18.09
fri
fri
Day
72°F
SW 17 mph
Precip.
5%
5%
Night
66°F
SW 12 mph
Precip.
22%
22%
19.09
sat
sat
Day
70°F
SW 11 mph
Precip.
25%
25%
Night
68°F
SW 4 mph
Precip.
32%
32%
20.09
sun
sun
Day
70°F
SW 4 mph
Precip.
34%
34%
Night
68°F
S 11 mph
Precip.
95%
95%
21.09
mon
mon
Day
82°F
NW 5 mph
Precip.
3%
3%
Night
70°F
W 2 mph
Precip.
23%
23%
22.09
tue
tue
Day
73°F
W 6 mph
Precip.
4%
4%
Night
68°F
W 3 mph
Precip.
35%
35%
23.09
wed
wed
Day
73°F
SW 3 mph
Precip.
17%
17%
Night
68°F
E 4 mph
Precip.
21%
21%
24.09
thu
thu
Day
79°F
E 6 mph
Precip.
3%
3%
Night
68°F
W 6 mph
Precip.
15%
15%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 78.9°F. The highest and lowest sea temperatures during the month were 80.2°F and 76.6°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 75.1°F. The highest and lowest sea temperatures during the month were 76.8°F and 73.0°F.
Air temperature in Atami, °F
Precipitation total in Atami, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Atami
Atami on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Atami
Local time: 10:13
September 18, friday
1200
72°F
SW
17 mph
17 mph
1500
72°F
SW
18 mph
18 mph
1800
66°F
SW
14 mph
14 mph
2100
66°F
SW
13 mph
13 mph
September 19, saturday
0000
66°F
SW
12 mph
12 mph
0300
66°F
SW
7 mph
7 mph
0600
66°F
W
8 mph
8 mph
0900
70°F
SW
11 mph
11 mph
