Average High: 8°C (46.4°F) Average Low: 1°C (33.8°F)
As we’ve seen Hokkaido tends to be a bit chillier on average than the rest of Japan, and April is no exception. While officially ‘out of winter’, the daytime temperature is still around 8°C and can drop below zero during the night, so having some good layers and a heavy coat or jacket is a good idea if you’re planning on visiting some of the major cities like Sapporo.
Average High: 13°C (55.4°F) Average Low: 3°C (37.4°F)
The northern tip of Honshu can finally look forward to spring. With an average temperature of 13°C there are a number of rainy days during this month as the old saying goes “April Showers”. You’ll still want to make sure you zip up your coat all the way, but you can start to look forward to some sunny, if not brisk, days. It’s about half and half in terms of precipitation and clear skies, and if it’s been a cold year you may also catch the tail-end of the cherry blossoms.
Average High: 18°C (64.4°F) Average Low: 10°C (50°F)
The weather seems to pivot on its heel during April, and if you’re in the Kanto region you’ll get to witness this first hand. From somewhat cold and rainy days with overcast skies, April seems to herald a taste of what summer will be like. Temperatures can get as high as 25 degrees here, and in Tokyo this is definitely true although you can expect the median range to be between 18 and 20. Keep an umbrella on hand, just in case you run into an impromptu shower, but in general you can look forward to some high humidity but clear skies.
Average High: 19°C (66.2°F) Average Low: 10°C (50°F)
April is a beautiful time in the Kansai region, and a great time to plan a visit to Kyoto, Osaka, or Kobe where the spring months can best be experienced. This is also when the cherry blossoms tend to come out in full bloom and light up the streets with pink trees. This is also a great time to experience the traditional cherry blossom gatherings, Hanami, where people will often have picnics and do karaoke in parks. Average temperatures hover around a pleasant 19°C but can definitely be warmer. While still susceptible to showers, the majority is sunny days.
Average High: 17°C (62.6°F) Average Low: 10°C (50°F)
Again, there is plenty of sunshine to be had during April in Kyshuu, and many people look forward to the end of the month when the national holiday of Golden Week occurs. This is a great time to head to Fukuoka or explore Japan’s onsen culture at Beppu. The average temperature here is around 17 degrees, give or take 4 degrees, and is slightly warmer than the rest of the mainland. Nevertheless, even on sunny days you can expect some high humidity.
Average High: 24°C (75.2°F) Average Low: 19°C (66.2°F)
A tropical paradise during April, Okinawa transforms into a very popular vacation destination during this time. As a result, you can expect it to be warmer and wetter here than anywhere else in Japan. With an average daytime median between 20 and 24°C, Okinawa can get up as high as 27 on particularly hot years when the ocean currents converge and create a micro-climate. If you’re lucky you might also get to experience some wild thunderstorms. April is famous for lighting up the sky.
It’s definitely wise to have some rain gear on hand such as a rain jacket or umbrella if visiting the southern areas of Japan such as Okinawa, in particular. You can start to look forward to some more temperature conditions and climates during this time. Rather than heavy jackets and long pants, although you should definitely have a pair if you’re in Tohoku or Hokkaido, especially during the evenings, try packing lighter clothes such as cotton pants, shorts, and thin upper layers. Because of the humidity in Japan during April, you can also expect to be sweating even when holding still, having layers that breathe is vital!