Sea weather in Grand Cul-de-Sac in Saint-Barthelemy All the beach weather in Grand Cul-de-Sac

All the essential weather information for enjoying the beach in Grand Cul-de-Sac in Saint-Barthelemy, 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 Grand Cul-de-Sac over the next 7 days?

Discover the best moment to go to the beach in Grand Cul-de-Sac in Saint-Barthelemy this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Grand Cul-de-Sac. 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 202577°F to 81°Fdiscouraged
Saturday 6 December 202574°F to 81°Fdiscouraged
Sunday 7 December 202581°F to 81°Fdiscouraged
Monday 8 December 202574°F to 81°Fdiscouraged
Tuesday 9 December 202579°F to 81°Fdiscouraged
Wednesday 10 December 202581°F to 81°Fdiscouraged
Thursday 11 December 202581°F to 81°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Grand Cul-de-Sac

Sea weather on Friday 5 December 2025

On Friday 5 December 2025, the sun will rise at 06:29 and will set at 17:36 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 77°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 21.8mph km/h (with gusts up to 30.5mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)27°C (80°F)27°C (80°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Perceived temperature30°C (85°F)30°C (85°F)29°C (84°F)29°C (85°F)28°C (83°F)29°C (84°F)29°C (84°F)30°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%72%67%71%70%71%67%75%
Barometric pressure1015 hPa1014 hPa1015 hPa1017 hPa1016 hPa1013 hPa1014 hPa1016 hPa
Cloud cover55%77%42%62%75%89%32%57%
Heat index30°C (85°F)30°C (85°F)29°C (84°F)29°C (85°F)28°C (83°F)29°C (84°F)29°C (84°F)30°C (85°F)
Dew point22°C (71°F)22°C (71°F)20°C (69°F)21°C (70°F)21°C (69°F)21°C (70°F)20°C (68°F)22°C (72°F)
Wind
Speed30km/h (19mph)31km/h (19mph)30km/h (18mph)29km/h (18mph)35km/h (22mph)34km/h (21mph)32km/h (20mph)34km/h (21mph)
Gusts41km/h (25mph)41km/h (26mph)40km/h (25mph)39km/h (24mph)38km/h (23mph)49km/h (31mph)44km/h (28mph)47km/h (29mph)
Direction 96°
E
89°
E
81°
E
72°
ENE
87°
E
79°
E
77°
ENE
75°
ENE
Wind chill27°C (81°F)27°C (81°F)27°C (80°F)27°C (80°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Waves
Height1.5m (4.8ft)1.4m (4.6ft)1.4m (4.6ft)1.3m (4.4ft)1.2m (4.0ft)1.3m (4.3ft)1.3m (4.3ft)1.3m (4.4ft)
Direction 114°
ESE
114°
ESE
114°
ESE
114°
ESE
114°
ESE
114°
ESE
116°
ESE
116°
ESE
Period9.4 sec.9.4 sec.9.5 sec.9.4 sec.9.4 sec.9.4 sec.9.3 sec.9.3 sec.
Significant height1.6m (5.2ft)1.5m (4.9ft)1.6m (5.2ft)1.4m (4.6ft)1.3m (4.3ft)1.3m (4.3ft)1.2m (3.9ft)1.3m (4.3ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Saturday 6 December 2025

On Saturday 6 December 2025, the sun will rise at 06:29 and will set at 17:36 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 74°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 22.4mph km/h (with gusts up to 29.8mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (80°F)27°C (80°F)27°C (81°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)
Perceived temperature30°C (86°F)29°C (85°F)29°C (84°F)29°C (85°F)28°C (83°F)29°C (84°F)30°C (85°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity72%72%69%71%67%70%75%76%
Barometric pressure1015 hPa1014 hPa1014 hPa1016 hPa1016 hPa1014 hPa1015 hPa1016 hPa
Cloud cover87%51%49%70%37%52%64%54%
Heat index30°C (86°F)29°C (85°F)29°C (84°F)29°C (85°F)28°C (83°F)29°C (84°F)30°C (85°F)30°C (86°F)
Dew point22°C (71°F)22°C (71°F)21°C (69°F)21°C (70°F)20°C (67°F)21°C (70°F)22°C (72°F)22°C (72°F)
Wind
Speed36km/h (22mph)32km/h (20mph)32km/h (20mph)29km/h (18mph)30km/h (18mph)26km/h (16mph)32km/h (20mph)34km/h (21mph)
Gusts48km/h (30mph)43km/h (27mph)43km/h (27mph)39km/h (25mph)44km/h (28mph)37km/h (23mph)43km/h (27mph)48km/h (30mph)
Direction 83°
E
87°
E
81°
E
93°
E
96°
E
73°
ENE
69°
ENE
79°
E
Wind chill27°C (81°F)27°C (80°F)27°C (80°F)27°C (81°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)
Waves
Height1.3m (4.3ft)1.4m (4.5ft)1.3m (4.3ft)1.2m (4.1ft)1.3m (4.4ft)1.3m (4.3ft)1.2m (4.0ft)1.2m (4.0ft)
Direction 116°
ESE
116°
ESE
116°
ESE
116°
ESE
116°
ESE
99°
E
116°
ESE
115°
ESE
Period9.2 sec.9.2 sec.9.1 sec.9.1 sec.13.2 sec.9.0 sec.9.0 sec.9.0 sec.
Significant height1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Sunday 7 December 2025

