Sea weather in Cat Ba island in Vietnam All the beach weather in Cat Ba island

All the essential weather information for enjoying the beach in Cat Ba island in Vietnam, 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 Cat Ba island over the next 7 days?

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

Date Outside temp. Our opinion
Wednesday 3 June 202685°F to 90°Frecommended
Thursday 4 June 202685°F to 92°Frecommended
Friday 5 June 202685°F to 92°Frecommended
Saturday 6 June 202683°F to 90°Frecommended
Sunday 7 June 202685°F to 88°Frecommended
Monday 8 June 202683°F to 92°Frecommended
Tuesday 9 June 202674°F to 79°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Cat Ba island

Sea weather on Wednesday 3 June 2026

On Wednesday 3 June 2026, the sun will rise at 05:11 and will set at 18:30 on the beach(es) of Cat Ba island. The outside temperature will be a high of 90°F t and a low of 85°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 18.6mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (83°F)29°C (83°F)29°C (84°F)31°C (88°F)31°C (89°F)31°C (88°F)29°C (84°F)29°C (84°F)
Perceived temperature34°C (92°F)33°C (92°F)34°C (93°F)37°C (99°F)38°C (100°F)37°C (99°F)34°C (93°F)35°C (96°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%79%77%68%67%69%77%84%
Barometric pressure1005 hPa1003 hPa1004 hPa1004 hPa1003 hPa1001 hPa1000 hPa1003 hPa
Cloud cover7%21%35%21%50%36%14%100%
Heat index34°C (92°F)33°C (92°F)34°C (93°F)37°C (99°F)38°C (100°F)37°C (99°F)34°C (93°F)35°C (96°F)
Dew point25°C (76°F)24°C (76°F)25°C (76°F)25°C (76°F)24°C (76°F)25°C (76°F)25°C (76°F)26°C (79°F)
Wind
Speed12km/h (8mph)14km/h (9mph)14km/h (9mph)17km/h (11mph)18km/h (11mph)15km/h (10mph)18km/h (11mph)11km/h (7mph)
Gusts19km/h (12mph)22km/h (14mph)20km/h (13mph)19km/h (12mph)22km/h (14mph)19km/h (12mph)30km/h (18mph)17km/h (10mph)
Direction 174°
S
175°
S
163°
SSE
165°
SSE
167°
SSE
147°
SSE
115°
ESE
115°
ESE
Wind chill29°C (83°F)29°C (83°F)29°C (84°F)31°C (88°F)31°C (89°F)31°C (88°F)29°C (84°F)29°C (84°F)
Waves
Height0.6m (2.0ft)0.8m (2.5ft)0.9m (2.9ft)0.9m (2.9ft)0.9m (2.8ft)0.8m (2.8ft)0.8m (2.6ft)0.7m (2.4ft)
Direction 163°
SSE
164°
SSE
165°
SSE
162°
SSE
161°
SSE
160°
SSE
160°
SSE
159°
SSE
Period1.0 sec.1.0 sec.1.0 sec.1.0 sec.1.0 sec.1.0 sec.1.0 sec.1.0 sec.
Significant height1.4m (4.6ft)1.5m (4.9ft)1.5m (4.9ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Thursday 4 June 2026

On Thursday 4 June 2026, the sun will rise at 05:11 and will set at 18:31 on the beach(es) of Cat Ba island. The outside temperature will be a high of 92°F t and a low of 85°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 3ft 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)32°C (89°F)30°C (85°F)31°C (87°F)30°C (87°F)30°C (86°F)
Perceived temperature36°C (97°F)36°C (97°F)37°C (99°F)41°C (105°F)33°C (92°F)35°C (95°F)37°C (98°F)37°C (99°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity86%87%87%74%65%66%74%83%
Barometric pressure1002 hPa1001 hPa1001 hPa1003 hPa1001 hPa999 hPa999 hPa1002 hPa
Cloud cover59%27%75%11%9%13%13%21%
Heat index36°C (97°F)36°C (97°F)37°C (99°F)41°C (105°F)33°C (92°F)35°C (95°F)37°C (98°F)37°C (99°F)
Dew point26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)22°C (72°F)23°C (74°F)25°C (77°F)27°C (80°F)
Wind
Speed12km/h (8mph)11km/h (7mph)15km/h (10mph)15km/h (9mph)13km/h (8mph)18km/h (11mph)15km/h (9mph)10km/h (6mph)
Gusts18km/h (11mph)17km/h (11mph)23km/h (14mph)18km/h (11mph)28km/h (17mph)33km/h (20mph)25km/h (15mph)16km/h (10mph)
Direction 120°
ESE
133°
SE
168°
SSE
175°
S
156°
SSE
142°
SE
116°
ESE
114°
ESE
Wind chill29°C (84°F)29°C (84°F)29°C (85°F)32°C (89°F)30°C (85°F)31°C (87°F)30°C (87°F)30°C (86°F)
Waves
Height0.6m (2.1ft)0.6m (2.1ft)0.9m (2.9ft)0.9m (3.1ft)0.8m (2.8ft)0.7m (2.4ft)0.7m (2.2ft)0.6m (1.9ft)
Direction 159°
SSE
159°
SSE
162°
SSE
162°
SSE
160°
SSE
158°
SSE
157°
SSE
158°
SSE
Period1.0 sec.1.0 sec.1.0 sec.1.0 sec.5.9 sec.5.9 sec.5.9 sec.5.9 sec.
Significant height1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.3m (4.3ft)1.4m (4.6ft)1.4m (4.6ft)1.3m (4.3ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Friday 5 June 2026

