Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
Weather Guide
Naruko, Japan Average Monthly Weather
Weather score30Poor annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 14°C, sunshine averages 4.8h per day, and rainfall totals about 1343mm. Sea temperatures average 15°C across the year.
Annual weather
Annual averages
Temp
14°C
Rain
1343mm
Annual total
Sun
4.8h
Sea
15°C
Weather score
30
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 180mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.6h per day, enough for a balanced month.
Swimmable
Sea temperatures average 23°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Naruko, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August27°C average high
August is one of Naruko's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August180mm average rain
August is one of Naruko's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to May and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August5.6 hours average sun
August is brighter than Naruko's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to May
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August23°C average sea
August is one of Naruko'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
August58 weather score
August is one of Naruko'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.
