All Countries
Weather & Climate in Wellesley Islands, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Wellesley Islands has a warm climate with an average annual temperature of 80°F (26°C). Winters average 84°F in January while summers reach 70°F in July / relatively mild seasonal variation. The area gets 256 sunny days per year, above the national average. Annual precipitation totals 44.3 inches. The city sits at an elevation of 33 feet.
Temperature
84°F Jan (29°C)
70°F Jul (21°C)
| Annual Average | 79.5°F |
| 47% above US avg | |
| January Average | 84°F (29°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 256 days/yr |
Geography
| Elevation | 33 ft (10 m) |
| Area | 386.9 sq mi (1,002.0 km²) |
| Population Density | 3/sq mi |
| Coordinates | -16.6318°N, 139.4014°W |
| Timezone | Australia/Brisbane |
Precipitation & Snow
Air Quality
Hurricane History
8 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Megan | Category 2 | 104 mph | 271 km |
| 2019 | Trevor | Category 3 | 115 mph | 172 km |
| 2019 | Owen | Category 1 | 92 mph | 173 km |
| 2018 | Nora | Category 1 | 86 mph | 272 km |
| 1996 | Barry | Category 1 | 115 mph | 161 km |
| 1985 | Sandy | Category 4 | 121 mph | 188 km |
| 1984 | Kathy | Category 4 | 138 mph | 249 km |
| 1982 | Dominic | Category 1 | 132 mph | 292 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
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").