Mapastepec Weather in May

NASA POWER reanalysis for the half-degree grid cell around Mapastepec, 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 30°C on May 31, and lows from 26°C to 25°C. Normal precipitation for the month is 214 mm over about 25 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: 32°C
Average low: 26°C
Precipitation: 214 mm
Reanalysis high: 40°CMay 16, 1998
Reanalysis low: 22°CMay 2, 2010
Daylight: 12 h 42 min to 12 h 59 min
Cloud cover: 71%
Humidity: 73%
Dew point: 23°C
Wind: 9.7 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	26°C	37°C 1994	25°C 2010	51%
May 2	33°C	26°C	37°C 1994	22°C 2010	54%
May 3	33°C	26°C	38°C 2013	24°C 1992	56%
May 4	33°C	26°C	39°C 1997	24°C 1992	57%
May 5	33°C	26°C	39°C 1997	25°C 1995	60%
May 6	33°C	26°C	38°C 2005	24°C 2017	63%
May 7	33°C	26°C	37°C 2001	24°C 1995	65%
May 8	33°C	26°C	37°C 2010	22°C 1992	67%
May 9	33°C	26°C	37°C 2010	24°C 1999	69%
May 10	33°C	26°C	37°C 2020	24°C 1998	70%
May 11	33°C	26°C	37°C 2020	24°C 1998	72%
May 12	33°C	26°C	36°C 2007	24°C 2013	72%
May 13	33°C	26°C	37°C 2001	23°C 2014	73%
May 14	33°C	26°C	37°C 2013	24°C 2009	74%
May 15	32°C	26°C	38°C 2013	25°C 2009	75%
May 16	32°C	26°C	40°C 1998	24°C 2014	77%
May 17	32°C	26°C	39°C 1998	24°C 2014	77%
May 18	32°C	26°C	39°C 1998	24°C 1995	78%
May 19	32°C	26°C	39°C 1998	24°C 2016	79%
May 20	32°C	26°C	37°C 1994	24°C 2012	80%
May 21	32°C	26°C	37°C 1992	24°C 2019	82%
May 22	32°C	26°C	36°C 1992	24°C 2017	83%
May 23	31°C	25°C	37°C 1997	24°C 2000	84%
May 24	31°C	25°C	37°C 1999	23°C 2000	86%
May 25	31°C	25°C	34°C 1999	24°C 2001	86%
May 26	31°C	25°C	37°C 2002	24°C 2012	86%
May 27	31°C	25°C	36°C 1993	24°C 2012	88%
May 28	31°C	25°C	36°C 1993	24°C 1994	89%
May 29	30°C	25°C	37°C 1994	23°C 2000	90%
May 30	30°C	25°C	33°C 2008	23°C 2000	91%
May 31	30°C	25°C	34°C 1993	24°C 2001	92%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

May 1: sunrise 5:48 AM, sunset 6:30 PM
May 31: sunrise 5:40 AM, sunset 6:39 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.