Hakone Weather in August
Thinking of visiting Hakone in August? Expect high temperatures reaching 29°C (84°F) during the day, dropping to 23°C (73°F) at night. Heavy showers are common during the rainy season.
Rainfall in Hakone in August
Hakone is in the rainy season in August, with rain on around 17 days and an average of 181 mm (7.1 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Hakone in August
Expect highs of 29°C (84°F) in Hakone in August, with nights dropping to around 23°C (73°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 23°C (73°F), evenings stay pleasantly warm. On average, it is the warmest month of the year.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Hakone's climate page.
Hakone Temperature in August
Min Temperature
23°C (73°F)
Max Temperature
29°C (84°F)
Chance of Rain
56%
Precipitation
181 mm (7.1 in)
Rainy days
17 days
Humidity
73% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hakone typically stay consistent throughout August, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 21°C (70°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Hakone in August
Browse day-by-day weather records for Hakone spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hakone historical weather extremes in August
Based on 49 years of weather observations in Hakone between 1976 and 2025, these are the recorded extremes.
- On August 6, 2025, temperatures climbed to 36°C (97°F), marking the warmest August day on record.
- The coldest August day was on August 15, 2003, with a maximum of 20°C (68°F).
Best Places in Japan in August
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in August →
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What to Wear in Hakone in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can.What To Do in Hakone in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Hakone's climate page.
See the full Hakone climate overview or explore weather in Japan.
