Sea weather in Castries in Saint Lucia All the beach weather in Castries

All the essential weather information for enjoying the beach in Castries in Saint Lucia, 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 Castries over the next 7 days?

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

Date Outside temp. Our opinion
Friday 17 July 202681°F to 83°Fdiscouraged
Saturday 18 July 202677°F to 83°Fnot recommended
Sunday 19 July 202676°F to 83°Fdiscouraged
Monday 20 July 202676°F to 83°Fdiscouraged
Tuesday 21 July 202676°F to 83°Fdiscouraged
Wednesday 22 July 202674°F to 83°Fdiscouraged
Thursday 23 July 202676°F to 83°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Castries

Sea weather on Friday 17 July 2026

On Friday 17 July 2026, the sun will rise at 05:45 and will set at 18:36 on the beach(es) of Castries. The outside temperature will be a high of 83°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 32.3mph). Wave height will be up to 5.6ft 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 (81°F)27°C (81°F)28°C (82°F)27°C (81°F)27°C (81°F)
Perceived temperature31°C (87°F)30°C (87°F)31°C (87°F)31°C (88°F)31°C (87°F)31°C (88°F)31°C (87°F)31°C (88°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%76%80%79%79%79%80%82%
Barometric pressure1017 hPa1016 hPa1017 hPa1018 hPa1017 hPa1015 hPa1016 hPa1017 hPa
Cloud cover57%60%70%62%52%48%49%52%
Heat index31°C (87°F)30°C (87°F)31°C (87°F)31°C (88°F)31°C (87°F)31°C (88°F)31°C (87°F)31°C (88°F)
Dew point23°C (73°F)23°C (73°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)24°C (75°F)
Wind
Speed36km/h (22mph)36km/h (23mph)37km/h (23mph)37km/h (23mph)35km/h (22mph)35km/h (21mph)35km/h (22mph)37km/h (23mph)
Gusts49km/h (30mph)49km/h (31mph)50km/h (31mph)50km/h (31mph)52km/h (32mph)48km/h (30mph)49km/h (30mph)52km/h (32mph)
Direction 87°
E
90°
E
83°
E
86°
E
81°
E
75°
ENE
65°
ENE
72°
ENE
Wind chill27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)27°C (81°F)
Waves
Height1.3m (4.4ft)1.5m (5.0ft)1.6m (5.3ft)1.7m (5.5ft)1.6m (5.3ft)1.5m (5.1ft)1.5m (5.0ft)1.6m (5.2ft)
Direction 79°
E
80°
E
75°
ENE
77°
ENE
84°
E
85°
E
85°
E
85°
E
Period12.5 sec.12.4 sec.12.5 sec.12.5 sec.12.1 sec.12.2 sec.12.1 sec.12.1 sec.
Significant height1.2m (3.9ft)1.3m (4.3ft)1.3m (4.3ft)1.3m (4.3ft)1.2m (3.9ft)1.1m (3.6ft)1.2m (3.9ft)1.4m (4.6ft)
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 Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 05:45 and will set at 18:36 on the beach(es) of Castries. The outside temperature will be a high of 83°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! 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 6.2ft 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 (81°F)27°C (80°F)25°C (77°F)27°C (80°F)27°C (81°F)
Perceived temperature31°C (87°F)31°C (87°F)30°C (86°F)30°C (86°F)29°C (85°F)27°C (80°F)29°C (84°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%77%74%74%72%70%72%75%
Barometric pressure1017 hPa1015 hPa1016 hPa1017 hPa1016 hPa1014 hPa1015 hPa1016 hPa
Cloud cover37%13%37%59%36%12%7%53%
Heat index31°C (87°F)31°C (87°F)30°C (86°F)30°C (86°F)29°C (85°F)27°C (80°F)29°C (84°F)30°C (86°F)
Dew point24°C (75°F)23°C (73°F)22°C (72°F)22°C (72°F)21°C (70°F)19°C (67°F)21°C (70°F)22°C (72°F)
Wind
Speed41km/h (25mph)37km/h (23mph)39km/h (24mph)39km/h (24mph)37km/h (23mph)36km/h (23mph)34km/h (21mph)35km/h (21mph)
Gusts55km/h (34mph)51km/h (32mph)52km/h (32mph)51km/h (32mph)55km/h (34mph)39km/h (24mph)40km/h (25mph)49km/h (30mph)
Direction 78°
ENE
75°
ENE
81°
E
79°
E
81°
E
78°
ENE
77°
ENE
78°
ENE
Wind chill27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)25°C (77°F)27°C (80°F)27°C (81°F)
Waves
Height1.9m (6.2ft)1.9m (6.2ft)1.8m (5.9ft)1.9m (6.2ft)1.9m (6.2ft)1.8m (6.0ft)1.8m (5.8ft)1.8m (5.8ft)
Direction 84°
E
85°
E
88°
E
87°
E
86°
E
86°
E
87°
E
87°
E
Period12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.
