SeasonMapPlettenberg Bay weather in September
South Africa
September in Plettenberg Bay: nice, a little rain, with clean air — a great time to visit.
#9 of 12 months in Plettenberg Bay · #729 of 1383 destinations to visit in September · comfort 79/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Plettenberg Bay in September
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Plettenberg Bay climate normals — September
| Daytime high | 19°C / 65°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 53°F | |
| Feels like (high) | 17°C / 63°F | |
| Sea temperature | 17°C / 63°F | 🧊 bracing |
| Rainfall | 63 mm / 2.5 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 10°C / 50°F | |
| Sunshine | 10 h/day | |
| Daylight | 11.9 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Plettenberg Bay in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsPlett Arts Festival, Term 3–4 (spring) break in South Africa(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Plettenberg Bay's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherPlettenberg Bay's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Plettenberg Bay in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Whale season
1 Jul – 15 Dec · usuallyThe official whale season runs July to December, with southern right whales through the middle of it and migrating humpbacks arriving with their calves from early November. Bryde's whales and dolphins are around the bay year-round. Source ↗
- Festival
Plett Arts Festival
25 Sep – 4 OctMajor festivalCrowdedTen days of music, fine art, jazz and land-art installations across town as the southern winter ends, opening with a Twilight Meander through the galleries. Source ↗
Nearby, and something's on
Within 300 km of Plettenberg Bay — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Plettenberg Bay?
Plettenberg Bay in September — FAQ
- Is September a good time to visit Plettenberg Bay?
- September in Plettenberg Bay: nice, a little rain, with clean air — a great time to visit. It ranks #9 of 12 months for Plettenberg Bay on SeasonMap's comfort score (79/100).
- What is the weather like in Plettenberg Bay in September?
- In September, Plettenberg Bay averages a daily high of 18.5°C and a low of 11.7°C, with about 63 mm of rain over roughly 8.4 rainy days.
- What is the air quality in Plettenberg Bay in September?
- Plettenberg Bay has a mean US Air Quality Index of about 31 in September.
Other months in Plettenberg Bay
Compare Plettenberg Bay in September
Warmer or cooler than Plettenberg Bay in September
Similar destinations in Southern Africa — September
Within 300 km: Knysna's Southern right whales around 15 Jun – 15 Nov, and Port Elizabeth's Whales in Algoa Bay around 1 Jun – 30 Nov.