The highest day temperature in March 2025 was 103°F. The lowest night temperature was 56°F. The average values for day and night temperatures during March were 82.1°F и 65.6°F respectivly.

The average sea surface temperature in March 2025 for Hainan was 76.1°F. The maximum and minimum values were 72.4°F and 77.6°F respectively.

You can expect various weather conditions during March. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in March for Hainan is 2.6 in. It makes march one of the least rainy months of the year.

The average wind speed in March is 4.4 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 Hainan in March is 6.2 hours.