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.
Nozawa Onsen Weather in September
September in Nozawa Onsen sees daytime temperatures around 25°C (77°F) and lows of 16°C (61°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Nozawa Onsen in September
Nozawa Onsen is in the rainy season in September, with rain on around 20 days and an average of 212 mm (8.3 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in Nozawa Onsen in September
Daytime temperatures in Nozawa Onsen reach 25°C (77°F) in September, dropping to 16°C (61°F) at night. September is in the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 16°C (61°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Nozawa Onsen in September
You can expect a moderate amount of sunlight, with approximately 128 hours. Even though this month is part of the wet season, you can still see the sun occasionally.For Nozawa Onsen itself, May 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.
Nozawa Onsen Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
25°C (77°F)
Chance of Rain
67%
Precipitation
212 mm (8.3 in)
Rainy days
20 days
Humidity
79% *
Sunshine
128 hours *
Percentage Sunshine
*
* Data from: Joetsu, Japan (30 KM, 19 Miles).
Nozawa Onsen Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Nozawa Onsen - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Nozawa Onsen typically drop from around 28°C (82°F) at the start of September to approximately 23°C (73°F) by the end. Nights are pleasant, with lows typically ranging from 15°C (59°F) to 21°C (70°F).
Average temperatures in September
Daily Historical Precipitation
49-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 Nozawa Onsen in September
Browse day-by-day weather records for Nozawa Onsen spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nozawa Onsen historical weather extremes in September
Based on 20 years of weather observations in Nozawa Onsen between 2006 and 2026, these are the recorded extremes.
- Nozawa Onsen recorded its highest September temperature of 35°C (95°F) on September 3, 2020.
- Nozawa Onsen experienced its chilliest September day on September 30, 2007, reaching only 17°C (63°F).
- The lowest overnight temperature recorded in September was 10°C (50°F) (September 28, 2008).
- The wettest September day on record brought 110 mm (4.3 in) of precipitation to Nozawa Onsen (September 16, 2013).
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 Nozawa Onsen in September
For Nozawa Onsen in September, 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. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Nozawa Onsen in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Camping6/10
Nozawa Onsen 3-Day Forecast
More climate data for Nozawa Onsen
Temperature Rainfall Sunshine Humidity
See the full Nozawa Onsen 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
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