Significant height1.5m (4.9ft)1.4m (4.6ft)1.3m (4.3ft)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 Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 05:45 and will set at 18:36 on the beach(es) of Castries. The outside temperature will be a high of 83°F t and a low of 76°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 21.1mph km/h (with gusts up to 29.2mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)28°C (82°F)28°C (82°F)24°C (76°F)26°C (78°F)27°C (80°F)27°C (81°F)
Perceived temperature30°C (86°F)30°C (87°F)31°C (88°F)32°C (89°F)26°C (79°F)28°C (82°F)29°C (85°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%74%76%75%76%74%76%77%
Barometric pressure1015 hPa1014 hPa1014 hPa1015 hPa1015 hPa1013 hPa1013 hPa1015 hPa
Cloud cover38%48%29%2%11%0%5%28%
Heat index30°C (86°F)30°C (87°F)31°C (88°F)32°C (89°F)26°C (79°F)28°C (82°F)29°C (85°F)31°C (87°F)
Dew point22°C (72°F)22°C (72°F)23°C (73°F)23°C (74°F)20°C (67°F)21°C (69°F)22°C (72°F)23°C (73°F)
Wind
Speed34km/h (21mph)33km/h (20mph)32km/h (20mph)34km/h (21mph)34km/h (21mph)31km/h (19mph)32km/h (20mph)30km/h (19mph)
Gusts47km/h (29mph)45km/h (28mph)45km/h (28mph)46km/h (29mph)40km/h (25mph)37km/h (23mph)32km/h (20mph)42km/h (26mph)
Direction 81°
E
76°
ENE
78°
ENE
85°
E
84°
E
82°
E
74°
ENE
86°
E
Wind chill27°C (81°F)27°C (81°F)28°C (82°F)28°C (82°F)24°C (76°F)26°C (78°F)27°C (80°F)27°C (81°F)
Waves
Height1.7m (5.7ft)1.7m (5.5ft)1.7m (5.5ft)1.6m (5.2ft)1.6m (5.1ft)1.5m (5.0ft)1.5m (4.8ft)1.4m (4.8ft)
Direction 86°
E
86°
E
85°
E
84°
E
84°
E
84°
E
84°
E
84°
E
Period12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.
