Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
September verdict
Hai Phong, Vietnam in September
Weather score57Good
Good for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 6h per day, enough for a balanced month. Rainfall averages 212mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
31°C
Rain
212mm
Sun
6h
Sea
30°C
Weather score
57
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 212mm, so showers are a real planning factor.
Some sun
Sunshine averages 6h per day, enough for a balanced month.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Hai Phong, Vietnam with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September31°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
September212mm average rain
September is wetter than Hai Phong's yearly average, so flexible plans matter more.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6 hours average sun
September is brighter than Hai Phong's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to October
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September30°C average sea
September is one of Hai Phong's warmest sea months, when swimming comfort is usually strongest.
Warmest seaMay to October
Sea temperatures are usually near 27°C in this stretch, so swimming comfort is at its strongest.
Weather score
September57 weather score
September sits close to Hai Phong's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsApril and October to November
These months have the strongest weather score in the monthly averages.
