worldweatherWeather in Nikkō - 14-day forecast
Detailed weather forecast for Nikkō, Japan: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Nikkō
today🌧️
22°💧 0.3 mm
Thu☁️
26°💧 0.1 mm
Fri🌧️
28°💧 1.9 mm
Sat🌧️
27°💧 3.7 mm
Sun🌧️
26°💧 10.2 mm
Mon🌧️
24°💧 22.7 mm
Tue🌧️
25°💧 15.2 mm
Wed🌧️
25°💧 2.8 mm
14-day forecast - Nikkō
📅 Nikkō 30 & 45-day weather - long-range outlook
Next 16 days · forecast
24°
around 19° at night · days with rain: 11
Weeks 3-4 · avg for July
27°
around 24° at night · rain chance 51%
Weeks 5-7 · avg for August
28°
around 25° at night · rain chance 53%
The 30 & 45-day outlook for Nikkō: the next 16 days are a numerical forecast updated daily - on average 24° by day and 19° at night. Further out we rely on multi-year climate averages: around 27° in July, and about 28° in August. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Nikkō
Wednesday8 July 2026
🌧️22°light rain
Thursday9 July 2026
☁️26°overcast clouds
Friday10 July 2026
🌧️28°light rain
Saturday11 July 2026
🌧️27°light rain
Sunday12 July 2026
🌧️26°moderate rain
Monday13 July 2026
🌧️24°moderate rain
Tuesday14 July 2026
🌧️25°moderate rain
Wednesday15 July 2026
🌧️25°light rain
Thursday16 July 2026
🌧️23°light rain
Friday17 July 2026
🌧️25°light rain
Saturday18 July 2026
☁️24°broken clouds
Sunday19 July 2026
🌧️22°light rain
Monday20 July 2026
🌧️20°light rain
Tuesday21 July 2026
🌧️20°light rain
Wednesday22 July 2026
🌧️21°moderate rain
Thursday23 July 2026
🌧️20°moderate rain
☀️ UV index in Nikkō - is it safe to sunbathe?
Today the UV index in Nikkō is 5 (moderate) - unprotected fair skin can burn in about 45 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Air quality and smog in Nikkō
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Kōbe Shi | 24.8 | 30.2 | good |
| Yokohama | 18.9 | 22.9 | good |
| Osaka City | 18.5 | 23.4 | good |
| Sagamihara-shi | 17.8 | 22.9 | good |
| Nagoya | 14.7 | 20.2 | good |
| Saitama-shi | 13.8 | 18.6 | good |
| Kioto | 13.3 | 17.5 | good |
| Kitakyushu City | 12.7 | 16.2 | very good |
| Okayama Shi | 11.5 | 15.4 | very good |
| Chiba | 11 | 14.8 | very good |
| Fukuoka City | 9.7 | 10.8 | very good |
| Hiroshima City | 9.4 | 12.5 | very good |
| Sendai | 9.1 | 12.8 | very good |
| Kumamoto Shi | 6.7 | 7.2 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-07-08, 10:00).
Nikkō weather through the year
Warmest, driest months on average: April, May, June, September.
🎉 Public holidays in Nikkō - when are the long weekends?
Next long weekend in Nikkō: Marine Day (20 July, Monday) - Saturday–Monday (3 days off).
20 JulyMonday
Marine Day
🎈 long weekend11 AugustTuesday
Mountain Day
🎈 long weekend + bridge day21 SeptemberMonday
Respect for the Aged Day
🎈 long weekend23 SeptemberWednesday
Autumnal Equinox Day
12 OctoberMonday
Sports Day
🎈 long weekend3 NovemberTuesday
Culture Day
🎈 long weekend + bridge day23 NovemberMonday
Labour Thanksgiving Day
🎈 long weekend1 JanuaryFriday 2027
New Year's Day
🎈 long weekend11 JanuaryMonday 2027
Coming of Age Day
🎈 long weekend11 FebruaryThursday 2027
Foundation Day
🎈 long weekend + bridge day23 FebruaryTuesday 2027
The Emperor's Birthday
🎈 long weekend + bridge day21 MarchSunday 2027
Vernal Equinox Day
falls on a weekendPublic holidays (statutory days off) - shops, offices and some attractions may be closed. A "bridge day" is a workday between a holiday and the weekend worth taking as leave.
Nearby places
FAQ - Nikkō weather
What is the weather like in Nikkō today?
Today it is about 22° during the day and 17° at night, light rain.
How far ahead can I check the forecast for Nikkō?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.