Significant height1.4m (4.6ft)1.3m (4.3ft)1.2m (3.9ft)1.1m (3.6ft)1.2m (3.9ft)1.1m (3.6ft)1.0m (3.3ft)1.2m (3.9ft)
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 20 July 2026

On Monday 20 July 2026, the sun will rise at 05:45 and will set at 18:35 on the beach(es) of Castries. The outside temperature will be a high of 83°F t and a low of 76°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 19.3mph km/h (with gusts up to 26.7mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (76°F)28°C (82°F)28°C (82°F)27°C (81°F)
Perceived temperature31°C (88°F)31°C (87°F)31°C (87°F)31°C (88°F)26°C (79°F)31°C (88°F)30°C (87°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%73%73%72%70%72%73%73%
Barometric pressure1015 hPa1013 hPa1013 hPa1014 hPa1014 hPa1012 hPa1013 hPa1014 hPa
Cloud cover76%60%31%0%0%44%49%46%
Heat index31°C (88°F)31°C (87°F)31°C (87°F)31°C (88°F)26°C (79°F)31°C (88°F)30°C (87°F)30°C (86°F)
Dew point23°C (73°F)22°C (72°F)22°C (72°F)22°C (72°F)19°C (66°F)22°C (72°F)22°C (72°F)22°C (71°F)
Wind
Speed28km/h (17mph)31km/h (19mph)29km/h (18mph)31km/h (19mph)27km/h (17mph)28km/h (17mph)29km/h (18mph)27km/h (17mph)
Gusts38km/h (24mph)43km/h (27mph)41km/h (26mph)42km/h (26mph)33km/h (20mph)39km/h (24mph)39km/h (24mph)39km/h (24mph)
Direction 94°
E
79°
E
84°
E
89°
E
84°
E
81°
E
78°
ENE
67°
ENE
Wind chill28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (76°F)28°C (82°F)28°C (82°F)27°C (81°F)
Waves
Height1.4m (4.7ft)1.5m (4.8ft)1.4m (4.6ft)1.3m (4.4ft)1.3m (4.1ft)1.2m (3.9ft)1.2m (4.0ft)1.2m (4.1ft)
Direction 84°
E
84°
E
84°
E
84°
E
84°
E
84°
E
85°
E
84°
E
Period12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.
Significant height1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)0.9m (3ft)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 Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 05:46 and will set at 18:35 on the beach(es) of Castries. The outside temperature will be a high of 83°F t and a low of 76°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 16.8mph km/h (with gusts up to 23.6mph). Wave height will be up to 3.9ft 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 (81°F)24°C (76°F)27°C (81°F)27°C (81°F)27°C (81°F)
Perceived temperature30°C (86°F)30°C (86°F)29°C (85°F)30°C (85°F)26°C (78°F)30°C (85°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%75%73%69%69%70%71%75%
Barometric pressure1014 hPa1012 hPa1013 hPa1014 hPa1014 hPa1013 hPa1013 hPa1015 hPa
Cloud cover27%26%24%9%4%17%17%41%
Heat index30°C (86°F)30°C (86°F)29°C (85°F)30°C (85°F)26°C (78°F)30°C (85°F)30°C (86°F)30°C (86°F)
Dew point22°C (72°F)22°C (72°F)22°C (71°F)21°C (70°F)18°C (65°F)21°C (70°F)21°C (71°F)22°C (72°F)
Wind
Speed26km/h (16mph)27km/h (17mph)26km/h (16mph)24km/h (15mph)24km/h (15mph)26km/h (16mph)25km/h (15mph)27km/h (17mph)
Gusts36km/h (22mph)38km/h (23mph)35km/h (22mph)33km/h (20mph)28km/h (17mph)38km/h (24mph)35km/h (22mph)37km/h (23mph)
Direction 77°
ENE
82°
E
87°
E
88°
E
87°
E
94°
E
94°
E
93°
E
Wind chill27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)24°C (76°F)27°C (81°F)27°C (81°F)27°C (81°F)
Waves
Height1.2m (3.8ft)1.1m (3.6ft)1.1m (3.5ft)1.0m (3.3ft)0.9m (3.1ft)1.0m (3.2ft)1.0m (3.2ft)1.0m (3.2ft)
Direction 84°
E
84°
E
84°
E
85°
E
85°
E
86°
E
86°
E
86°
E
Period12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.
