Heidelberg Weather in August
Average highs run from 20°C on August 1 to 24°C on August 31, and lows from 3°C to 6°C. Normal precipitation for the month is 9 mm over about 3 wet days.
August day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
August at a glance
- Average high
- 22°C
- Average low
- 4°C
- Precipitation
- 9 mm
- Reanalysis high
- 30°CAug 29, 2015
- Reanalysis low
- -6°CAug 21, 2003
- Daylight
- 10 h 54 min to 11 h 33 min
- Cloud cover
- 25%
- Humidity
- 46%
- Dew point
- -1°C
- Wind
- 15.1 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 20°C | 3°C | 24°C 2018 | -4°C 2015 | 4% |
| Aug 2 | 20°C | 3°C | 24°C 1993 | -4°C 2012 | 4% |
| Aug 3 | 20°C | 3°C | 24°C 2007 | -1°C 1997 | 4% |
| Aug 4 | 20°C | 3°C | 25°C 2019 | -2°C 2016 | 4% |
| Aug 5 | 20°C | 3°C | 26°C 2019 | -1°C 2006 | 4% |
| Aug 6 | 20°C | 3°C | 26°C 2019 | -3°C 2006 | 4% |
| Aug 7 | 20°C | 3°C | 26°C 2005 | -3°C 1995 | 4% |
| Aug 8 | 21°C | 3°C | 27°C 2019 | -3°C 1996 | 5% |
| Aug 9 | 21°C | 3°C | 25°C 2019 | -4°C 1992 | 5% |
| Aug 10 | 21°C | 4°C | 24°C 1995 | -4°C 2010 | 5% |
| Aug 11 | 21°C | 4°C | 24°C 2019 | -1°C 2018 | 5% |
| Aug 12 | 21°C | 4°C | 27°C 2019 | -1°C 2012 | 4% |
| Aug 13 | 21°C | 4°C | 27°C 2018 | -4°C 2012 | 3% |
| Aug 14 | 21°C | 4°C | 26°C 2019 | -1°C 2009 | 4% |
| Aug 15 | 22°C | 4°C | 26°C 2018 | -1°C 2003 | 4% |
| Aug 16 | 22°C | 4°C | 27°C 2018 | 0°C 2007 | 4% |
| Aug 17 | 22°C | 4°C | 27°C 2018 | -1°C 2011 | 4% |
| Aug 18 | 22°C | 4°C | 26°C 2015 | 0°C 2017 | 4% |
| Aug 19 | 22°C | 5°C | 27°C 1998 | -3°C 2020 | 4% |
| Aug 20 | 22°C | 5°C | 28°C 2012 | -2°C 2003 | 4% |
| Aug 21 | 22°C | 5°C | 28°C 2001 | -6°C 2003 | 5% |
| Aug 22 | 23°C | 5°C | 28°C 2007 | -3°C 2003 | 5% |
| Aug 23 | 23°C | 5°C | 28°C 2012 | -1°C 2014 | 5% |
| Aug 24 | 23°C | 5°C | 29°C 2012 | -2°C 1995 | 5% |
| Aug 25 | 23°C | 5°C | 28°C 2012 | -1°C 2014 | 5% |
| Aug 26 | 23°C | 6°C | 28°C 2005 | -1°C 1998 | 6% |
| Aug 27 | 23°C | 6°C | 27°C 2015 | -2°C 2003 | 6% |
| Aug 28 | 24°C | 6°C | 29°C 1991 | 0°C 1996 | 6% |
| Aug 29 | 24°C | 6°C | 30°C 2015 | 1°C 2014 | 6% |
| Aug 30 | 24°C | 6°C | 29°C 2015 | -4°C 2014 | 7% |
| Aug 31 | 24°C | 6°C | 28°C 2007 | -3°C 2006 | 7% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- August 1
- sunrise 6:46 AM, sunset 5:40 PM
- August 31
- sunrise 6:21 AM, sunset 5:54 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.