Trincomalee Weather in May

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

Average highs run from 32°C on May 1 to 32°C on May 31, and lows from 27°C to 27°C. Normal precipitation for the month is 93 mm over about 12 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: 27°C
Precipitation: 93 mm
Reanalysis high: 38°CMay 16, 1996
Reanalysis low: 25°CMay 15, 1997
Daylight: 12 h 26 min to 12 h 35 min
Cloud cover: 60%
Humidity: 77%
Dew point: 25°C
Wind: 21.2 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	32°C	27°C	35°C 1991	26°C 1999	53%
May 2	32°C	27°C	35°C 1996	26°C 2012	53%
May 3	32°C	27°C	37°C 1996	26°C 2012	52%
May 4	32°C	27°C	35°C 1991	25°C 2012	50%
May 5	32°C	27°C	36°C 1991	26°C 2012	48%
May 6	32°C	27°C	36°C 1991	26°C 1999	47%
May 7	32°C	27°C	36°C 1991	26°C 1999	47%
May 8	32°C	27°C	37°C 1991	26°C 1994	46%
May 9	32°C	27°C	36°C 1991	25°C 1994	45%
May 10	32°C	27°C	36°C 1996	26°C 2011	44%
May 11	32°C	27°C	37°C 1996	25°C 2011	42%
May 12	32°C	27°C	37°C 1996	25°C 2011	41%
May 13	32°C	27°C	36°C 1996	25°C 2011	40%
May 14	32°C	27°C	36°C 1996	25°C 2011	37%
May 15	32°C	27°C	36°C 2019	25°C 1997	35%
May 16	32°C	27°C	38°C 1996	26°C 1999	33%
May 17	32°C	27°C	37°C 1996	26°C 1993	31%
May 18	32°C	27°C	37°C 1996	26°C 2018	30%
May 19	32°C	27°C	36°C 1996	26°C 2018	30%
May 20	32°C	27°C	37°C 1996	26°C 1993	29%
May 21	32°C	27°C	37°C 1996	26°C 1993	28%
May 22	32°C	27°C	37°C 2000	26°C 2018	28%
May 23	32°C	27°C	37°C 1996	26°C 1993	26%
May 24	32°C	27°C	36°C 1996	26°C 1999	25%
May 25	32°C	27°C	35°C 2019	26°C 1993	24%
May 26	32°C	27°C	36°C 2019	26°C 1999	24%
May 27	32°C	27°C	36°C 2019	26°C 1994	24%
May 28	32°C	27°C	35°C 2019	26°C 2004	24%
May 29	32°C	27°C	35°C 2019	26°C 1994	24%
May 30	32°C	27°C	35°C 1997	26°C 1999	25%
May 31	32°C	27°C	35°C 1997	26°C 2004	26%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+5:30).

May 1: sunrise 5:49 AM, sunset 6:15 PM
May 31: sunrise 5:45 AM, sunset 6:20 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.