Measurements:
°C
°F
CURRENT WEATHER
05:30
Hakone
84°F
NE 16 mph
Feels like: 90°F
Precip: 10%
World Resorts Japan Hakone Weather

7 Day Weather Forecast

09.09
wed
DAY
84°F
E 11 mph
precip
31%
NIGHT
72°F
S 12 mph
precip
77%
09.10
thu
DAY
74°F
S 12 mph
precip
34%
NIGHT
72°F
SW 7 mph
precip
36%
09.11
fri
DAY
72°F
SW 6 mph
precip
41%
NIGHT
72°F
S 4 mph
precip
27%
09.12
sat
DAY
78°F
SW 6 mph
precip
12%
NIGHT
78°F
S 4 mph
precip
11%
09.13
sun
DAY
80°F
SW 10 mph
precip
12%
NIGHT
78°F
S 4 mph
precip
23%
09.14
mon
DAY
84°F
N 11 mph
precip
8%
NIGHT
80°F
E 3 mph
precip
22%
09.15
tue
DAY
82°F
N 10 mph
precip
22%
NIGHT
80°F
NE 7 mph
precip
45%

Hakone Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Hakone was 26.4°F. The maximum and minimum values were 24.3°F and 27.7°F respectively.

Hakone on the Weather Map

Best Time to Visit Hakone
The most sunny months:
January 17 days
December 17 days
May 13 days
The most warm months:
August 90.8 °F
July 88.1 °F
September 84.8 °F
Warmest sea temperature:
August 83.9 °F
September 81.7 °F
July 79.8 °F
The most cold months:
January 48.7 °F
February 49.7 °F
December 54.3 °F
The most rainy months:
July 8 days
June 7 days
September 7 days
The most windy months:
April 8 mph
March 8 mph
October 7 mph
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