Best time to visit Nikko
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Nikko
6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Nikko).
- 1
From Tokyo Private Nikko Shrines and Nature Day Tour - 2
Private Tea Ceremony & Kimono Experience in Nikko - 3
Private Nikko Toshogu Tour with Tea Ceremony - 4
Nikko History & Nature Discovery | Private Licensed Guide &Driver - 5
Nikko Full-Day Private Tour with Government-Licensed Guide - 6
Nikko Day Tour
Last refreshed 2026-06-06.
Similar climatesHakone90% · Fujikawaguchiko89% · Tokyo84%
Other destinations with the most-alike year-round climate to Nikko (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Nikko's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | -2–6 | 2 | 10 | 123 | 12.3 | 58% | 15 | 182 | 2 | Quiet | 5 |
| Feb | -1–7 | 3 | 9 | 106 | 11.8 | 54% | 15 | 178 | 3 | Quiet | 5 |
| Mar | 2–12 | 9 | 12 | 144 | 12.0 | 57% | 16 | 195 | 4 | Quiet | 6 |
| Apr | 7–16 | 14 | 14 | 169 | 12.1 | 58% | 16 | 198 | 5 | Quiet | 6 |
| May | 11–20 | 20 | 18 | 227 | 12.6 | 64% | 14 | 195 | 6 | Quiet | 6 |
| Jun | 16–24 | 25 | 21 | 273 | 13.0 | 70% | 11 | 180 | 6 | Quiet | 5 |
| Jul | 21–27 | 31 | 24 | 340 | 14.2 | 75% | 10 | 174 | 7 | Quiet | 2 |
| Aug | 22–29 | 33 | 25 | 348 | 13.9 | 74% | 11 | 212 | 7 | Busy | 1 |
| Sep | 19–25 | 27 | 22 | 306 | 13.9 | 76% | 11 | 163 | 5 | Moderate | 4 |
| Oct | 12–19 | 18 | 14 | 175 | 12.5 | 70% | 11 | 162 | 4 | Moderate | 6 |
| Nov | 6–14 | 12 | 9 | 100 | 11.1 | 65% | 13 | 178 | 3 | Peak | 7 |
| Dec | 0–8 | 5 | 10 | 105 | 10.5 | 59% | 14 | 181 | 2 | Moderate | 5 |
UV Index in Nikko by Month
UV index in Nikko peaks at 7 (high) in July, dropping to 2 (low) in December. June, July, August have high UV — SPF 30+ and sunglasses recommended.
Best months in detail
November
7/106–14°C (feels 12°C) · 9 rain days (100h) · 178 sun hours · 65% humidity · Peak crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
October
6/1012–19°C · 14 rain days (175h) · 162 sun hours · 70% humidity · Moderate crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 5 (moderate)
April
6/107–16°C (feels 14°C) · 14 rain days (169h) · 198 sun hours · 58% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 8 (high)
Every month
Show the other 9 months in detail
January
5/10-2–6°C (feels 2°C) · 10 rain days (123h) · 182 sun hours · 58% humidity · Quiet crowd · UV 2 (low)
February
5/10-1–7°C (feels 3°C) · 9 rain days (106h) · 178 sun hours · 54% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
March
6/102–12°C (feels 9°C) · 12 rain days (144h) · 195 sun hours · 57% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)
May
6/1011–20°C · 18 rain days (227h) · 195 sun hours · 64% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (very high)
June
5/1016–24°C (feels 25°C) · 21 rain days (273h) · 180 sun hours · 70% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (very high)
July
2/1021–27°C (feels 31°C) · 24 rain days (340h) · 174 sun hours · 75% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 10 (very high)
August
1/1022–29°C (feels 33°C) · 25 rain days (348h) · 212 sun hours · 74% humidity · Busy crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)
September
4/1019–25°C (feels 27°C) · 22 rain days (306h) · 163 sun hours · 76% humidity · Moderate crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
December
5/100–8°C (feels 5°C) · 10 rain days (105h) · 181 sun hours · 59% humidity · Moderate crowd · UV 2 (low)
Frequently asked questions about visiting Nikko
When is the best time to visit Nikko?
November is the highest-scoring month (7/10 on the Holiday Climate Index). Typical conditions: 6–14°C (9 rainy days). The top three months by score are November, October, April.
What is the worst time to visit Nikko?
August is the lowest-scoring month (1/10, capped by extreme heat). Typical conditions: 22–29°C (25 rainy days).
Is Nikko too hot in summer?
2 months (July, August) trip the heat deal-breaker in our scoring: apparent temperature crosses the comfort cap, so even with clear skies and low rain the score is held down. Plan around it if heat tolerance is low.
When are crowds lowest in Nikko?
Search-interest seasonality (Google Trends 2021-2025) is lowest in April and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Nikko have good weather but fewer tourists?
March (climate 6/10, crowd index 14) and April (climate 6/10, crowd index 0) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Nikko by month?
UV peaks at 7 (high) in July and is lowest in December at 2 (low). Monthly peak values: Jan 2, Feb 3, Mar 4, Apr 5, May 6, Jun 6, Jul 7, Aug 7, Sep 5, Oct 4, Nov 3, Dec 2.
What is the UV index in Nikko in July?
July is the peak UV month in Nikko, with a daily-peak UV index of 7 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.
How high can UV get in Nikko on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. July is the worst case: typical days average UV 7 (high), but the top 10% of days reach UV 10 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, March, April, May, June, July, August, September, October, November. Plan sun protection for the worst case, not the average.
Is air quality in Nikko bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 6 months: March, April, May, June, July, August. The worst month is June with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 22 µg/m³ (unhealthy for sensitive) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.