Mild
Average highs are around 24°C, so days are mild rather than hot.
September verdict
Iwaki, Japan in September
Weather score48Mixed
Mixed for holiday weather
Average highs are around 24°C, so days are mild rather than hot. Sunshine averages 4h per day, so this is not one of the brighter months. Rainfall averages 177mm, so some wet days are possible.
September weather
Monthly averages
Temp
24°C
Rain
177mm
Sun
4h
Sea
23°C
Weather score
48
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 177mm, so some wet days are possible.
Limited sun
Sunshine averages 4h per day, so this is not one of the brighter months.
Swimmable
Sea temperatures average 23°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Iwaki, 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 monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
September177mm average rain
September is one of Iwaki's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to February and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4 hours average sun
September is one of Iwaki's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to May and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September23°C average sea
September is one of Iwaki's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
September48 weather score
September sits close to Iwaki's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
Hotels near Iwaki, Japan
Marriott
Fairfield by Marriott Tochigi MotegiTochigi, Tochigi, Japan
Four Points Flex by Sheraton UtsunomiyaUtsunomiya, Tochigi, Japan
Fairfield by Marriott Tochigi UtsunomiyaTochigi, Tochigi, Japan
Fairfield by Marriott Tochigi NikkoTochigi, Tochigi, Japan
The Ritz-Carlton, NikkoNikko, Tochigi, Japan
The Westin SendaiSendai, Miyagi, Japan