World Resorts Japan Hakone Weather

Hakone 14 Days Forecast

18.09
fri
Day
75°F
SW 22 mph
Precip.
4%
Night
70°F
S 17 mph
Precip.
18%
19.09
sat
Day
73°F
S 14 mph
Precip.
21%
Night
72°F
S 19 mph
Precip.
36%
20.09
sun
Day
72°F
S 19 mph
Precip.
78%
Night
72°F
S 23 mph
Precip.
94%
21.09
mon
Day
81°F
N 6 mph
Precip.
4%
Night
75°F
NW 5 mph
Precip.
21%
22.09
tue
Day
77°F
W 6 mph
Precip.
3%
Night
73°F
SW 2 mph
Precip.
23%
23.09
wed
Day
77°F
NW 6 mph
Precip.
14%
Night
73°F
E 7 mph
Precip.
10%
24.09
thu
Day
77°F
NW 7 mph
Precip.
6%
Night
73°F
SW 12 mph
Precip.
18%
25.09
fri
Day
77°F
W 6 mph
Precip.
4%
Night
73°F
SE 3 mph
Precip.
19%
26.09
sat
Day
77°F
N 11 mph
Precip.
8%
Night
75°F
NE 12 mph
Precip.
24%
27.09
sun
Day
75°F
W 7 mph
Precip.
6%
Night
72°F
SW 14 mph
Precip.
29%
28.09
mon
Day
66°F
S 15 mph
Precip.
71%
Night
66°F
S 12 mph
Precip.
24%
29.09
tue
Day
68°F
N 7 mph
Precip.
37%
Night
75°F
NE 14 mph
Precip.
11%
30.09
wed
Day
72°F
S 6 mph
Precip.
45%
Night
66°F
NE 11 mph
Precip.
3%
01.10
thu
Day
66°F
N 6 mph
Precip.
11%
Night
66°F
NE 6 mph
Precip.
33%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 78.8°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 77.5°F and 72.7°F.

Air temperature in Hakone, °F

Precipitation total in Hakone, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Hakone

Sunniest months:
January 17 days
December 17 days
May 13 days
Warmest months:
August 86.7 °F
July 84.2 °F
September 81.3 °F
Warmest sea temp:
August 80.5 °F
September 78.5 °F
July 76.9 °F
Coldest months:
January 48.9 °F
February 49.7 °F
December 53.8 °F
Rainiest months:
July 8 days
June 7 days
September 7 days
Windiest months:
April 8.5 mph
March 8.5 mph
October 8.0 mph

Hakone on a weather map

Hakone
+75°F
SW 22 mph
Feels like: +77°F
Precip.: 4%
Places in Japan:
Name
°F
+72°F
+73°F
+73°F
+82°F
+82°F
+81°F
+79°F
+84°F
+86°F
+86°F
+70°F
+75°F
+77°F
+75°F
+70°F
24 Hours Forecast
Hakone
Local time: 11:56
September 18, friday
1200
75°F
SW
22 mph
1500
75°F
SW
21 mph
1800
72°F
SW
21 mph
2100
72°F
SW
18 mph
September 19, saturday
0000
70°F
S
17 mph
0300
70°F
S
15 mph
0600
72°F
S
14 mph
0900
72°F
S
15 mph
Units of measurement: °C / °F