On Friday 5 June 2026, the sun will rise at 05:11 and will set at 18:31 on the beach(es) of Cat Ba island. The outside temperature will be a high of 92°F t and a low of 85°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 9.3mph km/h (with gusts up to 16.2mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (84°F)29°C (85°F)29°C (85°F)31°C (89°F)33°C (91°F)32°C (89°F)29°C (84°F)29°C (84°F)
Perceived temperature36°C (96°F)36°C (97°F)36°C (97°F)39°C (102°F)39°C (103°F)39°C (103°F)34°C (94°F)35°C (95°F)
Precipitation0in0in0.1in0in0in0in0in0.1in
Humidity84%83%84%72%63%71%82%83%
Barometric pressure1002 hPa1001 hPa1002 hPa1003 hPa1002 hPa1001 hPa1001 hPa1003 hPa
Cloud cover82%29%77%21%80%72%12%53%
Heat index36°C (96°F)36°C (97°F)36°C (97°F)39°C (102°F)39°C (103°F)39°C (103°F)34°C (94°F)35°C (95°F)
Dew point26°C (79°F)26°C (79°F)26°C (79°F)26°C (78°F)25°C (76°F)26°C (78°F)25°C (78°F)26°C (78°F)
Wind
Speed9km/h (6mph)8km/h (5mph)10km/h (6mph)10km/h (6mph)12km/h (7mph)7km/h (4mph)15km/h (9mph)12km/h (8mph)
Gusts17km/h (10mph)14km/h (9mph)16km/h (10mph)12km/h (8mph)16km/h (10mph)10km/h (6mph)26km/h (16mph)21km/h (13mph)
Direction 93°
E
164°
SSE
179°
S
232°
SW
170°
S
119°
ESE
74°
ENE
104°
ESE
Wind chill29°C (84°F)29°C (85°F)29°C (85°F)31°C (89°F)33°C (91°F)32°C (89°F)29°C (84°F)29°C (84°F)
Waves
Height0.5m (1.7ft)0.8m (2.5ft)0.9m (3.0ft)0.8m (2.7ft)0.7m (2.5ft)0.7m (2.3ft)0.6m (1.9ft)0.5m (1.7ft)
Direction 158°
SSE
162°
SSE
164°
SSE
163°
SSE
162°
SSE
162°
SSE
163°
SSE
164°
SSE
Period5.1 sec.5.1 sec.5.1 sec.5.6 sec.5.6 sec.5.6 sec.5.5 sec.5.3 sec.
Significant height0.8m (2.6ft)1.5m (4.9ft)1.4m (4.6ft)1.3m (4.3ft)1.4m (4.6ft)1.4m (4.6ft)0.8m (2.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Saturday 6 June 2026

