Aarau Weather in August
Average highs run from 24°C on August 1 to 21°C on August 31, and lows from 14°C to 11°C. Normal precipitation for the month is 115 mm over about 16 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
- 23°C
- Average low
- 13°C
- Precipitation
- 115 mm
- Reanalysis high
- 32°CAug 19, 2012
- Reanalysis low
- 4°CAug 28, 1998
- Daylight
- 14 h 56 min to 13 h 25 min
- Cloud cover
- 60%
- Humidity
- 78%
- Dew point
- 14°C
- Wind
- 8.6 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 | 24°C | 14°C | 30°C 2017 | 8°C 2007 | 52% |
| Aug 2 | 24°C | 14°C | 31°C 2013 | 10°C 2002 | 52% |
| Aug 3 | 24°C | 14°C | 29°C 2018 | 10°C 2006 | 53% |
| Aug 4 | 23°C | 14°C | 31°C 2018 | 10°C 2006 | 53% |
| Aug 5 | 23°C | 14°C | 31°C 2003 | 8°C 2020 | 51% |
| Aug 6 | 23°C | 14°C | 30°C 2015 | 9°C 2010 | 52% |
| Aug 7 | 23°C | 14°C | 32°C 2015 | 9°C 2005 | 52% |
| Aug 8 | 23°C | 14°C | 30°C 2003 | 7°C 2005 | 52% |
| Aug 9 | 23°C | 14°C | 30°C 2003 | 7°C 2005 | 52% |
| Aug 10 | 23°C | 14°C | 32°C 2003 | 8°C 2011 | 51% |
| Aug 11 | 23°C | 14°C | 30°C 1998 | 7°C 2017 | 51% |
| Aug 12 | 23°C | 14°C | 31°C 1998 | 9°C 2001 | 51% |
| Aug 13 | 23°C | 14°C | 32°C 2003 | 9°C 2006 | 51% |
| Aug 14 | 23°C | 14°C | 28°C 2003 | 9°C 2013 | 50% |
| Aug 15 | 23°C | 13°C | 29°C 2001 | 7°C 1994 | 48% |
| Aug 16 | 23°C | 13°C | 28°C 2009 | 8°C 1994 | 48% |
| Aug 17 | 23°C | 13°C | 27°C 1998 | 8°C 2014 | 48% |
| Aug 18 | 23°C | 13°C | 28°C 2019 | 9°C 2015 | 48% |
| Aug 19 | 23°C | 13°C | 32°C 2012 | 8°C 1991 | 47% |
| Aug 20 | 23°C | 13°C | 30°C 2000 | 8°C 1991 | 47% |
| Aug 21 | 23°C | 13°C | 30°C 2020 | 8°C 1999 | 46% |
| Aug 22 | 23°C | 13°C | 31°C 2011 | 8°C 1999 | 46% |
| Aug 23 | 22°C | 13°C | 30°C 2011 | 9°C 1999 | 46% |
| Aug 24 | 22°C | 13°C | 28°C 2011 | 8°C 2014 | 47% |
| Aug 25 | 22°C | 13°C | 28°C 2016 | 8°C 2018 | 48% |
| Aug 26 | 22°C | 12°C | 29°C 2016 | 6°C 2018 | 46% |
| Aug 27 | 22°C | 12°C | 29°C 2016 | 7°C 1998 | 46% |
| Aug 28 | 21°C | 12°C | 29°C 1992 | 4°C 1998 | 45% |
| Aug 29 | 21°C | 12°C | 28°C 2015 | 4°C 1993 | 44% |
| Aug 30 | 21°C | 12°C | 29°C 2015 | 6°C 1998 | 45% |
| Aug 31 | 21°C | 11°C | 28°C 2015 | 5°C 1995 | 45% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- August 1
- sunrise 6:06 AM, sunset 9:02 PM
- August 31
- sunrise 6:45 AM, sunset 8:10 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.