Sea weather in Marsh Island in Louisiana All the beach weather in Marsh Island

All the essential weather information for enjoying the beach in Marsh Island in Louisiana, 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 Marsh Island over the next 7 days?

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

Date Outside temp. Our opinion
Thursday 17 July 202581°F to 85°Fdiscouraged
Friday 18 July 202579°F to 85°Frecommended
Saturday 19 July 202583°F to 86°Fdiscouraged
Sunday 20 July 202579°F to 86°Frecommended
Monday 21 July 202581°F to 86°Frecommended
Tuesday 22 July 202579°F to 86°Frecommended
Wednesday 23 July 202576°F to 90°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Marsh Island

Sea weather on Thursday 17 July 2025

On Thursday 17 July 2025, the sun will rise at 06:18 and will set at 20:08 on the beach(es) of Marsh Island. The outside temperature will be a high of 85°F t and a low of 81°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 13.1mph km/h (with gusts up to 19.9mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (83°F)28°C (82°F)27°C (81°F)28°C (83°F)28°C (82°F)28°C (82°F)27°C (81°F)27°C (81°F)
Perceived temperature33°C (91°F)31°C (88°F)31°C (88°F)32°C (90°F)31°C (89°F)31°C (88°F)31°C (87°F)31°C (87°F)
Precipitation0.1in0in0in0in0in0in0in0in
Humidity76%75%80%77%75%71%77%79%
Barometric pressure1014 hPa1014 hPa1015 hPa1015 hPa1015 hPa1015 hPa1014 hPa1015 hPa
Cloud cover53%70%59%76%51%59%52%74%
Heat index33°C (91°F)31°C (88°F)31°C (88°F)32°C (90°F)31°C (89°F)31°C (88°F)31°C (87°F)31°C (87°F)
Dew point24°C (75°F)23°C (73°F)24°C (75°F)24°C (75°F)23°C (74°F)22°C (72°F)23°C (73°F)23°C (74°F)
Wind
Speed6km/h (4mph)0km/h (0mph)21km/h (13mph)16km/h (10mph)15km/h (10mph)5km/h (3mph)14km/h (9mph)14km/h (9mph)
Gusts10km/h (6mph)1km/h (0mph)32km/h (20mph)23km/h (14mph)26km/h (16mph)9km/h (5mph)21km/h (13mph)21km/h (13mph)
Direction 314°
NW
329°
NNW
315°
NW
295°
WNW
319°
NW
323°
NW
260°
W
308°
NW
Wind chill29°C (83°F)28°C (82°F)27°C (81°F)28°C (83°F)28°C (82°F)28°C (82°F)27°C (81°F)27°C (81°F)
Waves
Height0.2m (0.6ft)0.1m (0.5ft)0.3m (0.9ft)0.3m (0.9ft)0.3m (0.9ft)0.2m (0.8ft)0.3m (1.0ft)0.1m (0.4ft)
Direction 270°
W
298°
WNW
334°
NNW
307°
NW
287°
WNW
287°
WNW
295°
WNW
322°
NW
Period0.1 sec.0.1 sec.0.1 sec.0.1 sec.0.1 sec.0.1 sec.0.1 sec.0.1 sec.
Significant height0.4m (1.3ft)0.4m (1.3ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.8m (2.6ft)0.2m (0.7ft)
Sea water temperature
Water temperature31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)

