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Monthly climate in Dunsborough, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Dunsborough features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 15 °C (59 °F) and 20 °C (69 °F) through the year, but rarely can drop to 10 °C (50 °F) or can rise to as high as 29 °C (84 °F). The average annual precipitation amounts to about 706 mm (27.8 inches) and receives 96 rainy days on the 1 mm (0.04 inches) threshold annually. Dunsborough enjoys an average of 3612 hours of sunshine throughout the year, and daylight varies from 9 hours 56 minutes to 14 hours 19 minutes per day.

Monthly average temperatures in Dunsborough, Australia

The warmest months in Dunsborough are January, February and March, with daily mean temperatures ranging from 20 to 20 °C (68 - 69 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 15 to 16 °C (59 - 61 °F) throughout the day. On average each year, Dunsborough experiences 5 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Dunsborough. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum27°C
(80°F)		26°C
(80°F)		26°C
(79°F)		25°C
(77°F)		22°C
(72°F)		21°C
(70°F)		21°C
(69°F)		19°C
(67°F)		20°C
(69°F)		22°C
(72°F)		24°C
(76°F)		29°C
(84°F)
Mean maximum25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		23°C
(74°F)		22°C
(71°F)		20°C
(68°F)		19°C
(67°F)		19°C
(66°F)		19°C
(67°F)		21°C
(70°F)		22°C
(72°F)		25°C
(78°F)
Average high22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		20°C
(69°F)		19°C
(66°F)		18°C
(64°F)		17°C
(63°F)		16°C
(61°F)		16°C
(62°F)		17°C
(63°F)		19°C
(66°F)		21°C
(70°F)
Daily mean20°C
(68°F)		20°C
(69°F)		20°C
(69°F)		19°C
(66°F)		18°C
(64°F)		17°C
(62°F)		16°C
(61°F)		15°C
(59°F)		15°C
(60°F)		16°C
(61°F)		17°C
(63°F)		19°C
(67°F)
Average low18°C
(65°F)		18°C
(66°F)		19°C
(66°F)		18°C
(64°F)		16°C
(62°F)		16°C
(60°F)		15°C
(59°F)		14°C
(57°F)		14°C
(57°F)		14°C
(58°F)		15°C
(60°F)		17°C
(64°F)
Mean minimum16°C
(60°F)		16°C
(61°F)		16°C
(61°F)		15°C
(59°F)		13°C
(56°F)		13°C
(55°F)		12°C
(54°F)		11°C
(52°F)		11°C
(52°F)		12°C
(54°F)		13°C
(55°F)		14°C
(57°F)
Minimum14°C
(57°F)		15°C
(60°F)		14°C
(58°F)		12°C
(53°F)		12°C
(54°F)		10°C
(50°F)		12°C
(53°F)		10°C
(51°F)		10°C
(50°F)		11°C
(52°F)		12°C
(54°F)		13°C
(56°F)

Compare climate in Dunsborough with other places

Compare temperature, precipitation, sunshine, UV index in Dunsborough, Australia with other places around the world.

Monthly average precipitation in Dunsborough, Australia

Dunsborough usually has the most precipitation in June, July and August, with an average of 16 rainy days and 126 mm (5.0 inches) of precipitation per month. The driest months in Dunsborough are January, November and December. On average, 13 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Dunsborough. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)7 (0.3)37 (1.5)35 (1.4)33 (1.3)83 (3.2)124 (4.9)139 (5.5)116 (4.6)55 (2.2)44 (1.7)20 (0.8)13 (0.5)
Average precipitation days (≥ 1 mm)12451115191411932

Monthly sunshine hours in Dunsborough, Australia

The sunniest months in Dunsborough are October, November and December, when the sun shines an average of 11 hours 20 minutes a day. Least sunny months in Dunsborough: May, June and July receive an average of 8 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Dunsborough. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours307315315280267253261278289321343378
Mean daily daylight hours14h 5m13h 16m12h 15m11h 13m10h 21m9h 56m10h 9m10h 53m11h 52m12h 55m13h 50m14h 19m

Solar UV radiation in Dunsborough, Australia

Dunsborough experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Dunsborough UV Index data.

Average daily maximum UV levels by month for Dunsborough. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141311854458101214