Best time to visit Hamilton Island

The best time to visit Hamilton Island is from June to mid-November during the dry season.

For hot-weather activities on the beach or poolside, the best times to visit Hamilton Island are from late-March to early-May; and from late-September to mid-December.

Hamilton Island weather

Hamilton Island experiences a hot tropical climate of wet summers and warm dry winters, with a mild spring (September through November) and autumn (March to May).

The driest months are from August to October.

The wet 'green' season from January to March is generally hot, wet and humid. You can expect tropical rain showers from December through May, with January to March the wettest months.

Which is the hottest month in Hamilton Island?
The hottest time of year in Hamilton Island is normally January. Expect maximum daytime temperatures to top 30°C (86°F) with high heat and humidity.

Which month has the most rain in Hamilton Island?
January to March are normally the wettest months in Hamilton Island with an average of 13 days each month with some rainfall.

You can expect tropical rain showers from December through May.

When is it sunniest in Hamilton Island?
The sunniest time of year in Hamilton Island is normally October with 10 hours of bright sunshine per day – that's around 83% of daylight hours.

When is the sea warmest in Hamilton Island?
The sea is usually at its warmest in Hamilton Island in January, February and March when the seawater temperature reaches 28°C (82°F).

You can swim year round in the Whitsundays; seawater temperatures average 23°C (73°F) in winter.

What are the windiest months in Hamilton Island?
March to May are the windiest months. The predominant wind direction in the Whitsundays is from the east.

The Whitsunday Islands are influenced by the South Pacific trade winds and consequently enjoy predominantly south-east and east winds.

However, north-east winds occur with increasing frequency from September through to January.

When is the best time for sailing in Hamilton Island?
While you can sail year-round from Hamilton Island, the sailing season is at it’s best between April and October when cooling southeast trades blow consistently between 27km/h (15 knots) and 46km/h (25 knots).

Seasonal trade winds blow from May to August, however you can expect sailing breezes virtually every day.

August to November is considered the most settled time of year for sailing in the Whitsundays.

During the months of November through January, it’s normal to get wind from the northeast direction.

Is there a risk of a tropical storm in Hamilton Island?
The risk of a tropical storm in Hamilton Island is greatest between January and March. The region is prone to tropical cyclones, which usually form between November and May.

Queensland has an excellent cyclone warning system that provides plenty of advance notice of an impending cyclone.

Hamilton Island – Monthly Weather

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average daily max temp (°C)
30 30 29 27 25 22 21 23 25 27 29 30
Average daily min temp (°C)
25 25 24 22 21 19 18 18 20 22 23 24
Average daily sunshine (hrs)
9 7 7 7 7 7 7 9 9 10 9 9
Comfort level
High heat & humidity icon High heat & humidity icon Moderately hot icon Moderately hot icon Low heat & humidity icon Low heat & humidity icon Low heat & humidity icon Low heat & humidity icon Low heat & humidity icon Moderately hot icon Moderately hot icon High heat & humidity icon
Average relative humidity (%)
79 83 82 81 83 82 79 79 74 74 76 78
Average UV Index
11+ 11+ 11+ 10 7 6 6 8 10 11+ 11+ 11+
Days with some rainfall
13 14 14 11 11 7 5 3 2 3 5 7
Average rainfall (mm)
262 260 185 158 94 34 25 13 9 13 25 93
Average wind speed (km/h)
23 24 26 26 25 24 22 23 23 23 23 24
Average daily sea temp (°C)
28 28 28 26 25 23 22 22 23 25 26 28
Hamilton Island, Queensland

Holiday seasons

High season: Typically, school and public holidays from late December to the end of January, Easter, from late June to early July and from late September to early October. Winter, from June through August, is also popular.

Low season: Any time outside the main school and public holiday periods.

Note: The waters of tropical Queensland are home to marine stingers and jellyfish. The high risk season is from October to May. Most accredited Whitsunday tour operators offer protective ‘stinger suits’ to all customers at little or no cost.

If you do get stung do not rub the sting area instead, apply vinegar immediately and seek medical attention urgently. Dial 000 for an ambulance.

Hamilton Island – Monthly Review

January February March April
May June July August
September October November December

Note: Monthly weather averages – meteorological data is sourced from the Bureau of Meteorology in Australia with additional historical climate data sourced from the World Meteorological Organization (WMO).

More about Hamilton Island…

More about the Whitsundays…

Latest update: Best time to visit Hamilton Island: 13 May, 2022