Significant height0.9m (3ft)0.8m (2.6ft)0.9m (3ft)0.7m (2.3ft)0.7m (2.3ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)
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 Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 05:46 and will set at 18:35 on the beach(es) of Castries. The outside temperature will be a high of 83°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 19.3mph km/h (with gusts up to 27.3mph). Wave height will be up to 4.6ft 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)26°C (79°F)25°C (76°F)27°C (81°F)27°C (81°F)27°C (81°F)
Perceived temperature30°C (85°F)29°C (84°F)30°C (85°F)29°C (83°F)27°C (80°F)30°C (86°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%74%75%71%71%72%76%76%
Barometric pressure1015 hPa1013 hPa1014 hPa1015 hPa1015 hPa1014 hPa1014 hPa1015 hPa
Cloud cover51%48%31%22%8%32%53%54%
Heat index30°C (85°F)29°C (84°F)30°C (85°F)29°C (83°F)27°C (80°F)30°C (86°F)30°C (86°F)30°C (86°F)
Dew point22°C (72°F)22°C (71°F)22°C (72°F)21°C (69°F)19°C (66°F)22°C (71°F)23°C (73°F)23°C (73°F)
Wind
Speed26km/h (16mph)29km/h (18mph)27km/h (17mph)30km/h (18mph)31km/h (19mph)30km/h (19mph)31km/h (19mph)31km/h (19mph)
Gusts36km/h (22mph)40km/h (25mph)37km/h (23mph)37km/h (23mph)36km/h (23mph)43km/h (27mph)42km/h (26mph)44km/h (27mph)
Direction 94°
E
93°
E
87°
E
86°
E
86°
E
86°
E
83°
E
81°
E
Wind chill27°C (80°F)27°C (80°F)27°C (80°F)26°C (79°F)25°C (76°F)27°C (81°F)27°C (81°F)27°C (81°F)
Waves
Height1.0m (3.2ft)1.0m (3.4ft)1.1m (3.6ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.4m (4.6ft)
Direction 86°
E
88°
E
91°
E
92°
E
94°
E
94°
E
94°
E
93°
E
Period12.1 sec.12.1 sec.12.1 sec.11.3 sec.9.7 sec.9.6 sec.9.6 sec.9.6 sec.
Significant height0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.1m (3.6ft)1.0m (3.3ft)1.1m (3.6ft)1.2m (3.9ft)
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 Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 05:46 and will set at 18:35 on the beach(es) of Castries. The outside temperature will be a high of 83°F t and a low of 76°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 28mph). Wave height will be up to 4.9ft 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)26°C (79°F)25°C (77°F)27°C (81°F)27°C (81°F)27°C (81°F)
Perceived temperature30°C (85°F)30°C (85°F)30°C (85°F)29°C (83°F)27°C (80°F)30°C (86°F)31°C (87°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%77%74%69%71%75%79%81%
Barometric pressure1015 hPa1013 hPa1014 hPa1015 hPa1015 hPa1013 hPa1013 hPa1015 hPa
Cloud cover50%46%40%26%16%60%75%66%
Heat index30°C (85°F)30°C (85°F)30°C (85°F)29°C (83°F)27°C (80°F)30°C (86°F)31°C (87°F)31°C (87°F)
Dew point22°C (72°F)23°C (73°F)22°C (72°F)20°C (68°F)19°C (67°F)22°C (72°F)23°C (74°F)24°C (74°F)
Wind
Speed32km/h (20mph)33km/h (20mph)32km/h (20mph)30km/h (18mph)28km/h (18mph)28km/h (17mph)28km/h (18mph)28km/h (18mph)
Gusts45km/h (28mph)44km/h (27mph)44km/h (27mph)37km/h (23mph)34km/h (21mph)39km/h (24mph)40km/h (25mph)40km/h (25mph)
Direction 80°
E
77°
ENE
77°
ENE
76°
ENE
73°
ENE
70°
ENE
66°
ENE
70°
ENE
Wind chill27°C (80°F)27°C (80°F)27°C (81°F)26°C (79°F)25°C (77°F)27°C (81°F)27°C (81°F)27°C (81°F)
Waves
Height1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.5m (4.9ft)1.5m (4.9ft)1.4m (4.6ft)1.3m (4.3ft)1.2m (3.9ft)
Direction 92°
E
92°
E
91°
E
90°
E
89°
E
86°
E
83°
E
86°
E
Period9.6 sec.9.2 sec.8.3 sec.8.3 sec.8.3 sec.8.3 sec.8.3 sec.8.3 sec.
Significant height1.2m (3.9ft)1.1m (3.6ft)1.2m (3.9ft)1.3m (4.3ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)1.0m (3.3ft)
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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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