Climate averages 1991–2020

Shenjiamen weather
in May.

A mild, wet month: the 6th warmest and the 11th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 20.3°C Daytime mean, May
Average low 17.6°C Night-time mean, May
Rainfall 150 mm 12 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Shenjiamen · average highYear overview

May is a mild month in Shenjiamen: daytime highs average 20.3°C and nights cool to about 17.6°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 150 mm of rain on roughly 12 days, which makes May a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 38 min on an average May day.

The nearest other city in this atlas is Zhoushan (10 km away). In May its highs average 20.7°C, about as warm as Shenjiamen, with 150 mm of rain.

Among the 884 cities listed in China, Shenjiamen ranks joint 799th of 884 for the warmest May highs and joint 592nd of 884 for the driest May (rainfall, lowest first). The mean May high of those 884 cities is 25.2°C; Shenjiamen is 4.9°C cooler than that mean.

From May to June, average highs rise by 3.7°C to 24.1°C, and monthly rainfall rises from 150 mm to 263 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 05101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 3000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Shenjiamen climate table

1991–2020
Monthly climate averages for Shenjiamen, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 8.9°C6.0°C6.0°C8811.010.510 h
February 9.2°C6.2°C6.2°C8610.311.111 h
March 11.6°C8.6°C8.6°C14213.712.012 h
April 15.5°C12.5°C12.5°C13112.712.913 h
May, selected 20.3°C17.6°C17.6°C15012.013.614 h
June 24.1°C21.8°C21.8°C26314.514.014 h
July 27.7°C25.6°C25.6°C1006.813.914 h
August 28.5°C26.3°C26.3°C1099.813.213 h
September 26.0°C23.9°C23.9°C14111.412.412 h
October 21.9°C19.8°C19.8°C877.511.511 h
November 17.5°C14.8°C14.8°C859.510.711 h
December 12.0°C9.0°C9.0°C819.110.310 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Shenjiamen

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Shenjiamen) is explained once on the Shenjiamen year overview and on the Sources, method and limits page.

Zhoushan lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.