Sea weather on Friday 18 July 2025

On Friday 18 July 2025, the sun will rise at 06:18 and will set at 20:08 on the beach(es) of Marsh Island. The outside temperature will be a high of 85°F t and a low of 79°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 12.4mph km/h (with gusts up to 17.4mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (80°F)26°C (80°F)27°C (81°F)27°C (81°F)29°C (83°F)29°C (84°F)29°C (84°F)
Perceived temperature30°C (85°F)30°C (86°F)29°C (85°F)30°C (86°F)30°C (86°F)32°C (89°F)32°C (90°F)32°C (90°F)
Precipitation0in0.1in0.1in0in0in0in0in0in
Humidity83%80%81%76%74%70%67%69%
Barometric pressure1015 hPa1015 hPa1017 hPa1018 hPa1018 hPa1017 hPa1018 hPa1018 hPa
Cloud cover81%100%95%66%63%37%34%25%
Heat index30°C (85°F)30°C (86°F)29°C (85°F)30°C (86°F)30°C (86°F)32°C (89°F)32°C (90°F)32°C (90°F)
Dew point23°C (74°F)23°C (73°F)23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)22°C (72°F)23°C (73°F)
Wind
Speed9km/h (6mph)8km/h (5mph)7km/h (4mph)9km/h (6mph)15km/h (9mph)20km/h (12mph)17km/h (11mph)17km/h (11mph)
Gusts13km/h (8mph)14km/h (9mph)12km/h (8mph)16km/h (10mph)22km/h (14mph)28km/h (17mph)25km/h (15mph)26km/h (16mph)
Direction 289°
WNW
241°
WSW
278°
W
260°
W
219°
SW
221°
SW
212°
SSW
199°
SSW
Wind chill27°C (80°F)27°C (80°F)26°C (80°F)27°C (81°F)27°C (81°F)29°C (83°F)29°C (84°F)29°C (84°F)
Waves
Height0.2m (0.6ft)0.3m (1.1ft)0.3m (0.9ft)0.6m (2.0ft)0.4m (1.3ft)0.4m (1.2ft)0.3m (1.0ft)0.3m (0.9ft)
Direction 310°
NW
259°
W
178°
S
181°
S
200°
SSW
204°
SSW
225°
SW
217°
SW
Period0.1 sec.0.1 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.
Significant height0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (1ft)1.0m (3.3ft)0.9m (3ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)

Sea weather on Saturday 19 July 2025

On Saturday 19 July 2025, the sun will rise at 06:19 and will set at 20:07 on the beach(es) of Marsh Island. The outside temperature will be a high of 86°F t and a low of 83°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 13.7mph km/h (with gusts up to 19.3mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (84°F)29°C (84°F)29°C (85°F)30°C (86°F)29°C (84°F)30°C (85°F)29°C (84°F)29°C (84°F)
Perceived temperature33°C (91°F)33°C (92°F)34°C (93°F)34°C (94°F)33°C (91°F)34°C (93°F)32°C (90°F)33°C (92°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity72%74%73%69%71%68%68%72%
Barometric pressure1018 hPa1017 hPa1019 hPa1020 hPa1020 hPa1019 hPa1019 hPa1019 hPa
Cloud cover46%71%64%74%27%16%8%12%
Heat index33°C (91°F)33°C (92°F)34°C (93°F)34°C (94°F)33°C (91°F)34°C (93°F)32°C (90°F)33°C (92°F)
Dew point23°C (74°F)24°C (75°F)24°C (75°F)24°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)24°C (74°F)
Wind
Speed22km/h (13mph)18km/h (11mph)15km/h (9mph)15km/h (10mph)15km/h (10mph)13km/h (8mph)15km/h (9mph)15km/h (9mph)
Gusts31km/h (20mph)27km/h (17mph)21km/h (13mph)21km/h (13mph)23km/h (14mph)19km/h (12mph)24km/h (15mph)22km/h (14mph)
Direction 189°
S
200°
SSW
205°
SSW
197°
SSW
191°
SSW
198°
SSW
191°
SSW
193°
SSW
Wind chill29°C (84°F)29°C (84°F)29°C (85°F)30°C (86°F)29°C (84°F)30°C (85°F)29°C (84°F)29°C (84°F)
Waves
Height0.3m (0.9ft)0.2m (0.7ft)0.2m (0.5ft)0.1m (0.5ft)0.2m (0.6ft)0.2m (0.7ft)0.2m (0.6ft)0.1m (0.5ft)
Direction 206°
SSW
201°
SSW
203°
SSW
201°
SSW
199°
SSW
201°
SSW
203°
SSW
200°
SSW
Period1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.
Significant height0.6m (2ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.3m (1ft)
Sea water temperature
Water temperature29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)

