Cha-am Weather in May

NASA POWER reanalysis for the half-degree grid cell around Cha-am, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 33°C on May 1 to 32°C on May 31, and lows from 27°C to 27°C. Normal precipitation for the month is 127 mm over about 22 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: 33°C
Average low: 27°C
Precipitation: 127 mm
Reanalysis high: 38°CMay 11, 2016
Reanalysis low: 24°CMay 1, 1996
Daylight: 12 h 35 min to 12 h 50 min
Cloud cover: 81%
Humidity: 75%
Dew point: 24°C
Wind: 11.5 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
May 1	33°C	27°C	38°C 1998	24°C 1996	53%
May 2	33°C	27°C	37°C 2019	26°C 2018	54%
May 3	33°C	27°C	37°C 1998	26°C 1996	55%
May 4	33°C	27°C	36°C 1998	26°C 1999	56%
May 5	33°C	27°C	37°C 1997	25°C 2008	58%
May 6	33°C	27°C	38°C 2016	26°C 2008	59%
May 7	33°C	27°C	37°C 1997	26°C 1999	60%
May 8	33°C	27°C	37°C 1992	26°C 2008	61%
May 9	33°C	27°C	37°C 2016	26°C 2012	63%
May 10	33°C	27°C	37°C 2016	26°C 1999	65%
May 11	33°C	27°C	38°C 2016	25°C 1996	68%
May 12	33°C	27°C	36°C 1997	25°C 2008	70%
May 13	33°C	27°C	35°C 2020	25°C 2008	70%
May 14	33°C	27°C	36°C 2013	25°C 2008	72%
May 15	33°C	27°C	36°C 2013	25°C 2011	74%
May 16	32°C	27°C	36°C 2013	25°C 2007	75%
May 17	32°C	27°C	35°C 2015	26°C 2004	77%
May 18	32°C	27°C	35°C 2015	25°C 2004	79%
May 19	32°C	27°C	35°C 2015	25°C 2007	80%
May 20	32°C	27°C	36°C 2014	25°C 2011	81%
May 21	32°C	27°C	36°C 2014	25°C 2007	81%
May 22	32°C	27°C	35°C 1995	25°C 2007	82%
May 23	32°C	27°C	35°C 1998	26°C 2000	83%
May 24	32°C	27°C	35°C 2014	26°C 1999	84%
May 25	32°C	27°C	34°C 1991	26°C 1999	83%
May 26	32°C	27°C	34°C 2014	25°C 1999	83%
May 27	32°C	27°C	35°C 1992	25°C 2002	84%
May 28	32°C	27°C	35°C 2016	25°C 1999	85%
May 29	32°C	27°C	36°C 2014	25°C 2007	86%
May 30	32°C	27°C	36°C 1992	26°C 1999	86%
May 31	32°C	27°C	37°C 1992	26°C 2008	85%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+7).

May 1: sunrise 6:00 AM, sunset 6:35 PM
May 31: sunrise 5:53 AM, sunset 6:43 PM

Every day of May: sun and moon

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.