Erawan Weather in May

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

Average highs run from 35°C on May 1 to 32°C on May 31, and lows from 24°C to 24°C. Normal precipitation for the month is 183 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: 24°C
Precipitation: 183 mm
Reanalysis high: 43°CMay 7, 2003
Reanalysis low: 18°CMay 15, 2006
Daylight: 12 h 45 min to 13 h 06 min
Cloud cover: 79%
Humidity: 72%
Dew point: 22°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
May 1	35°C	24°C	42°C 2019	20°C 2003	56%
May 2	35°C	24°C	43°C 2019	22°C 2008	59%
May 3	35°C	24°C	42°C 2019	22°C 2009	59%
May 4	35°C	24°C	39°C 1993	21°C 2009	61%
May 5	34°C	24°C	41°C 2003	20°C 2009	61%
May 6	34°C	24°C	42°C 2003	20°C 2004	62%
May 7	34°C	24°C	43°C 2003	22°C 2004	62%
May 8	34°C	24°C	41°C 2003	22°C 2007	63%
May 9	34°C	24°C	41°C 1992	21°C 2007	65%
May 10	34°C	24°C	40°C 1992	19°C 2007	67%
May 11	34°C	24°C	40°C 2016	19°C 1999	68%
May 12	34°C	24°C	39°C 1998	19°C 1999	69%
May 13	33°C	24°C	39°C 1997	19°C 1999	70%
May 14	33°C	24°C	39°C 1997	20°C 2006	70%
May 15	33°C	24°C	40°C 2013	18°C 2006	70%
May 16	33°C	24°C	41°C 2013	21°C 2006	71%
May 17	33°C	24°C	36°C 2020	21°C 2017	71%
May 18	33°C	24°C	37°C 2003	22°C 2017	73%
May 19	33°C	24°C	39°C 2003	21°C 2000	73%
May 20	33°C	24°C	39°C 2015	19°C 2000	74%
May 21	33°C	24°C	37°C 2010	20°C 2000	74%
May 22	33°C	24°C	39°C 2015	21°C 2000	76%
May 23	33°C	24°C	37°C 2020	21°C 2004	77%
May 24	32°C	24°C	37°C 2010	21°C 1997	77%
May 25	32°C	24°C	36°C 2007	22°C 1997	76%
May 26	32°C	24°C	37°C 2007	21°C 2002	76%
May 27	32°C	24°C	38°C 2003	21°C 2017	77%
May 28	32°C	24°C	39°C 2003	21°C 2017	77%
May 29	32°C	24°C	37°C 2015	21°C 2017	78%
May 30	32°C	24°C	38°C 1992	22°C 2011	79%
May 31	32°C	24°C	38°C 1992	22°C 2006	80%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

May 1: sunrise 5:47 AM, sunset 6:32 PM
May 31: sunrise 5:37 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.