Otari Weather in September
Otari in September averages 23°C (73°F) during the day and 15°C (59°F) at night. September is part of the rainy season, and falls within the summer season, so frequent rainfall is typical.
Rainfall in Otari in September
As part of the rainy season, Otari sees around 20 days of rain in September, with an average of 306 mm (12 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Otari in September
In September, Otari gets high temperatures, with highs of 23°C (73°F). Nights cool to around 15°C (59°F). This month falls in the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 15°C (59°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Otari in September
The month brings about 115 hours of sunlight, offering a comfortable mix of sun and rainy moments.For additional travel inspiration, our weather planner can help you discover destinations worldwide.
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 Otari's climate page.
Otari Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
23°C (73°F)
Chance of Rain
66%
Precipitation
306 mm (12 in)
Rainy days
20 days
Sunshine
115 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Otari typically drop from around 29°C (84°F) at the start of September to approximately 23°C (73°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 21°C (70°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 for Otari in September
Browse day-by-day weather records for Otari spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Otari historical weather extremes in September
According to our 49 years of weather records for Otari, the following extremes were recorded between 1976 and 2025.
- The warmest day in September was on September 11, 1977, with a maximum of 36°C (97°F).
- The lowest daytime temperature in September was 15°C (59°F), recorded on September 28, 1983.
- Otari registered its coldest September night on September 23, 2001, with temperatures dropping to 6°C (43°F).
- The wettest September day on record brought 88 mm (3.5 in) of precipitation to Otari (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
What to Wear in Otari in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Otari in September
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 Otari's climate page.
See the full Otari climate overview or explore weather in Japan.
