Measurements:
°C
°F
CURRENT WEATHER
22:37
Hoi An
82°F
S 14 mph
Feels like: 90°F
Precip: 81%
World Resorts Vietnam Hoi An Weather

7 Day Weather Forecast

09.11
fri
DAY
86°F
S 12 mph
precip
58%
NIGHT
82°F
S 14 mph
precip
81%
09.12
sat
DAY
80°F
S 21 mph
precip
95%
NIGHT
78°F
SE 9 mph
precip
86%
09.13
sun
DAY
80°F
E 9 mph
precip
88%
NIGHT
76°F
NE 13 mph
precip
96%
09.14
mon
DAY
78°F
NE 17 mph
precip
31%
NIGHT
82°F
NE 15 mph
precip
23%
09.15
tue
DAY
84°F
SW 8 mph
precip
24%
NIGHT
82°F
E 6 mph
precip
50%
09.16
wed
DAY
86°F
SW 6 mph
precip
54%
NIGHT
80°F
E 6 mph
precip
59%
09.17
thu
DAY
86°F
SW 6 mph
precip
30%
NIGHT
80°F
E 6 mph
precip
76%

Hoi An Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Hoi An was 29.4°F. The maximum and minimum values were 28.9°F and 30.2°F respectively.

Hoi An on the Weather Map

Best Time to Visit Hoi An
The most sunny months:
April 17 days
May 16 days
June 16 days
The most warm months:
June 95.4 °F
August 94.7 °F
July 94.1 °F
Warmest sea temperature:
August 89.5 °F
September 89.4 °F
July 88.4 °F
The most cold months:
January 76.6 °F
December 77.5 °F
February 79.0 °F
The most rainy months:
December 15 days
November 14 days
October 13 days
The most windy months:
December 7 mph
November 7 mph
April 7 mph
more details