April weather forecastAlster, Sweden

April

Weather in April

April is a frosty spring month in Alster, Sweden, with an average temperature fluctuating between 9.8°C (49.6°F) and 3.3°C (37.9°F).

Temperature

Alster's transition into April sees a rise in the average high-temperature, advancing from a cold 3.5°C (38.3°F) in March to a frosty 9.8°C (49.6°F). During April, Alster observes a consistent average nighttime temperature of 3.3°C (37.9°F).

Humidity

In April, the average relative humidity is 71%.

Rainfall

April is the month with the least rainfall. Rain falls for 10.2 days and accumulates 16mm (0.63") of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Alster, during April, snow falls for 1.9 days and regularly aggregates up to 14mm (0.55") of snow. In Alster, during the entire year, snow falls for 47.6 days and aggregates up to 416mm (16.38") of snow.

Daylight

In Alster, Sweden, the average length of the day in April is 14h and 33min.
On the first day of April, sunrise is at 06:29 and sunset at 19:48. On the last day of the month, sunrise is at 05:07 and sunset at 20:58 CEST.

Sunshine

In Alster, the average sunshine in April is 8.8h.

UV index

In Alster, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 3 in April translates into this advice:
Act with care - The suggestion to avoid sunburn is emphasized. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Stay sun-safe with clothing that is both closely woven and worn loosely. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.

Updated: Jul 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Alster in April has an average high-temperature of 9.8°C (49.6°F) and an average low-temperature of 3.3°C (37.9°F).

In Alster, the average relative humidity in April is 71%.

The month with the least rainfall is April, when the rain falls for 10.2 days and typically collects 16mm (0.63") of precipitation.

In Alster, in April, during 10.2 rainfall days, 16mm (0.63") of precipitation is typically accumulated.

In Alster, in April, snow falls for 1.9 days, with typically accumulated 14mm (0.55") of snow.

The average day length in April is 14h and 33min.

In April, on the first day of the month, sunrise is at 06:29 and sunset at 19:48. On the last day of the month, sunrise is at 05:07 and sunset at 20:58 CEST.

The average sunshine duration in April is 8.8h.

In Alster, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M April M J J A S O N D

Mar

April

May

Average high temperature

3.5°C

9.8°C

14.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.8km/h

14.3km/h

14km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

14.3

17.5

Average UV index

Average cloud cover

Average visibility

Average temperature in April
Alster, Sweden

Average high temperature in April: 9.8°C

The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (-0.3°C).

Average low temperature in April: 3.3°C

The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is February (-3.8°C).

Average pressure in April
Alster, Sweden

Average pressure in April: 1014.2mbar

The months with the highest atmospheric pressure are April and May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

Average wind speed in April
Alster, Sweden

Average wind speed in April: 13.4km/h

The windiest month (with the highest average wind speed) is December (16.7km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).

Average humidity in April
Alster, Sweden

Average humidity in April: 71%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (69%).

Average rainfall in April
Alster, Sweden

Average rainfall in April: 16mm

The wettest month (with the highest rainfall) is July (57mm).
The driest month (with the least rainfall) is April (16mm).

Average rainfall days in April
Alster, Sweden

Average rainfall days in April: 10.2 days

The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are January and February (7.1 days).

Average snowfall in April
Alster, Sweden

Average snowfall in April: 14mm

The month with the highest snowfall is January (108mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in April
Alster, Sweden

Average snowfall days in April: 1.9 days

The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Alster, Sweden

Average daylight in April: 14h and 36min

The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).

Average sunshine in April: 8h and 48min

The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).