Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Sera, Hiroshima, Japan in May
Weather score39Poor
Poor for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 6.5h per day, enough for a balanced month. Rainfall averages 141mm, so some wet days are possible.
May weather
Monthly averages
Temp
21°C
Rain
141mm
Sun
6.5h
Sea
18°C
Weather score
39
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 141mm, so some wet days are possible.
Some sun
Sunshine averages 6.5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Weather map
Compare Sera, Hiroshima, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May21°C average high
May is close to Sera's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May141mm average rain
May sits near Sera's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
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
May6.5 hours average sun
May is one of Sera's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril to May and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May18°C average sea
May is close to Sera'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
May39 weather score
May sits close to Sera'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.
