The highest day temperature in May 2025 was 96°F. The lowest night temperature was 78°F. The average values for day and night temperatures during May were 92.5°F и 80.9°F respectivly.

The average sea surface temperature in May 2025 for Phan Thiet was 89.5°F. The maximum and minimum values were 88.2°F and 90.6°F respectively.

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation total in May for Phan Thiet is 2.9 in.

The average wind speed in May is 7.4 mph. It makes May one of the most windless months of the year for Phan Thiet.

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 Phan Thiet in May is 8.1 hours.