Weather in Japan for May 2026
So far, May 2026 in Japan is slightly warmer than the historical average by 1.5 °C.
The forecast for the next days in Japan predicts temperatures to be around 22 °C, close to the historical average.
In general, the average temperature in Japan at the beginning of May is 21.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 20.1 °C by the end of May.
Japan experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 169.1 mm.
Is May a good time to visit Japan? check out the best time to travel to Japan page.
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Japan Weather May
What’s the Weather Like in Japan This May?
Temperatures trend during May in Japan
May weather in Japan day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate or heavy rain shower | 20° /13° | 16.5 mm | 4 | |
| 2 May |  Patchy rain possible | 20° /12° | 3 mm | 5 | |
| 3 May |  Partly cloudy | 21° /12° | 0.3 mm | 6 | |
| 4 May |  Sunny | 24° /14° | 1 mm | 6 | |
| 5 May |  Overcast | 22° /14° | 0.2 mm | 6 | |
| 6 May | Partly cloudy | 22° /15° | 2.9 mm | 6 | |
| 7 May | Patchy rain possible | 22° /14° | 7.1 mm | 6 | |
| 8 May | Overcast | 20° /13° | 9.4 mm | 5 | |
| 9 May | Partly cloudy | 20° /13° | 3 mm | 5 | |
| 10 May | Sunny | 22° /13° | 1.6 mm | 6 | |
| 11 May |  Cloudy | 22° /15° | 1.3 mm | 6 | |
| 12 May | Overcast | 21° /15° | 2.1 mm | 6 | |
| 13 May | Patchy rain possible | 21° /16° | 13.4 mm | 5 | |
| 14 May | Partly cloudy | 23° /16° | 4 mm | 6 | |
| 15 May | Overcast | 21° /15° | 2.4 mm | 5 | |
| 16 May | Partly cloudy | 22° /15° | 1.8 mm | 5 | |
| 17 May | Sunny | 29° /19° | 0 mm | 8.3 | |
| 18 May | Sunny | 27° /20° | 0 mm | 9.1 | |
| 19 May | Sunny | 26° /20° | 0 mm | 9.5 | |
| 20 May |  Moderate rain | 19° /18° | 8.6 mm | 2.6 | |
| 21 May | Moderate rain | 18° /17° | 16.3 mm | 4 | |
| 22 May | Patchy rain possible | 27° /18° | 1.1 mm | 5 | |
| 23 May | Cloudy | 24° /18° | 0 mm | 5 | |
| 24 May | Moderate rain | 19° /18° | 14.8 mm | 4 | |
| 25 May | Patchy rain possible | 23° /18° | 0.6 mm | 5 | |
| 26 May | Moderate rain | 16° /14° | 5 mm | 4 | |
| 27 May | Cloudy | 18° /14° | 0 mm | 4 | |
| 28 May | Patchy rain possible | 17° /15° | 1 mm | 4 | |
| 29 May | Patchy rain possible | 25° /16° | 0.2 mm | 4 | |
| 30 May | Patchy rain possible | 22° /18° | 0.3 mm | 4 | |
| 31 May | Overcast | 20° /16° | 12.6 mm | 5 | |
| Next | |||||
Japan weather in May vs April vs June
| April | May | June | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 18°/12° | 21°/15° | 26°/20° |
| Rainfall | 141 mm | 169 mm | 169 mm |
| Wind | 25.4 km/h | 24.9 km/h | 21.4 km/h |
| Humidity | 60% | 65% | 69% |
| Rainy days | 25 days | 26 days | 23 days |
| Dry days | 5 days | 5 days | 7 days |
Planning a trip to Japan? Discover the best time to visit
Guide for Japan in May
In May, Japan experiences a transition from spring to early summer, resulting in varied weather conditions throughout the month. At the beginning of May, the weather in Japan is generally mild and pleasant, with cherry blossoms still in bloom in some regions.
Temperatures in Tokyo and other major cities typically range from 15° to 20°, making it an ideal time for outdoor activities and sightseeing.
As the month progresses, the weather becomes warmer and more humid, especially in southern regions such as Okinawa. By the end of May, temperatures can reach 25° to 30° in Tokyo and other urban areas, while the mountainous regions remain cooler.
Additionally, the latter part of the month marks the onset of the rainy season in southern Japan, bringing increased precipitation and occasional thunderstorms.
Overall, May offers a diverse weather experience in Japan, with the opportunity to enjoy the last traces of spring and the emergence of early summer conditions.
Travelers should be prepared for changing weather patterns and pack accordingly for both mild and warmer temperatures, as well as the possibility of rain towards the end of the month.
Japan in May - FAQ
Is May a good time to visit Japan?
What are the expected maximum and minimum temperatures in Japan during May?
How much rainfall should be expected in Japan during May?
What are the typical wind conditions in Japan during May?
What to pack to Japan in May?
As you prepare for your trip to Japan in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Japan, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in Japan
UV exposure in Japan during May
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Where is Japan?Get accurate weather forecasts for Japan, located at latitude 35.69 and longitude 139.692. Stay updated with localized weather information tailored for Japan.