Sea weather in Knysna in South Africa All the beach weather in Knysna

All the essential weather information for enjoying the beach in Knysna in South Africa, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Knysna over the next 7 days?

Discover the best moment to go to the beach in Knysna in South Africa this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Knysna. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Friday 5 December 202567°F to 68°Frecommended
Saturday 6 December 202561°F to 67°Frecommended
Sunday 7 December 202561°F to 68°Fdiscouraged
Monday 8 December 202565°F to 68°Frecommended
Tuesday 9 December 202565°F to 68°Frecommended
Wednesday 10 December 202565°F to 68°Fdiscouraged
Thursday 11 December 202565°F to 68°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Knysna

Sea weather on Friday 5 December 2025

On Friday 5 December 2025, the sun will rise at 05:09 and will set at 19:29 on the beach(es) of Knysna. The outside temperature will be a high of 68°F t and a low of 67°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 9.9mph km/h (with gusts up to 14.3mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature19°C (66°F)19°C (66°F)19°C (66°F)20°C (68°F)20°C (68°F)20°C (68°F)19°C (67°F)19°C (66°F)
Perceived temperature19°C (66°F)19°C (66°F)19°C (66°F)20°C (68°F)20°C (68°F)20°C (68°F)19°C (67°F)19°C (66°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%87%84%76%73%69%75%83%
Barometric pressure1015 hPa1014 hPa1015 hPa1016 hPa1015 hPa1015 hPa1015 hPa1017 hPa
Cloud cover8%13%8%0%43%67%32%98%
Heat index19°C (66°F)19°C (66°F)19°C (66°F)20°C (68°F)20°C (68°F)20°C (68°F)19°C (67°F)19°C (66°F)
Dew point17°C (62°F)17°C (62°F)16°C (61°F)16°C (60°F)15°C (59°F)14°C (58°F)15°C (59°F)16°C (61°F)
Wind
Speed14km/h (9mph)15km/h (9mph)16km/h (10mph)16km/h (10mph)14km/h (9mph)16km/h (10mph)10km/h (6mph)9km/h (6mph)
Gusts22km/h (14mph)22km/h (14mph)23km/h (14mph)21km/h (13mph)19km/h (12mph)22km/h (13mph)15km/h (9mph)14km/h (9mph)
Direction 276°
W
264°
W
280°
W
257°
WSW
215°
SW
199°
SSW
216°
SW
294°
WNW
Wind chill19°C (66°F)19°C (66°F)19°C (66°F)20°C (68°F)20°C (68°F)20°C (68°F)19°C (67°F)19°C (66°F)
Waves
Height1.7m (5.6ft)1.6m (5.3ft)1.5m (5.0ft)1.4m (4.8ft)1.4m (4.5ft)1.3m (4.2ft)1.2m (4.0ft)1.2m (3.9ft)
Direction 194°
SSW
193°
SSW
192°
SSW
190°
S
189°
S
189°
S
190°
S
194°
SSW
Period9.4 sec.9.4 sec.9.3 sec.9.3 sec.9.3 sec.9.3 sec.9.3 sec.9.2 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)1.1m (3.6ft)
Sea water temperature
Water temperature18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)

Sea weather on Saturday 6 December 2025

On Saturday 6 December 2025, the sun will rise at 05:09 and will set at 19:30 on the beach(es) of Knysna. The outside temperature will be a high of 67°F t and a low of 61°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 11.2mph km/h (with gusts up to 15.5mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature19°C (66°F)18°C (65°F)19°C (65°F)19°C (66°F)19°C (66°F)19°C (65°F)19°C (66°F)19°C (65°F)
Perceived temperature19°C (66°F)18°C (65°F)19°C (65°F)19°C (66°F)19°C (66°F)19°C (65°F)19°C (66°F)19°C (65°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%84%75%70%66%63%62%71%
Barometric pressure1017 hPa1016 hPa1017 hPa1018 hPa1019 hPa1017 hPa1018 hPa1019 hPa
Cloud cover100%100%100%91%82%8%28%7%
Heat index19°C (66°F)18°C (65°F)19°C (65°F)19°C (66°F)19°C (66°F)19°C (65°F)19°C (66°F)19°C (65°F)
Dew point16°C (61°F)16°C (60°F)14°C (57°F)13°C (56°F)12°C (54°F)11°C (53°F)12°C (53°F)13°C (56°F)
Wind
Speed1km/h (1mph)18km/h (11mph)10km/h (6mph)10km/h (6mph)8km/h (5mph)8km/h (5mph)9km/h (6mph)5km/h (3mph)
Gusts2km/h (1mph)25km/h (15mph)15km/h (9mph)13km/h (8mph)11km/h (7mph)12km/h (7mph)14km/h (9mph)8km/h (5mph)
Direction 90°
E
148°
SSE
152°
SSE
159°
SSE
144°
SE
149°
SSE
154°
SSE
73°
ENE
Wind chill19°C (66°F)18°C (65°F)19°C (65°F)19°C (66°F)19°C (66°F)19°C (65°F)19°C (66°F)19°C (65°F)
Waves
Height1.3m (4.4ft)1.6m (5.3ft)1.7m (5.6ft)1.7m (5.6ft)1.6m (5.3ft)1.5m (5.1ft)1.5m (4.8ft)1.4m (4.6ft)
Direction 202°
SSW
202°
SSW
207°
SSW
210°
SSW
212°
SSW
212°
SSW
211°
SSW
211°
SSW
Period8.8 sec.9.3 sec.9.3 sec.9.2 sec.9.1 sec.8.9 sec.8.6 sec.8.5 sec.
Significant height1.0m (3.3ft)0.6m (2ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.6m (2ft)
Sea water temperature
Water temperature18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)

