Is Haiphong hot in May?
Days are typically hot at 30.5°C, while nights average 24.2°C.
Vietnam · 1991–2020 normal
Typical May weather in Haiphong: 30.5°C by day, 24.2°C at night, 188 mm of rain over 8.8 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, May scores 35 out of 100 (December leads the year at 93). Daylight is calculated as 13 h 07 from latitude 20.86°. Open-water sea temperature is 27.3°C (27 km from the place centre).
May at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically hot at 30.5°C, while nights average 24.2°C.
The measured monthly average is 188 mm across about 9 wet days.
There are about 13 h 07 between sunrise and sunset at mid-month, calculated from the place latitude.
May ranks 8 of 12 in our weather comparison; December ranks first.
Event window
The nearest open-water NOAA OISST 1991–2020 cell averages 27.3°C in May. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
Next step
The weather comparison for Haiphong is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work