- Newcastle ›
- Weather by month
Newcastle Weather by Month
Average temperatures, rainfall and humidity for Newcastle, South Africa, month by month, built from OpenWeather’s historical records. Use it to see what a typical Newcastle month looks like before you travel — then check the live Newcastle forecast for the days ahead.
Warmest month
February
27°C average high
Coolest month
July
3°C average low
Wettest month
December
251 mm of rain
Driest month
June
4 mm of rain
Average temperature and rainfall in Newcastle by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 27°C | 14°C | 4°C / 37°C | 214 mm | 73% | 7 km/h |
| February | 27°C | 14°C | 6°C / 39°C | 140 mm | 73% | 6 km/h |
| March | 26°C | 12°C | 1°C / 37°C | 76 mm | 71% | 6 km/h |
| April | 24°C | 10°C | -1°C / 31°C | 43 mm | 63% | 7 km/h |
| May | 22°C | 7°C | -3°C / 30°C | 12 mm | 52% | 7 km/h |
| June | 19°C | 4°C | -8°C / 27°C | 4 mm | 47% | 8 km/h |
| July | 19°C | 3°C | -10°C / 26°C | 8 mm | 45% | 9 km/h |
| August | 22°C | 6°C | -7°C / 31°C | 9 mm | 41% | 9 km/h |
| September | 26°C | 9°C | -4°C / 35°C | 22 mm | 43% | 9 km/h |
| October | 26°C | 11°C | -4°C / 37°C | 73 mm | 55% | 9 km/h |
| November | 26°C | 12°C | 0°C / 38°C | 194 mm | 63% | 9 km/h |
| December | 27°C | 14°C | 6°C / 39°C | 251 mm | 70% | 8 km/h |
Best time to visit Newcastle
The most comfortable time to visit Newcastle is generally April to May and August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around December, totalling about 1,046 mm a year.
Travellers who prefer heat should aim for February, when highs average 27°C. December is the month to avoid if rain would spoil your plans — it averages 251 mm, roughly 58× the rainfall of the driest month (June).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Newcastle forecast for what is happening now.