Oeiras Weather in August
Average highs run from 35°C on August 1 to 37°C on August 31, and lows from 21°C to 22°C. Normal precipitation for the month is 0 mm over about 0 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
- 36°C
- Average low
- 21°C
- Precipitation
- 0 mm
- Reanalysis high
- 39°CAug 28, 2013
- Reanalysis low
- 18°CAug 7, 2001
- Daylight
- 11 h 48 min to 11 h 58 min
- Cloud cover
- 21%
- Humidity
- 42%
- Dew point
- 13°C
- Wind
- 20.5 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 | 35°C | 21°C | 36°C 2019 | 19°C 2008 | 1% |
| Aug 2 | 35°C | 21°C | 36°C 2018 | 19°C 2001 | 1% |
| Aug 3 | 35°C | 21°C | 37°C 2002 | 19°C 2001 | 1% |
| Aug 4 | 35°C | 21°C | 37°C 2017 | 19°C 2001 | 1% |
| Aug 5 | 35°C | 21°C | 37°C 2017 | 19°C 2012 | 1% |
| Aug 6 | 35°C | 21°C | 38°C 2018 | 18°C 2001 | 1% |
| Aug 7 | 35°C | 21°C | 37°C 2018 | 18°C 2001 | 1% |
| Aug 8 | 35°C | 21°C | 37°C 1991 | 19°C 2005 | 0% |
| Aug 9 | 35°C | 21°C | 37°C 2017 | 19°C 2002 | 0% |
| Aug 10 | 35°C | 21°C | 37°C 2017 | 19°C 2007 | 0% |
| Aug 11 | 35°C | 21°C | 38°C 2016 | 19°C 2010 | 0% |
| Aug 12 | 35°C | 21°C | 38°C 2018 | 19°C 2010 | 0% |
| Aug 13 | 35°C | 21°C | 38°C 2018 | 19°C 2015 | 0% |
| Aug 14 | 35°C | 21°C | 37°C 2016 | 19°C 2004 | 0% |
| Aug 15 | 36°C | 21°C | 38°C 2013 | 19°C 1991 | 0% |
| Aug 16 | 36°C | 21°C | 38°C 2016 | 19°C 2007 | 0% |
| Aug 17 | 36°C | 21°C | 39°C 2016 | 19°C 1991 | 0% |
| Aug 18 | 36°C | 21°C | 39°C 2016 | 19°C 2007 | 0% |
| Aug 19 | 36°C | 21°C | 37°C 2017 | 18°C 2010 | 0% |
| Aug 20 | 36°C | 21°C | 38°C 1993 | 18°C 2010 | 0% |
| Aug 21 | 36°C | 22°C | 38°C 1993 | 19°C 2010 | 0% |
| Aug 22 | 36°C | 22°C | 38°C 2016 | 20°C 1996 | 0% |
| Aug 23 | 36°C | 22°C | 38°C 2015 | 19°C 1999 | 0% |
| Aug 24 | 36°C | 22°C | 37°C 2004 | 19°C 2002 | 0% |
| Aug 25 | 36°C | 22°C | 38°C 2015 | 20°C 2012 | 0% |
| Aug 26 | 36°C | 22°C | 38°C 1997 | 20°C 2008 | 0% |
| Aug 27 | 36°C | 22°C | 39°C 2015 | 20°C 2019 | 0% |
| Aug 28 | 36°C | 22°C | 39°C 2013 | 20°C 1999 | 0% |
| Aug 29 | 36°C | 22°C | 39°C 2014 | 20°C 2007 | 1% |
| Aug 30 | 37°C | 22°C | 39°C 2012 | 20°C 2007 | 1% |
| Aug 31 | 37°C | 22°C | 38°C 2004 | 20°C 2018 | 1% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- August 1
- sunrise 6:01 AM, sunset 5:49 PM
- August 31
- sunrise 5:50 AM, sunset 5:48 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.