May weather forecast
Luleå, Sweden

Weather in May

The last month of the spring, May, is a chilly month in Luleå, Sweden, with an average temperature ranging between max 8.6°C (47.5°F) and min 4°C (39.2°F).

Temperature

In May, the average high-temperature rises from a wintry 2.3°C (36.1°F) in April to a frosty 8.6°C (47.5°F). The average low-temperature, in Luleå, is 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. During 3.3 snowfall days, 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 is 3.1°C (37.6°F).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

In Luleå, the average length of the day in May is 19h and 8min.
On the first day of the month, sunrise is at 03:51 and sunset at 21:05. On the last day of May, sunrise is at 01:57 and sunset at 23:00 CEST.

Sunshine

In May, the average sunshine in Luleå is 10.7h.

UV index

In Luleå, the average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Luleå?

The average high-temperature, in May, in Luleå, is 8.6°C (47.5°F), while the average low-temperature is 4°C (39.2°F).

What is the average humidity in May in Luleå?

The average relative humidity in May in Luleå is 74%.

How many days does it rain in May in Luleå?

In Luleå, Sweden, in May, it is raining for 11.8 days, with typically 33mm (1.3") of accumulated precipitation.

What is the last month it snows in Luleå?

May is the last month it regularly snows in Luleå. During 3.3 snowfall days, in May, Luleå aggregates 27mm (1.06") of snow.

What is the sea temperature in May in Luleå?

In Luleå, Sweden, in May, the average water temperature is 3.1°C (37.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the average length of the day in May in Luleå?

The average day length in May in Luleå, Sweden, is 19h and 8min.

When are sunrise and sunset in May in Luleå?

On the first day of May in Luleå, Sweden, sunrise is at 03:51 and sunset at 21:05. On the last day of the month, sunrise is at 01:57 and sunset at 23:00 CEST.

How many hours of sunshine does Luleå have in May?

The average sunshine duration in May in Luleå is 10.7h.

What is the UV index intensity in May in Luleå?

The average daily maximum UV index in May in Luleå, Sweden, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover

Average temperature in May
Luleå, Sweden

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).

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Average pressure in May
Luleå, Sweden

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).

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Average wind speed in May
Luleå, Sweden

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).

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Average humidity in May
Luleå, Sweden

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%).

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Average rainfall in May
Luleå, Sweden

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).

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Average rainfall days in May
Luleå, Sweden

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).

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Average snowfall in May
Luleå, Sweden

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).

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Average snowfall days in May
Luleå, Sweden

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).

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Average sea temperature in May
Luleå, Sweden

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).

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Average daylight in May /
Average sunshine in May
Luleå, Sweden

Average daylight in May / Average sunshine in May - Luleå, Sweden
  • Average daylight in May: 19h and 8min

The month with the longest days is June (Average daylight: 22h and 29min).
The month with the shortest days is December (Average daylight: 3h and 29min).

  • 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).

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Average sunshine days in May
Luleå, Sweden

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).

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Average UV index in May
Luleå, Sweden

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).

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Average cloud cover in May
Luleå, Sweden

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).

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Average visibility in May
Luleå, Sweden

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).

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