19.09
sat
sat
Day

73°F
W 12 mph
Precip.
21%
21%
Night

70°F
SW 11 mph
Precip.
41%
41%
20.09
sun
sun
Day

66°F
SW 12 mph
Precip.
77%
77%
Night

66°F
SW 11 mph
Precip.
79%
79%
21.09
mon
mon
Day

72°F
SW 19 mph
Precip.
72%
72%
Night

73°F
E 6 mph
Precip.
44%
44%
22.09
tue
tue
Day

77°F
W 9 mph
Precip.
19%
19%
Night

68°F
W 9 mph
Precip.
76%
76%
23.09
wed
wed
Day

66°F
SW 8 mph
Precip.
45%
45%
Night

64°F
SW 5 mph
Precip.
50%
50%
24.09
thu
thu
Day

66°F
W 5 mph
Precip.
41%
41%
Night

66°F
SW 3 mph
Precip.
58%
58%
25.09
fri
fri
Day

73°F
W 4 mph
Precip.
35%
35%
Night

70°F
E 3 mph
Precip.
20%
20%
26.09
sat
sat
Day

75°F
W 6 mph
Precip.
35%
35%
Night

63°F
SW 10 mph
Precip.
54%
54%
27.09
sun
sun
Day

66°F
SW 10 mph
Precip.
25%
25%
Night

63°F
W 4 mph
Precip.
44%
44%
28.09
mon
mon
Day

73°F
E 6 mph
Precip.
31%
31%
Night

70°F
E 4 mph
Precip.
49%
49%
29.09
tue
tue
Day

66°F
W 4 mph
Precip.
79%
79%
Night

68°F
E 4 mph
Precip.
70%
70%
30.09
wed
wed
Day

72°F
NE 11 mph
Precip.
50%
50%
Night

73°F
NE 18 mph
Precip.
34%
34%
01.10
thu
thu
Day

70°F
W 5 mph
Precip.
19%
19%
Night

64°F
SW 7 mph
Precip.
43%
43%
02.10
fri
fri
Day

63°F
SW 7 mph
Precip.
64%
64%
Night

61°F
W 7 mph
Precip.
39%
39%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 78.7°F. The highest and lowest sea temperatures during the month were 80.2°F and 76.1°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: 15:44
September 19, saturday
1800

70°F
W
9 mph
9 mph
2100

70°F
SW
11 mph
11 mph
September 20, sunday
0000

70°F
SW
11 mph
11 mph
0300

68°F
SW
11 mph
11 mph
0600

68°F
SW
14 mph
14 mph
0900

68°F
SW
14 mph
14 mph
1200

66°F
SW
12 mph
12 mph
1500

68°F
SW
13 mph
13 mph


























