Weather in Cat Ba Island: October
| Average day temperature: | 82.6°F | |
| Average night temperature: | 77.0°F | |
| Sea water temperature: | 82.7°F | |
| Number of sunny days: | 14 days | |
| Day length: | 11.4 - 12.0 hours | |
| Number of rainy days: | 5 days | |
| Precipitation totals: | 4.1 in. | |
| more information | ||
forecast
| Cat Ba Island |
temperature
| Cat Ba Island |
Air temperature in October, °F
The highest day temperature during October of 2025 was 88°F. At the same time the lowest night temperature was 64°F. Daily and nightly averages during October were 80.1°F and 75.6°F.
Sea water temperature in Cat Ba Island in October, °F
The average sea water temperature in October of 2025 was 83.0°F. The highest and lowest sea temperatures during the month were 84.7°F and 79.7°F.
Number of sunny, partly cloudy and cloudy days in October is almost equal.
Precipitation total in October, in.
Precipitation total value in Cat Ba Island in October is 3.8 in. Other months of the year show relatively similar values.
The average wind speed value in October is 9.9 mph It makes October one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in October is: 5.9.
Best time for vacation in Cat Ba Island
Cat Ba Island on a weather map

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