September is often regarded as the best time to visit Osaka for a holiday rental, as it marks the transition from the peak season, which runs from July to September. During these summer months, the city buzzes with activity, as tourists flock to enjoy the vibrant street life, delicious cuisine, and stunning attractions like Osaka Castle and Universal Studios Japan.The peak summer temperatures can soar to around 30°C, making it a lively yet humid environment. However, September tends to offer slightly cooler temperatures, averaging between 20°C to 28°C, which is much more comfortable for outdoor sightseeing and exploring the city's rich cultural heritage. This makes it an ideal time for leisurely strolls through the historic districts or indulging in culinary delights at street markets.For those looking to save a bit on their holiday, May is a wonderful option, as it is considered a low season. The weather is pleasantly warm, around 20°C to 25°C, and there are fewer crowds, allowing for a more relaxed experience. Visitors can enjoy the beautiful cherry blossoms blooming in parks and gardens without the hustle and bustle of peak tourist activity.