Hamamatsu Weather in May
May in Hamamatsu averages 24°C (75°F) during the day and 16°C (61°F) at night. May is part of the rainy season, with around 189 mm (7.4 in) of rainfall and frequent showers.
Rainfall in Hamamatsu in May
Hamamatsu is in the rainy season in May, with rain on around 14 days and an average of 189 mm (7.4 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Hamamatsu in May
May in Hamamatsu brings typical temperatures with highs around 24°C (75°F) and lows of 16°C (61°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. 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 Hamamatsu in May
With approximately 207 hours of sunshine, the days are filled with clear skies during the day. Rain typically falls in the afternoon or evening, keeping mornings and early parts of the day sunny.For Hamamatsu itself, April generally stands 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 Hamamatsu's climate page.
Hamamatsu Temperature in May
Min Temperature
16°C (61°F)
Max Temperature
24°C (75°F)
Chance of Rain
48%
Precipitation
189 mm (7.4 in)
Rainy days
14 days
Humidity
71%
Sunshine
207 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hamamatsu typically stay consistent throughout May, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 17°C (63°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 Hamamatsu in May
Browse day-by-day weather records for Hamamatsu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hamamatsu historical weather extremes in May
Our historical data for Hamamatsu spans 1976 to 2026, revealing these weather extremes.
- On May 29, 2026, temperatures climbed to 32°C (90°F), marking the warmest May day on record.
- On May 2, 1993, Hamamatsu saw its coldest May day with temperatures maxing out at 13°C (55°F).
- Hamamatsu registered its coldest May night on May 1, 1977, with temperatures dropping to 7°C (45°F).
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
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What to Wear in Hamamatsu in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Hamamatsu 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 Hamamatsu's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hamamatsu climate overview or explore weather in Japan.
