May weather forecast
Trosa, Sweden

May

Weather in May

The last month of the spring, May, is a mild month in Trosa, Sweden, with temperature in the range of an average low of 6.3°C (43.3°F) and an average high of 15.5°C (59.9°F).

Temperature

May's arrival brings a temperature shift, moving from a fresh 10.1°C (50.2°F) in April to a moderate 15.5°C (59.9°F). Trosa experiences a steady low-temperature of 6.3°C (43.3°F) throughout May.

Humidity

May is the least humid month, with an average relative humidity of 70%.

Rainfall

In May, the rain falls for 14.5 days. Throughout May, 34mm (1.34") of precipitation is accumulated. In Trosa, during the entire year, the rain falls for 143.7 days and collects up to 387mm (15.24") of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.7 snowfall days, in May, Trosa aggregates 6mm (0.24") of snow. In Trosa, Sweden, during the entire year, snow falls for 57.2 days and aggregates up to 427mm (16.81") of snow.

Sea temperature

In Trosa, the average seawater temperature in May is 7.8°C (46°F).
Note: It is life-risking to swim in 7.8°C (46°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.

Daylight

In Trosa, the average length of the day in May is 16h and 56min.
On the first day of the month, sunrise is at 04:51 and sunset at 20:42. On the last day of May, sunrise is at 03:49 and sunset at 21:45 CEST.

Sunshine

In Trosa, the average sunshine in May is 9h.

UV index

In May, the average daily maximum UV index in Trosa is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.

Frequently asked questions

What is the usual temperature for Trosa in May?
May temperatures vary between a high-temperature of 15.5°C (59.9°F) and a low-temperature of 6.3°C (43.3°F).
What is the least humid month?
May is the least humid month, with an average relative humidity of 70%.
What is the average humidity in May in Trosa?
In May, the average relative humidity in Trosa is 70%.
How many days does it rain in May?
In Trosa, during May, the rain falls for 14.5 days and regularly aggregates up to 34mm (1.34") of precipitation.
What is the last month it snows?
May is the last month it regularly snows. During 0.7 snowfall days, in May, Trosa aggregates 6mm (0.24") of snow.
What is the sea water temperature in May?
In Trosa, the average seawater temperature in May is 7.8°C (46°F). Swimming in 7.8°C (46°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
What is the average length of the day in May?
In May, the average day length is 16h and 56min.
When is the sunrise / sunset in May?
On the first day of May, sunrise is at 04:51 and sunset at 20:42. On the last day of the month, sunrise is at 03:49 and sunset at 21:45 CEST.
How long on average sun shines in May?
In May, the average sunshine duration is 9h.
What is the UV index reading in May?
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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 sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May
Trosa, Sweden
  • Average high temperature in May: 15.5°C

The warmest month (with the highest average high temperature) is July (22.1°C).
The month with the lowest average high temperature is January (-0.6°C).

  • Average low temperature in May: 6.3°C

The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).

Average pressure in May
Trosa, Sweden
  • Average pressure in May: 1014.8mbar

The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).

Average wind speed in May
Trosa, Sweden
  • Average wind speed in May: 12.3km/h

The windiest month (with the highest average wind speed) is December (16km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).

Average humidity in May
Trosa, Sweden
  • Average humidity in May: 70%

The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is May (70%).

Average rainfall in May
Trosa, Sweden
  • Average rainfall in May: 34mm

The wettest month (with the highest rainfall) is October (41mm).
The driest month (with the least rainfall) is April (18mm).

Average rainfall days in May
Trosa, Sweden
  • Average rainfall days in May: 14.5 days

The months with the highest number of rainy days are July and August (14.6 days).
The month with the least rainy days is February (7.1 days).

Average snowfall in May
Trosa, Sweden
  • Average snowfall in May: 6mm

The month with the highest snowfall is January (110mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May
Trosa, Sweden
  • Average snowfall days in May: 0.7 days

The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in May
Trosa, Sweden
  • Average sea temperature in May: 7.8°C

The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is February (1°C).

Average daylight in May /
Average sunshine in May
Trosa, Sweden
  • Average daylight in May: 16h and 5min

The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).

Average sunshine days in May
Trosa, Sweden
  • Average sunshine days in May: 13.5 days

The month with the most sunshine days is April (14.6 days).
The month with the least sunshine days is February (10.3 days).

Average UV index in May
Trosa, Sweden
  • Average UV index in May: 4

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

Average cloud cover in May
Trosa, Sweden
  • Average cloud cover in May: 44

The months with the most cloud cover are February and December (Cloud cover 67).
The months with the least cloud cover are June, July and August (Cloud cover 40).

Average visibility in May
Trosa, Sweden
  • Average visibility in May: 9km

The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).

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