Nikko in July: weather, what to wear and what's on

Nikko weather in July

Averages for 1991–2020 at the JMA's Imaichi station (414 m above sea level).

High

26.7°C (80°F)

Low

19.0°C (66°F)

Precipitation

286.1 mm

Wet days

17.7 days

Sunshine

117 hours

Highs rise 3.5°C from June and climb another 1.3°C into August.

That is 9.8°C above Nikko's yearly average high of 16.9°C.

Of our 14 places with temperature records, Nikko is the 2nd coldest in July: 0.5°C cooler than Kawaguchiko and 1.3°C warmer than Sapporo.

July is Nikko's 3rd wettest month (286.1 mm).

Of our 15 places, Nikko has the 3rd highest precipitation in July: 13.0 mm less than Fukuoka and 6.3 mm more than Hiroshima.

Rain of 1 mm or more falls on 17.7 days, and 10 mm or more on 7.9 days.

Rain of 30 mm or more in one day falls on 3.0 days, and 50 mm or more on 1.2 days.

7.8 days reach 30°C or more.

The sun is out for 40% or more of the possible hours on 9.9 days, and 10.2 days have under 0.1 hours of sunshine.

Up at Okunikko (1,292 m), the JMA's second station in Nikko, the average high is 22.1°C (72°F) and the low 14.9°C (59°F).

Average temperature

22.4°C (72°F)

Days of 25°C or more

20.4 days

Early, mid and late July

By the last ten days of July the average high in Nikko is 2.4°C higher than in the first ten.

By ten-day totals, 21–31 July is the wettest (99.0 mm) and 1–10 July the driest (92.9 mm).

What to wear in Nikko in July

Warm: highs around 26.7°C

• Short sleeves or thin long sleeves, with a light layer for air-conditioning and evenings.
• Rain gear every day: a sturdy umbrella and a water-resistant jacket. Rain falls on 17.7 days.

Okunikko and Lake Chuzenji are colder: the average high there is 22.1°C, which is our Mild level.

Pack

• Sturdy umbrella and rain jacket
• A light layer for air-conditioning

• Our clothing rules

Rainy season and typhoons

In an average year (1991–2020) the JMA says the rainy season in Kanto-Koshin starts around 7 June and ends around 19 July. In 2026 it started around 7 June and ended around 20 July.

In an average July, 0.4 typhoons come within 300 km of the Kanto-Koshin region; across Japan, 2.1 come within 300 km and 0.6 make landfall (JMA, 1991–2020).

July records in Nikko

The extremes the JMA has measured in July at its Imaichi station.

Hottest July day

35.6°C (96°F) on 13 July 2009 (records since 1979)

Coldest July night

10.6°C (51°F) on 13 July 1983 (records since 1979)

Wettest July day

195.0 mm on 10 July 2002 (records since 1979)

Holidays and crowds in July

National holidays in July 2027:

• Mon 19 July — Marine Day

• Sat 17 July to Mon 19 July: 3 days off in a row

In July 2025, hotels and inns across Tochigi Prefecture were 56.3% full on average (5th busiest of 12 months). Foreign guests spent 28,930 nights there that month (Japan Tourism Agency). That compares with 51.5% in June and 64.2% in August.

• Japan in July: visitor numbers and busy travel days
• Holidays in July

What's on in Nikko in July

Nikko before and after July

• Nikko in June
• Nikko in August
• All 12 months in Nikko

Other places in July

• All 15 places in July

Related items

• Nikko by month
• Japan in July
• Nikko in June
• Nikko in August