May weather forecastJärna, Sweden

May weather for Järna, Sweden: On the last day of the month, in Järna, Sweden, sunrise is at 03:47 and sunset at 21:47 CEST. The last month of the spring, May, is a moderate month in Järna, Sweden, with temperature in the range of an average low of 6.5°C (43.7°F) and an average high of 14.5°C (58.1°F).

May

Weather in May

The last month of the spring, May, is a moderate month in Järna, Sweden, with temperature in the range of an average low of 6.5°C (43.7°F) and an average high of 14.5°C (58.1°F).

Temperature

Järna sees a rise in temperature during May, with average high-temperatures transitioning from a frosty 9.5°C (49.1°F) in April to a moderate 14.5°C (58.1°F). Järna experiences a mean low-temperature of 6.5°C (43.7°F) during May.

Humidity

May is the least humid month in Järna, with an average relative humidity of 72%.

Rainfall

In May, the rain falls for 12.6 days. Throughout May, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 131.4 rainfall days, and 350mm (13.78") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Järna. May is the last month it regularly snows. During 0.7 snowfall days, in May, Järna aggregates 6mm (0.24") of snow. Throughout the year, in Järna, there are 45.7 snowfall days, and 309mm (12.17") of snow is accumulated.

Daylight

In May, the average length of the day is 16h and 59min.
On the first day of May in Järna, sunrise is at 04:50 and sunset at 20:43. On the last day of the month, sunrise is at 03:47 and sunset at 21:47 CEST.

Sunshine

In May, the average sunshine is 9.3h.

UV index

In Järna, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 4 in May transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.

Frequently asked questions

The average high-temperature, in May, in Järna, is 14.5°C (58.1°F), while the average low-temperature is 6.5°C (43.7°F).

The least humid month in Järna is May, with an average relative humidity of 72%.

In May, the average relative humidity is 72%.

In May, the rain falls for 12.6 days. Throughout May, 29mm (1.14") of precipitation is accumulated.

May is the last month it regularly snows. During 0.7 snowfall days, in May, Järna aggregates 6mm (0.24") of snow.

In Järna, Sweden, the average day length in May is 16h and 59min.

In May, on the first day of the month, sunrise is at 04:50 and sunset at 20:43. On the last day of the month, in Järna, Sweden, sunrise is at 03:47 and sunset at 21:47 CEST.

In May, the average sunshine duration in Järna is 9.3h.

The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents 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 sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Järna, Sweden

  • Average high temperature in May: 14.5°C

The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-0.5°C).

  • Average low temperature in May: 6.5°C

The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is February (-3.6°C).

Average pressure in May
Järna, 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 (1008mbar).

Average wind speed in May
Järna, Sweden

  • Average wind speed in May: 13.2km/h

The windiest month (with the highest average wind speed) is December (18km/h).
The calmest months (with the lowest average wind speed) are July and August (12.5km/h).

Average humidity in May
Järna, Sweden

  • Average humidity in May: 72%

The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is May (72%).

Average rainfall in May
Järna, Sweden

  • Average rainfall in May: 29mm

The wettest month (with the highest rainfall) is July (44mm).
The driest month (with the least rainfall) is April (15mm).

Average rainfall days in May
Järna, Sweden

  • Average rainfall days in May: 12.6 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in May
Järna, Sweden

  • Average snowfall in May: 6mm

The month with the highest snowfall is February (87mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May
Järna, Sweden

  • Average snowfall days in May: 0.7 days

The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

  • Average daylight in May: 17h and 0min

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

  • Average sunshine in May: 9h and 18min

The month with the most sunshine is June (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).

Average sunshine days in May
Järna, Sweden

  • Average sunshine days in May: 16.9 days

The month with the most sunshine days is May (16.9 days).
The months with the least sunshine days are June and July (13.6 days).

Average UV index in May
Järna, Sweden

  • Average UV index in May: 4

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
Järna, Sweden

  • Average cloud cover in May: 42

The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in May
Järna, Sweden

  • Average visibility in May: 9km

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