Climate - Plettenberg Bay (South Africa)

The climate of Plettenberg Bay is subtropical oceanic, with very mild winters and warm summers. The rains are quite abundant (at least compared to South African averages) because the ocean currents, which blow all year round, meet the mountains to the north.
The city is located in South Africa, on the south coast, to the west of Port Elizabeth.
Even though the climate is mild, sometimes the wind from the interior can bring very hot days, more often in spring and autumn. In the worst moments the temperature can reach 38/40 °C (100/104 °F). In the evening, however, the temperature returns cool with the wind from the sea.
Even though the winter is mild, there can be some cold and windy days. On the coldest nights of the year, the temperature can drop to around freezing. At other times, the warm wind from the northern mountains can blow in this season as well, so much so that the temperature can reach 30 °C (86 °F) even in winter.

The average temperature of the coldest month (August) is of 15.6 °C (60.0 °F), that of the warmest month (February) is of 21.4 °C (70.5 °F). Here are the average temperatures.
Precipitation amounts to 915 millimeters (36 inches) per year: so, it is at an intermediate level. It ranges from 65 mm (2.6 in) in the driest months (July, December) to 100 mm (3.9 in) in the wettest one (August). Here is the average precipitation.
The sea temperature ranges from 18 °C (18 °F) in July, August, September to 22.5 °C (22.5 °F) in February. Here are the average sea temperatures.

Plettenberg Bay - Weather by month

Based on the period 1998-2020
(January - February - March - April - May - June - July - August - September - October - November - December)

In January, the average temperature is of 21.4 °C (70 °F), with a minimum of 17.7 °C (63.8 °F) and a maximum of 25.1 °C (77.1 °F).
On the coldest nights of the month, the temperature usually drops to around 14 °C (57 °F). However, in January 1999, it dropped to 13 °C (55.4 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F). However, in January 2017, it reached 36.9 °C (98.4 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 10 days.
The average humidity is 77%.
The average wind speed is 12 kph (8 kph).
The average sea temperature is of 22 °C (72 °F).

In February, the warmest month of the year, the average temperature is of 21.4 °C (71 °F), with a minimum of 17.6 °C (63.7 °F) and a maximum of 25.2 °C (77.4 °F).
On the coldest nights of the month, the temperature usually drops to around 14 °C (57.5 °F). However, in February 2015, it dropped to 11.8 °C (53.2 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in February 2020, it reached 37.2 °C (99 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 9 days.
The average humidity is 79%.
The average wind speed is 12 kph (7 kph).
The average sea temperature is of 22.5 °C (72 °F).

In March, the average temperature is of 20.4 °C (69 °F), with a minimum of 16.6 °C (61.9 °F) and a maximum of 24.3 °C (75.7 °F).
On the coldest nights of the month, the temperature usually drops to around 13 °C (55.5 °F). However, in March 2020, it dropped to 11.2 °C (52.2 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in March 2015, it reached 35.6 °C (96.1 °F).
Precipitation amounts to 80 mm (3.1 in), distributed over 10 days.
The average humidity is 78%.
The average wind speed is 11 kph (7 kph).
The average sea temperature is of 22 °C (71 °F).

In April, the average temperature is of 18.7 °C (66 °F), with a minimum of 14.7 °C (58.5 °F) and a maximum of 22.8 °C (73 °F).
On the coldest nights of the month, the temperature usually drops to around 10.5 °C (50.5 °F). However, in April 2015, it dropped to 7.7 °C (45.9 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91 °F). However, in April 2020, it reached 40.2 °C (104.4 °F).
Precipitation amounts to 80 mm (3.1 in), distributed over 8 days.
The average humidity is 75%.
The average wind speed is 10 kph (6 kph).
The average sea temperature is of 20.5 °C (69 °F).

In May, the average temperature is of 17.8 °C (64 °F), with a minimum of 13.3 °C (55.9 °F) and a maximum of 22.3 °C (72.1 °F).
On the coldest nights of the month, the temperature usually drops to around 9.5 °C (49 °F). However, in May 2000, it dropped to 8 °C (46.4 °F).
On the warmest days of the month, the temperature usually reaches around 31 °C (88 °F). However, in May 2018, it reached 35.1 °C (95.2 °F).
Precipitation amounts to 75 mm (3 in), distributed over 8 days.
The average humidity is 70%.
The average wind speed is 11 kph (7 kph).
The average sea temperature is of 20 °C (67.5 °F).

