Kōchi Weather in May
Kōchi in May sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 9°C (48°F). Rainfall is fairly high this month at around 140 mm (5.5 in), so pack a rain jacket to stay dry.
Rainfall in Kōchi in May
Typically, you can expect about 17 days of rain this month, with 140 mm (5.5 in) on average. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Kōchi in May
May in Kōchi brings typical temperatures with highs around 19°C (66°F) and lows of 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Kōchi in May
Expect a lot of sunshine this month, with about 196 hours of sun. These sunny conditions add to the overall experience.For Kōchi itself, June and August generally stand out with 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 Kōchi's climate page.
Kōchi Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
58%
Precipitation
140 mm (5.5 in)
Rainy days
17 days
Humidity
70%
Sunshine
196 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kōchi typically stay consistent throughout May, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 13°C (55°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 Kōchi in May
Browse day-by-day weather records for Kōchi spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kōchi historical weather extremes in May
Based on 50 years of weather observations in Kōchi between 1976 and 2026, these are the recorded extremes.
- On May 17, 2023, temperatures climbed to 33°C (91°F), marking the warmest May day on record.
- Nighttime temperatures dropped to -1°C (30°F) on May 11, 2005, marking the coldest May night on record.
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 →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Kōchi in May
For Kōchi 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. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Kōchi 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 Kōchi's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kōchi climate overview or explore weather in Japan.
