Jiangnan Weather in May

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

Average highs run from 26°C on May 1 to 29°C on May 31, and lows from 16°C to 19°C. Normal precipitation for the month is 146 mm over about 19 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: 28°C
Average low: 17°C
Precipitation: 146 mm
Reanalysis high: 38°CMay 3, 1997
Reanalysis low: 9°CMay 4, 2004
Daylight: 13 h 19 min to 13 h 55 min
Cloud cover: 80%
Humidity: 73%
Dew point: 17°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	26°C	16°C	36°C 1994	10°C 1991	50%
May 2	27°C	16°C	36°C 1997	9°C 1991	51%
May 3	27°C	16°C	38°C 1997	11°C 2004	50%
May 4	27°C	16°C	33°C 1992	9°C 2004	52%
May 5	27°C	17°C	33°C 1998	12°C 2004	53%
May 6	27°C	17°C	33°C 1998	11°C 2014	54%
May 7	27°C	17°C	34°C 2011	11°C 1991	56%
May 8	27°C	17°C	35°C 1995	11°C 1991	57%
May 9	27°C	17°C	36°C 1995	11°C 1991	56%
May 10	27°C	17°C	37°C 1993	13°C 1996	56%
May 11	27°C	17°C	37°C 1995	12°C 2015	54%
May 12	27°C	17°C	37°C 1994	13°C 2007	54%
May 13	27°C	17°C	35°C 2000	12°C 2006	55%
May 14	27°C	17°C	36°C 2000	12°C 2006	56%
May 15	27°C	17°C	33°C 2000	13°C 2016	55%
May 16	28°C	17°C	34°C 2018	14°C 2016	54%
May 17	28°C	17°C	33°C 1994	14°C 2002	54%
May 18	28°C	18°C	36°C 2011	14°C 1992	55%
May 19	28°C	18°C	36°C 2011	13°C 1992	55%
May 20	28°C	18°C	34°C 1998	14°C 2009	56%
May 21	28°C	18°C	34°C 2007	14°C 1995	55%
May 22	28°C	18°C	35°C 2001	13°C 1995	54%
May 23	28°C	18°C	35°C 1991	12°C 2011	52%
May 24	28°C	18°C	34°C 1993	15°C 1998	54%
May 25	28°C	18°C	34°C 1995	14°C 1998	55%
May 26	28°C	18°C	34°C 1995	14°C 1999	56%
May 27	28°C	18°C	35°C 1995	14°C 1999	56%
May 28	28°C	19°C	35°C 1995	15°C 2016	55%
May 29	28°C	19°C	35°C 1995	15°C 2013	55%
May 30	29°C	19°C	35°C 1995	15°C 2001	57%
May 31	29°C	19°C	34°C 1994	15°C 2004	57%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+8).

May 1: sunrise 6:10 AM, sunset 7:29 PM
May 31: sunrise 5:52 AM, sunset 7:47 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.