Petrolina Weather in May

NASA POWER reanalysis for the half-degree grid cell around Petrolina, 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 33°C on May 31, and lows from 21°C to 20°C. Normal precipitation for the month is 16 mm over about 3 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: 21°C
Precipitation: 16 mm
Reanalysis high: 38°CMay 1, 1998
Reanalysis low: 17°CMay 31, 2006
Daylight: 11 h 46 min to 11 h 37 min
Cloud cover: 52%
Humidity: 62%
Dew point: 17°C
Wind: 19.8 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	21°C	38°C 1998	20°C 2014	16%
May 2	33°C	21°C	38°C 1998	19°C 1996	15%
May 3	33°C	21°C	37°C 1998	18°C 2004	14%
May 4	33°C	21°C	37°C 1998	18°C 2004	14%
May 5	33°C	21°C	37°C 1998	19°C 2008	13%
May 6	33°C	21°C	37°C 1998	19°C 2014	12%
May 7	33°C	21°C	37°C 2001	19°C 2014	11%
May 8	33°C	21°C	36°C 2001	18°C 1996	11%
May 9	33°C	21°C	36°C 2017	18°C 2012	11%
May 10	33°C	21°C	36°C 2010	19°C 2018	11%
May 11	33°C	21°C	36°C 2010	19°C 1998	10%
May 12	33°C	21°C	36°C 2001	19°C 1997	10%
May 13	33°C	21°C	36°C 2001	17°C 1997	10%
May 14	33°C	21°C	36°C 2001	18°C 2014	10%
May 15	33°C	21°C	36°C 1993	18°C 2008	11%
May 16	33°C	21°C	37°C 2017	18°C 2000	11%
May 17	33°C	21°C	36°C 2017	19°C 2003	12%
May 18	33°C	21°C	36°C 2001	18°C 2006	12%
May 19	33°C	21°C	36°C 2002	18°C 2006	12%
May 20	33°C	21°C	36°C 2018	18°C 2006	12%
May 21	33°C	21°C	36°C 2018	18°C 1997	12%
May 22	33°C	21°C	35°C 2002	18°C 1997	13%
May 23	33°C	21°C	36°C 2010	18°C 2006	13%
May 24	33°C	21°C	36°C 2019	18°C 1997	12%
May 25	33°C	20°C	36°C 2019	17°C 2000	12%
May 26	33°C	20°C	36°C 2019	17°C 2004	11%
May 27	33°C	20°C	35°C 1998	18°C 2014	10%
May 28	33°C	20°C	36°C 1998	18°C 1996	10%
May 29	33°C	20°C	35°C 1998	18°C 1999	10%
May 30	33°C	20°C	36°C 1998	18°C 2017	10%
May 31	33°C	20°C	35°C 1998	17°C 2006	9%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

May 1: sunrise 5:46 AM, sunset 5:32 PM
May 31: sunrise 5:51 AM, sunset 5:28 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.