In May, the weather in Osaka could be a bit muggy and warm. It is just before the beginning of the rainy season and most days are cloudy with some rainy days. The temperature gradually rises to about 70°F (21°C)；However, May is more pleasant compared to the humid and rainy month of June.
Is May a good month for traveling? Let's take a look at the temperatures and rainfall as well as the top activities to enjoy during this month.
What Is the Temperature and Rainfall Like in May in Osaka?
The temperature difference between day and night is big. During the day, temperatures are warm at about 77°F (25°C). At night, they could drop to 59°F (15°C) or lower.
As the rainy season approaches, rainfall and humidity in Osaka would increase compared to April. This month would have about 10 rainy days, with some days having heavy and continuous rain, especially toward the end of the month as the rainy season starts in June.
Osaka Daily Temperatures Chart
This chart is based on data from 2024, and the 2025 data is expected to be similar.
Is May a Good Time to Visit Osaka?
Dotonbori, OsakaYes, May is between the peak travel month of April and the rainy season of June.
The crowds are much smaller compared to April's cherry blossom season (except for Golden Week in the first week of May). The weather is mild and more comfortable than in June's rainy season.
Mid-May is much better than late May as the rainfall tends to increase toward the end of the month. If you plan to travel at the end of May, outdoor activities may be impacted by the weather. Consider scheduling more indoor activities, such as visiting museums, enjoying hot springs, or exploring traditional experiences like sumo wrestling, tea ceremonies, and ninja activities.
Avoid the first week of May, which is the Japanese National Week holiday (April 29th to May 5th). This time also coincides with holidays in China. As a result, it gets very busy, with large crowds and high travel prices.
What to Wear in May in Osaka
It is cool in the mornings and evenings in May
Daytime: Wear short-sleeved tops, shorts, or lightweight long pants.
Evening: Take a cardigan, hooded jacket, or light coat to keep warm.
Other essentials: Don't forget to take a sun protection jacket and sunglasses to shield against the sun as well as rain gear in case of rain.
Top Things to Do in Osaka in May
1. Enjoy Spring Flowers and Greenery at Osaka Castle
By May, the cherry blossoms in Osaka Castle Park have faded but the area is vibrant with spring greenery. The trees are lush and azaleas and wisteria are in full bloom. Nishinomaru Garden within the castle grounds is a must-see tranquil spot. Plan for a visit of about 2–3 hours to fully enjoy the scenery.
2. Explore the Osaka Expo in 2025
The Osaka Expo (Expo 2025) is scheduled to run from April 13th to October 13th, 2025. In May 2025, you would visit the Expo without too many crowds. Tickets can be bought on the official website and foreign credit cards are accepted.
Check out our How to Visit Expo 2025 Osaka for more detailed info.
3. Feed the Deer in Nara
Deer in Nara with KidMay marks the transition from late spring to early summer in Nara. Nara Park, with its lush greenery and blooming flowers, offers a stunning backdrop for your visit.
During this comfortable season, the deer in the park are particularly lively so you could get up close and enjoy meaningful interactions with these gentle creatures. It's a wonderful opportunity to connect with nature and experience the charm of Nara!
4. Hike the Kumano Kodo
Kumano Kodo Nakahechi HikingLate spring to early summer is a fantastic time for hiking, with fresh air and mild temperatures. You could drive for just 2 hours from Osaka to reach the Kumano Kodo, where you could ascend the ancient stone steps covered in moss.
This trail is perfect for beginner hikers and children aged 10 and older. As you explore, you would experience the tranquility of ancient shrines and the peacefulness of the surrounding forest.
If you want a more immersive experience, we recommend 4-Day Koyasan and Kumano Kodo Walking Tour.
Let Us Help You Plan Your 2025 Japan Trip
Japan,Summer, KimonoAre you expecting to travel to Japan in the spring of 2025? See below for some of our most popular Japan tour itineraries:
Contact us and we'll help you to plan your own Japan itinerary based on your personal preferences.
Osaka Weather By Month
Get Inspired with Some Popular Itineraries
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