Cool
Average highs are around 16°C, so pack for cooler days.
April verdict
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 5.3h per day, enough for a balanced month. Rainfall averages 175mm, so some wet days are possible.

Monthly averages
Temp
16°C
Rain
175mm
Sun
5.3h
Sea
17°C
Weather score
23
Poor
Cool
Average highs are around 16°C, so pack for cooler days.
Showers
Rainfall averages 175mm, so some wet days are possible.
Some sun
Sunshine averages 5.3h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Compare Shizuoka, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
April16°C average high
April is close to Shizuoka'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.
April175mm average rain
April sits near Shizuoka's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
April5.3 hours average sun
April sits close to Shizuoka's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJanuary to May, August, and December
This stretch has the strongest sunshine in the monthly averages.
April17°C average sea
April is below Shizuoka's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
April23 weather score
April is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.