On Saturday 6 June 2026, the sun will rise at 05:11 and will set at 18:32 on the beach(es) of Cat Ba island. The outside temperature will be a high of 90°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 11.2mph km/h (with gusts up to 17.4mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (85°F)29°C (83°F)29°C (84°F)31°C (87°F)32°C (89°F)32°C (89°F)30°C (86°F)30°C (85°F)
Perceived temperature36°C (96°F)34°C (93°F)34°C (93°F)37°C (98°F)38°C (101°F)38°C (101°F)37°C (99°F)37°C (98°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%81%81%70%68%69%78%83%
Barometric pressure1003 hPa1001 hPa1003 hPa1004 hPa1002 hPa1001 hPa1001 hPa1003 hPa
Cloud cover45%22%26%46%47%75%30%46%
Heat index36°C (96°F)34°C (93°F)34°C (93°F)37°C (98°F)38°C (101°F)38°C (101°F)37°C (99°F)37°C (98°F)
Dew point26°C (79°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)26°C (79°F)26°C (79°F)
Wind
Speed5km/h (3mph)4km/h (2mph)2km/h (1mph)5km/h (3mph)13km/h (8mph)18km/h (11mph)17km/h (11mph)18km/h (11mph)
Gusts9km/h (6mph)7km/h (4mph)3km/h (2mph)6km/h (4mph)16km/h (10mph)23km/h (14mph)24km/h (15mph)28km/h (18mph)
Direction 200°
SSW
279°
W
238°
WSW
250°
WSW
162°
SSE
170°
S
154°
SSE
146°
SE
Wind chill29°C (85°F)29°C (83°F)29°C (84°F)31°C (87°F)32°C (89°F)32°C (89°F)30°C (86°F)30°C (85°F)
Waves
Height0.4m (1.5ft)0.4m (1.3ft)0.5m (1.5ft)0.6m (2.0ft)0.7m (2.2ft)0.8m (2.6ft)0.9m (2.9ft)1.0m (3.2ft)
Direction 164°
SSE
165°
SSE
167°
SSE
173°
S
168°
SSE
169°
SSE
171°
S
172°
S
Period5.1 sec.4.9 sec.9.0 sec.8.4 sec.8.1 sec.8.1 sec.8.1 sec.8.1 sec.
Significant height0.7m (2.3ft)0.6m (2ft)0.4m (1.3ft)0.6m (2ft)1.4m (4.6ft)1.6m (5.2ft)1.5m (4.9ft)1.5m (4.9ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Sunday 7 June 2026

On Sunday 7 June 2026, the sun will rise at 05:11 and will set at 18:32 on the beach(es) of Cat Ba island. The outside temperature will be a high of 88°F t and a low of 85°F. Precipitation is in the forecast (0.1in 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 11.2mph km/h (with gusts up to 17.4mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (84°F)29°C (85°F)30°C (85°F)31°C (88°F)31°C (89°F)31°C (88°F)30°C (86°F)30°C (85°F)
Perceived temperature36°C (97°F)36°C (98°F)37°C (98°F)38°C (101°F)38°C (100°F)38°C (101°F)37°C (99°F)37°C (98°F)
Precipitation0.1in0in0in0in0in0in0in0in
Humidity85%83%82%72%68%71%80%83%
Barometric pressure1002 hPa1001 hPa1002 hPa1003 hPa1001 hPa1000 hPa1000 hPa1001 hPa
Cloud cover70%60%59%53%46%24%25%25%
Heat index36°C (97°F)36°C (98°F)37°C (98°F)38°C (101°F)38°C (100°F)38°C (101°F)37°C (99°F)37°C (98°F)
Dew point26°C (79°F)26°C (79°F)26°C (79°F)25°C (78°F)25°C (76°F)25°C (78°F)26°C (79°F)26°C (79°F)
Wind
Speed17km/h (11mph)18km/h (11mph)15km/h (10mph)15km/h (10mph)14km/h (9mph)15km/h (9mph)14km/h (9mph)13km/h (8mph)
Gusts28km/h (17mph)27km/h (17mph)23km/h (14mph)19km/h (12mph)18km/h (11mph)20km/h (12mph)21km/h (13mph)22km/h (13mph)
Direction 173°
S
182°
S
187°
S
187°
S
176°
S
165°
SSE
143°
SE
135°
SE
Wind chill29°C (84°F)29°C (85°F)30°C (85°F)31°C (88°F)31°C (89°F)31°C (88°F)30°C (86°F)30°C (85°F)
Waves
Height1.2m (3.8ft)1.2m (4.0ft)1.2m (3.8ft)1.0m (3.3ft)0.9m (2.8ft)0.8m (2.6ft)0.7m (2.4ft)0.7m (2.3ft)
Direction 175°
S
177°
S
174°
S
174°
S
175°
S
175°
S
174°
S
173°
S
Period8.1 sec.8.1 sec.8.1 sec.7.2 sec.6.2 sec.6.1 sec.6.1 sec.5.8 sec.
Significant height1.6m (5.2ft)1.6m (5.2ft)1.5m (4.9ft)1.4m (4.6ft)1.3m (4.3ft)1.2m (3.9ft)1.3m (4.3ft)1.1m (3.6ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (85°F)

