luleå. During 3.3 snowfall days, in May, Luleå aggregates 27mm (1.06") of snow. Throughout the year, there are 82.2 snowfall days, and 846mm (33.31") of snow is accumulated.Sea temperature
In May, the average sea temperature in Luleå is 3.1°C (37.6°F).Note: In the realm of swimming, this is an immediate threat to life. Total loss of control over breathing happens instantly, complicating clear thought processes. The necessity of a specialized swimsuit to restrict thermal loss is paramount.
Daylight
The average length of the day in May is 19h and 8min.On the first day of the month, sunrise is at 03:49 and sunset at 21:07. On the last day of May, in Luleå, Sweden, sunrise is at 01:55 and sunset at 23:02 CEST.
Sunshine
The average sunshine in May in Luleå is 10.7h.UV index
The average daily maximum UV index in May in Luleå is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In May, an average UV index of 3 transforms into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Luleå, Sweden
- Average high temperature in May: 8.6°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (-5.7°C).
- Average low temperature in May: 4°C
The month with the highest average low temperature is July (13°C).
The coldest month (with the lowest average low temperature) is February (-10.6°C).
Average pressure in May
Luleå, Sweden
- Average pressure in May: 1014mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1004.8mbar).
Average wind speed in May
Luleå, Sweden
- Average wind speed in May: 13.6km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is April (13km/h).
Average humidity in May
Luleå, Sweden
- Average humidity in May: 74%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is June (70%).
Average rainfall in May
Luleå, Sweden
- Average rainfall in May: 33mm
The wettest month (with the highest rainfall) is December (46mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in May
Luleå, Sweden
- Average rainfall days in May: 11.8 days
The month with the highest number of rainy days is August (13.9 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in May
Luleå, Sweden
- Average snowfall in May: 27mm
The month with the highest snowfall is December (178mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Luleå, Sweden
- Average snowfall days in May: 3.3 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Luleå, Sweden
- Average sea temperature in May: 3.1°C
The best month for swimming (with the highest average sea temperature) is July (16.3°C).
The coldest month (with the lowest average sea temperature) is February (-0.7°C).
Average daylight in May /
Average sunshine in May
Luleå, Sweden
- Average daylight in May: 19h and 6min
The month with the longest days is June (Average daylight: 22h and 30min).
The month with the shortest days is December (Average daylight: 3h and 30min).
- Average sunshine in May: 10h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in May
Luleå, Sweden
- Average sunshine days in May: 15.3 days
The months with the most sunshine days are June and October (16.5 days).
The month with the least sunshine days is December (11.6 days).
Average UV index in May
Luleå, Sweden
- 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, November and December (UV index 1).
Average cloud cover in May
Luleå, Sweden
- Average cloud cover in May: 47
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in May
Luleå, 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 and April (7km).
