May weather forecast and climate
Roskilde, Denmark

Weather in May

The last month of the spring, May, is a mild month in Roskilde, Denmark, with average temperature fluctuating between 14.9°C (58.8°F) and 8°C (46.4°F).

Temperature

In Roskilde, the average high-temperature slightly increases, from a fresh 10.5°C (50.9°F) in April, to a moderate 14.9°C (58.8°F). The average low-temperature, in Roskilde, Denmark, is 8°C (46.4°F).

Humidity

Months with the lowest humidity are April through July, with an average relative humidity of 77%.

Rainfall

In Roskilde, during May, the rain falls for 16.2 days and regularly aggregates up to 33mm (1.3") of precipitation. Throughout the year, there are 166.6 rainfall days, and 341mm (13.43") of precipitation is accumulated.

Snowfall

In Roskilde snow does not fall through October.

Sea temperature

In Roskilde, Denmark, the average seawater temperature in May is 11.1°C (52°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

In Roskilde, the average length of the day is 16.3h.

Sunshine

The average sunshine in May is 8.4h.

UV index

The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What are the least humid months in Roskilde?

April through July, with an average relative humidity of 77%, are the least humid months in Roskilde.

What is the average humidity in May in Roskilde?

The average relative humidity in May in Roskilde is 77%.

How many days does it rain in May in Roskilde?

In Roskilde, in May, it is raining for 16.2 days, with typically 33mm (1.3") of accumulated precipitation.

When it does not snow in Roskilde?

In Roskilde snow does not fall in May through October.

Does it snow in Roskilde in May?

In May, in Roskilde, it doesn't snow. April is the latest month when it typically snows.

What is the water temperature in May in Roskilde?

In Roskilde, Denmark, the average seawater temperature in May is 11.1°C (52°F). Swimming in 11.1°C (52°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

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

In May, the average length of the day in Roskilde is 16.3h.

How many hours of sunshine does Roskilde have in May?

In May, the average sunshine in Roskilde is 8.4h.

What is the UV index reading in May in Roskilde?

The average daily maximum UV index in May in Roskilde is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in May
Roskilde, Denmark

Average temperature in May - Roskilde, Denmark
  • Average high temperature in May: 14.9°C

The warmest month (with the highest average high temperature) is July (20.4°C).
Months with the lowest average high temperature are January and February (2.8°C).

  • Average low temperature in May: 8°C

The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is February (-0.6°C).

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Average pressure in May
Roskilde, Denmark

Average pressure in May - Roskilde, Denmark
  • Average pressure in May: 1015.5mbar

The month with the highest atmospheric pressure is April (1015.6mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).

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Average wind speed in May
Roskilde, Denmark

Average wind speed in May - Roskilde, Denmark
  • Average wind speed in May: 14.1km/h

The windiest month (with the highest average wind speed) is December (19.1km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).

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Average humidity in May
Roskilde, Denmark

Average humidity in May - Roskilde, Denmark
  • Average humidity in May: 77%

Months with the highest relative humidity are January, November and December (88%).
Months with the lowest relative humidity are April, May, June and July (77%).

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Average rainfall in May
Roskilde, Denmark

Average rainfall in May - Roskilde, Denmark
  • Average rainfall in May: 33mm

The wettest month (with the highest rainfall) is August (45mm).
The driest month (with the least rainfall) is April (17mm).

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Average rainfall days in May
Roskilde, Denmark

Average rainfall days in May - Roskilde, Denmark
  • Average rainfall days in May: 16.2 days

Months with the highest number of rainy days are July and August (16.9 days).
The month with the least rainy days is February (9.1 days).

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Average snowfall in May
Roskilde, Denmark

Average snowfall in May - Roskilde, Denmark
  • Average snowfall in May: 0mm

The month with the highest snowfall is February (35mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in May
Roskilde, Denmark

Average snowfall days in May - Roskilde, Denmark
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (8.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in May
Roskilde, Denmark

Average sea temperature in May - Roskilde, Denmark
  • Average sea temperature in May: 11.1°C

The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is February (2.1°C).

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Average daylight in May /
Average sunshine in May
Roskilde, Denmark

Average daylight in May / Average sunshine in May - Roskilde, Denmark
  • Average daylight in May: 16.3h

The month with the longest days is June (Average daylight: 17.4h).
The month with the shortest days is December (Average daylight: 7.1h).

  • Average sunshine in May: 8.4h

The month with the most sunshine is August (Average sunshine: 9.4h).
The month with the least sunshine is December (Average sunshine: 3h).

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Average sunshine days in May
Roskilde, Denmark

Average sunshine days in May - Roskilde, Denmark
  • Average sunshine days in May: 12.1 days

The month with the most sunshine days is April (14.6 days).
The month with the least sunshine days is August (9.8 days).

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Average UV index in May
Roskilde, Denmark

Average UV index in May - Roskilde, Denmark
  • Average UV index in May: 4

Months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in May
Roskilde, Denmark

Average cloud cover in May - Roskilde, Denmark
  • Average cloud cover in May: 45

The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 39).

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Average visibility in May
Roskilde, Denmark

Average visibility in May - Roskilde, Denmark
  • Average visibility in May: 9km

Months with the highest visibility are April, June, August and September (10km).
Months with the lowest visibility are January, February, March, May, July, October, November and December (9km).

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