August weather forecastHeidelberg, Germany
August
Weather in August
August rings in the tail end of summer in Heidelberg, with the temperature graph starting to bend downwards gradually. Despite this, the city still enjoys a predominantly warm climate, akin to July. It remains an ideal period for tourist influx, considerably due to its pleasing summer climate. August sees the mercury reaching a height similar to the preceding month, registering 25.8°C (78.4°F) during the daytime. Although the grip of summer starts to loosen, it still holds the charm of a sunny season before welcoming the autumn.Temperature
August, with average temperatures reaching a high of 25.8°C (78.4°F) and a low of 15.3°C (59.5°F), is the warmest month.Humidity
July and August, with an average relative humidity of 67%, are the least humid months.Rainfall
In August, the rain falls for 15.1 days. Throughout August, 43mm (1.69") of precipitation is accumulated. In Heidelberg, during the entire year, the rain falls for 164.2 days and collects up to 434mm (17.09") of precipitation.Snowfall
April through September are months without snowfall in Heidelberg.Daylight
The average length of the day in August in Heidelberg is 14h and 22min.On the first day of the month, sunrise is at 05:57 and sunset at 21:05. On the last day of August, sunrise is at 06:40 and sunset at 20:10 CEST.
Sunshine
July and August, with an average of 10.5h of sunshine, are months with the most sunshine.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 during August translates into the following guidance:
Exercise prevention - Warding off sunburn is urged. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Heidelberg, Germany
- Average high temperature in August: 25.8°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 August: 15.3°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 August
Heidelberg, Germany
- Average pressure in August: 1016.5mbar
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 August
Heidelberg, Germany
- Average wind speed in August: 8.7km/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 August
Heidelberg, Germany
- Average humidity in August: 67%
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 August
Heidelberg, Germany
- Average rainfall in August: 43mm
The wettest month (with the highest rainfall) is May (50mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in August
Heidelberg, Germany
- Average rainfall days in August: 15.1 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 August
Heidelberg, Germany
- Average snowfall in August: 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 August
Heidelberg, Germany
- Average snowfall days in August: 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 August /
Average sunshine in August
Heidelberg, Germany
- Average daylight in August: 14h and 24min
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 August: 10h and 30min
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 August
Heidelberg, Germany
- Average sunshine days in August: 12.5 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 August
Heidelberg, Germany
- Average UV index in August: 5
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 August
Heidelberg, Germany
- Average cloud cover in August: 30
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 August
Heidelberg, Germany
- Average visibility in August: 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).
