Mild
Average highs are around 25°C, so days are mild rather than hot.
June verdict
Karatsu, Japan in June
Weather score43Mixed
Mixed for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 4.8h per day, so this is not one of the brighter months. Rainfall averages 308mm, so showers are a real planning factor.
June weather
Monthly averages
Temp
25°C
Rain
308mm
Sun
4.8h
Sea
21°C
Weather score
43
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 308mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.8h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Weather map
Compare Karatsu, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
June25°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
June308mm average rain
June is one of Karatsu'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
June4.8 hours average sun
June sits close to Karatsu's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
June21°C average sea
June is close to Karatsu'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
June43 weather score
June sits close to Karatsu'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.
Hotels near Karatsu, Japan
Marriott
Fairfield by Marriott Saga Ureshino OnsenUreshino, Saga, Japan
The Ritz-Carlton, FukuokaFukuoka, Japan
Four Points Flex by Sheraton Fukuoka HakataFukuoka, Fukuoka, Japan
Iki Retreat by Onko Chishin, a Member of Design Hotels™Iki, Nagasaki, Japan
Nagasaki Marriott HotelNagasaki, Nagasaki, Japan
Fairfield by Marriott Fukuoka UkihaUkiha, Fukuoka, Japan