Portlaoise Weather in August
Average highs run from 19°C on August 1 to 18°C on August 31, and lows from 11°C to 10°C. Normal precipitation for the month is 93 mm over about 19 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
- 19°C
- Average low
- 11°C
- Precipitation
- 93 mm
- Reanalysis high
- 26°CAug 2, 1995
- Reanalysis low
- 5°CAug 30, 2010
- Daylight
- 15 h 36 min to 13 h 44 min
- Cloud cover
- 77%
- Humidity
- 86%
- Dew point
- 12°C
- Wind
- 16.6 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 | 19°C | 11°C | 25°C 1995 | 8°C 2015 | 65% |
| Aug 2 | 19°C | 11°C | 26°C 1995 | 9°C 1991 | 64% |
| Aug 3 | 19°C | 11°C | 24°C 1995 | 8°C 2020 | 62% |
| Aug 4 | 19°C | 11°C | 24°C 1995 | 8°C 1993 | 62% |
| Aug 5 | 19°C | 11°C | 26°C 2003 | 8°C 1993 | 61% |
| Aug 6 | 19°C | 11°C | 24°C 2003 | 8°C 1996 | 60% |
| Aug 7 | 19°C | 11°C | 26°C 2003 | 7°C 1996 | 60% |
| Aug 8 | 19°C | 11°C | 25°C 2003 | 7°C 2017 | 59% |
| Aug 9 | 19°C | 11°C | 24°C 2003 | 8°C 2018 | 59% |
| Aug 10 | 19°C | 11°C | 24°C 1997 | 7°C 2018 | 60% |
| Aug 11 | 19°C | 11°C | 24°C 2020 | 7°C 1993 | 59% |
| Aug 12 | 19°C | 11°C | 24°C 2020 | 7°C 2019 | 58% |
| Aug 13 | 19°C | 11°C | 24°C 2001 | 5°C 1993 | 58% |
| Aug 14 | 19°C | 11°C | 22°C 1995 | 7°C 1992 | 58% |
| Aug 15 | 19°C | 11°C | 23°C 1995 | 5°C 1993 | 59% |
| Aug 16 | 19°C | 11°C | 24°C 1995 | 7°C 1993 | 60% |
| Aug 17 | 19°C | 11°C | 25°C 1995 | 7°C 2011 | 61% |
| Aug 18 | 18°C | 11°C | 25°C 1995 | 6°C 1992 | 62% |
| Aug 19 | 18°C | 11°C | 25°C 1995 | 7°C 2014 | 61% |
| Aug 20 | 18°C | 10°C | 25°C 1995 | 6°C 2014 | 61% |
| Aug 21 | 18°C | 10°C | 23°C 1995 | 7°C 2014 | 60% |
| Aug 22 | 18°C | 10°C | 22°C 2003 | 6°C 2014 | 59% |
| Aug 23 | 18°C | 10°C | 23°C 2003 | 6°C 2014 | 57% |
| Aug 24 | 18°C | 10°C | 23°C 2003 | 6°C 2015 | 55% |
| Aug 25 | 18°C | 10°C | 22°C 2000 | 5°C 2015 | 54% |
| Aug 26 | 18°C | 10°C | 22°C 1995 | 6°C 2011 | 54% |
| Aug 27 | 18°C | 10°C | 22°C 1991 | 6°C 1998 | 52% |
| Aug 28 | 18°C | 10°C | 24°C 1991 | 7°C 1992 | 51% |
| Aug 29 | 18°C | 10°C | 24°C 1991 | 6°C 2010 | 50% |
| Aug 30 | 18°C | 10°C | 22°C 1991 | 5°C 2010 | 49% |
| Aug 31 | 18°C | 10°C | 22°C 1993 | 6°C 2010 | 48% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- August 1
- sunrise 5:47 AM, sunset 9:23 PM
- August 31
- sunrise 6:37 AM, sunset 8:21 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.