Hamilton Island weather in September

September heralds the onset of spring and is an excellent time to visit Hamilton Island.

You can expect clear, sunny blue skies, warm daily temperatures and little or no rain.

How hot is it in Hamilton Island in September?
Average daytime temperatures usually reach 25°C (77°F) in Hamilton Island in September, with moderate heat and humidity, falling to 20°C (68°F) at night.

What does the humidity feel like in Hamilton Island in September?
The average dew point temperature in Hamilton Island in September is 18°C (64°F), which feels comfortable. 

There are on average 10 days in September that may feel humid.

How sunny is it in Hamilton Island in September?
There are normally nine hours of bright sunshine each day in Hamilton Island in September – that's around 75% of daylight hours.

Sunrise & sunset in September?
Sunrise is around 6am with sunset around 6pm.

How warm is the sea around Hamilton Island in September?
The average sea temperature around Hamilton Island in September is 23°C (73°F), which is warm enough for swimming.

Does it rain in Hamilton Island in September?
There are usually two to three days with some rain in Hamilton Island in September and the average monthly rainfall is 9mm (‹1in).

How windy is it in Hamilton Island in September?
September sees an average wind speed of 22km/h (14 mph; 12 knots).

The predominant wind direction is from the south-east and east. However, north-east winds occur with increasing frequency from September through to January.

What to do in Hamilton Island in September?
September is the perfect time for exploring the island’s beaches and hiking trails, as well as swimming, snorkelling, scuba diving and sailing.

While you can sail all year-round in Hamilton Island, August to November is considered the most settled time of year for sailing in the Whitsundays.

Local holidays?

Hamilton Island weather in September

Temperature icon High Temp: 25°C (77°F)
temperature icon Low Temp: 20°C (68°F)
sun icon Sunshine: 9 hours per day
Moderately hot icon
Daylight: 12 hours per day
umbrella icon Wet Days: 3 days with some rain
rain cloud Rainfall: 9 mm (≤1 in) per month
Low heat icon Comfort Level: Low heat; 74% relative humidity
temperature icon Dew Point: 18°C (64°F) – Comfortable
Moderately hot icon
UV Index: Very high
wind icon Wind speed: 22 km/h (14 mph; 12 knots)
swimming icon Sea Temp: 23°C (73°F)
Hamilton Island, Whitsundays

Best time to visit Hamilton Island

For the best weather visit Hamilton Island anytime between May and November.

Hamilton Island weather overview

Hamilton Island weather by month

Source: Meteorological data for Hamilton Island is based on weather statistics gathered for the 30-year period 1991 to 2020 by the Bureau of Meteorology (BoM) from the closest weather station: Hamilton Island Airport (HTI), also known as Great Barrier Reef Airport.

Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices. Dew point temperature measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.

Latest update: Hamilton Island weather in September: 12 June, 2024

Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.