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Best time to visit · South Africa
Knysna & Plettenberg Bay's weather is fairly even year-round: our comfort score only moves between 87 and 95 out of 100, with July scoring highest. March & April and October & November are good shoulder-season months.
Highs run from 67°F to 83°F across the year, and the yearly total is about 20.8 in (529 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 82°F28°C | 83°F28°C | 80°F27°C | 76°F24°C | 72°F22°C | 68°F20°C | 67°F20°C | 68°F20°C | 71°F22°C | 74°F23°C | 76°F25°C | 80°F26°C |
| Avg low | 65°F18°C | 65°F18°C | 63°F17°C | 59°F15°C | 57°F14°C | 53°F12°C | 52°F11°C | 52°F11°C | 54°F12°C | 57°F14°C | 59°F15°C | 62°F17°C |
| Rain | 1.5 in38 mm | 1.6 in40 mm | 2.2 in57 mm | 1.7 in44 mm | 1.3 in33 mm | 1.5 in38 mm | 1.5 in39 mm | 2.2 in56 mm | 1.7 in42 mm | 1.9 in48 mm | 2.2 in56 mm | 1.5 in38 mm |
| Humidity | 72% | 73% | 73% | 72% | 69% | 67% | 67% | 70% | 71% | 72% | 71% | 72% |
| Cloud | 48% | 47% | 46% | 50% | 51% | 48% | 46% | 48% | 51% | 54% | 53% | 49% |
| Comfort | 89 | 87 | 90 | 91 | 93 | 94 | 95 | 92 | 93 | 90 | 90 | 92 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~349 m (1,145 ft) to Knysna & Plettenberg Bay's ~11 m (36 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
Knysna & Plettenberg Bay is in the Southern Hemisphere, so the seasons run opposite to North America and Europe.
Peak warmth: highs of 80–83°F (26–28°C). It's the driest season, with only about 4.6 in (116 mm) of rain, 22% of the year's total. Lows bottom out around 62°F (17°C). December is among the best-scoring months (season average 89/100).
Temperatures slide from 80°F highs in March to 72°F by May. About 5.3 in (134 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 57°F (14°C). Comfort peaks here: May ranks with the year's best, and the season averages 91/100.
The cold peaks here: highs near 68°F (20°C), and nights reach 52°F (11°C). About 5.2 in (133 mm) of rain falls across these months, 25% of the year's total. June – August are among the best-scoring months (season average 94/100).
Temperatures climb through the season, from 71°F highs in September to 76°F by November. It's the wettest season, with about 5.7 in (146 mm) of rain, 28% of the year's total. Lows bottom out around 54°F (12°C). Comfort peaks here: September ranks with the year's best, and the season averages 91/100.
By comfort score: 12 Great. Tap a month for its own guide.
Knysna & Plettenberg Bay's weather is fairly even year-round: our comfort score only moves between 87 and 95 out of 100, with July scoring highest. March & April and October & November are good shoulder-season months.
March is the wettest month, averaging about 2.2 in (57 mm) of rain. May is the driest, with about 1.3 in (33 mm). The yearly total is around 20.8 in (529 mm).
July is the coldest, with average lows of 52°F (11°C) and highs of 67°F (20°C). The warmest is February, with average highs of 83°F (28°C).
Not very: summer (December – February) humidity averages 72%, and highs peak around 83°F (28°C), so heat matters more than mugginess.
The wettest three-month stretch is August – October, with about 5.7 in (146 mm) of rain combined. The driest stretch is May – July, with about 4.3 in (110 mm).
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