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Climate · Hoi An

Hoi An in September

Hot and wet, as the days shorten.

Typical weather, averaged over 30 years

September in Hoi An is hot: highs near 90°F, lows near 78°F. Rain falls on about five days a week, more often as the month goes on, and the days shorten by 19 minutes from the first week to the last.September in Hoi An is hot: highs near 32°C, lows near 26°C. Rain falls on about five days a week, more often as the month goes on, and the days shorten by 19 minutes from the first week to the last.

High
90°F32°Caverage
Low
78°F26°Caverage
Wet days
5a week · 77% of days
Daylight
12h 12mon average

Is September a good time to visit Hoi An?

September sits outside Hoi An's best months, which run from January to March. Expect hot days and rain on about five days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 90°F in September, against 78°F to 96°F through the year.Highs near 32°C in September, against 26°C to 36°C through the year.

Chance of a wet day

77% of days in September, against 29% to 83% through the year.

Cloud cover

80% cover in September, against 55% to 84% through the year.

Daylight

12h 12m in September, against 11h 12m to 13h 03m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August94°34°low 80°low 27°4 wet days a weekRain on about four days a week.
  2. September90°32°low 78°low 26°5 wet days a weekRain on about five days a week.
  3. October86°30°low 76°low 24°6 wet days a weekRain on about six days a week.

Where Hoi An sits, in September

Asia/Ho Chi Minh
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
5:35 AMsets 5:49 PM
Above the sea
0 mlow-lying
Latitude
15.9°Nnorthern hemisphere
Nearest of ours
Da Nang24 km north-west

The land around Hoi An, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Vietnam in September

high · low · wet days
See September on the planning mapThe whole year in Hoi An

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Hoi An. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.