Nikko Weather in August

Season: Summer

Overview:
1. Although August is the hottest month in Nikko, the weather still remains cooler than most of parts of Japan.
2. August also sees the rainiest climate of the year, but it’s mostly light rain rarely impacting your travel plans.
3. August is the peak travel season in Nikko, so expect overcrowding and a rise in travel costs.

Crowded Attraction in Nikko

Highest Temperatures All Year Round, Yet Cool

Nikko in August experiences the hottest climate throughout the year, but visitors rarely feel scorching. Its average temperature ranges from 18-26°C (64-79°F), and the highest temperature in the daytime hardly exceeds 28 degrees Celsius (82 degrees Fahrenheit), which is much lower than those nearby popular travel destinations, like Tokyo and Osaka. Therefore, many people come to Nikko to spend a cool holiday.

However, the temperature difference between day and night is quite significant: temperature in early mornings and late evenings often hover between 10-15°C (50-59°F). Overcast or rainy days are cooler, with a noticeable chill in the mountains. Therefore, layered clothing is necessary.

Perfect for Heat Escape

Most Rainy Month

Nikko receives the most rain of the year in August, with the average precipitation of 318 mm over 22 rainy days. Despite that, there are hardly concentrated heavy downpours. The rainy pattern is dominated by frequent brief showers and light rain. But you need to notice that occasional thunderstorms might happen in higher altitude areas.

Plus, you’ll find many surprises on outdoor excursions on a rainy day. After rain showers, you might witness wonderful rainbows over Kegon Falls or stunning cloud seas from the Kirifuri Highlands.

Misty Kegon Falls

High Humidity Level

Rainy climate in Nikko results in a pretty high humidity level. But Nikko’s abundant greenery and flowing rivers keep the air fresh and pleasant. As long as you wear breathable fabrics, you won’t feel any stickiness or discomfort.

Sunshine Hours & Daytime Hours

Sunshine Hours: about 5 hours
Sunrise: 4:47-5:11
Sunset: 18:11-18:48
Daytime Hours: 13 hours 2 minutes - 14 hours 1 minutes

Sunshine hours increase slightly, and ultraviolet rays can be quite strong, with the maximum UV index reaching up to 10. Therefore, sun protection is essential, even on cloudy days.

In August, Nikko enjoys at least 13 hours of daylight, giving visitors plenty of time to explore. But that doesn’t mean you can plan your trip too casually. August is the busiest month in Nikko. You will not only see lots of crowds at major attractions but also long queues in front of the bus station. To make the most of your trip, it’s still advised to start your day early.

The God Bridge

What to Wear in August

Upper Clothing: Comfortable and breathable T-shirt is ideal for your daytime sightseeing. After sunset, pair it with a light jacket.

Bottom Clothing: You are advised to wear shorts or skirts for city strolls. For hiking in mountainous areas, lightweight long pants are more practical.

Shoes: Comfortable walking shoes or sneakers are musts when you spend long hours exploring shrines and natural trails. Hiking boots are also recommended.

Accessories:
Sun protection items: sunglasses, hats and sunscreen.
Insect repellent: It’s necessary to pack it, especially when you explore the mountain area.
Rain gear: A raincoat is much more convenient than an umbrella.

Travel Highlights in August

1. Nantai-san Climbing Festival

It is one of the most important annual events in Nikko Futaransan Shrine with over 1,200 years of history, held from the 31st of July to 7th of August. During the festival, the usually restricted inner shrine opens for worshippers. And Mount Nantai’s trailhead is specially opened at night, so you can climb overnight and be rewarded with the breathtaking sunrise from the summit. In addition, there are traditional dances, fireworks and special rituals by Lake Chuzenji.

Tip: The trailhead is not open every day during the festival, so check the schedule in advance.

Lake Chuzenji on Sunny Weather

2. Appreciating flowers at Kirifuri Highlands

At 1,200 meters (3,940 feet) above sea level, the Kirifuri Highlands serves as a cool escape from Japan’s August heat, with temperatures at least 8°C (46°F) lower than in the central city. In addition, August is the peak blooming season of Tamura-so and Tsurigane-ninjin flowers, painting the highlands with vibrant colors. Don’t miss the famous Sky Corridor, a 1,445-step wooden walkway offering panoramic mountain views.

Tip: Bring a warm jacket, as you may even feel chilly here in mid-summer.

Travel Advice:

1. August overlaps with summer vacation of many countries over the world, as well as Japan’s Obon Festival, one of the major local public holidays. Thus, there are countless domestic and international tourists. You’d better book your accommodation and transportation in advance to secure the best options.
2. For a better travel experience, consider visiting Nikko in late August rather than earlier in the month, when crowds thin slightly.
3. It’s always helpful to check the forecast and adjust your travel plans flexibly. When it’s raining heavily, visit some indoor attractions like the British Embassy Villa Memorial Park and Nikko Natural Science Museum.

Italian Embassy Villa Memorial Park