The highest day temperature in May 2026 was 103°F. The lowest night temperature was 71°F. The average values for day and night temperatures during May were 92.2°F и 82.1°F respectivly.

The average sea surface temperature in May 2026 for Hai Phong was 86.6°F. The maximum and minimum values were 82.2°F and 92.8°F respectively.

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

Precipitation total in May for Hai Phong is 3.0 in.

The average wind speed in May is 8.5 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 Hai Phong in May is 7.3 hours.