Climate averages 1991–2020
Delmas 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 Delmas: daytime highs average 25.3°C and nights cool to about 15.0°C. By daytime temperature it is the joint 2nd warmest of the 12 months.
Expect about 128 mm of rain on roughly 16 days, which makes January a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average January day.
The nearest other city in this atlas is Etwatwa (23 km away). In January its highs average 25.2°C, about as warm as Delmas, with 123 mm of rain.
Among the 95 cities listed in South Africa, Delmas ranks joint 74th of 95 for the warmest January highs and 70th of 95 for the driest January (rainfall, lowest first). The mean January high of those 95 cities is 27.0°C; Delmas is 1.7°C cooler than that mean.
From January to February, average highs stay level at 25.3°C, and monthly rainfall falls from 128 mm to 105 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
Delmas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 25.3°C15.0°C | 15.0°C | 128 | 16.2 | 13.614 h |
| February | 25.3°C14.8°C | 14.8°C | 105 | 13.0 | 13.013 h |
| March | 24.2°C13.3°C | 13.3°C | 89 | 11.2 | 12.312 h |
| April | 21.9°C10.3°C | 10.3°C | 40 | 6.6 | 11.511 h |
| May | 20.0°C6.7°C | 6.7°C | 15 | 2.6 | 10.911 h |
| June | 17.6°C3.7°C | 3.7°C | 6.6 | 1.1 | 10.511 h |
| July | 17.7°C3.1°C | 3.1°C | 4.2 | 0.7 | 10.711 h |
| August | 20.9°C5.8°C | 5.8°C | 11 | 2.1 | 11.211 h |
| September | 24.9°C9.6°C | 9.6°C | 24 | 3.4 | 11.912 h |
| October | 25.5°C11.8°C | 11.8°C | 83 | 10.8 | 12.713 h |
| November | 25.0°C13.2°C | 13.2°C | 104 | 14.0 | 13.413 h |
| December | 25.2°C14.6°C | 14.6°C | 138 | 17.4 | 13.714 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
- Etwatwa in JanuarySouth Africa · 23 kmHigh 25.2°C · Low 15.1°C · 123 mm rain
- Brakpan in JanuarySouth Africa · 33 kmHigh 25.0°C · Low 14.8°C · 127 mm rain
- Benoni in JanuarySouth Africa · 36 kmHigh 25.0°C · Low 14.8°C · 127 mm rain
- Nigel in JanuarySouth Africa · 38 kmHigh 25.3°C · Low 15.1°C · 135 mm rain
- Thembisa in JanuarySouth Africa · 49 kmHigh 25.6°C · Low 15.4°C · 110 mm rain
- Heidelberg, South Africa in JanuarySouth Africa · 51 kmHigh 25.7°C · Low 15.4°C · 130 mm rain
- Germiston in JanuarySouth Africa · 52 kmHigh 25.2°C · Low 15.0°C · 127 mm rain
- eMbalenhle in JanuarySouth Africa · 58 kmHigh 24.9°C · Low 14.7°C · 139 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 Delmas) is explained once on the Delmas year overview and on the Sources, method and limits page.