Cool
Average highs are around 13°C, so pack for cooler days.
April verdict
Poor for holiday weather
Average highs are around 13°C, so pack for cooler days. Sunshine averages 6h per day, enough for a balanced month. Rainfall averages 99mm, so some wet days are possible.
Monthly averages
Temp
13°C
Rain
99mm
Sun
6h
Sea
10°C
Weather score
23
Poor
Cool
Average highs are around 13°C, so pack for cooler days.
Showers
Rainfall averages 99mm, so some wet days are possible.
Some sun
Sunshine averages 6h per day, enough for a balanced month.
Cool sea
Sea temperatures average 10°C, so the water can feel cool.
Map
Compare Dewa Sanzan, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
April13°C average high
April is close to Dewa Sanzan'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.
April99mm average rain
April sits on the drier side of Dewa Sanzan's year, which helps with sightseeing and transfers.
Driest monthsJanuary to May
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
April6 hours average sun
April is brighter than Dewa Sanzan's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to May and August
This stretch has the strongest sunshine in the monthly averages.
April10°C average sea
April is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJuly to September
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
April23 weather score
April scores below Dewa Sanzan's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
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