Sea weather on Sunday 7 December 2025

On Sunday 7 December 2025, the sun will rise at 05:09 and will set at 19:31 on the beach(es) of Knysna. The outside temperature will be a high of 68°F t and a low of 61°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 15.5mph km/h (with gusts up to 19.9mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature18°C (64°F)17°C (63°F)17°C (63°F)19°C (67°F)18°C (65°F)18°C (64°F)16°C (61°F)19°C (66°F)
Perceived temperature18°C (64°F)17°C (63°F)17°C (63°F)19°C (67°F)18°C (65°F)18°C (64°F)16°C (61°F)19°C (66°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%73%70%62%63%66%72%80%
Barometric pressure1019 hPa1018 hPa1018 hPa1017 hPa1015 hPa1013 hPa1013 hPa1015 hPa
Cloud cover36%2%0%0%0%0%0%0%
Heat index18°C (64°F)17°C (63°F)17°C (63°F)19°C (67°F)18°C (65°F)18°C (64°F)16°C (61°F)19°C (66°F)
Dew point13°C (55°F)12°C (54°F)12°C (53°F)12°C (53°F)11°C (52°F)11°C (52°F)11°C (52°F)15°C (59°F)
Wind
Speed10km/h (6mph)11km/h (7mph)8km/h (5mph)9km/h (6mph)24km/h (15mph)25km/h (16mph)22km/h (14mph)16km/h (10mph)
Gusts16km/h (10mph)17km/h (11mph)12km/h (7mph)12km/h (7mph)28km/h (17mph)32km/h (20mph)29km/h (18mph)24km/h (15mph)
Direction 22°
NNE
24°
NNE
52°
NE
112°
ESE
120°
ESE
109°
ESE
101°
E
93°
E
Wind chill18°C (64°F)17°C (63°F)17°C (63°F)19°C (67°F)18°C (65°F)18°C (64°F)16°C (61°F)19°C (66°F)
Waves
Height1.4m (4.6ft)1.4m (4.8ft)1.6m (5.2ft)1.8m (5.9ft)2.0m (6.5ft)2.0m (6.7ft)2.0m (6.7ft)2.0m (6.5ft)
Direction 210°
SSW
224°
SW
225°
SW
223°
SW
223°
SW
223°
SW
224°
SW
225°
SW
Period8.3 sec.8.3 sec.12.7 sec.12.5 sec.12.1 sec.11.9 sec.11.9 sec.11.8 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.2m (0.7ft)0.4m (1.3ft)0.9m (3ft)0.9m (3ft)0.7m (2.3ft)0.5m (1.6ft)
Sea water temperature
Water temperature20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)

