Mild
Average highs are around 20°C, so days are mild rather than hot.
May verdict
Poor for holiday weather
Average highs are around 20°C, so days are mild rather than hot. Sunshine averages 5.6h per day, enough for a balanced month. Rainfall averages 255mm, so showers are a real planning factor.
Monthly averages
Temp
20°C
Rain
255mm
Sun
5.6h
Sea
21°C
Weather score
36
Poor
Mild
Average highs are around 20°C, so days are mild rather than hot.
Wet
Rainfall averages 255mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.6h per day, enough for a balanced month.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Compare Mikurajima, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
May20°C average high
May is close to Mikurajima's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
May255mm average rain
May sits near Mikurajima's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May5.6 hours average sun
May is brighter than Mikurajima's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay and August
This stretch has the strongest sunshine in the monthly averages.
May21°C average sea
May is below Mikurajima's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
May36 weather score
May sits close to Mikurajima'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.
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