Sea weather on Sunday 20 July 2025

On Sunday 20 July 2025, the sun will rise at 06:19 and will set at 20:07 on the beach(es) of Marsh Island. The outside temperature will be a high of 86°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 10.6mph km/h (with gusts up to 19.9mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (84°F)29°C (84°F)29°C (84°F)30°C (86°F)26°C (79°F)28°C (82°F)29°C (84°F)29°C (85°F)
Perceived temperature34°C (94°F)34°C (93°F)34°C (93°F)35°C (95°F)28°C (83°F)31°C (87°F)33°C (91°F)34°C (94°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%77%76%72%70%69%72%75%
Barometric pressure1019 hPa1017 hPa1018 hPa1020 hPa1019 hPa1018 hPa1017 hPa1018 hPa
Cloud cover53%46%63%81%5%3%8%26%
Heat index34°C (94°F)34°C (93°F)34°C (93°F)35°C (95°F)28°C (83°F)31°C (87°F)33°C (91°F)34°C (94°F)
Dew point25°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)20°C (69°F)22°C (71°F)23°C (74°F)24°C (76°F)
Wind
Speed16km/h (10mph)17km/h (10mph)14km/h (9mph)11km/h (7mph)13km/h (8mph)17km/h (10mph)17km/h (11mph)16km/h (10mph)
Gusts23km/h (14mph)24km/h (15mph)20km/h (12mph)15km/h (9mph)26km/h (16mph)32km/h (20mph)28km/h (17mph)24km/h (15mph)
Direction 185°
S
179°
S
184°
S
185°
S
179°
S
187°
S
187°
S
180°
S
Wind chill29°C (84°F)29°C (84°F)29°C (84°F)30°C (86°F)26°C (79°F)28°C (82°F)29°C (84°F)29°C (85°F)
Waves
Height0.1m (0.5ft)0.1m (0.4ft)0.3m (0.9ft)0.4m (1.4ft)0.2m (0.8ft)0.5m (1.7ft)0.4m (1.2ft)0.2m (0.7ft)
Direction 193°
SSW
193°
SSW
194°
SSW
197°
SSW
200°
SSW
196°
SSW
188°
S
9999°
Period1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.3m (1ft)0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)
Sea water temperature
Water temperature31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)

Sea weather on Monday 21 July 2025

On Monday 21 July 2025, the sun will rise at 06:20 and will set at 20:06 on the beach(es) of Marsh Island. The outside temperature will be a high of 86°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 10.6mph km/h (with gusts up to 20.5mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (85°F)29°C (85°F)29°C (85°F)30°C (86°F)27°C (80°F)28°C (83°F)30°C (86°F)29°C (85°F)
Perceived temperature35°C (94°F)34°C (94°F)35°C (94°F)36°C (96°F)29°C (84°F)31°C (88°F)35°C (96°F)34°C (94°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%76%76%73%70%70%74%75%
Barometric pressure1017 hPa1016 hPa1017 hPa1018 hPa1018 hPa1016 hPa1016 hPa1016 hPa
Cloud cover54%76%33%31%88%3%22%21%
Heat index35°C (94°F)34°C (94°F)35°C (94°F)36°C (96°F)29°C (84°F)31°C (88°F)35°C (96°F)34°C (94°F)
Dew point25°C (76°F)25°C (76°F)25°C (76°F)25°C (76°F)21°C (69°F)22°C (72°F)25°C (76°F)24°C (76°F)
Wind
Speed16km/h (10mph)17km/h (10mph)16km/h (10mph)13km/h (8mph)14km/h (9mph)17km/h (11mph)16km/h (10mph)16km/h (10mph)
Gusts23km/h (14mph)24km/h (15mph)23km/h (15mph)18km/h (11mph)29km/h (18mph)33km/h (21mph)23km/h (14mph)23km/h (15mph)
Direction 179°
S
182°
S
195°
SSW
202°
SSW
183°
S
193°
SSW
207°
SSW
202°
SSW
Wind chill29°C (85°F)29°C (85°F)29°C (85°F)30°C (86°F)27°C (80°F)28°C (83°F)30°C (86°F)29°C (85°F)
Waves
Height0.2m (0.5ft)0.1m (0.5ft)0.1m (0.4ft)0.4m (1.4ft)0.3m (0.9ft)0.1m (0.3ft)0.2m (0.6ft)0.2m (0.6ft)
Direction 185°
S
179°
S
179°
S
182°
S
181°
S
185°
S
9999°
193°
SSW
Period1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.4m (1.3ft)
Sea water temperature
Water temperature29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)

