Mild
Average highs are around 24°C, so days are mild rather than hot.
September verdict
Onogawa Onsen, Japan in September
Weather score49Mixed
Mixed for holiday weather
Average highs are around 24°C, so days are mild rather than hot. Sunshine averages 4.1h per day, so this is not one of the brighter months. Rainfall averages 148mm, so some wet days are possible.
September weather
Monthly averages
Temp
24°C
Rain
148mm
Sun
4.1h
Sea
25°C
Weather score
49
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 148mm, so some wet days are possible.
Limited sun
Sunshine averages 4.1h per day, so this is not one of the brighter months.
Swimmable
Sea temperatures average 25°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Onogawa Onsen, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September24°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September148mm average rain
September is wetter than Onogawa Onsen's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4.1 hours average sun
September is below Onogawa Onsen's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsApril to May and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September25°C average sea
September is one of Onogawa Onsen's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
September49 weather score
September scores above Onogawa Onsen's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
Hotels near Onogawa Onsen, Japan
Marriott
The Westin SendaiSendai, Miyagi, Japan
Fairfield by Marriott Tochigi NikkoTochigi, Tochigi, Japan
The Ritz-Carlton, NikkoNikko, Tochigi, Japan
Fairfield by Marriott Tochigi UtsunomiyaTochigi, Tochigi, Japan
Four Points Flex by Sheraton UtsunomiyaUtsunomiya, Tochigi, Japan
Fairfield by Marriott Tochigi MotegiTochigi, Tochigi, Japan