Nikko weather in August
August in Nikko: warm, soaked, with clean air — fine if you can take 27 rainy days.
#10 of 12 months in Nikko · #690 of 897 destinations to visit in August · comfort 65/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nikko in August
No notes yet. Open Nikko on the map to add the first one.
Nikko climate normals — August
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Rainfall | 259 mm / 10.2 in | ⛈ soaked |
| Rainy days | 27 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 22°C / 71°F | |
| Sunshine | 9.5 h/day | |
| Daylight | 13.5 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Nikko?
Loading map…
Nikko in August — FAQ
- Is August a good time to visit Nikko?
- August in Nikko: warm, soaked, with clean air — fine if you can take 27 rainy days. It ranks #10 of 12 months for Nikko on SeasonMap's comfort score (65/100).
- What is the weather like in Nikko in August?
- In August, Nikko averages a daily high of 27.6°C and a low of 21.2°C, with about 258.7 mm of rain over roughly 27 rainy days.
- What is the air quality in Nikko in August?
- Nikko has a mean US Air Quality Index of about 41 in August.