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.
Myoko Weather in September
Myoko in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 16°C (61°F). As part of the rainy season, showers are frequent and often heavy. Budget around 237 mm (9.3 in) of rainfall for the month.
Rainfall in Myoko in September
Myoko is in the rainy season in September, with rain on around 20 days and an average of 237 mm (9.3 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Myoko in September
Temperatures in Myoko in September top out at 25°C (77°F) and drop to 16°C (61°F) overnight. During September, the summer season is in full swing. Conditions stay fairly consistent through the month, making it easier to plan what to wear. 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 Myoko in September
You can expect a moderate amount of sunlight, with approximately 142 hours. Even though this month is part of the wet season, you can still see the sun occasionally.For Myoko 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.
Myoko Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
25°C (77°F)
Chance of Rain
67%
Precipitation
237 mm (9.3 in)
Rainy days
20 days
Humidity
74% *
Sunshine
142 hours *
Percentage Sunshine
*
* Data from: Nagano, Japan (27 KM, 16 Miles).
Myoko Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Myoko - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Myoko 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 Myoko in September
Browse day-by-day weather records for Myoko spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Myoko historical weather extremes in September
Based on 20 years of weather observations in Myoko between 2006 and 2026, these are the recorded extremes.
- On September 3, 2020, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 17°C (63°F), recorded on September 30, 2007.
- The coldest night in September in Myoko was on September 28, 2008, with a minimum of 10°C (50°F).
- Peak precipitation in September occurred on September 16, 2013, when 104 mm (4.1 in) of precipitation was measured.
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 Myoko in September
For Myoko 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 Myoko in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Camping6/10
Myoko 3-Day Forecast
More climate data for Myoko
Temperature Rainfall Sunshine Humidity
See the full Myoko 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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