14.09
mon
mon
Day
79°F
N 3 mph
Precip.
25%
25%
Night
79°F
NW 4 mph
Precip.
34%
34%
15.09
tue
tue
Day
81°F
W 7 mph
Precip.
12%
12%
Night
77°F
N 4 mph
Precip.
77%
77%
16.09
wed
wed
Day
81°F
SW 6 mph
Precip.
56%
56%
Night
77°F
NE 3 mph
Precip.
24%
24%
17.09
thu
thu
Day
82°F
W 6 mph
Precip.
20%
20%
Night
77°F
NE 5 mph
Precip.
28%
28%
18.09
fri
fri
Day
82°F
SW 7 mph
Precip.
13%
13%
Night
79°F
E 6 mph
Precip.
58%
58%
19.09
sat
sat
Day
82°F
W 6 mph
Precip.
9%
9%
Night
77°F
E 3 mph
Precip.
22%
22%
20.09
sun
sun
Day
82°F
SW 6 mph
Precip.
14%
14%
Night
77°F
E 5 mph
Precip.
24%
24%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 86.4°F and 84.0°F.
Air temperature in Hoi An, °F
Precipitation total in Hoi An, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Hoi An
Hoi An on a weather map
Places in Vietnam:
Name
°F
24 Hours Forecast
Hoi An
Local time: 12:56
September 14, monday
1500
81°F
W
4 mph
4 mph
1800
79°F
NW
8 mph
8 mph
2100
79°F
NW
6 mph
6 mph
September 15, tuesday
0000
79°F
NW
4 mph
4 mph
0300
77°F
N
5 mph
5 mph
0600
77°F
NE
5 mph
5 mph
0900
79°F
N
4 mph
4 mph
1200
81°F
W
7 mph
7 mph