Sea weather on Monday 8 June 2026

On Monday 8 June 2026, the sun will rise at 05:11 and will set at 18:32 on the beach(es) of Cat Ba island. The outside temperature will be a high of 92°F t and a low of 83°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 6.2mph km/h (with gusts up to 10.6mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (85°F)29°C (85°F)30°C (86°F)32°C (89°F)33°C (91°F)32°C (90°F)31°C (87°F)29°C (84°F)
Perceived temperature37°C (98°F)36°C (98°F)37°C (98°F)39°C (101°F)39°C (103°F)39°C (101°F)38°C (100°F)35°C (95°F)
Precipitation0in0in0in0in0in0in0in0.2in
Humidity84%83%81%70%62%65%73%81%
Barometric pressure1000 hPa999 hPa1000 hPa1000 hPa999 hPa998 hPa999 hPa1000 hPa
Cloud cover30%31%30%22%40%44%54%86%
Heat index37°C (98°F)36°C (98°F)37°C (98°F)39°C (101°F)39°C (103°F)39°C (101°F)38°C (100°F)35°C (95°F)
Dew point26°C (80°F)26°C (79°F)26°C (79°F)25°C (78°F)24°C (76°F)25°C (76°F)25°C (78°F)25°C (78°F)
Wind
Speed9km/h (6mph)10km/h (6mph)10km/h (6mph)5km/h (3mph)4km/h (2mph)5km/h (3mph)8km/h (5mph)7km/h (4mph)
Gusts15km/h (10mph)17km/h (11mph)15km/h (9mph)6km/h (4mph)4km/h (3mph)8km/h (5mph)12km/h (7mph)12km/h (8mph)
Direction 125°
SE
167°
SSE
202°
SSW
207°
SSW
177°
S
167°
SSE
111°
ESE
167°
SSE
Wind chill29°C (85°F)29°C (85°F)30°C (86°F)32°C (89°F)33°C (91°F)32°C (90°F)31°C (87°F)29°C (84°F)
Waves
Height0.6m (2.0ft)0.7m (2.3ft)0.8m (2.6ft)0.7m (2.3ft)0.6m (2.0ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)
Direction 172°
S
173°
S
171°
S
171°
S
172°
S
172°
S
171°
S
171°
S
Period5.6 sec.5.4 sec.5.9 sec.6.1 sec.5.9 sec.5.6 sec.5.6 sec.5.7 sec.
Significant height0.9m (3ft)1.0m (3.3ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather on Tuesday 9 June 2026

On Tuesday 9 June 2026, the sun will rise at 05:11 and will set at 18:33 on the beach(es) of Cat Ba island. The outside temperature will be a high of 79°F t and a low of 74°F. A total of 0.8in of precipitation could spoil your day at the beach. The sea will be generally calm, with a wind speed of up to 11.2mph km/h (with gusts up to 18.6mph). 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)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)24°C (75°F)23°C (74°F)24°C (74°F)
Perceived temperature32°C (89°F)28°C (83°F)27°C (81°F)28°C (82°F)28°C (82°F)26°C (79°F)25°C (78°F)26°C (78°F)
Precipitation0.4in0.3in0.1in0in0in0in0in0in
Humidity92%95%93%91%87%86%83%80%
Barometric pressure1000 hPa1000 hPa1002 hPa1003 hPa1003 hPa1003 hPa1004 hPa1006 hPa
Cloud cover95%82%75%91%92%72%48%79%
Heat index32°C (89°F)28°C (83°F)27°C (81°F)28°C (82°F)28°C (82°F)26°C (79°F)25°C (78°F)26°C (78°F)
Dew point25°C (78°F)24°C (76°F)23°C (74°F)23°C (74°F)23°C (73°F)22°C (71°F)20°C (68°F)20°C (68°F)
Wind
Speed13km/h (8mph)18km/h (11mph)12km/h (7mph)10km/h (6mph)12km/h (7mph)14km/h (9mph)14km/h (9mph)10km/h (6mph)
Gusts21km/h (13mph)30km/h (19mph)19km/h (12mph)13km/h (8mph)16km/h (10mph)20km/h (12mph)23km/h (14mph)16km/h (10mph)
Direction 95°
E
239°
WSW
345°
NNW
340°
NNW
340°
NNW
349°
NNW
122°
ESE

N
Wind chill27°C (80°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)24°C (75°F)23°C (74°F)24°C (74°F)
Waves
Height0.4m (1.3ft)0.4m (1.3ft)0.5m (1.6ft)0.6m (2.0ft)0.6m (2.0ft)0.6m (2.0ft)0.6m (2.0ft)0.6m (2.0ft)
Direction 172°
S
173°
S
171°
S
172°
S
171°
S
171°
S
171°
S
171°
S
Period5.5 sec.5.3 sec.5.6 sec.6.0 sec.6.0 sec.6.1 sec.6.1 sec.6.0 sec.
Significant height0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)1.0m (3.3ft)0.9m (3ft)0.9m (3ft)1.0m (3.3ft)0.9m (3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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