Chase the autumn leaves in Japan
Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
Hamamatsu Weather in September
Hamamatsu in September averages 29°C (84°F) during the day and 22°C (72°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Hamamatsu in September
You can expect rain on roughly 18 days based on historical data, averaging 264 mm (10 in) for the month. 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 Hamamatsu in September
Daytime highs in Hamamatsu in September reach 29°C (84°F), with nights around 22°C (72°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Hamamatsu in September
The city usually sees around 169 hours of sunlight, indicating a moderately sunny period.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Hamamatsu. Our weather planner can help you explore destinations with more pleasant weather conditions.
Hamamatsu Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
29°C (84°F)
Chance of Rain
58%
Precipitation
264 mm (10 in)
Rainy days
18 days
Humidity
74%
Sunshine
169 hours
Percentage Sunshine
Hamamatsu Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hamamatsu - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hamamatsu typically drop from around 30°C (86°F) at the start of September to approximately 26°C (79°F) by the end. Nights are warm, with lows typically ranging from 19°C (66°F) to 24°C (75°F).
Average temperatures in September
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 September
Historical weather records for Hamamatsu in September
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 September
According to our 50 years of weather records for Hamamatsu, the following extremes were recorded between 1976 and 2026.
- The hottest September day on record in Hamamatsu reached 36°C (97°F) (September 3, 2003).
- On September 27, 1980, Hamamatsu saw its coldest September day with temperatures maxing out at 17°C (63°F).
- Nighttime temperatures dropped to 12°C (54°F) on September 28, 1980, marking the coldest September night on record.
Best Places in Japan in September
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Hamamatsu in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Hamamatsu in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Hamamatsu 3-Day Forecast
More climate data for Hamamatsu
Temperature Rainfall Sunshine Humidity
See the full Hamamatsu climate overview or explore weather in Japan.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Chase the autumn leaves in Japan
Walk the 88 temple circuit
We recommend walking the 88 temple circuit from April til October. Although June, July and August can be a bit wet, hot and humid.
The famous bamboo forests of Arashiyama
The famous bamboo forests of Arashiyama lie just outside the city center of Kyoto and is unique in the world. If you look at photos of this bamboo forest, it looks like you have landed in a fairy-tale world.
10 reasons why you should visit Japan in winter
Here are 10 reasons why you should plan a winter trip to Japan. During this period, popular sights are less busy and prices for flights and hotels much cheaper.