Climate averages 1991–2020

Stellenbosch weather
in June.

A mild, wet month: the 10th warmest and the wettest of the year.

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

Average high 17.3°C Daytime mean, June
Average low 8.6°C Night-time mean, June
Rainfall 138 mm 11 days with ≥1 mm
Daylight 10 h Sunrise to sunset, per day
Every month in Stellenbosch · average highYear overview

June is a mild month in Stellenbosch: daytime highs average 17.3°C and nights cool to about 8.6°C. By daytime temperature it is the 10th warmest of the 12 months.

Expect about 138 mm of rain on roughly 11 days, which makes June a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 56 min on an average June day.

The nearest other city in this atlas is Somerset West (17 km away). In June its highs average 17.7°C, about as warm as Stellenbosch, with 138 mm of rain.

Among the 95 cities listed in South Africa, Stellenbosch ranks joint 69th of 95 for the warmest June highs and joint 93rd of 95 for the driest June (rainfall, lowest first). The mean June high of those 95 cities is 18.5°C; Stellenbosch is 1.2°C cooler than that mean.

From June to July, average highs fall by 0.4°C to 17.0°C, and monthly rainfall falls from 138 mm to 122 mm.

The annual picture

June 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. 5101520253035 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 1500

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

Every month, side by side

Stellenbosch climate table

1991–2020
Monthly climate averages for Stellenbosch, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 28.7°C17.0°C17.0°C213.414.114 h
February 29.2°C17.4°C17.4°C183.213.313 h
March 27.6°C16.4°C16.4°C213.512.312 h
April 24.2°C13.8°C13.8°C565.711.311 h
May 20.6°C11.4°C11.4°C909.010.410 h
June, selected 17.3°C8.6°C8.6°C13811.09.910 h
July 17.0°C7.7°C7.7°C12210.310.110 h
August 17.2°C8.0°C8.0°C10510.910.911 h
September 19.0°C9.4°C9.4°C688.811.912 h
October 22.0°C11.7°C11.7°C456.612.913 h
November 24.1°C13.3°C13.3°C415.813.914 h
December 26.9°C15.7°C15.7°C244.214.414 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

June in nearby cities

Distance from Stellenbosch

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

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