Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
Weather Guide
Iwaki, Japan Average Monthly Weather
Weather score36Poor annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 17°C, sunshine averages 5.2h per day, and rainfall totals about 1312mm. Sea temperatures average 17°C across the year.
Annual weather
Annual averages
Temp
17°C
Rain
1312mm
Annual total
Sun
5.2h
Sea
17°C
Weather score
36
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 145mm, so some wet days are possible.
Some sun
Sunshine averages 5.7h per day, enough for a balanced month.
Swimmable
Sea temperatures average 24°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
August28°C average high
August is one of Iwaki's warmest months, with daytime heat above the yearly average.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
August145mm average rain
August is wetter than Iwaki's yearly average, so flexible plans matter more.
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
August5.7 hours average sun
August is brighter than Iwaki's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJanuary to May and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August24°C average sea
August 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
August62 weather score
August is one of Iwaki's best weather-score months, combining the strongest overall balance in the yearly averages.
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