The highest day temperature in July 2026 was 93°F. The lowest night temperature was 82°F. The average values for day and night temperatures during July were 89.8°F и 85.0°F respectivly.

The average sea surface temperature in July 2026 for Cat Ba Island was 90.8°F. The maximum and minimum values were 88.8°F and 92.4°F respectively.

Most of the days in July are cloudy but you can also expect sunny or gloomy days.

Precipitation total in July for Cat Ba Island is 10.8 in. It makes july one of the most rainy months of the year.

The average wind speed in July is 10.0 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cat Ba Island in July is 7.6 hours.