Climate averages 1991–2020
Newcastle, South Africa weather
in September.
A warm, moderately wet month: the 7th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Newcastle, South Africa: daytime highs average 24.7°C and nights cool to about 9.7°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 40 mm of rain on roughly 7 days, which makes September a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 54 min on an average September day.
The nearest other city in this atlas is Dundee, South Africa (54 km away). In September its highs average 24.8°C, about as warm as Newcastle, South Africa, with 35 mm of rain.
Among the 95 cities listed in South Africa, Newcastle, South Africa ranks joint 44th of 95 for the warmest September highs and joint 77th of 95 for the driest September (rainfall, lowest first). The mean September high of those 95 cities is 24.3°C; Newcastle, South Africa is 0.5°C warmer than that mean.
From September to October, average highs rise by 0.4°C to 25.1°C, and monthly rainfall rises from 40 mm to 94 mm.
The annual picture
September 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
Newcastle, South Africa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.1°C15.6°C | 15.6°C | 141 | 17.6 | 13.714 h |
| February | 26.1°C15.6°C | 15.6°C | 102 | 13.3 | 13.113 h |
| March | 24.9°C14.0°C | 14.0°C | 99 | 11.8 | 12.312 h |
| April | 22.6°C11.1°C | 11.1°C | 45 | 7.4 | 11.411 h |
| May | 20.7°C7.4°C | 7.4°C | 17 | 2.9 | 10.811 h |
| June | 18.4°C4.4°C | 4.4°C | 10 | 2.2 | 10.410 h |
| July | 18.4°C3.8°C | 3.8°C | 13 | 2.1 | 10.611 h |
| August | 21.3°C6.3°C | 6.3°C | 22 | 3.9 | 11.111 h |
| September, selected | 24.7°C9.7°C | 9.7°C | 40 | 7.0 | 11.912 h |
| October | 25.1°C11.8°C | 11.8°C | 94 | 13.7 | 12.713 h |
| November | 25.6°C13.4°C | 13.4°C | 120 | 16.5 | 13.513 h |
| December | 26.2°C15.0°C | 15.0°C | 155 | 18.9 | 13.914 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
September in nearby cities
- Dundee, South Africa in SeptemberSouth Africa · 54 kmHigh 24.8°C · Low 10.4°C · 35 mm rain
- Vryheid in SeptemberSouth Africa · 85 kmHigh 24.2°C · Low 10.1°C · 39 mm rain
- Ladysmith in SeptemberSouth Africa · 90 kmHigh 25.7°C · Low 10.0°C · 39 mm rain
- Standerton in SeptemberSouth Africa · 114 kmHigh 24.4°C · Low 8.9°C · 23 mm rain
- Piet Retief in SeptemberSouth Africa · 121 kmHigh 23.5°C · Low 10.1°C · 38 mm rain
- Ermelo in SeptemberSouth Africa · 136 kmHigh 23.2°C · Low 8.8°C · 26 mm rain
- Phuthaditjhaba in SeptemberSouth Africa · 139 kmHigh 21.6°C · Low 6.8°C · 32 mm rain
- Bethal in SeptemberSouth Africa · 152 kmHigh 23.9°C · Low 8.9°C · 23 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 Newcastle) is explained once on the Newcastle, South Africa year overview and on the Sources, method and limits page.