Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
April's arrival coincides with a temperature rise, moving from March's chilly 8.4°C (47.1°F) to a refreshing 14.1°C (57.4°F). The average low-temperature of 4.6°C (40.3°F) is witnessed in Altena, Germany, during April.Humidity
The months with the lowest humidity in Altena, Germany, are April and August, with an average relative humidity of 76%.Rainfall
The month with the least rainfall in Altena, Germany, is April, when the rain falls for 13.5 days and typically collects 29mm (1.14") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Altena, during April, snow falls for 1.5 days and regularly aggregates up to 11mm (0.43") of snow. Throughout the year, there are 43.4 snowfall days, and 536mm (21.1") of snow is accumulated.Daylight
In Altena, Germany, the average length of the day in April is 13h and 53min.On the first day of April, sunrise is at 07:03 and sunset at 20:02. On the last day of the month, sunrise is at 06:02 and sunset at 20:50 CEST.
Sunshine
In April, the average sunshine in Altena is 8.6h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 during April leads to these advisories:
Take necessary precautions - Suggestions to elude sunburn are provided. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Altena in April?
What is the least humid month in Altena?
What is the average humidity in April in Altena?
What is the driest month in Altena?
How many days does it rain in April in Altena?
How many days does it snow in April in Altena?
What is the average length of the day in April in Altena?
When is the sunrise / sunset in April in Altena?
How long on average sun shines in April in Altena?
How high is the UV index in April in Altena?
Average temperature in April
Altena, Germany
- Average high temperature in April: 14.1°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in April: 4.6°C
The month with the highest average low temperature is August (12.6°C).
The coldest month (with the lowest average low temperature) is January (-0.9°C).
Average pressure in April
Altena, Germany
- Average pressure in April: 1015.9mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in April
Altena, Germany
- Average wind speed in April: 10.6km/h
The windiest month (with the highest average wind speed) is February (14km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in April
Altena, Germany
- Average humidity in April: 76%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are April and August (76%).
Average rainfall in April
Altena, Germany
- Average rainfall in April: 29mm
The wettest month (with the highest rainfall) is December (73mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in April
Altena, Germany
- Average rainfall days in April: 13.5 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in April
Altena, Germany
- Average snowfall in April: 11mm
The month with the highest snowfall is January (143mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Altena, Germany
- Average snowfall days in April: 1.5 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Altena, Germany
- Average daylight in April: 13h and 5min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in April
Altena, Germany
- Average sunshine days in April: 14.4 days
The month with the most sunshine days is April (14.4 days).
The month with the least sunshine days is December (9.5 days).
Average UV index in April
Altena, Germany
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Altena, Germany
- Average cloud cover in April: 42
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in April
Altena, Germany
- Average visibility in April: 9km
The months with the highest visibility are April, June and August (9km).
The months with the lowest visibility are January and December (7km).