On Sunday 7 December 2025, the sun will rise at 06:30 and will set at 17:37 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 81°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 21.8mph km/h (with gusts up to 28.6mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)
Perceived temperature30°C (86°F)30°C (86°F)30°C (85°F)30°C (85°F)29°C (84°F)30°C (85°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%77%72%77%72%77%76%77%
Barometric pressure1015 hPa1014 hPa1015 hPa1017 hPa1016 hPa1014 hPa1015 hPa1016 hPa
Cloud cover73%78%44%86%41%67%68%51%
Heat index30°C (86°F)30°C (86°F)30°C (85°F)30°C (85°F)29°C (84°F)30°C (85°F)30°C (86°F)30°C (86°F)
Dew point23°C (73°F)23°C (73°F)22°C (71°F)22°C (72°F)21°C (71°F)22°C (72°F)22°C (72°F)23°C (73°F)
Wind
Speed33km/h (20mph)35km/h (21mph)32km/h (20mph)31km/h (19mph)27km/h (17mph)25km/h (15mph)28km/h (17mph)30km/h (19mph)
Gusts44km/h (27mph)46km/h (29mph)43km/h (27mph)43km/h (27mph)41km/h (25mph)36km/h (22mph)38km/h (24mph)41km/h (26mph)
Direction 88°
E
91°
E
92°
E
93°
E
96°
E
86°
E
86°
E
92°
E
Wind chill27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)
Waves
Height1.3m (4.3ft)1.3m (4.3ft)1.3m (4.3ft)1.3m (4.2ft)1.2m (3.9ft)1.1m (3.7ft)1.0m (3.4ft)1.0m (3.4ft)
Direction 115°
ESE
101°
E
101°
E
100°
E
109°
ESE
117°
ESE
117°
ESE
117°
ESE
Period12.7 sec.9.0 sec.8.9 sec.8.9 sec.8.9 sec.8.9 sec.8.7 sec.8.7 sec.
Significant height1.1m (3.6ft)1.2m (3.9ft)1.1m (3.6ft)1.2m (3.9ft)1.1m (3.6ft)1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Monday 8 December 2025

On Monday 8 December 2025, the sun will rise at 06:31 and will set at 17:37 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 74°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 19.9mph km/h (with gusts up to 27.3mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)23°C (74°F)27°C (80°F)27°C (81°F)27°C (81°F)
Perceived temperature30°C (86°F)29°C (85°F)29°C (85°F)29°C (84°F)25°C (77°F)29°C (84°F)30°C (86°F)29°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%72%73%65%69%72%74%71%
Barometric pressure1015 hPa1014 hPa1014 hPa1016 hPa1015 hPa1013 hPa1014 hPa1015 hPa
Cloud cover78%46%47%0%6%84%59%24%
Heat index30°C (86°F)29°C (85°F)29°C (85°F)29°C (84°F)25°C (77°F)29°C (84°F)30°C (86°F)29°C (85°F)
Dew point23°C (73°F)21°C (70°F)22°C (71°F)20°C (68°F)17°C (63°F)21°C (71°F)22°C (72°F)21°C (70°F)
Wind
Speed32km/h (20mph)27km/h (17mph)30km/h (19mph)27km/h (17mph)24km/h (15mph)26km/h (16mph)25km/h (16mph)28km/h (17mph)
Gusts44km/h (28mph)36km/h (23mph)41km/h (25mph)36km/h (23mph)28km/h (17mph)38km/h (24mph)35km/h (22mph)38km/h (24mph)
Direction 90°
E
86°
E
96°
E
102°
ESE
107°
ESE
114°
ESE
109°
ESE
100°
E
Wind chill27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)23°C (74°F)27°C (80°F)27°C (81°F)27°C (81°F)
Waves
Height1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)1.0m (3.4ft)1.0m (3.4ft)1.1m (3.5ft)1.0m (3.4ft)1.5m (5.0ft)
Direction 117°
ESE
117°
ESE
117°
ESE
117°
ESE
116°
ESE
116°
ESE
116°
ESE
82°
E
Period8.7 sec.8.7 sec.8.6 sec.8.6 sec.8.6 sec.8.6 sec.8.6 sec.8.9 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)1.1m (3.6ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Tuesday 9 December 2025

