Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Oki Islands, Japan Average Monthly Weather
Weather score34Poor annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 18°C, sunshine averages 4.8h per day, and rainfall totals about 1812mm. Sea temperatures average 19°C across the year.
Annual weather
Annual averages
Temp
18°C
Rain
1812mm
Annual total
Sun
4.8h
Sea
19°C
Weather score
34
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 139mm, so some wet days are possible.
Some sun
Sunshine averages 6.7h 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 Oki Islands, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August30°C average high
August is one of Oki Islands' warmest months, with daytime heat above the yearly average.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
August139mm average rain
August sits on the drier side of Oki Islands' year, which helps with sightseeing and transfers.
Driest monthsFebruary to May, August, and October to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.7 hours average sun
August is one of Oki Islands' 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 Oki Islands' warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
August65 weather score
August is one of Oki Islands' best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
Hotels near Oki Islands, Japan
Marriott
Fairfield by Marriott Okayama Hiruzen HighlandManiwa, Okayama, Japan
Fairfield by Marriott Okayama TsuyamaTsuyama, Okayama, Japan
Fairfield by Marriott Hyogo Kannabe HighlandToyooka, Hyogo, Japan
Fairfield by Marriott Hyogo Tajima YabuYabu, Hyogo, Japan
Fairfield by Marriott Hiroshima SeraSera, Hiroshima, Japan
Yoruya, a Member of Design Hotels™Kurashiki shi, Japan