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Weather in Kumamoto for May 2026

Your guide to Kumamoto weather in May - trends and predictions

    Temperatures

  • So far, May 2026 in Kumamoto is slightly warmer than the historical average by 0.7 °C.

  • The forecast for the next days in Kumamoto predicts temperatures to be around 28 °C, close to the historical average.

  • In general, the average temperature in Kumamoto at the beginning of May is 21.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 26.4 °C by the end of May.

    • Rain 🌧️

  • Kumamoto experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 306.5 mm.

    • More

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

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
8
Dry days
Average rainy days
23
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/15°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Kumamoto Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
22°
2
Patchy rain possible
21°
3
Sunny
21°
4
Overcast
20°
5
Patchy rain possible
22°
6
Moderate rain at times
21°
7
Sunny
23°
8
Partly cloudy
22°
9
Moderate or heavy rain shower
21°
10
Patchy rain possible
22°
11
Moderate rain at times
21°
12
Patchy rain possible
22°
13
Sunny
25°
14
Sunny
26°
15
Overcast
27°
16
Light rain shower
27°
17
Light rain shower
26°
18
Light rain shower
27°
19
Patchy rain possible
26°
20
Light rain shower
29°
21
Partly cloudy
25°
22
Partly cloudy
27°
23
Patchy rain possible
25°
24
Overcast
25°
25
Sunny
27°
26
Patchy rain possible
27°
27
Moderate or heavy rain shower
24°
28
Moderate or heavy rain shower
23°
29
Patchy rain possible
27°
30
Sunny
28°
31
Sunny
29°

Temperatures trend during May in Kumamoto

See the weather trend as well as the moving average line

May weather in Kumamoto day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
 22° /13° 7.4 mm 6
2 May Patchy rain possible
Patchy rain possible
 21° /12° 3.8 mm 7
3 May Sunny
Sunny
 21° /12° 37.2 mm 5
4 May Overcast
Overcast
 20° /13° 1.4 mm 7
5 May Patchy rain possible
Patchy rain possible
 22° /10° 1.9 mm 8
6 May Moderate rain at times
Moderate rain at times
 21° /12° 4.9 mm 7
7 May Sunny
Sunny
 23° /12° 0 mm 8
8 May Partly cloudy
Partly cloudy
 22° /12° 0.9 mm 8
9 May Moderate or heavy rain shower
Moderate or heavy rain shower
 21° /14° 17.9 mm 8
10 May Patchy rain possible
Patchy rain possible
 22° /13° 0.8 mm 8
11 May Moderate rain at times
Moderate rain at times
 21° /13° 2.6 mm 7
12 May Patchy rain possible
Patchy rain possible
 22° /13° 3.6 mm 8
13 May Sunny
Sunny
 25° /13° 0.1 mm 8
14 May Sunny
Sunny
 26° /14° 0.6 mm 9
15 May Overcast
Overcast
 27° /15° 0 mm 9
16 May Light rain shower
Light rain shower
 27° /17° 7.6 mm 9
17 May Light rain shower
Light rain shower
 26° /17° 2.9 mm 8
18 May Light rain shower
Light rain shower
 27° /17° 5.7 mm 8
19 May Patchy rain possible
Patchy rain possible
 26° /16° 0.1 mm 8
20 May Light rain shower
Light rain shower
 29° /19° 2.7 mm 6
21 May Partly cloudy
Partly cloudy
 25° /18° 51.6 mm 6
22 May Partly cloudy
Partly cloudy
 27° /18° 2.7 mm 6
23 May Patchy rain possible
Patchy rain possible
 25° /17° 2.7 mm 5
24 May Overcast
Overcast
 25° /17° 20.8 mm 7
25 May Sunny
Sunny
 27° /17° 0.3 mm 8
26 May Patchy rain possible
Patchy rain possible
 27° /17° 4.9 mm 7
27 May Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /17° 59.3 mm 4
28 May Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /15° 42.4 mm 6
29 May Patchy rain possible
Patchy rain possible
 27° /19° 0.5 mm 10.6
30 May Sunny
Sunny
 28° /17° 0 mm 10.8
31 May Sunny
Sunny
 29° /17° 0 mm 10.5
Next
Important Notice
Our weather forecast for Kumamoto 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 Kumamoto forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Kumamoto weather in May vs April vs June

Compare May weather in Kumamoto with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AprilMayJune
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures20°/11°24°/15°26°/20°
Rainfall154 mm306 mm490 mm
Wind13.1 km/h12.8 km/h12.6 km/h
Humidity70%69%81%
Rainy days19 days23 days25 days
Dry days11 days8 days5 days

Planning a trip to Kumamoto? Discover the best time to visit

Kumamoto in May - FAQ

What are the expected maximum and minimum temperatures in Kumamoto during May?

During May, expect a variety of temperatures with highs around 24° and lows near 15°, suitable for diverse activities and preferences.

How much rainfall should be expected in Kumamoto during May?

Significant rainfall exceeding 306.5 mm is expected in Kumamoto during May, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Kumamoto during May?

The average wind speed in Kumamoto during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Kumamoto in May?

As you prepare for your trip to Kumamoto 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 Kumamoto, 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 Kumamoto

Explore the daily rainfall trends and prepare for Kumamotos May weather 💧
Typically, Kumamoto has 23 rainy days in May with a total of 306.5 mm of rainfall.

UV exposure in Kumamoto during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Provinces in Kumamoto
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Location coordinates Where is Kumamoto?

Get accurate weather forecasts for Kumamoto, located at latitude 32.806 and longitude 130.692. Stay updated with localized weather information tailored for Kumamoto.

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