Climate averages 1991–2020
Heidelberg, South Africa weather
in April.
A warm, moderately wet month: the 8th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in Heidelberg, South Africa: daytime highs average 22.0°C and nights cool to about 10.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 41 mm of rain on roughly 7 days, which makes April a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 29 min on an average April day.
The nearest other city in this atlas is Nigel (14 km away). In April its highs average 21.8°C, about as warm as Heidelberg, South Africa, with 41 mm of rain.
Among the 95 cities listed in South Africa, Heidelberg, South Africa ranks joint 66th of 95 for the warmest April highs and joint 33rd of 95 for the driest April (rainfall, lowest first). The mean April high of those 95 cities is 23.1°C; Heidelberg, South Africa is 1.1°C cooler than that mean.
From April to May, average highs fall by 2.1°C to 19.9°C, and monthly rainfall falls from 41 mm to 15 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Heidelberg, South Africa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.7°C15.4°C | 15.4°C | 130 | 16.0 | 13.614 h |
| February | 25.5°C15.2°C | 15.2°C | 100 | 12.8 | 13.013 h |
| March | 24.3°C13.6°C | 13.6°C | 84 | 11.4 | 12.312 h |
| April, selected | 22.0°C10.6°C | 10.6°C | 41 | 6.8 | 11.511 h |
| May | 19.9°C6.9°C | 6.9°C | 15 | 2.7 | 10.811 h |
| June | 17.6°C3.8°C | 3.8°C | 7.4 | 1.5 | 10.511 h |
| July | 17.8°C3.0°C | 3.0°C | 3.3 | 0.7 | 10.611 h |
| August | 21.0°C5.9°C | 5.9°C | 11 | 2.1 | 11.211 h |
| September | 25.1°C9.8°C | 9.8°C | 22 | 3.6 | 11.912 h |
| October | 25.9°C12.3°C | 12.3°C | 78 | 10.5 | 12.713 h |
| November | 25.5°C13.5°C | 13.5°C | 101 | 13.8 | 13.413 h |
| December | 25.7°C15.0°C | 15.0°C | 140 | 16.9 | 13.814 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
- Nigel in AprilSouth Africa · 14 kmHigh 21.8°C · Low 10.3°C · 41 mm rain
- Tokoza in AprilSouth Africa · 28 kmHigh 21.8°C · Low 10.4°C · 42 mm rain
- Brakpan in AprilSouth Africa · 30 kmHigh 21.4°C · Low 10.1°C · 42 mm rain
- Alberton in AprilSouth Africa · 35 kmHigh 21.7°C · Low 10.3°C · 45 mm rain
- Benoni in AprilSouth Africa · 35 kmHigh 21.4°C · Low 10.1°C · 42 mm rain
- Germiston in AprilSouth Africa · 38 kmHigh 21.4°C · Low 10.2°C · 42 mm rain
- Etwatwa in AprilSouth Africa · 43 kmHigh 21.7°C · Low 10.5°C · 41 mm rain
- Johannesburg in AprilSouth Africa · 46 kmHigh 20.4°C · Low 9.3°C · 45 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Heidelberg) is explained once on the Heidelberg, South Africa year overview and on the Sources, method and limits page.