Worst time to visit Tokyo

The worst month to visit Tokyo is August

August is Tokyo's hottest month: 31°C daytime highs, 24°C nights that never cool off, humidity routinely above 70%, and a heat index that regularly passes 38°C on the pavement in Shinjuku or Asakusa. Sightseeing between 11am and 4pm is genuinely punishing, and heat-stroke warnings from the city are a near-daily event.

Obon (August 13–15) is the second problem. It is the nationwide ancestor-honouring holiday, and the days around it are the busiest domestic-travel period of the year after New Year: shinkansen seats out of Tokyo sell out weeks ahead, many small restaurants and businesses close, and hotel rates in resort areas spike. The window to avoid is roughly August 11–17.

Why July through September is genuinely difficult

• July — the heat arrives. The rainy season ends mid-month and summer hits hard: 30°C days, 156mm of rain in bursts, and the heat index crossing 35°C. The Sumida River Fireworks (last Saturday) draws a million people.
• August — peak heat plus Obon. The hottest month and the domestic shutdown, as above.
• September — typhoon peak and one of the wettest months. 209mm of rain and the height of the Pacific typhoon season for the Kanto region. Storms track across central Honshu every few weeks, grounding flights at Narita and Haneda and shutting sightseeing for a day or two at a time. Track them at the Japan Meteorological Agency.
• June — the rainy season (tsuyu). Not in the worst three, but worth knowing: 168mm of rain, mostly overnight drizzle and overcast days. The upside is that June is usually the cheapest month for Tokyo hotels.

The other "wrong" time: cherry blossom week without a booking

Late March to early April has Tokyo's best weather and its worst logistics. If you have not booked by roughly November of the previous year:

• Hotel rates climb well above normal within 5km of Ueno Park, the Meguro River, and Shinjuku Gyoen
• Availability collapses — even business hotels sell out
• Golden Week (April 29 – May 5) follows immediately with the year's biggest domestic travel surge

It is the right time to go — but only with a booking in hand. Otherwise, November gives the same dry, clear weather with far better availability.

If you have to travel in summer, here's what to do

• Arrive before August 11 or after August 17. Obon is the one date window that is worth moving a trip to avoid.
• Sightsee early and late. Meiji Jingu and Senso-ji at 8am; museums, department-store basements, and Akihabara from noon to 4pm; the Skytree and city views after dark.
• Escape upward. Nikko, Hakone, and the Kiso Valley run 5–8°C cooler and are within two hours by train. Hokkaido skips the humidity entirely.
• Buy travel insurance with weather coverage for September — a typhoon can cost you two days of a week-long trip.
• Lean into the festivals. Summer is matsuri season — Mitama Matsuri at Yasukuni (mid-July), neighbourhood bon-odori dances all August. Evenings are when Tokyo summer works.

Better windows: when to visit instead

• Late October – November: The second peak season and, for many, the better one — 17–22°C days, low humidity, clear skies, and koyo autumn leaves peaking November 20–30 at Rikugien, Meiji Jingu Gaien, and Shinjuku Gyoen. Far easier to book than spring.
• Mid-May:After Golden Week ends on May 5, crowds drop sharply while the weather peaks at 23°C with low humidity. Sanja Matsuri (third weekend) is one of the city's great festivals.
• Late March – early April: Cherry blossoms — with a booking made the previous autumn.

Click any month on the seasonality map above for the full climate detail and our verdict.