Climate averages 1991–2020

Atlantis weather
in April.

A warm, fairly dry month: the 6th warmest and the 7th driest of the year. Meets the pleasant-weather rule

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

Average high 22.6°C Daytime mean, April
Average low 12.5°C Night-time mean, April
Rainfall 31 mm 4 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Atlantis · average highYear overview

April is a warm month in Atlantis: daytime highs average 22.6°C and nights cool to about 12.5°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 31 mm of rain on roughly 4 days, which makes April a fairly dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 17 min on an average April day.

The nearest other city in this atlas is Cape Town (40 km away). In April its highs average 22.0°C, 0.6°C cooler than Atlantis, with 43 mm of rain.

Among the 95 cities listed in South Africa, Atlantis ranks joint 56th of 95 for the warmest April highs and 5th of 95 for the driest April (rainfall, lowest first). The mean April high of those 95 cities is 23.1°C; Atlantis is 0.5°C cooler than that mean.

From April to May, average highs fall by 3.2°C to 19.4°C, and monthly rainfall rises from 31 mm to 47 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. 51015202530 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 1000

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

Every month, side by side

Atlantis climate table

1991–2020
Monthly climate averages for Atlantis, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 26.9°C16.1°C16.1°C9.82.214.114 h
February 27.1°C16.3°C16.3°C9.81.913.313 h
March 25.6°C15.0°C15.0°C112.212.312 h
April, selected 22.6°C12.5°C12.5°C314.211.311 h
May 19.4°C10.3°C10.3°C476.510.410 h
June 16.5°C7.9°C7.9°C769.410.010 h
July 16.1°C7.1°C7.1°C698.210.210 h
August 16.2°C7.5°C7.5°C598.410.911 h
September 17.9°C9.0°C9.0°C366.311.912 h
October 21.0°C11.2°C11.2°C234.112.913 h
November 23.0°C12.8°C12.8°C214.013.814 h
December 25.4°C14.9°C14.9°C122.914.314 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 Atlantis

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