Japan in Summer: Choosing Festivals, Fireworks and Cooler Places

Thai travellers are used to heat, so it is easy to assume a Japanese summer will not be a problem. In reality, the heat and humidity in Japan's big cities at midsummer are heavier than many expect, particularly when walking in the sun for long stretches in Kyoto or Tokyo, and nights cool down little. On the other hand, this is the season of local festivals and fireworks that you will not find at other times. So the question is not whether to go, but where to go and how to plan your days so you do not run out of energy.

The overall timing

Japan's summer has three different phases. The first is the rainy season, or tsuyu, which in many areas runs roughly from June to mid July, with frequent drizzle and high humidity. The second is mid July to August, the hottest and sunniest period, when most festivals take place. The third is late August into September, when heat lingers but typhoons start to appear and can halt trains and flights. Hokkaido does not have a distinct rainy season in the same way, which makes it a choice for those escaping humidity.

Table by region

Popular highlights

Fireworks festivals are the image most people have of a Japanese summer. Many cities stage fireworks along rivers or lakes from July to August, with crowds in yukata and food stalls lining the streets. Kyoto's Gion Matsuri is a major festival that runs through July, and Osaka's Tenjin Matsuri includes boats on the river. Aomori has Nebuta, with parades of giant lantern floats, and Sendai has Tanabata, decorated with many colourful paper streamers. They offer a great atmosphere, paid for in crowding.

• Festival and fireworks dates change from year to year, so confirm with the organisers before booking flights and hotels.
• To avoid crushing crowds, try festivals in smaller cities or smaller fireworks displays.
• A hand fan, water and a small towel are basic summer essentials.

Lesser-known places

To dodge the heat, try highland and northern areas. In Hokkaido, places such as Furano, Biei and Sapporo are far more comfortable. Karuizawa in Nagano is a resort town where Tokyo residents escape the heat, and Nikko and the Oku-Nikko area are cooler. Kamikochi is open for much of the summer. Mount Fuji has a short climbing season in summer, but climbing it takes preparation and checking the rules in advance; it is not a casual stroll. Okinawa offers the sea but sits in typhoon territory, so keep a backup plan.

Booking and getting around

Do book rooms for major festivals early, because festival towns often fill up entirely and prices rise. When shaping your days, keep mornings and evenings for outdoor time and use the hottest part of the afternoon for museums, department stores or air-conditioned cafes. Drink water regularly, since heatstroke is a real concern in Japan. A foldable rain jacket or compact umbrella helps with sudden showers, and keep a spare day in case a typhoon arrives.

Sample routes

1. 1A Hokkaido escape-the-heat routeBase yourself in Sapporo, head to Furano and Biei for the flower fields in July, then return to Sapporo or Otaru.
2. 2A Kansai festival routeKyoto and Osaka around a major festival, scheduling afternoons indoors and outings in the morning and evening.
3. 3A mountain route near TokyoTwo nights in Tokyo followed by Karuizawa or Nikko, for both the big city and cooler mountain air.

Festivals and unsettled weather mean data is handy for checking rain radar, train status and meeting points when crowds are thick. An eSIM installed before departure keeps maps and train apps working throughout.

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