Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Weather Guide
Osaka, Osaka, Japan Average Monthly Weather
Weather score40Poor annual avg
Best months: August, September, July
Across the year, average daytime temperatures are around 20°C, sunshine averages 5h per day, and rainfall totals about 1394mm. Sea temperatures average 19°C across the year.
Annual weather
Annual averages
Temp
20°C
Rain
1394mm
Annual total
Sun
5h
Sea
19°C
Weather score
40
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 170mm, so some wet days are possible.
Some sun
Sunshine averages 5.6h per day, enough for a balanced month.
Swimmable
Sea temperatures average 25°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Osaka, Osaka, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July31°C average high
July is one of Osaka'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
July170mm average rain
July is wetter than Osaka's yearly average, so flexible plans matter more.
Driest monthsJanuary to March and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July5.6 hours average sun
July sits close to Osaka's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July25°C average sea
July sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 25°C in this stretch, so swimming comfort is at its strongest.
Weather score
July54 weather score
July scores above Osaka's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to October
These months have the strongest weather score in the monthly averages.
