Stellenbosch, Franschhoek and Paarl — a Mediterranean climate in the southern hemisphere, so the seasons run inverted. Daytime highs in the Cape Winelands run from about 15 °C in July to 28 °C in February, an annual range of roughly 13 °C.
Measured against a city trip, the conditions hold up March to May and August to December. March is the most consistent single month: highs near 26 °C, nights around 15 °C, and roughly 28 mm of rain across the month.
The binding constraint here is rainfall and temperature — that is what rules months out, not any composite judgement. Rainfall is sharply seasonal: July averages 128 mm against 20 mm in February, so the wet season is the real planning constraint rather than heat or cold. January is the weakest month on these criteria.
Month by month
| Month | High °C | Low °C | Precip mm | Wet days |
|---|---|---|---|---|
| January | 27 | 15 | 25 | 4.2 |
| February | 28 | 16 | 20 | 3.7 |
| March | 26 | 15 | 28 | 4.8 |
| April | 23 | 12 | 52 | 6.1 |
| May | 19 | 9 | 96 | 8.9 |
| June | 16 | 7 | 125 | 11.0 |
| July | 15 | 6 | 128 | 10.4 |
| August | 16 | 6 | 101 | 11.1 |
| September | 18 | 8 | 72 | 9.2 |
| October | 20 | 10 | 56 | 7.5 |
| November | 23 | 12 | 41 | 6.5 |
| December | 25 | 14 | 32 | 5.4 |
Ticked rows are months where every hard requirement for a city trip is met across at least half the month.
Open Cape Winelands on the map →Nearby regions
Figures are 30-year climatology sampled at Stellenbosch, Franschhoek, Paarl, Wellington and Somerset West, averaged across those locations, from ERA5-Land reanalysis fitted with a harmonic seasonal cycle and a trend term, evaluated for 2026. Sampling named towns rather than averaging the whole region avoids blending valley and mountain conditions into a figure true of neither. Cells are about 0.08° wide, from ERA5-Land's 0.1° grid, which is itself driven by a 0.25° (~28 km) atmospheric reanalysis — so individual valleys, sheltered bays and single summits are not resolved. In steep terrain read these as conditions for the wider area rather than for one village. They describe typical conditions, not a forecast. Read how the climatology is built.