September · Japan
Best time to visit Hakone in September Weather, crowds & prices
Weather in Hakone in September
Average temperature 25°C, 206 mm of rain, about 24 days with 6+ hours of sunshine and 82% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.8/10
Ranked #10 of 12 months
- Avg temp
- 25°C
- Rainfall
- 206 mm
- Humidity
- 82%
- Days with 6h+ sun
- 24
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Hakone scores 5.8/10 for nature and wildlife travel - ranked #10 of 12. Expect around 25°C, 206 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
Hakone's hot springs, Lake Ashi and Fuji views make it Tokyo's classic mountain escape.
September in Hakone — workable with trade-offs
September averages 25°C (77°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
206 mm makes this the wettest stretch of the year, though about 24 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 5.8/10 here, 10th of 12 months, against 8.5/10 in the destination's best month.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
Plan for low-season pricing, with crowds are light for this destination.
Flexible dates? December scores 2.7 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Hakone in September?
- In September, Hakone averages 25°C, 206 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 5.8/10.
- Is September a good time to visit Hakone?
- September earns a 5.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Hakone in September?
- Expect about 206 mm of rain in September. Average humidity is 82% and there are about 24 days with 6+ hours of sunshine.
Curated in Hakone
Tickets & experiences
Things to do in Hakone
Hakone, Japan. Live activities and tours from GetYourGuide, matched to this destination.