Roseau Weather in August
Average highs run from 28°C on August 1 to 29°C on August 31, and lows from 27°C to 27°C. Normal precipitation for the month is 167 mm over about 25 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
- 28°C
- Average low
- 27°C
- Precipitation
- 167 mm
- Reanalysis high
- 30°CAug 12, 1995
- Reanalysis low
- 26°CAug 12, 1994
- Daylight
- 12 h 48 min to 12 h 25 min
- Cloud cover
- 48%
- Humidity
- 80%
- Dew point
- 24°C
- Wind
- 24.5 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 | 28°C | 27°C | 29°C 2005 | 26°C 1992 | 79% |
| Aug 2 | 28°C | 27°C | 29°C 2020 | 26°C 1993 | 80% |
| Aug 3 | 28°C | 27°C | 30°C 2020 | 26°C 1994 | 80% |
| Aug 4 | 28°C | 27°C | 29°C 2010 | 26°C 1994 | 81% |
| Aug 5 | 28°C | 27°C | 29°C 2020 | 26°C 1991 | 82% |
| Aug 6 | 28°C | 27°C | 29°C 2016 | 26°C 1991 | 82% |
| Aug 7 | 28°C | 27°C | 29°C 2020 | 26°C 1996 | 81% |
| Aug 8 | 28°C | 27°C | 29°C 2020 | 26°C 1996 | 82% |
| Aug 9 | 28°C | 27°C | 29°C 2020 | 26°C 1996 | 82% |
| Aug 10 | 28°C | 27°C | 29°C 2016 | 26°C 1991 | 83% |
| Aug 11 | 28°C | 27°C | 29°C 1995 | 26°C 1994 | 83% |
| Aug 12 | 28°C | 27°C | 30°C 1995 | 26°C 1994 | 83% |
| Aug 13 | 28°C | 27°C | 29°C 2005 | 26°C 1992 | 84% |
| Aug 14 | 28°C | 27°C | 30°C 2020 | 26°C 1994 | 84% |
| Aug 15 | 28°C | 27°C | 30°C 2020 | 26°C 1993 | 83% |
| Aug 16 | 29°C | 27°C | 29°C 2020 | 26°C 1993 | 83% |
| Aug 17 | 29°C | 27°C | 29°C 1998 | 26°C 1993 | 83% |
| Aug 18 | 29°C | 27°C | 29°C 2008 | 26°C 1996 | 83% |
| Aug 19 | 29°C | 27°C | 30°C 2020 | 26°C 1991 | 83% |
| Aug 20 | 29°C | 27°C | 30°C 2009 | 26°C 1991 | 83% |
| Aug 21 | 29°C | 27°C | 30°C 2020 | 26°C 1993 | 83% |
| Aug 22 | 29°C | 27°C | 29°C 2010 | 26°C 1993 | 82% |
| Aug 23 | 29°C | 27°C | 30°C 2016 | 26°C 2012 | 81% |
| Aug 24 | 29°C | 27°C | 30°C 2010 | 26°C 1991 | 81% |
| Aug 25 | 29°C | 27°C | 30°C 2020 | 26°C 1996 | 81% |
| Aug 26 | 29°C | 27°C | 30°C 2010 | 26°C 1996 | 80% |
| Aug 27 | 29°C | 27°C | 30°C 2020 | 26°C 2007 | 79% |
| Aug 28 | 29°C | 27°C | 30°C 2020 | 26°C 2014 | 78% |
| Aug 29 | 29°C | 27°C | 30°C 2020 | 26°C 1994 | 77% |
| Aug 30 | 29°C | 27°C | 30°C 2010 | 26°C 1992 | 77% |
| Aug 31 | 29°C | 27°C | 30°C 2017 | 26°C 1993 | 77% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (AST).
- August 1
- sunrise 5:48 AM, sunset 6:36 PM
- August 31
- sunrise 5:53 AM, sunset 6:18 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.