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Weather in Japan for May 2025

Your guide to Japan weather in May - trends and predictions
  • In general, the average temperature in Japan at the beginning of May is 22.1 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 22.1 °C by the end of May.

  • Japan sees moderate rainfall in May, averaging 10 rainy days.

  • Is May a good time to visit Japan? check out the best time to travel to Japan page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
21
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/14°
Temperatures
Average wind speed
26 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Japan in May average weather

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Temperatures trend during May in Japan

See the weather trend as well as the moving average line
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May weather day by day

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Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
20° /13° 15.2 mm 5
2 May Sunny
Sunny
20° /11° 1.9 mm 5
3 May Overcast
Overcast
21° /12° 0 mm 6
4 May Sunny
Sunny
24° /15° 0 mm 6
5 May Overcast
Overcast
25° /17° 0 mm 6
6 May Partly cloudy
Partly cloudy
24° /17° 0 mm 7
7 May Moderate or heavy rain shower
Moderate or heavy rain shower
21° /15° 17.2 mm 5
8 May Moderate or heavy rain shower
Moderate or heavy rain shower
17° /11° 27.3 mm 4
9 May Overcast
Overcast
17° /10° 2.7 mm 4
10 May Sunny
Sunny
22° /12° 0 mm 6
11 May Moderate or heavy rain shower
Moderate or heavy rain shower
21° /14° 3.7 mm 5
12 May Overcast
Overcast
21° /15° 0 mm 5
13 May Moderate or heavy rain shower
Moderate or heavy rain shower
19° /15° 23.1 mm 5
14 May Patchy rain possible
Patchy rain possible
20° /15° 1.6 mm 6
15 May Moderate or heavy rain shower
Moderate or heavy rain shower
18° /15° 4.2 mm 4
16 May Partly cloudy
Partly cloudy
24° /14° 0.9 mm 6
17 May Sunny
Sunny
25° /15° 0 mm 7
18 May Overcast
Overcast
28° /18° 0 mm 6
19 May Moderate or heavy rain shower
Moderate or heavy rain shower
23° /17° 14.5 mm 5
20 May Patchy rain possible
Patchy rain possible
21° /15° 13.5 mm 5
21 May Cloudy
Cloudy
25° /17° 3.3 mm 6
22 May Patchy rain possible
Patchy rain possible
24° /17° 2.6 mm 6
23 May Moderate or heavy rain shower
Moderate or heavy rain shower
20° /15° 10.1 mm 5
24 May Sunny
Sunny
24° /15° 0 mm 6
25 May Patchy rain possible
Patchy rain possible
22° /15° 0.3 mm 5
26 May Partly cloudy
Partly cloudy
22° /16° 0 mm 6
27 May Sunny
Sunny
24° /17° 0.2 mm 6
28 May Partly cloudy
Partly cloudy
23° /18° 16.9 mm 6
29 May Heavy rain at times
Heavy rain at times
22° /18° 20.9 mm 5
30 May Patchy rain possible
Patchy rain possible
23° /18° 3.1 mm 6
31 May Moderate or heavy rain shower
Moderate or heavy rain shower
19° /16° 22.8 mm 5
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Important Notice
Our weather forecast for Japan in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Japan forecast closer to your planned date for the most up-to-date weather information.

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?
Yes, May is a good time to traveling to Japan, read more about the best time to visit Japan.
What are the expected maximum and minimum temperatures in Japan during May?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Japan during May?
Significant rainfall exceeding 323 mm is expected in Japan during May, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Japan during May?
The average wind speed in Japan during May is 26 km/h, suggesting breezy to windy conditions, depending on your activities.

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
    • Warm Clothing: Sweaters, hoodies, long 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
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

May rainfall patterns in Japan

Explore the daily rainfall trends and prepare for Japans May weather 💧

UV exposure in Japan during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Location coordinates 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.

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