14.09
mon
mon
Day
79°F
N 4 mph
Precip.
28%
28%
Night
77°F
N 6 mph
Precip.
65%
65%
15.09
tue
tue
Day
82°F
NW 6 mph
Precip.
24%
24%
Night
79°F
N 5 mph
Precip.
74%
74%
16.09
wed
wed
Day
81°F
W 6 mph
Precip.
27%
27%
Night
77°F
NE 4 mph
Precip.
41%
41%
17.09
thu
thu
Day
79°F
N 2 mph
Precip.
27%
27%
Night
77°F
NE 5 mph
Precip.
20%
20%
18.09
fri
fri
Day
82°F
SW 7 mph
Precip.
8%
8%
Night
79°F
E 4 mph
Precip.
44%
44%
19.09
sat
sat
Day
82°F
W 6 mph
Precip.
16%
16%
Night
79°F
NE 3 mph
Precip.
57%
57%
20.09
sun
sun
Day
82°F
SW 6 mph
Precip.
8%
8%
Night
79°F
E 6 mph
Precip.
23%
23%
21.09
mon
mon
Day
82°F
SW 9 mph
Precip.
28%
28%
Night
79°F
E 3 mph
Precip.
23%
23%
22.09
tue
tue
Day
82°F
W 5 mph
Precip.
20%
20%
Night
77°F
NE 5 mph
Precip.
26%
26%
23.09
wed
wed
Day
82°F
SW 5 mph
Precip.
19%
19%
Night
79°F
E 5 mph
Precip.
42%
42%
24.09
thu
thu
Day
82°F
SW 8 mph
Precip.
24%
24%
Night
77°F
E 6 mph
Precip.
26%
26%
25.09
fri
fri
Day
82°F
S 11 mph
Precip.
36%
36%
Night
77°F
E 6 mph
Precip.
47%
47%
26.09
sat
sat
Day
82°F
SW 8 mph
Precip.
31%
31%
Night
77°F
E 3 mph
Precip.
35%
35%
27.09
sun
sun
Day
82°F
SW 8 mph
Precip.
25%
25%
Night
79°F
NE 4 mph
Precip.
40%
40%
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: 03:47
September 14, monday
0600
75°F
NE
4 mph
4 mph
0900
77°F
N
6 mph
6 mph
1200
79°F
N
4 mph
4 mph
1500
79°F
NW
5 mph
5 mph
1800
79°F
NW
11 mph
11 mph
2100
79°F
NW
7 mph
7 mph
September 15, tuesday
0000
77°F
N
6 mph
6 mph
0300
77°F
N
6 mph
6 mph
