Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Weather Guide
Niigata, Japan Average Monthly Weather
Weather score32Poor annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 17°C, sunshine averages 4.4h per day, and rainfall totals about 1763mm. Sea temperatures average 17°C across the year.
Annual weather
Annual averages
Temp
17°C
Rain
1763mm
Annual total
Sun
4.4h
Sea
17°C
Weather score
32
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 135mm, so some wet days are possible.
Some sun
Sunshine averages 6.5h per day, enough for a balanced month.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Niigata, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August31°C average high
August is one of Niigata's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August135mm average rain
August sits near Niigata's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to June and August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.5 hours average sun
August is one of Niigata'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
August27°C average sea
August is one of Niigata's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
Weather score
August62 weather score
August is one of Niigata's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
Hotels near Niigata, Japan
Marriott
The Ritz-Carlton, NikkoNikko, Tochigi, Japan
Fairfield by Marriott Tochigi NikkoTochigi, Tochigi, Japan
Fairfield by Marriott Tochigi UtsunomiyaTochigi, Tochigi, Japan
The Westin SendaiSendai, Miyagi, Japan
Four Points Flex by Sheraton UtsunomiyaUtsunomiya, Tochigi, Japan
Courtyard HakubaNagano, Nagano, Japan