Sea weather on Monday 8 December 2025

On Monday 8 December 2025, the sun will rise at 05:10 and will set at 19:31 on the beach(es) of Knysna. The outside temperature will be a high of 68°F t and a low of 65°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 11.2mph km/h (with gusts up to 16.8mph). Wave height will be up to 6.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature19°C (65°F)18°C (65°F)18°C (65°F)20°C (67°F)20°C (67°F)20°C (69°F)18°C (65°F)19°C (67°F)
Perceived temperature19°C (65°F)18°C (65°F)18°C (65°F)20°C (67°F)20°C (67°F)20°C (69°F)18°C (65°F)19°C (67°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%85%85%81%77%76%72%80%
Barometric pressure1014 hPa1013 hPa1014 hPa1014 hPa1014 hPa1013 hPa1014 hPa1016 hPa
Cloud cover3%34%20%17%3%18%3%3%
Heat index19°C (65°F)18°C (65°F)18°C (65°F)20°C (67°F)20°C (67°F)20°C (69°F)18°C (65°F)19°C (67°F)
Dew point15°C (60°F)16°C (60°F)16°C (60°F)16°C (61°F)15°C (60°F)16°C (61°F)13°C (56°F)16°C (60°F)
Wind
Speed14km/h (9mph)10km/h (6mph)1km/h (1mph)4km/h (3mph)13km/h (8mph)18km/h (11mph)10km/h (6mph)5km/h (3mph)
Gusts21km/h (13mph)15km/h (9mph)2km/h (1mph)6km/h (3mph)21km/h (13mph)27km/h (16mph)21km/h (13mph)7km/h (5mph)
Direction 95°
E
106°
ESE
54°
NE
139°
SE
149°
SSE
155°
SSE
144°
SE
102°
ESE
Wind chill19°C (65°F)18°C (65°F)18°C (65°F)20°C (67°F)20°C (67°F)20°C (69°F)18°C (65°F)19°C (67°F)
Waves
Height1.9m (6.2ft)1.8m (5.9ft)1.7m (5.5ft)1.6m (5.3ft)1.5m (5.1ft)1.5m (5.1ft)1.6m (5.3ft)1.7m (5.5ft)
Direction 226°
SW
227°
SW
228°
SW
228°
SW
228°
SW
227°
SW
224°
SW
222°
SW
Period11.7 sec.11.7 sec.11.6 sec.11.6 sec.11.6 sec.11.7 sec.11.7 sec.11.7 sec.
Significant height0.4m (1.3ft)0.2m (0.7ft)0.9m (3ft)0.1m (0.3ft)0.3m (1ft)0.5m (1.6ft)0.3m (1ft)0.2m (0.7ft)
Sea water temperature
Water temperature18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)

Sea weather on Tuesday 9 December 2025

On Tuesday 9 December 2025, the sun will rise at 05:10 and will set at 19:32 on the beach(es) of Knysna. The outside temperature will be a high of 68°F t and a low of 65°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 11.2mph km/h (with gusts up to 19.3mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature19°C (66°F)19°C (65°F)19°C (65°F)20°C (68°F)20°C (67°F)19°C (66°F)20°C (68°F)20°C (67°F)
Perceived temperature19°C (66°F)19°C (65°F)19°C (65°F)20°C (68°F)20°C (67°F)19°C (66°F)20°C (68°F)20°C (67°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%83%81%74%67%73%83%86%
Barometric pressure1016 hPa1015 hPa1015 hPa1015 hPa1016 hPa1016 hPa1017 hPa1019 hPa
Cloud cover4%3%6%3%4%14%29%14%
Heat index19°C (66°F)19°C (65°F)19°C (65°F)20°C (68°F)20°C (67°F)19°C (66°F)20°C (68°F)20°C (67°F)
Dew point16°C (61°F)16°C (60°F)15°C (59°F)15°C (59°F)13°C (56°F)14°C (57°F)17°C (63°F)17°C (63°F)
Wind
Speed5km/h (3mph)5km/h (3mph)9km/h (6mph)13km/h (8mph)16km/h (10mph)17km/h (11mph)18km/h (11mph)16km/h (10mph)
Gusts8km/h (5mph)8km/h (5mph)13km/h (8mph)17km/h (11mph)26km/h (16mph)31km/h (19mph)27km/h (17mph)24km/h (15mph)
Direction
N
297°
WNW
270°
W
264°
W
242°
WSW
232°
SW
242°
WSW
235°
SW
Wind chill19°C (66°F)19°C (65°F)19°C (65°F)20°C (68°F)20°C (67°F)19°C (66°F)20°C (68°F)20°C (67°F)
Waves
Height1.8m (5.8ft)2.0m (6.6ft)2.0m (6.5ft)1.9m (6.4ft)1.9m (6.3ft)1.8m (5.9ft)1.8m (5.9ft)1.9m (6.2ft)
Direction 223°
SW
218°
SW
219°
SW
221°
SW
223°
SW
224°
SW
225°
SW
224°
SW
Period11.6 sec.11.7 sec.11.7 sec.11.5 sec.11.3 sec.11.0 sec.10.9 sec.10.9 sec.
Significant height0.1m (0.3ft)0.2m (0.7ft)0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.5m (1.6ft)
Sea water temperature
Water temperature18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)20°C (68°F)20°C (68°F)20°C (68°F)

