Osaka in June

When to go

June is rainy season in Osaka: the Japan Meteorological Agency's normal start for its Kinki region, which includes Osaka Prefecture, is in early June and the normal end is in the second half of July, and the Osaka Convention & Tourism Bureau warns of intermittent rain and humid summers. The WMO normals show a warm month with a large monthly precipitation total, and the agency's table shows the dates vary from year to year. The bureau says the irises at Shirokita Park bloom in May and June, so plan outdoor visits for drier spells and keep indoor options in reserve.

Trip facts

• The World Meteorological Organization's World Weather Information Service lists Osaka's climatological information for June, based on monthly averages for 1991–2020 from the Japan Meteorological Agency, as a mean daily maximum temperature of 82.4°F (28.0°C), a mean daily minimum temperature of 68.5°F (20.3°C) and mean total precipitation of 185.1 mm. (worldweather.wmo.int, checked 2026-10-16)
• The Japan Meteorological Agency lists the normal start of the rainy season (tsuyu) in its Kinki region as around June 6 and the normal end as around July 19, averages over 1991–2020, and gives 2026's dates as around June 2 and around July 9. (www.data.jma.go.jp, checked 2026-10-16)
• The Japan Meteorological Agency's page on regional names lists Kyoto, Osaka, Hyogo, Nara, Shiga and Wakayama prefectures as its Kinki region. (www.jma.go.jp, checked 2026-10-16)
• The Osaka Convention & Tourism Bureau's FAQ says Osaka gets very humid in the summer, that the rainy season generally begins in early June and ends in late July, and that there is often intermittent rain during this period, so be sure to bring an umbrella or raincoat. (osaka-info.jp, checked 2026-10-16)
• The Osaka Convention & Tourism Bureau says the Iris Garden at Shirokita Park, home to approximately 250 varieties of iris and 13,000 plants, is especially popular, and that the flowers bloom in May and June. (osaka-info.jp, checked 2026-10-16)
• The Japan National Tourism Organization says all foreign visitors must have a valid passport, and that passport holders of some countries and regions do not need a visa if their period of stay in Japan is 90 days or less and they are only engaging in tourism activities. (www.japan.travel, checked 2026-10-16)
• The Osaka Convention & Tourism Bureau's FAQ says the JR Kansai Airport Rapid and Nankai Railways are convenient train routes from Kansai International Airport to Osaka city, that many limousine buses also run to the city, and that the travel time is approximately 40 to 60 minutes, varying with road congestion and which train you take. (osaka-info.jp, checked 2026-10-16)
• The Osaka Convention & Tourism Bureau says Osaka city is roughly divided into two areas, Kita, centered around Umeda, and Minami, centered around Namba and Tennoji, that the subway links them, that the Osaka Loop Line runs in a circle around the city and is convenient for transferring to various private railways, and that Osaka Metro runs in a grid pattern covering most of the city. (osaka-info.jp, checked 2026-10-16)
• The Osaka Convention & Tourism Bureau says that from September 1, 2025, Osaka Prefecture's accommodation tax per person per night is not charged on an accommodation fee under 5,000 yen and is 200 yen from 5,000 yen to less than 15,000 yen, 400 yen from 15,000 yen to less than 20,000 yen and 500 yen at 20,000 yen or more, where the fee includes the room only fee, service charges and cleaning fees but not meal fees, and that the tax is paid to the hotel. (osaka-info.jp, checked 2026-10-16)
• JR West's ICOCA guide says ICOCA can be used all across Japan on railways and buses, and to simply top up your ICOCA for continued convenience. (www.westjr.co.jp, checked 2026-10-16)