Vallam Weather in May

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

Average highs run from 38°C on May 1 to 36°C on May 31, and lows from 27°C to 26°C. Normal precipitation for the month is 71 mm over about 9 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: 37°C
Average low: 26°C
Precipitation: 71 mm
Reanalysis high: 43°CMay 2, 2019
Reanalysis low: 22°CMay 28, 2015
Daylight: 12 h 30 min to 12 h 43 min
Cloud cover: 60%
Humidity: 62%
Dew point: 22°C
Wind: 12.6 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	38°C	27°C	42°C 2006	24°C 1995	27%
May 2	37°C	27°C	43°C 2019	24°C 2001	27%
May 3	37°C	27°C	42°C 2019	24°C 2004	28%
May 4	37°C	27°C	42°C 2019	25°C 2004	29%
May 5	37°C	27°C	42°C 2019	25°C 2002	28%
May 6	37°C	27°C	41°C 2019	25°C 2004	29%
May 7	37°C	27°C	42°C 1993	24°C 1996	30%
May 8	37°C	27°C	42°C 1993	24°C 2004	30%
May 9	37°C	27°C	41°C 2017	24°C 2011	30%
May 10	37°C	26°C	42°C 1991	24°C 2004	31%
May 11	37°C	26°C	43°C 2013	24°C 1999	31%
May 12	37°C	26°C	42°C 1993	24°C 2015	31%
May 13	37°C	26°C	41°C 2019	24°C 2008	30%
May 14	37°C	26°C	42°C 2019	24°C 2015	28%
May 15	37°C	26°C	41°C 2019	25°C 1995	28%
May 16	37°C	26°C	41°C 2000	24°C 2004	27%
May 17	37°C	26°C	41°C 1996	24°C 1995	26%
May 18	37°C	26°C	41°C 2007	24°C 2004	25%
May 19	37°C	26°C	42°C 2013	24°C 1999	27%
May 20	37°C	26°C	42°C 1998	24°C 2004	28%
May 21	37°C	26°C	41°C 1997	24°C 2004	29%
May 22	37°C	26°C	42°C 2020	25°C 2004	29%
May 23	37°C	26°C	42°C 2020	25°C 1999	28%
May 24	37°C	26°C	42°C 1992	24°C 1999	28%
May 25	36°C	26°C	41°C 1991	24°C 1999	28%
May 26	36°C	26°C	41°C 1992	24°C 1995	28%
May 27	36°C	26°C	41°C 2010	24°C 2004	28%
May 28	36°C	26°C	40°C 2019	22°C 2015	29%
May 29	36°C	26°C	41°C 1997	24°C 2004	31%
May 30	36°C	26°C	41°C 1997	24°C 2001	32%
May 31	36°C	26°C	41°C 1997	24°C 2000	34%

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 6:26 PM
May 31: sunrise 5:50 AM, sunset 6:33 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.