Kumamoto Weather in May
Kumamoto in May sees high daytime temperatures of 24°C (75°F) and nighttime lows of 16°C (61°F). As part of the rainy season, showers are frequent and often heavy. Budget around 180 mm (7.1 in) of rainfall for the month.
Rainfall in Kumamoto in May
Kumamoto is in the rainy season in May, with rain on around 16 days and an average of 180 mm (7.1 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Kumamoto in May
In May, Kumamoto sees high temperatures, with highs of 24°C (75°F). Nights drop to around 16°C (61°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Kumamoto in May
Expect sunny days throughout the month, with an estimated 197 hours of sunshine. Despite being the rainy season, it could still be a nice time to visit. Rain often arrives later in the day, keeping most of the days sunny.If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Kumamoto's climate page.
Kumamoto Temperature in May
Min Temperature
16°C (61°F)
Max Temperature
24°C (75°F)
Chance of Rain
54%
Precipitation
180 mm (7.1 in)
Rainy days
16 days
Humidity
67%
Sunshine
197 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kumamoto typically rise from around 23°C (73°F) at the start of May to approximately 27°C (81°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 18°C (64°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Kumamoto in May
Browse day-by-day weather records for Kumamoto spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kumamoto historical weather extremes in May
Based on 50 years of weather observations in Kumamoto between 1976 and 2026, these are the recorded extremes.
- Kumamoto recorded its highest May temperature of 34°C (93°F) on May 25, 2000.
- On May 1, 1983, Kumamoto saw its coldest May day with temperatures maxing out at 14°C (57°F).
- The lowest overnight temperature recorded in May was 4°C (39°F) (May 4, 1987).
Best Places in Japan in May
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in May →
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unpleasant
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What to Wear in Kumamoto in May
For Kumamoto in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Kumamoto in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Kumamoto's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kumamoto climate overview or explore weather in Japan.
