Hakone weather in May
May in Hakone: nice, soaked, with very humid — fine if you can take 17 rainy days.
#1 of 12 months in Hakone · #494 of 897 destinations to visit in May · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Hakone in May
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Hakone climate normals — May
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 51°F | |
| Rainfall | 191 mm / 7.5 in | ⛈ soaked |
| Rainy days | 17 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 11°C / 51°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 14 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 57 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hakone in May — FAQ
- Is May a good time to visit Hakone?
- May in Hakone: nice, soaked, with very humid — fine if you can take 17 rainy days. It ranks #1 of 12 months for Hakone on SeasonMap's comfort score (81/100).
- What is the weather like in Hakone in May?
- In May, Hakone averages a daily high of 18°C and a low of 10.8°C, with about 190.7 mm of rain over roughly 16.8 rainy days.
- What is the air quality in Hakone in May?
- Hakone has a mean US Air Quality Index of about 57 in May.