Climate averages 1991–2020
Newcastle, South Africa weather
in January.
A warm, wet month: the joint 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Newcastle, South Africa: daytime highs average 26.1°C and nights cool to about 15.6°C. By daytime temperature it is the joint 2nd warmest of the 12 months.
Expect about 141 mm of rain on roughly 18 days, which makes January a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 41 min on an average January day.
The nearest other city in this atlas is Dundee, South Africa (54 km away). In January its highs average 26.4°C, about as warm as Newcastle, South Africa, with 151 mm of rain.
Among the 95 cities listed in South Africa, Newcastle, South Africa ranks joint 54th of 95 for the warmest January highs and 86th of 95 for the driest January (rainfall, lowest first). The mean January high of those 95 cities is 27.0°C; Newcastle, South Africa is 0.8°C cooler than that mean.
From January to February, average highs fall by 0.1°C to 26.1°C, and monthly rainfall falls from 141 mm to 102 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Dundee, South Africa in JanuarySouth Africa · 54 kmHigh 26.4°C · Low 15.9°C · 151 mm rain
- Vryheid in JanuarySouth Africa · 85 kmHigh 25.6°C · Low 15.7°C · 139 mm rain
- Ladysmith in JanuarySouth Africa · 90 kmHigh 28.0°C · Low 16.7°C · 172 mm rain
- Standerton in JanuarySouth Africa · 114 kmHigh 24.9°C · Low 14.6°C · 124 mm rain
- Piet Retief in JanuarySouth Africa · 121 kmHigh 24.8°C · Low 15.5°C · 144 mm rain
- Ermelo in JanuarySouth Africa · 136 kmHigh 23.3°C · Low 13.8°C · 143 mm rain
- Phuthaditjhaba in JanuarySouth Africa · 139 kmHigh 23.9°C · Low 13.7°C · 177 mm rain
- Bethal in JanuarySouth Africa · 152 kmHigh 24.1°C · Low 14.1°C · 132 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.