Galle Weather in May
Average highs run from 29°C on May 1 to 29°C on May 31, and lows from 28°C to 27°C. Normal precipitation for the month is 214 mm over about 26 wet days.
May day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
May at a glance
- Average high
- 29°C
- Average low
- 28°C
- Precipitation
- 214 mm
- Reanalysis high
- 32°CMay 7, 1998
- Reanalysis low
- 26°CMay 21, 1995
- Daylight
- 12 h 20 min to 12 h 27 min
- Cloud cover
- 79%
- Humidity
- 83%
- Dew point
- 25°C
- Wind
- 22.0 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 |
|---|---|---|---|---|---|
| May 1 | 29°C | 28°C | 31°C 1998 | 26°C 1999 | 88% |
| May 2 | 29°C | 28°C | 30°C 1998 | 27°C 1999 | 87% |
| May 3 | 29°C | 28°C | 30°C 1998 | 27°C 1999 | 87% |
| May 4 | 29°C | 28°C | 30°C 2001 | 26°C 1999 | 87% |
| May 5 | 29°C | 28°C | 30°C 2001 | 27°C 1994 | 86% |
| May 6 | 29°C | 28°C | 31°C 1998 | 26°C 1994 | 86% |
| May 7 | 29°C | 28°C | 32°C 1998 | 26°C 1994 | 86% |
| May 8 | 29°C | 28°C | 31°C 2016 | 26°C 1994 | 84% |
| May 9 | 29°C | 28°C | 30°C 2004 | 26°C 1999 | 84% |
| May 10 | 29°C | 28°C | 30°C 1991 | 26°C 1999 | 84% |
| May 11 | 29°C | 28°C | 30°C 2004 | 26°C 2015 | 82% |
| May 12 | 29°C | 28°C | 31°C 2020 | 26°C 2000 | 83% |
| May 13 | 29°C | 28°C | 30°C 2010 | 26°C 1999 | 83% |
| May 14 | 29°C | 28°C | 30°C 1991 | 26°C 1999 | 82% |
| May 15 | 29°C | 28°C | 30°C 2020 | 26°C 1997 | 82% |
| May 16 | 29°C | 28°C | 30°C 2002 | 26°C 1999 | 82% |
| May 17 | 29°C | 28°C | 30°C 2020 | 26°C 1999 | 81% |
| May 18 | 29°C | 28°C | 30°C 1998 | 26°C 2018 | 81% |
| May 19 | 29°C | 28°C | 30°C 1998 | 26°C 2018 | 80% |
| May 20 | 29°C | 28°C | 30°C 1998 | 27°C 1994 | 81% |
| May 21 | 29°C | 28°C | 30°C 1998 | 26°C 1995 | 81% |
| May 22 | 29°C | 28°C | 30°C 1998 | 26°C 1995 | 82% |
| May 23 | 29°C | 28°C | 31°C 1998 | 26°C 1995 | 84% |
| May 24 | 29°C | 28°C | 30°C 1998 | 27°C 1995 | 84% |
| May 25 | 29°C | 28°C | 30°C 1998 | 27°C 2002 | 85% |
| May 26 | 29°C | 28°C | 31°C 1998 | 26°C 1995 | 86% |
| May 27 | 29°C | 28°C | 30°C 1991 | 26°C 1999 | 85% |
| May 28 | 29°C | 28°C | 29°C 2003 | 26°C 1999 | 85% |
| May 29 | 29°C | 27°C | 30°C 1998 | 26°C 1999 | 86% |
| May 30 | 29°C | 27°C | 30°C 1998 | 27°C 1992 | 87% |
| May 31 | 29°C | 27°C | 29°C 2020 | 27°C 1995 | 88% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+5:30).
- May 1
- sunrise 5:56 AM, sunset 6:16 PM
- May 31
- sunrise 5:53 AM, sunset 6:20 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 2026-09-27. Sun and moon: computed with the NOAA solar equations and Meeus.