Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
September verdict
Great Barrier Reef, Australia in September
Weather score84Very good
Very good for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 9.3h per day, so bright days are a strong part of the month. Rainfall averages 10mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
28°C
Rain
10mm
Sun
9.3h
Sea
24°C
Weather score
84
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 10mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.3h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 24°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Great Barrier Reef, Australia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September28°C average high
September is close to Great Barrier Reef's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to March and November to December
This stretch sets the upper range for average daytime heat.
Rain
September10mm average rain
September is one of Great Barrier Reef's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September9.3 hours average sun
September is one of Great Barrier Reef's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsSeptember to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September24°C average sea
September is below Great Barrier Reef's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJanuary to March and December
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
September84 weather score
September scores above Great Barrier Reef's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsApril and September to November
These months have the strongest weather score in the monthly averages.