Japan in Summer with Kids

June is the rainy season, and it has a worse reputation than it deserves. It is rarely rain all day: more often grey mornings, passing showers and soft light, with hydrangeas along the temple paths and thinner crowds than in spring. Temperatures are warm rather than hot. For a family that does not mind an umbrella, it is one of the more comfortable summer months.

July splits in two. The first half is usually still the rainy season. Once it ends, in the second half of the month in an average year, the weather turns reliably sunny and genuinely hot, and the humidity stays. This is when the summer festivals and fireworks begin.

August is the height of the heat, and the middle of the month is Obon, when people across Japan travel home. Trains and hotels are at their busiest; in 2026 every seat on the Nozomi bullet trains was reserved-only during Obon. August and September are also when typhoons are most likely.

The single most useful change is to start early. Temples, gardens and famous viewpoints are cooler and quieter before nine; by late morning in July, the same places are hot and crowded. One family we planned for this summer saw the rock garden at Ryoan-ji at eight in the morning, before the heat and most of the visitors. Another started their Osaka day at the castle in the early morning, before the heat set in.

The middle of the day is for being inside or in the shade: museums, aquariums, department-store food halls, a long lunch, an hour back at the hotel. In Tokyo, immersive places like teamLab Planets work well, with an entry time that avoids the busiest part of the day. The evening then belongs to the city again: markets, lantern-lit streets, a night view.

Japan's Ministry of the Environment and Japan Meteorological Agency issue a heat stroke alert when the heat index (WBGT) is forecast to reach 33 or higher, from late April to late October. On alert days, plan the outdoor time early and keep the children drinking water. Vending machines and convenience stores are everywhere, which makes that easy.

Kyoto sits in a basin, which is why it holds the summer heat so well, and why the hills around it feel so different. On the hottest day of their trip, with the forecast for central Kyoto close to 100°F, one family went north instead: the stone steps of Kurama-dera through cedar forest, then down into the valley of Kibune for lunch on a kawadoko, a wooden platform built over the stream, where the air is noticeably cooler than in the city.

Another family, in June, spent part of a day at a riverside pavilion in the mountains where somen noodles are sent down a split-bamboo flume in cold water, and the only rule is to catch your lunch with chopsticks before it passes. It is the kind of summer experience children remember, and it happens in the cool.

Further east, Hakone and the lakes around Mt. Fuji are higher and fresher than Tokyo, and a ryokan with a hot-spring bath is, oddly, a pleasure even in summer.

Most summer rain is showers. One family's day in Nara in June was steady rain from start to finish: clear umbrellas went up, the deer still bowed for crackers, and a girl with an umbrella beside a young deer became one of their favorite photographs of the trip. In July, another family's street photoshoot in Akihabara was interrupted by rain before it finished, and became something memorable instead.

Typhoons are the one summer weather event worth planning for. When one approaches, bullet trains and flights can be suspended for part of a day. The practical answer is a plan with some give in it: a day that can move, hotels that do not all depend on one train, and someone watching the forecast with you. It also helps to know what happens to the bullet train in a typhoon before you need to.

June: ten days with two teenage daughters.This family's trip fell in the rainy season. They timed teamLab Planets away from the midday peak, spent part of a Kyoto day in the hills with nagashi somen, saw Nara in the rain, and began their Osaka day at the castle before the heat. Read their ten days.

Late July: eleven days in the peak of the heat. A family of four with two children came in the hottest stretch of the year. Their days started early, with Ryoan-ji at eight; when the forecast for central Kyoto reached close to 100°F, the day went north into the mountains, to Kurama-dera and lunch over the stream in Kibune. In Nara they walked the deer park and the Great Buddha in temperatures close to 100°F, and the cool, dim hall of the Great Buddha was a welcome break.

Neither family stayed away from the heat. They put the right things at the right time of day, and kept the plan loose enough to move when the weather did.

A plan built around the heat, a cool day in the mountains, and a day that can move when a typhoon does. That is the part of a summer trip we usually take care of. Start a conversation →