Hamamatsu Weather in April
April in Hamamatsu brings pleasant temperatures around 20°C (68°F) during the day, dropping to 11°C (52°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Hamamatsu in April
As part of the rainy season, Hamamatsu sees around 16 days of rain in April, with an average of 173 mm (6.8 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 April
April in Hamamatsu brings typical temperatures with highs around 20°C (68°F) and lows of 11°C (52°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Hamamatsu in April
There are approximately 201 hours of sunshine this month, despite being the rainy season. Rain often arrives in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, it could still be a nice time to visit.If you favor pleasant temperatures and minimal rainfall, April is one of the best months to visit Hamamatsu.
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 April
Min Temperature
11°C (52°F)
Max Temperature
20°C (68°F)
Chance of Rain
52%
Precipitation
173 mm (6.8 in)
Rainy days
16 days
Humidity
66%
Sunshine
201 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hamamatsu typically rise from around 17°C (63°F) at the start of April to approximately 21°C (70°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 13°C (55°F).
Average temperatures in April
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 April
Historical weather for Hamamatsu in April
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 April
Our historical data for Hamamatsu spans 1976 to 2026, revealing these weather extremes.
- The hottest April day on record in Hamamatsu reached 28°C (82°F) (April 21, 2023).
- Hamamatsu experienced its chilliest April day on April 1, 2017, reaching only 9°C (48°F).
- Hamamatsu registered its coldest April night on April 14, 1993, with temperatures dropping to 0°C (32°F).
Best Places in Japan in April
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in April →
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What to Wear in Hamamatsu in April
Comfortable temperatures call for an easy wardrobe in April. 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Hamamatsu in April
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.
