Mild
Average highs are around 20°C, so days are mild rather than hot.
September verdict
Poor for holiday weather
Average highs are around 20°C, so days are mild rather than hot. Sunshine averages 5.3h per day, enough for a balanced month. Rainfall averages 164mm, so some wet days are possible.
Monthly averages
Temp
20°C
Rain
164mm
Sun
5.3h
Sea
20°C
Weather score
38
Poor
Mild
Average highs are around 20°C, so days are mild rather than hot.
Showers
Rainfall averages 164mm, so some wet days are possible.
Some sun
Sunshine averages 5.3h per day, enough for a balanced month.
Cool sea
Sea temperatures average 20°C, so the water can feel cool.
Map
Compare Noboribetsu, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
September20°C average high
September 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.
September164mm average rain
September is wetter than Noboribetsu's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September5.3 hours average sun
September is brighter than Noboribetsu's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to June
This stretch has the strongest sunshine in the monthly averages.
September20°C average sea
September is one of Noboribetsu's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to October
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
September38 weather score
September scores above Noboribetsu's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
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