Mild
Average highs are around 26°C, so days are mild rather than hot.
June verdict
Nagasaki, Nagasaki, Japan in June
Weather score45Mixed
Mixed for holiday weather
Average highs are around 26°C, so days are mild rather than hot. Sunshine averages 4.7h per day, so this is not one of the brighter months. Rainfall averages 362mm, so showers are a real planning factor.
June weather
Monthly averages
Temp
26°C
Rain
362mm
Sun
4.7h
Sea
23°C
Weather score
45
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 362mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.7h 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 Nagasaki, Nagasaki, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
June26°C average high
June 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
June362mm average rain
June is one of Nagasaki's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to March and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
June4.7 hours average sun
June sits close to Nagasaki's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay and July to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
June23°C average sea
June is close to Nagasaki's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 25°C in this stretch, so swimming comfort is at its strongest.
Weather score
June45 weather score
June sits close to Nagasaki's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsAugust to October
These months have the strongest weather score in the monthly averages.
