Plettenberg Bay — Sea temperature now
Long Garden Route family beach.
Mild water with a light chop and a light breeze — good swimming conditions.
Location
Plettenberg Bay on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Monthly sea temperature averages
Typical year-round water temperature, based on regional climatology.
Best time to swim in Plettenberg Bay
The sea in Plettenberg Bay peaks in February, when the water averages around 25°C.
The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.
On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
The coldest month is typically July at around 20°C, when cold-water swimmers dominate the coast.
Plettenberg Bay sits in the Southern Hemisphere, so the warmest sea coincides with the December–February summer and the coolest with July–August.
Plettenberg Bay sea temperature history
Long-term climatology for Plettenberg Bay shows an annual mean sea temperature of 22°C, ranging from 20°C in winter to 25°C at the summer peak.
The seasonal swing is roughly 5°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Plettenberg Bay, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Plettenberg Bay sea temperature: frequently asked questions
What is the warmest month to swim in Plettenberg Bay?
February is the warmest month in Plettenberg Bay, when the sea averages about 25°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Plettenberg Bay?
The coldest month in Plettenberg Bay is typically July, when the water averages around 20°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Plettenberg Bay without a wetsuit?
The main swimming season in Plettenberg Bay runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Plettenberg Bay?
Outside peak summer the water in Plettenberg Bay drops toward 20°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Plettenberg Bay?
The long-term annual mean sea temperature in Plettenberg Bay is about 22°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Plettenberg Bay?
The live reading at the top of this page shows the current sea temperature in Plettenberg Bay, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec
| Month | Sea | Comfort |
|---|---|---|
| Jan | 24°C | Warm |
| Feb ⭐ | 25°C | Warm |
| Mar | 24°C | Warm |
| Apr | 23°C | Warm |
| May | 22°C | Warm |
| Jun | 21°C | Pleasant |
| Jul | 20°C | Pleasant |
| Aug | 20°C | Pleasant |
| Sep | 21°C | Pleasant |
| Oct | 22°C | Warm |
| Nov | 23°C | Warm |
| Dec | 24°C | Warm |