April weather forecastHeidelberg, Germany
April
Weather in April
By the time April rolls around, Heidelberg has firmly stepped into the realm of spring. Compared to March, the weather leans more towards the balmy side with fewer rainfalls. Nature revelers can expect to see greener sceneries, larger blue skies, and an uptick in outdoor activities. The climate takes a notable leap towards the warm side as the average high temperature escalates to 16.3°C (61.3°F). As it warmly greets April showers, Heidelberg ramps up for the impending summer season.Temperature
April's arrival brings a temperature shift, moving from a cool 10.8°C (51.4°F) in March to a comfortable 16.3°C (61.3°F). In April, the nighttime temperature in Heidelberg, Germany, lowers to an average of 6.5°C (43.7°F).Humidity
In Heidelberg, the average relative humidity in April is 69%.Rainfall
April is the month with the least rainfall in Heidelberg. Rain falls for 11.4 days and accumulates 19mm (0.75") of precipitation.Snowfall
In Heidelberg, snow does not fall in April through September.Daylight
In April, the average length of the day in Heidelberg is 13h and 46min.On the first day of the month, sunrise is at 07:01 and sunset at 19:56. On the last day of April, in Heidelberg, sunrise is at 06:03 and sunset at 20:41 CEST.
Sunshine
In Heidelberg, Germany, the average sunshine in April is 9.3h.UV index
In April, the average daily maximum UV index in Heidelberg is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 4 in April translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Heidelberg, Germany
- Average high temperature in April: 16.3°C
The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (4°C).
- Average low temperature in April: 6.5°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).
Average pressure in April
Heidelberg, Germany
- Average pressure in April: 1015.7mbar
The month with the highest atmospheric pressure is December (1019.1mbar).
The month with the lowest atmospheric pressure is November (1015mbar).
Average wind speed in April
Heidelberg, Germany
- Average wind speed in April: 10.2km/h
The windiest month (with the highest average wind speed) is February (12.3km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in April
Heidelberg, Germany
- Average humidity in April: 69%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are July and August (67%).
Average rainfall in April
Heidelberg, Germany
- Average rainfall in April: 19mm
The wettest month (with the highest rainfall) is May (50mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in April
Heidelberg, Germany
- Average rainfall days in April: 11.4 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is September (10.8 days).
Average snowfall in April
Heidelberg, Germany
- Average snowfall in April: 0mm
The month with the highest snowfall is December (44mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in April
Heidelberg, Germany
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Heidelberg, Germany
- Average daylight in April: 13h and 48min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in April: 9h and 18min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in April
Heidelberg, Germany
- Average sunshine days in April: 17 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is December (11.5 days).
Average UV index in April
Heidelberg, Germany
- Average UV index in April: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Heidelberg, Germany
- Average cloud cover in April: 36
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in April
Heidelberg, Germany
- Average visibility in April: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and December (8km).
