Niigata Weather in September
September in Niigata brings high temperatures around 27°C (81°F) during the day, dropping to 20°C (68°F) at night, with quite a bit of rainfall expected, averaging around 157 mm (6.2 in) for the month.
Rainfall in Niigata in September
Typically around 19 days of rainfall are expected, averaging 157 mm (6.2 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 Niigata in September
September in Niigata sees highs of 27°C (81°F) and lows of 20°C (68°F) overnight. The month of September belongs to the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 20°C (68°F), the nights are warm and generally comfortable.
Sunshine in Niigata in September
The area enjoys a balanced 155 hours of sunlight, ensuring it's neither too overcast nor too sunny.So this is a great month to visit if you prefer dry days with pleasant temperatures.
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 Niigata's climate page.
Niigata Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
27°C (81°F)
Chance of Rain
64%
Precipitation
157 mm (6.2 in)
Rainy days
19 days
Humidity
72%
Sunshine
155 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Niigata 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 16°C (61°F) to 22°C (72°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 Niigata in September
Browse day-by-day weather records for Niigata spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Niigata historical weather extremes in September
The extremes listed below come from historical weather data collected in Niigata from 1976 through 2025.
- The warmest day in September was on September 3, 2020, with a maximum of 38°C (100°F).
- The coldest September day was on September 28, 1983, with a maximum of 17°C (63°F).
- The lowest overnight temperature recorded in September was 9°C (48°F) (September 23, 2001).
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
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What to Wear in Niigata 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 Niigata 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 Niigata's climate page.
Temperature Rainfall Sunshine Humidity
See the full Niigata climate overview or explore weather in Japan.