In June, the average temperature is of 16.4 °C (62 °F), with a minimum of 11.7 °C (53 °F) and a maximum of 21.1 °C (70 °F).
On the coldest nights of the month, the temperature usually drops to around 8 °C (46.5 °F). However, in June 2017, it dropped to 6.1 °C (43 °F).
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85 °F). However, in June 2017, it reached 33.5 °C (92.3 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 9 days.
The average humidity is 64%.
The average wind speed is 11 kph (7 kph).
The average sea temperature is of 19 °C (66 °F).

In July, the average temperature is of 15.8 °C (60 °F), with a minimum of 11.2 °C (52.2 °F) and a maximum of 20.4 °C (68.7 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (44.5 °F). However, in July 2000, it dropped to 6 °C (42.8 °F).
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85.5 °F). However, in July 2017, it reached 32.3 °C (90.1 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 8 days.
The average humidity is 66%.
The average wind speed is 12 kph (7 kph).
The average sea temperature is of 18 °C (65 °F).

In August, the coldest month of the year, the average temperature is of 15.6 °C (60 °F), with a minimum of 11.4 °C (52.5 °F) and a maximum of 19.7 °C (67.5 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (45 °F). However, in August 2020, it dropped to 4.1 °C (39.4 °F).
On the warmest days of the month, the temperature usually reaches around 30 °C (85.5 °F). However, in August 1999, it reached 34 °C (93.2 °F).
Precipitation amounts to 100 mm (3.9 in), distributed over 10 days.
The average humidity is 71%.
The average wind speed is 12 kph (7 kph).
The average sea temperature is of 18 °C (64.5 °F).

In September, the average temperature is of 16.0 °C (61 °F), with a minimum of 12 °C (53.7 °F) and a maximum of 20 °C (67.9 °F).
On the coldest nights of the month, the temperature usually drops to around 7.5 °C (46 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F). However, in September 2000, it reached 38 °C (100.4 °F).
Precipitation amounts to 75 mm (3 in), distributed over 10 days.
The average humidity is 73%.
The average wind speed is 13 kph (8 kph).
The average sea temperature is of 18 °C (65 °F).

In October, the average temperature is of 17.5 °C (64 °F), with a minimum of 13.7 °C (56.7 °F) and a maximum of 21.3 °C (70.4 °F).
On the coldest nights of the month, the temperature usually drops to around 10 °C (50 °F). However, in October 2016, it dropped to 8.7 °C (47.7 °F).
On the warmest days of the month, the temperature usually reaches around 33.5 °C (92 °F). However, in October 2018, it reached 39 °C (102.2 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 12 days.
The average humidity is 74%.
The average wind speed is 13 kph (8 kph).
The average sea temperature is of 18.5 °C (65.5 °F).

In November, the average temperature is of 18.3 °C (65 °F), with a minimum of 14.8 °C (58.6 °F) and a maximum of 21.8 °C (71.3 °F).
On the coldest nights of the month, the temperature usually drops to around 11 °C (52 °F). However, in November 1998, it dropped to 8 °C (46.4 °F).
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85 °F). However, in November 2020, it reached 36.7 °C (98.1 °F).
Precipitation amounts to 75 mm (3 in), distributed over 10 days.
The average humidity is 76%.
The average wind speed is 13 kph (8 kph).
The average sea temperature is of 19.5 °C (67.5 °F).

In December, the average temperature is of 20.3 °C (69 °F), with a minimum of 16.7 °C (62.1 °F) and a maximum of 23.9 °C (75.1 °F).
On the coldest nights of the month, the temperature usually drops to around 12 °C (53.5 °F).
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85 °F). However, in December 2017, it reached 35.9 °C (96.6 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 10 days.
The average humidity is 76%.
The average wind speed is 12 kph (8 kph).
The average sea temperature is of 21 °C (70 °F).