You can book your Osaka trip for any time of year. Although the city has some of the warmest temperatures on Honshu Island, it still enjoys a temperate climate. Spring and fall are perhaps the best times to visit. The weather is very pleasant with generally sunny skies. Japan’s famous cherry blossoms are in full bloom during April and May and Osaka is no exception. But, these are also the busiest months and hotels can be full if you have not pre-booked in advance. Winters are not as harsh as Tokyo and you can take advantage of off-season rates.