Hoi An weather by month
Hoi An is warmest in June (34°C average high) and coolest in January (24°C). For warm, mostly dry weather, go March to April. The sea is warm enough for easy swimming all year.
Warmest month
June
34°C
Coolest month
January
24°C
Wettest month
December
27 rainy days
Flight from London
12h
direct, estimated
Hoi An temperature by month
Tap a month for the detail and warmer alternatives.
When to go to Hoi An
What is the best month to visit Hoi An for sun?
For warm, mostly dry days, go March to April, going by our 10-year averages.
What is the hottest month in Hoi An?
June averages 34°C. January is the coolest at 24°C.
When does it rain most in Hoi An?
December, with about 27 wet days.
When is the sea warm enough to swim in Hoi An?
all year, when the sea averages 21°C or more.
How we measured this
Daily averages from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis); sea temperatures are 2023 to 2025 averages from the Open-Meteo marine archive. A rainy day has at least 1 mm of rain.
Going to Hoi An?
Save the places you find on TikTok and Instagram for Hoi An to one map, and Dream Trip will plan the days around them.
