May weather forecast
Forsmark, Sweden

May

Weather in May

The last month of the spring, May, is a cool month in Forsmark, Sweden, with an average temperature varying between 12.1°C (53.8°F) and 6.3°C (43.3°F).

Temperature

With the transition into May, Forsmark experiences a subtle uplift in average high-temperatures, adjusting from a frosty 7.4°C (45.3°F) in April to a fresh 12.1°C (53.8°F). Throughout the month of May, the nighttime temperature dips to an average of 6.3°C (43.3°F).

Humidity

The months with the lowest humidity are May and June, with an average relative humidity of 74%.

Rainfall

In Forsmark, in May, it is raining for 13.3 days, with typically 31mm (1.22") of accumulated precipitation. Throughout the year, there are 136.5 rainfall days, and 345mm (13.58") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.5 snowfall days, in May, Forsmark aggregates 7mm (0.28") of snow. In Forsmark, during the entire year, snow falls for 51.1 days and aggregates up to 330mm (12.99") of snow.

Daylight

In May, the average length of the day is 17h and 17min.
On the first day of May, sunrise is at 04:41 and sunset at 20:47. On the last day of the month, sunrise is at 03:33 and sunset at 21:57 CEST.

Sunshine

The average sunshine in May is 9.8h.

UV index

In May, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 3 in May translates into these instructions:
Exercise prevention - Protecting skin and eyes from harm is required. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Frequently asked questions

What is the usual temperature for Forsmark in May?
In May, in Forsmark, the average high-temperature is 12.1°C (53.8°F), and the average low-temperature is 6.3°C (43.3°F).
What are the least humid months?
May and June, with an average relative humidity of 74%, are the least humid months in Forsmark.
What is the average humidity in May?
The average relative humidity in May is 74%.
How much does it rain in May?
In Forsmark, in May, it is raining for 13.3 days, with typically 31mm (1.22") of accumulated precipitation.
What is the last month it snows?
May is the last month it regularly snows. During 0.5 snowfall days, in May, Forsmark aggregates 7mm (0.28") of snow.
How many hours of daylight does Forsmark have in May?
In Forsmark, the average day length in May is 17h and 17min.
What time are sunrise and sunset in May?
In May, on the first day of the month, sunrise is at 04:41 and sunset at 20:47. On the last day of the month, in Forsmark, Sweden, sunrise is at 03:33 and sunset at 21:57 CEST.
How many hours of sunshine does Forsmark have in May?
In May, the average sunshine duration is 9.8h.
How high is the UV index in May?
In May, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May - Forsmark, Sweden
Average temperature in May
Forsmark, Sweden
  • Average high temperature in May: 12.1°C

The warmest month (with the highest average high temperature) is July (19.7°C).
The months with the lowest average high temperature are January and February (-0.1°C).

  • Average low temperature in May: 6.3°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-2.9°C).

Average pressure in May - Forsmark, Sweden
Average pressure in May
Forsmark, Sweden
  • Average pressure in May: 1014.7mbar

The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.1mbar).

Average wind speed in May - Forsmark, Sweden
Average wind speed in May
Forsmark, Sweden
  • Average wind speed in May: 14.9km/h

The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is July (14.2km/h).

Average humidity in May - Forsmark, Sweden
Average humidity in May
Forsmark, Sweden
  • Average humidity in May: 74%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (74%).

Average rainfall in May - Forsmark, Sweden
Average rainfall in May
Forsmark, Sweden
  • Average rainfall in May: 31mm

The wettest month (with the highest rainfall) is July (52mm).
The driest months (with the least rainfall) are February and April (16mm).

Average rainfall days in May - Forsmark, Sweden
Average rainfall days in May
Forsmark, Sweden
  • Average rainfall days in May: 13.3 days

The month with the highest number of rainy days is August (16.5 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in May - Forsmark, Sweden
Average snowfall in May
Forsmark, Sweden
  • Average snowfall in May: 7mm

The month with the highest snowfall is March (78mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May - Forsmark, Sweden
Average snowfall days in May
Forsmark, Sweden
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Forsmark, Sweden
Average daylight in May /
Average sunshine in May
Forsmark, Sweden
  • Average daylight in May: 17h and 2min

The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).

  • Average sunshine in May: 9h and 5min

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 30min).

Average sunshine days in May - Forsmark, Sweden
Average sunshine days in May
Forsmark, Sweden
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is December (11.6 days).

Average UV index in May - Forsmark, Sweden
Average UV index in May
Forsmark, Sweden
  • Average UV index in May: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in May - Forsmark, Sweden
Average cloud cover in May
Forsmark, Sweden
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in May - Forsmark, Sweden
Average visibility in May
Forsmark, 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).

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