World Resorts Vietnam Cat Ba Island Weather

Cat Ba Island 7 Days Forecast

16.09
wed
Day
77°F
SW 11 mph
Precip.
71%
Night
77°F
SW 7 mph
Precip.
58%
17.09
thu
Day
75°F
NE 2 mph
Precip.
76%
Night
77°F
SW 6 mph
Precip.
35%
18.09
fri
Day
81°F
W 14 mph
Precip.
58%
Night
79°F
SW 12 mph
Precip.
60%
19.09
sat
Day
82°F
W 18 mph
Precip.
42%
Night
81°F
SW 11 mph
Precip.
9%
20.09
sun
Day
84°F
W 13 mph
Precip.
5%
Night
81°F
W 4 mph
Precip.
7%
21.09
mon
Day
84°F
W 8 mph
Precip.
5%
Night
81°F
W 4 mph
Precip.
10%
22.09
tue
Day
84°F
W 8 mph
Precip.
15%
Night
81°F
W 8 mph
Precip.
8%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 85.6°F. The highest and lowest sea temperatures during the month were 86.5°F and 84.6°F.

Air temperature in Cat Ba Island, °F

Precipitation total in Cat Ba Island, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Cat Ba Island

Sunniest months:
October 14 days
June 12 days
September 12 days
Warmest months:
August 88.8 °F
July 88.7 °F
June 88.2 °F
Warmest sea temp:
July 86.8 °F
August 86.6 °F
June 86.4 °F
Coldest months:
January 66.9 °F
February 68.3 °F
December 69.3 °F
Rainiest months:
August 14 days
July 14 days
June 12 days
Windiest months:
June 10.6 mph
July 10.0 mph
October 9.7 mph

Cat Ba Island on a weather map

Current weather
09:09
Cat Ba Island
+77°F
W 11 mph
Feels like: +81°F
Precip.: 78%
Places in Vietnam:
Name
°F
Vinpearl
+82°F
Vung Tau
+84°F
Da Lat
+75°F
Da Nang
+81°F
Doc Let Beach
+82°F
Cam Ranh
+82°F
Mui Ne
+86°F
Nha Trang
+82°F
Phan Rang
+82°F
Phan Thiet
+86°F
Phu Quoc
+84°F
Ha Noi
+73°F
Ha Long
+73°F
Hoi An
+81°F
Ho Chi Minh
+86°F
all places
24 Hours Forecast
Cat Ba Island
Local time: 09:09
September 16, wednesday
1200
77°F
SW
11 mph
1500
77°F
SW
11 mph
1800
79°F
SW
11 mph
2100
79°F
SW
8 mph
September 17, thursday
0000
77°F
SW
7 mph
0300
77°F
SW
7 mph
0600
75°F
W
4 mph
0900
75°F
SW
1 mph
Units of measurement: °C / °F