On Tuesday 9 December 2025, the sun will rise at 06:31 and will set at 17:37 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 79°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 20.5mph km/h (with gusts up to 28.6mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Perceived temperature29°C (84°F)29°C (84°F)29°C (85°F)29°C (85°F)29°C (84°F)29°C (85°F)30°C (86°F)30°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity70%70%72%75%76%75%77%76%
Barometric pressure1015 hPa1014 hPa1015 hPa1016 hPa1016 hPa1014 hPa1014 hPa1015 hPa
Cloud cover31%47%83%70%46%64%70%47%
Heat index29°C (84°F)29°C (84°F)29°C (85°F)29°C (85°F)29°C (84°F)29°C (85°F)30°C (86°F)30°C (85°F)
Dew point21°C (70°F)21°C (70°F)22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)23°C (73°F)22°C (72°F)
Wind
Speed27km/h (17mph)24km/h (15mph)23km/h (14mph)26km/h (16mph)28km/h (17mph)28km/h (17mph)30km/h (19mph)33km/h (20mph)
Gusts36km/h (22mph)33km/h (20mph)31km/h (19mph)37km/h (23mph)41km/h (26mph)40km/h (25mph)42km/h (26mph)46km/h (28mph)
Direction 98°
E
98°
E
100°
E
87°
E
93°
E
101°
E
90°
E
94°
E
Wind chill27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Waves
Height1.5m (4.9ft)1.5m (4.8ft)1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.6m (5.2ft)1.6m (5.2ft)1.5m (4.9ft)
Direction 82°
E
81°
E
81°
E
80°
E
80°
E
79°
E
79°
ENE
79°
E
Period9.0 sec.9.3 sec.9.2 sec.9.0 sec.10.0 sec.10.8 sec.9.3 sec.11.2 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.2m (3.9ft)1.0m (3.3ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)

Sea weather on Wednesday 10 December 2025

On Wednesday 10 December 2025, the sun will rise at 06:32 and will set at 17:38 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 81°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 31.7mph). Wave height will be up to 5.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (80°F)27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)
Perceived temperature29°C (85°F)30°C (86°F)30°C (86°F)30°C (86°F)29°C (84°F)30°C (86°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%77%78%77%76%80%79%78%
Barometric pressure1015 hPa1014 hPa1015 hPa1017 hPa1016 hPa1015 hPa1015 hPa1016 hPa
Cloud cover40%71%73%79%64%54%42%21%
Heat index29°C (85°F)30°C (86°F)30°C (86°F)30°C (86°F)29°C (84°F)30°C (86°F)30°C (86°F)30°C (86°F)
Dew point22°C (71°F)23°C (73°F)23°C (73°F)23°C (73°F)22°C (72°F)23°C (73°F)23°C (73°F)23°C (73°F)
Wind
Speed32km/h (20mph)29km/h (18mph)31km/h (19mph)35km/h (22mph)37km/h (23mph)36km/h (22mph)35km/h (22mph)37km/h (23mph)
Gusts45km/h (28mph)39km/h (24mph)42km/h (26mph)45km/h (28mph)46km/h (28mph)51km/h (32mph)49km/h (30mph)50km/h (31mph)
Direction 99°
E
87°
E
83°
E
87°
E
91°
E
93°
E
97°
E
97°
E
Wind chill27°C (80°F)27°C (80°F)27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)
Waves
Height1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.7m (5.6ft)1.8m (5.9ft)
Direction 80°
E
80°
E
81°
E
82°
E
85°
E
87°
E
86°
E
87°
E
Period12.2 sec.14.4 sec.14.1 sec.14.0 sec.13.6 sec.13.2 sec.13.1 sec.13.0 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.2m (3.9ft)1.3m (4.3ft)
Sea water temperature
Water temperature28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)

Sea weather on Thursday 11 December 2025

On Thursday 11 December 2025, the sun will rise at 06:32 and will set at 17:38 on the beach(es) of Grand Cul-de-Sac. The outside temperature will be a high of 81°F t and a low of 81°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 25.5mph km/h (with gusts up to 34.2mph). Wave height will be up to 6.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Perceived temperature30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)29°C (85°F)30°C (85°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%79%80%80%79%79%79%80%
Barometric pressure1015 hPa1014 hPa1015 hPa1016 hPa1016 hPa1015 hPa1015 hPa1017 hPa
Cloud cover61%76%69%37%51%44%68%69%
Heat index30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)29°C (85°F)30°C (85°F)30°C (86°F)30°C (86°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)
Wind
Speed37km/h (23mph)37km/h (23mph)41km/h (26mph)39km/h (24mph)36km/h (22mph)34km/h (21mph)36km/h (22mph)39km/h (24mph)
Gusts51km/h (32mph)50km/h (31mph)55km/h (34mph)48km/h (30mph)41km/h (26mph)49km/h (31mph)50km/h (31mph)54km/h (33mph)
Direction 96°
E
95°
E
91°
E
96°
E
96°
E
93°
E
91°
E
91°
E
Wind chill27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Waves
Height1.9m (6.2ft)1.9m (6.2ft)2.0m (6.6ft)2.0m (6.6ft)2.1m (6.9ft)2.1m (6.9ft)2.0m (6.6ft)2.1m (6.9ft)
Direction 89°
E
90°
E
90°
E
88°
E
88°
E
90°
E
91°
E
91°
E
Period13.1 sec.13.5 sec.14.4 sec.14.3 sec.14.2 sec.14.1 sec.13.0 sec.10.8 sec.
Significant height1.3m (4.3ft)1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)1.3m (4.3ft)1.2m (3.9ft)1.3m (4.3ft)1.4m (4.6ft)
Sea water temperature
Water temperature28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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