Wellesley Islands, Australia
Queensland · Australia
Wellesley Islands is a small town in Queensland, Australia with a population of 1,022. Elevation: 33 ft (10 m). Average temperature: 80°F (26°C).
Population source: Wikidata (dated census and official estimates), GeoNames. Climate: WorldClim 2.1 normals (1970-2000), NASA POWER. Updated August 2026
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About Wellesley Islands
The Wellesley Islands, also known as the North Wellesley Islands, is a group of islands off the coast of Far North Queensland, Australia, in the Gulf of Carpentaria. It is a locality within the Shire of Mornington local government area. The traditional owners of the islands are the Lardil people. In the 2021 census, Wellesley Islands had a population of 1,022 people.
People
Climate
| Population | 1,022 |
| Population Density | 3 / sq mi |
| Elevation | 33 ft (10 m) |
| Coordinates | -16.6318°, 139.4014° |
| Timezone | Australia/Brisbane |
| Country | 🇦🇺 Australia |
| State / Province | Queensland |
| Average Temperature | 80°F (26°C) |
| January Average | 84°F (29°C) |
| July Average | 70°F (21°C) |
| Annual Precipitation | 44.3 inches (1,126 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
About Wellesley Islands
Wellesley Islands is a small town in Australia (Queensland) with a population of 1,022. The city sits at an elevation of 33 feet (10 meters) above sea level. The average annual temperature is 80°F (26°C). Temperatures range from 84°F in January to 70°F in July. Annual precipitation averages 44.3 inches. The timezone is Australia/Brisbane.
Climate in Wellesley Islands
Wellesley Islands has an average annual temperature of 26.7°C (80°F). The hottest month is Dec (29.9°C), the coldest is Jul (21.6°C). Average annual precipitation is 0 mm.
Temperature
| Annual Average | 79.5°F |
| 47% above Australia avg | |
| January Average | 84°F (29°C) |
| July Average | 70°F (21°C) |
Geography
| Elevation | 33 ft (10 m) |
| Area | 386.9 sq mi (1,002.0 km²) |
| Population Density | 3/sq mi |
| Coordinates | 16.6318°S, 139.4014°E |
| Timezone | Australia/Brisbane |
Precipitation & Snow
Air Quality
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 84°F (29°C) | 11.8 in | Wettest |
| February | 83°F (29°C) | 11.3 in | |
| March | 83°F (28°C) | 9.7 in | |
| April | 81°F (27°C) | 1.6 in | |
| May | 77°F (25°C) | 0.3 in | |
| June | 72°F (22°C) | 0.3 in | |
| July | 70°F (21°C) | 0.1 in | Coldest |
| August | 72°F (22°C) | 0.0 in | Driest |
| September | 78°F (25°C) | 0.2 in | |
| October | 83°F (28°C) | 0.5 in | |
| November | 85°F (30°C) | 2.5 in | |
| December | 86°F (30°C) | 6.1 in | Warmest |
Wellesley Islands has a seasonal temperature swing of 16°F / from 70°F in July to 86°F in December. Total annual precipitation is 44.3 inches, with January being the wettest month (11.8") and August the driest (0.0").
Airports Near Wellesley Islands
3 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Bentinck Island Airport | - | Small Airport |
| Mornington Island Airport | ONG | Small Airport |
| Sweers Island Resort Airport | - | Small Airport |
Quick Facts
🇦🇺 About Australia
Public Holidays in Australia
25 public holidays this year
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Get ReportFrequently Asked Questions About Wellesley Islands
What is the population of Wellesley Islands?
Wellesley Islands has a population of 1,022 residents and is located in Australia. The population density is 3 people per square mile, spread across 386.9 square miles.
What is the weather like in Wellesley Islands?
Wellesley Islands has a warm climate with an average annual temperature of 80°F (26°C). Winter temperatures average 84°F in January, while summers reach an average of 70°F in July. Annual rainfall totals 44.3 inches.
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