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Hamamatsu

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Hamamatsu Weather and climate

Data source：Meteostat
Update date：2025-09

Hamamatsu year round climate
  • Spring (March–May): Average 11.9–19.4°C, mild climate but with relatively high rainfall, especially in April and May. Common activities: enjoying nature, flower viewing, visiting Hamamatsu Castle. Recommended clothing: light jacket, long-sleeved shirts and pants.
  • Summer (June–August): Average 23.0–28.3°C, hot and humid with relatively high rainfall. July is the rainiest month. Common activities: beach activities, swimming, outdoor sports (pay attention to sun protection and rain protection). Recommended clothing: light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 15.4–26.4°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: autumn leaves viewing, outdoor excursions, enjoying autumn cuisine. Recommended clothing: light jacket, long-sleeved shirts and pants.
  • Winter (December–February): Average 6.6–8.6°C, cold and dry with low rainfall. Common activities: onsen experience, indoor activities. Recommended clothing: warm jacket, sweater, scarf and gloves.
Hamamatsu climatological average

Annual average temperature: approx. 17.7°C / Annual rainfall: approx. 2344 mm / Summer humidity: 70%–80% / Rainiest month: July

Hamamatsu monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.6°C
39.1
February
7.9°C
94.9
March
11.9°C
149.3
April
16.7°C
230.4
May
19.4°C
311.4
June
23°C
321.8
July
27.9°C
342.4
August
28.3°C
222.1
September
26.4°C
269.1
October
20°C
185.6
November
15.4°C
137
December
8.6°C
40.9
Hamamatsu weather for the next seven days
10/13
Monday
Patchy rain nearby
30.4°C/22.9°C
10/14
Tuesday
Patchy rain nearby
21.7°C/19.4°C
10/15
Wednesday
Moderate rain
21°C/18.4°C
10/16
Thursday
Patchy rain nearby
24.2°C/20.7°C
10/17
Friday
Patchy rain nearby
23.9°C/19.8°C
10/18
Saturday
Patchy rain nearby
23.9°C/19.2°C
10/19
Sunday
Patchy rain nearby
26.3°C/20.9°C

Hamamatsu FAQ

What is the best time to visit?
The best times to visit Hamamatsu are usually spring and autumn, when the weather is mild and suitable for visiting various attractions.
Which attractions are must-visit?
Hamamatsu Castle and Hamamatsu Flower Park are must-visit attractions. In addition, there are many recommended restaurants around Lake Hamana, which are suitable for dining on a day trip to Lake Hamana.