Climate averages 1991–2020

Heshan weather
in April.

A warm, very wet month: the 7th warmest and the 9th driest of the year.

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

Average high 22.0°C Daytime mean, April
Average low 13.8°C Night-time mean, April
Rainfall 183 mm 16 days with ≥1 mm
Daylight 13 h Sunrise to sunset, per day
Every month in Heshan · average highYear overview

April is a warm month in Heshan: daytime highs average 22.0°C and nights cool to about 13.8°C. By daytime temperature it is the 7th warmest of the 12 months.

Expect about 183 mm of rain on roughly 16 days, which makes April a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 50 min on an average April day.

The nearest other city in this atlas is Changsha (74 km away). In April its highs average 22.4°C, about as warm as Heshan, with 236 mm of rain.

Among the 884 cities listed in China, Heshan ranks joint 349th of 884 for the warmest April highs and joint 802nd of 884 for the driest April (rainfall, lowest first). The mean April high of those 884 cities is 20.6°C; Heshan is 1.4°C warmer than that mean.

From April to May, average highs rise by 4.2°C to 26.2°C, and monthly rainfall rises from 183 mm to 225 mm.

The annual picture

April 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

Heshan climate table

1991–2020
Monthly climate averages for Heshan, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 9.0°C2.2°C2.2°C7511.110.511 h
February 11.7°C4.4°C4.4°C8811.911.211 h
March 16.1°C8.2°C8.2°C15615.812.012 h
April, selected 22.0°C13.8°C13.8°C18316.112.813 h
May 26.2°C18.4°C18.4°C22515.513.614 h
June 29.0°C22.5°C22.5°C29516.713.914 h
July 32.0°C25.6°C25.6°C21615.213.814 h
August 31.5°C25.0°C25.0°C15415.013.213 h
September 27.7°C20.8°C20.8°C9210.212.412 h
October 22.7°C15.3°C15.3°C758.711.512 h
November 17.0°C9.6°C9.6°C769.310.811 h
December 11.4°C4.2°C4.2°C518.310.410 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

April in nearby cities

Distance from Heshan

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 Heshan) is explained once on the Heshan year overview and on the Sources, method and limits page.