Sea weather on Wednesday 10 December 2025

On Wednesday 10 December 2025, the sun will rise at 05:10 and will set at 19:33 on the beach(es) of Knysna. The outside temperature will be a high of 68°F t and a low of 65°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 24.9mph km/h (with gusts up to 33.6mph). Wave height will be up to 9.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature19°C (66°F)19°C (65°F)19°C (65°F)19°C (66°F)20°C (67°F)19°C (67°F)19°C (66°F)19°C (65°F)
Perceived temperature19°C (66°F)19°C (65°F)19°C (65°F)19°C (66°F)20°C (67°F)19°C (67°F)19°C (66°F)19°C (65°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%84%82%81%77%74%77%80%
Barometric pressure1019 hPa1019 hPa1019 hPa1019 hPa1018 hPa1017 hPa1017 hPa1017 hPa
Cloud cover26%51%69%50%29%26%19%5%
Heat index19°C (66°F)19°C (65°F)19°C (65°F)19°C (66°F)20°C (67°F)19°C (67°F)19°C (66°F)19°C (65°F)
Dew point17°C (62°F)16°C (60°F)16°C (60°F)16°C (60°F)15°C (60°F)15°C (58°F)15°C (58°F)15°C (59°F)
Wind
Speed9km/h (6mph)4km/h (2mph)8km/h (5mph)20km/h (12mph)31km/h (19mph)35km/h (22mph)37km/h (23mph)40km/h (25mph)
Gusts14km/h (9mph)6km/h (4mph)10km/h (6mph)27km/h (17mph)42km/h (26mph)50km/h (31mph)54km/h (34mph)53km/h (33mph)
Direction 247°
WSW
189°
S
67°
ENE
102°
ESE
107°
ESE
105°
ESE
108°
ESE
100°
E
Wind chill19°C (66°F)19°C (65°F)19°C (65°F)19°C (66°F)20°C (67°F)19°C (67°F)19°C (66°F)19°C (65°F)
Waves
Height2.2m (7.2ft)2.4m (7.9ft)2.5m (8.2ft)2.5m (8.2ft)2.6m (8.5ft)2.7m (8.9ft)2.9m (9.5ft)2.9m (9.5ft)
Direction 220°
SW
218°
SW
218°
SW
218°
SW
211°
SSW
202°
SSW
208°
SSW
211°
SSW
Period10.6 sec.10.4 sec.10.7 sec.10.8 sec.11.6 sec.12.7 sec.12.2 sec.11.7 sec.
Significant height0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)1.2m (3.9ft)1.3m (4.3ft)1.5m (4.9ft)1.8m (5.9ft)1.8m (5.9ft)
Sea water temperature
Water temperature20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)

Sea weather on Thursday 11 December 2025

On Thursday 11 December 2025, the sun will rise at 05:10 and will set at 19:34 on the beach(es) of Knysna. The outside temperature will be a high of 68°F t and a low of 65°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 23mph km/h (with gusts up to 28mph). Wave height will be up to 8.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature18°C (65°F)18°C (64°F)19°C (65°F)19°C (67°F)19°C (66°F)19°C (67°F)20°C (69°F)20°C (68°F)
Perceived temperature18°C (65°F)18°C (64°F)19°C (65°F)19°C (67°F)19°C (66°F)19°C (67°F)20°C (69°F)20°C (68°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%83%79%75%75%77%84%88%
Barometric pressure1016 hPa1014 hPa1013 hPa1012 hPa1010 hPa1007 hPa1006 hPa1005 hPa
Cloud cover3%4%2%1%0%4%12%10%
Heat index18°C (65°F)18°C (64°F)19°C (65°F)19°C (67°F)19°C (66°F)19°C (67°F)20°C (69°F)20°C (68°F)
Dew point15°C (59°F)15°C (59°F)15°C (59°F)15°C (58°F)14°C (58°F)15°C (60°F)18°C (64°F)18°C (65°F)
Wind
Speed37km/h (23mph)27km/h (17mph)18km/h (11mph)22km/h (13mph)28km/h (17mph)32km/h (20mph)30km/h (18mph)20km/h (13mph)
Gusts45km/h (28mph)40km/h (25mph)26km/h (16mph)26km/h (16mph)30km/h (19mph)37km/h (23mph)38km/h (23mph)33km/h (21mph)
Direction 90°
E
82°
E
81°
E
99°
E
107°
ESE
99°
E
94°
E
88°
E
Wind chill18°C (65°F)18°C (64°F)19°C (65°F)19°C (67°F)19°C (66°F)19°C (67°F)20°C (69°F)20°C (68°F)
Waves
Height2.6m (8.5ft)2.3m (7.5ft)2.1m (6.9ft)2.0m (6.6ft)1.9m (6.2ft)1.9m (6.2ft)1.8m (5.9ft)1.7m (5.6ft)
Direction 215°
SW
215°
SW
214°
SW
214°
SW
215°
SW
214°
SW
208°
SSW
196°
SSW
Period11.1 sec.10.6 sec.10.3 sec.10.1 sec.10.1 sec.10.1 sec.10.0 sec.9.9 sec.
Significant height1.1m (3.6ft)0.5m (1.6ft)0.3m (1ft)0.4m (1.3ft)0.6m (2ft)1.2m (3.9ft)1.3m (4.3ft)1.4m (4.6ft)
Sea water temperature
Water temperature20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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