During this period, a strong Pacific high-pressure system will stretch over southern Japan, bringing heat and humidity to much of the country. On August 27, a developing low-pressure system is expected to move into the Sea of Okhotsk, pushing a front down toward the Sea of Japan side of western Japan. By August 28–30, high pressure over the Sea of Okhotsk will shift eastward, while a trough of low pressure is expected to pass over northern Japan around August 29–30. On August 31, high pressure will cover much of the country again, leading to more stable weather.

However, heavy rain is possible on August 26–27, especially on the Sea of Japan side of northern and eastern Japan. Depending on how active the front becomes, some areas could experience warning-level rainfall, with the potential for stormy conditions and rough seas in northern regions.

Meanwhile, eastern and western Japan — including major cities like Tokyo, Kyoto, and Osaka — are expected to see very high temperatures, with some areas hitting 35°C (95°F) or more. Travelers should take precautions against heatstroke and stay well hydrated.

According to the latest forecasts, there are no typhoons expected to affect mainland Japan this week.

Japan's typhoon season runs from May through October, with most activity from July to September. During a typhoon, transit delays and cancellations can be expected. Be sure to stay updated on the latest weather and flight information. For real-time updates on railways and airports, visit LIVE JAPAN's transport information page.

August is considered the height of Japan’s summer festival season, when the country bursts into color and sound. Nearly every region holds its own celebration, ranging from small neighborhood Bon-odori dances to massive, city-wide spectacles, like the Aomori Nebuta Matsuri.

In Tokyo, you might catch the Asakusa Samba Carnival, a fun parade blending Japanese flair with Brazilian rhythms. In eastern Japan, the Nagaoka Fireworks Festival in Niigata Prefecture is one of the largest in the country, lighting up the night sky with thousands of spectacular bursts. Kyoto hosts the Daimonji Gozan Okuribi on August 16, where giant bonfires shaped like Chinese characters are lit on surrounding mountains to send ancestral spirits back to the afterlife.

At many of the summer festivals, expect to see elaborately decorated floats, yukata-clad dancers moving in unison to folk songs, and food stalls offering a variety of summer street foods.

Especially for first-time visitors, viewing (and even joining) a local festival isn’t just a fun activity; it’s a great chance to connect with Japan on a different level and make a lasting memory.

Tokyo stays firmly in summer mode, with highs around 32–36°C (90–97°F). Expect mostly cloudy skies with occasional sun, and a slightly higher chance of rain around mid-week.

Sapporo will see a mostly cloudy week, with showers early on and a shift toward partial sunshine later. Temperatures will stay comfortable, especially mid-week when it cools slightly.

Expect warm and often cloudy conditions in Sendai, with daytime highs in the high 20s to low 30s°C (82–90°F). Sunshine will peek through at times, and scattered showers are possible all week.

Hot and humid weather continues in Osaka, with highs around 32–36°C (90–97°F) and the occasional chance of scattered rain. Most days will be a mix of sun and clouds.

Fukuoka enjoys mostly sunny or partly cloudy skies this week, with just a few days showing slightly higher rain chances. Highs range from the upper 20s to mid-30s°C (82–95°F).

Naha stays warm and tropical, with temps in the low 30s°C (86–90°F) and a mostly sunny start. Expect increasing cloud cover and a slightly higher chance of rain by the weekend.

The forecast was AI-generated and then human-edited. Source for forecast and images: Japan Meteorological Agency website (www.jma.go.jp)

Whether you're planning to be in Japan this week or later this year, check out these fun things you can add to your itinerary!