Ko Samui Weather in April
Average highs run from 29°C on April 1 to 30°C on April 30, and lows from 28°C to 28°C. Normal precipitation for the month is 90 mm over about 15 wet days.
April day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
April at a glance
- Average high
- 30°C
- Average low
- 28°C
- Precipitation
- 90 mm
- Reanalysis high
- 33°CApr 28, 2016
- Reanalysis low
- 26°CApr 2, 1991
- Daylight
- 12 h 13 min to 12 h 27 min
- Cloud cover
- 63%
- Humidity
- 77%
- Dew point
- 24°C
- Wind
- 11.9 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 |
|---|---|---|---|---|---|
| Apr 1 | 29°C | 28°C | 31°C 2020 | 26°C 2011 | 40% |
| Apr 2 | 29°C | 28°C | 31°C 1992 | 26°C 1991 | 40% |
| Apr 3 | 29°C | 28°C | 32°C 1992 | 26°C 2011 | 40% |
| Apr 4 | 29°C | 28°C | 32°C 2013 | 27°C 2011 | 39% |
| Apr 5 | 29°C | 28°C | 31°C 2013 | 27°C 2011 | 38% |
| Apr 6 | 30°C | 28°C | 32°C 2013 | 26°C 2017 | 39% |
| Apr 7 | 30°C | 28°C | 32°C 2013 | 27°C 2011 | 40% |
| Apr 8 | 30°C | 28°C | 31°C 2013 | 26°C 2011 | 40% |
| Apr 9 | 30°C | 28°C | 31°C 2020 | 27°C 2011 | 40% |
| Apr 10 | 30°C | 28°C | 31°C 1996 | 27°C 1994 | 40% |
| Apr 11 | 30°C | 28°C | 33°C 2016 | 27°C 2011 | 40% |
| Apr 12 | 30°C | 28°C | 33°C 2016 | 26°C 1997 | 40% |
| Apr 13 | 30°C | 28°C | 32°C 1998 | 26°C 1997 | 40% |
| Apr 14 | 30°C | 28°C | 32°C 1998 | 27°C 2011 | 39% |
| Apr 15 | 30°C | 28°C | 32°C 1998 | 27°C 1993 | 40% |
| Apr 16 | 30°C | 28°C | 32°C 1998 | 27°C 1999 | 40% |
| Apr 17 | 30°C | 28°C | 32°C 1998 | 27°C 1993 | 41% |
| Apr 18 | 30°C | 28°C | 32°C 2019 | 27°C 1993 | 42% |
| Apr 19 | 30°C | 28°C | 31°C 2010 | 27°C 1999 | 43% |
| Apr 20 | 30°C | 28°C | 32°C 2019 | 27°C 1999 | 45% |
| Apr 21 | 30°C | 28°C | 32°C 2010 | 27°C 1991 | 46% |
| Apr 22 | 30°C | 28°C | 32°C 1992 | 27°C 1999 | 48% |
| Apr 23 | 30°C | 28°C | 32°C 2016 | 27°C 1991 | 50% |
| Apr 24 | 30°C | 28°C | 32°C 2014 | 27°C 1991 | 52% |
| Apr 25 | 30°C | 28°C | 32°C 2014 | 27°C 1999 | 53% |
| Apr 26 | 30°C | 28°C | 32°C 2016 | 27°C 1999 | 54% |
| Apr 27 | 30°C | 28°C | 33°C 2016 | 27°C 1999 | 57% |
| Apr 28 | 30°C | 28°C | 33°C 2016 | 26°C 1999 | 60% |
| Apr 29 | 30°C | 28°C | 32°C 1998 | 27°C 1999 | 62% |
| Apr 30 | 30°C | 28°C | 32°C 2010 | 27°C 1999 | 65% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+7).
- April 1
- sunrise 6:18 AM, sunset 6:31 PM
- April 30
- sunrise 6:04 AM, sunset 6:31 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.