Sea weather on Tuesday 22 July 2025

On Tuesday 22 July 2025, the sun will rise at 06:21 and will set at 20:06 on the beach(es) of Marsh Island. The outside temperature will be a high of 86°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 11.2mph km/h (with gusts up to 20.5mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (85°F)29°C (84°F)29°C (84°F)30°C (85°F)26°C (79°F)28°C (82°F)29°C (84°F)29°C (85°F)
Perceived temperature34°C (93°F)34°C (92°F)33°C (92°F)34°C (94°F)28°C (82°F)30°C (86°F)32°C (90°F)33°C (91°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%76%76%70%68%65%65%66%
Barometric pressure1016 hPa1016 hPa1017 hPa1018 hPa1018 hPa1016 hPa1016 hPa1017 hPa
Cloud cover6%24%55%40%0%0%9%14%
Heat index34°C (93°F)34°C (92°F)33°C (92°F)34°C (94°F)28°C (82°F)30°C (86°F)32°C (90°F)33°C (91°F)
Dew point24°C (75°F)24°C (76°F)24°C (76°F)24°C (74°F)20°C (67°F)21°C (69°F)22°C (71°F)22°C (72°F)
Wind
Speed16km/h (10mph)15km/h (10mph)15km/h (9mph)9km/h (6mph)12km/h (7mph)17km/h (11mph)18km/h (11mph)15km/h (10mph)
Gusts23km/h (14mph)22km/h (14mph)21km/h (13mph)12km/h (8mph)24km/h (15mph)33km/h (20mph)30km/h (19mph)23km/h (15mph)
Direction 199°
SSW
213°
SSW
233°
SW
243°
WSW
200°
SSW
224°
SW
225°
SW
239°
WSW
Wind chill29°C (85°F)29°C (84°F)29°C (84°F)30°C (85°F)26°C (79°F)28°C (82°F)29°C (84°F)29°C (85°F)
Waves
Height0.2m (0.8ft)0.2m (0.8ft)0.1m (0.5ft)0.3m (1.0ft)0.3m (0.9ft)0.2m (0.6ft)0.1m (0.5ft)0.2m (0.6ft)
Direction 193°
SSW
208°
SSW
215°
SW
214°
SW
213°
SSW
230°
SW
227°
SW
232°
SW
Period1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.3m (1ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.4m (1.3ft)0.4m (1.3ft)
Sea water temperature
Water temperature31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)

Sea weather on Wednesday 23 July 2025

On Wednesday 23 July 2025, the sun will rise at 06:21 and will set at 20:05 on the beach(es) of Marsh Island. The outside temperature will be a high of 90°F t and a low of 76°F. Precipitation is in the forecast (0.5in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 14.3mph km/h (with gusts up to 24.2mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (85°F)29°C (84°F)28°C (82°F)29°C (84°F)30°C (87°F)32°C (89°F)30°C (86°F)24°C (75°F)
Perceived temperature33°C (91°F)32°C (90°F)31°C (88°F)33°C (91°F)34°C (93°F)37°C (99°F)36°C (97°F)27°C (80°F)
Precipitation0in0in0in0in0in0in0in0.5in
Humidity67%67%74%71%60%63%74%93%
Barometric pressure1016 hPa1017 hPa1018 hPa1019 hPa1019 hPa1016 hPa1016 hPa1018 hPa
Cloud cover5%4%9%16%44%44%78%63%
Heat index33°C (91°F)32°C (90°F)31°C (88°F)33°C (91°F)34°C (93°F)37°C (99°F)36°C (97°F)27°C (80°F)
Dew point22°C (72°F)22°C (72°F)23°C (73°F)23°C (73°F)22°C (71°F)24°C (74°F)25°C (77°F)23°C (73°F)
Wind
Speed15km/h (9mph)11km/h (7mph)14km/h (9mph)13km/h (8mph)7km/h (4mph)14km/h (9mph)23km/h (14mph)17km/h (11mph)
Gusts23km/h (14mph)16km/h (10mph)21km/h (13mph)16km/h (10mph)10km/h (6mph)21km/h (13mph)39km/h (24mph)32km/h (20mph)
Direction 249°
WSW
271°
W
313°
NW
339°
NNW
333°
NNW
259°
WSW
264°
W
64°
ENE
Wind chill29°C (85°F)29°C (84°F)28°C (82°F)29°C (84°F)30°C (87°F)32°C (89°F)30°C (86°F)24°C (75°F)
Waves
Height0.2m (0.7ft)0.1m (0.5ft)0.1m (0.4ft)0.1m (0.5ft)0.2m (0.5ft)0.2m (0.5ft)0.2m (0.8ft)0.3m (0.9ft)
Direction 232°
SW
240°
WSW
261°
W
298°
WNW
296°
WNW
251°
WSW
248°
WSW
248°
WSW
Period1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.
Significant height0.5m (1.6ft)0.3m (1ft)0.4m (1.3ft)0.4m (1.3ft)0.2m (0.7ft)0.5m (1.6ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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