SeasonMapPort Douglas (Great Barrier Reef) weather in September
Australia
September in Port Douglas: hot, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Port Douglas · #145 of 1383 destinations to visit in September · comfort 92/100 (tier S)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Port Douglas in September
Other months in Port Douglas
Port Douglas's forum calls October one of the best months — warm, ahead of the wet season's humidity, with reliable reef conditions. The catch regulars flag: stinger season starts around October and runs into the following year's autumn, so ocean swimming without a stinger suit is off the table even on an otherwise perfect-looking day.
Add your own note from Port Douglas's card on the map.
Port Douglas climate normals — September
| Daytime high | 29°C / 85°F | 🥵 hot |
|---|---|---|
| Nighttime low | 22°C / 71°F | |
| Feels like (high) | 31°C / 88°F | |
| Sea temperature | 24°C / 76°F | 🙂 pleasant |
| Rainfall | 41 mm / 1.6 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 20°C / 67°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 12 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Port Douglas in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsDry season, Spring break in Australia, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Port Douglas's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherPort Douglas's weather peaks August–October, best around September.
Best weatherFair weatherToughest weather
What's on in Port Douglas in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Dry season
1 May – 31 OctCrowdedMay to October is when the reef boats run almost every day, the Daintree road is dependable and the town is full. It is also when the rates and the restaurant queues are at their highest.
Nearby, and something's on
Within 300 km of Port Douglas — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Port Douglas?
Port Douglas in September — FAQ
- Is September a good time to visit Port Douglas?
- September in Port Douglas: hot, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Port Douglas on SeasonMap's comfort score (92/100).
- What is the weather like in Port Douglas in September?
- In September, Port Douglas averages a daily high of 29.2°C and a low of 21.7°C, with about 40.8 mm of rain over roughly 7 rainy days.
- What is the air quality in Port Douglas in September?
- Port Douglas has a mean US Air Quality Index of about 43 in September.
Other months in Port Douglas
Compare Port Douglas in September
Warmer or cooler than Port Douglas in September
Similar destinations in Oceania — September
Within 300 km: Cairns' Dry season on 1 May – 31 Oct.