Vientiane Weather in July
Average highs run from 31°C on July 1 to 31°C on July 31, and lows from 24°C to 24°C. Normal precipitation for the month is 214 mm over about 25 wet days.
July day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
July at a glance
- Average high
- 31°C
- Average low
- 24°C
- Precipitation
- 214 mm
- Reanalysis high
- 41°CJul 3, 2015
- Reanalysis low
- 22°CJul 7, 2009
- Daylight
- 13 h 11 min to 12 h 56 min
- Cloud cover
- 92%
- Humidity
- 82%
- Dew point
- 24°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 |
|---|---|---|---|---|---|
| Jul 1 | 31°C | 24°C | 41°C 2015 | 22°C 2003 | 78% |
| Jul 2 | 31°C | 24°C | 41°C 2015 | 23°C 1993 | 78% |
| Jul 3 | 31°C | 24°C | 41°C 2015 | 23°C 2011 | 78% |
| Jul 4 | 32°C | 24°C | 36°C 2015 | 22°C 2008 | 79% |
| Jul 5 | 32°C | 24°C | 37°C 2010 | 22°C 2017 | 78% |
| Jul 6 | 31°C | 24°C | 37°C 2015 | 22°C 2009 | 78% |
| Jul 7 | 31°C | 24°C | 36°C 2010 | 22°C 2009 | 78% |
| Jul 8 | 31°C | 24°C | 37°C 2010 | 22°C 2004 | 78% |
| Jul 9 | 31°C | 24°C | 38°C 2015 | 22°C 1995 | 78% |
| Jul 10 | 31°C | 24°C | 37°C 2015 | 23°C 2001 | 77% |
| Jul 11 | 31°C | 24°C | 38°C 2015 | 22°C 2002 | 77% |
| Jul 12 | 31°C | 24°C | 36°C 2007 | 22°C 2004 | 77% |
| Jul 13 | 31°C | 24°C | 37°C 2007 | 23°C 2000 | 78% |
| Jul 14 | 31°C | 24°C | 38°C 2007 | 23°C 2005 | 79% |
| Jul 15 | 31°C | 24°C | 35°C 2007 | 23°C 1994 | 80% |
| Jul 16 | 31°C | 24°C | 35°C 2007 | 22°C 2004 | 80% |
| Jul 17 | 31°C | 24°C | 35°C 2007 | 23°C 2004 | 81% |
| Jul 18 | 31°C | 24°C | 37°C 2003 | 22°C 1994 | 81% |
| Jul 19 | 31°C | 24°C | 37°C 2003 | 22°C 2000 | 81% |
| Jul 20 | 31°C | 24°C | 33°C 2006 | 22°C 2000 | 82% |
| Jul 21 | 31°C | 24°C | 34°C 2012 | 22°C 2002 | 82% |
| Jul 22 | 31°C | 24°C | 34°C 2012 | 23°C 2002 | 83% |
| Jul 23 | 31°C | 24°C | 34°C 2002 | 23°C 2002 | 84% |
| Jul 24 | 31°C | 24°C | 33°C 2020 | 22°C 2012 | 86% |
| Jul 25 | 31°C | 24°C | 37°C 2007 | 22°C 2012 | 87% |
| Jul 26 | 31°C | 24°C | 37°C 2007 | 23°C 1996 | 87% |
| Jul 27 | 31°C | 24°C | 34°C 2007 | 22°C 2000 | 87% |
| Jul 28 | 31°C | 24°C | 35°C 2007 | 22°C 2012 | 88% |
| Jul 29 | 31°C | 24°C | 35°C 2007 | 23°C 2015 | 87% |
| Jul 30 | 31°C | 24°C | 33°C 2007 | 22°C 2013 | 86% |
| Jul 31 | 31°C | 24°C | 32°C 2002 | 22°C 2012 | 86% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+7).
- July 1
- sunrise 5:38 AM, sunset 6:49 PM
- July 31
- sunrise 5:48 AM, sunset 6:44 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.