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Monthly climate in Port Denison, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Port Denison features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 15 °C (59 °F) and 26 °C (79 °F) through the year, but rarely can drop to 5 °C (41 °F) or can rise to as high as 45 °C (112 °F). The average annual precipitation amounts to about 299 mm (11.8 inches) and receives 40 rainy days on the 1 mm (0.04 inches) threshold annually. Port Denison enjoys an average of 3721 hours of sunshine throughout the year, and daylight varies from 10 hours 17 minutes to 13 hours 58 minutes per day.

Monthly average temperatures in Port Denison, Australia

The warmest months in Port Denison are January, February and March, with daily mean temperatures ranging from 25 to 26 °C (78 - 79 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 15 to 16 °C (59 - 60 °F) throughout the day. On average each year, Port Denison experiences 181 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 Port Denison. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum43°C
(109°F)		43°C
(110°F)		40°C
(105°F)		38°C
(101°F)		33°C
(92°F)		29°C
(85°F)		25°C
(78°F)		31°C
(87°F)		33°C
(92°F)		38°C
(100°F)		39°C
(103°F)		45°C
(112°F)
Mean maximum41°C
(107°F)		41°C
(105°F)		39°C
(102°F)		37°C
(98°F)		31°C
(87°F)		25°C
(78°F)		24°C
(75°F)		26°C
(80°F)		31°C
(88°F)		35°C
(95°F)		38°C
(100°F)		41°C
(107°F)
Average high33°C
(92°F)		33°C
(91°F)		32°C
(89°F)		28°C
(83°F)		24°C
(76°F)		21°C
(70°F)		19°C
(67°F)		19°C
(67°F)		22°C
(72°F)		25°C
(77°F)		28°C
(83°F)		32°C
(89°F)
Daily mean26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		22°C
(72°F)		18°C
(65°F)		16°C
(60°F)		15°C
(59°F)		15°C
(59°F)		16°C
(62°F)		19°C
(66°F)		22°C
(71°F)		25°C
(77°F)
Average low20°C
(68°F)		21°C
(70°F)		20°C
(69°F)		17°C
(63°F)		14°C
(57°F)		12°C
(54°F)		11°C
(53°F)		11°C
(52°F)		12°C
(53°F)		14°C
(57°F)		16°C
(61°F)		19°C
(66°F)
Mean minimum15°C
(59°F)		15°C
(60°F)		14°C
(58°F)		12°C
(54°F)		9°C
(48°F)		8°C
(47°F)		8°C
(46°F)		7°C
(44°F)		7°C
(45°F)		9°C
(49°F)		11°C
(52°F)		13°C
(56°F)
Minimum13°C
(56°F)		14°C
(58°F)		13°C
(55°F)		10°C
(50°F)		5°C
(41°F)		6°C
(44°F)		7°C
(45°F)		5°C
(42°F)		6°C
(43°F)		7°C
(45°F)		10°C
(50°F)		11°C
(52°F)

Compare climate in Port Denison with other places

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

Monthly average precipitation in Port Denison, Australia

Port Denison usually has the most precipitation in June, July and August, with an average of 6 rainy days and 52 mm (2.0 inches) of precipitation per month. The driest months in Port Denison are March, April and December. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Denison. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)18 (0.7)34 (1.3)7 (0.3)12 (0.5)24 (0.9)52 (2.0)52 (2.1)50 (2.0)14 (0.5)18 (0.7)13 (0.5)6 (0.2)
Average precipitation days (≥ 1 mm)131146774321

Monthly sunshine hours in Port Denison, Australia

The sunniest months in Port Denison are October, November and December, when the sun shines an average of 11 hours 30 minutes a day. Least sunny months in Port Denison: May, June and July receive an average of 9 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Denison. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours301311320293285269281294303336347375
Mean daily daylight hours13h 45m13h 5m12h 13m11h 21m10h 38m10h 17m10h 27m11h 5m11h 54m12h 47m13h 34m13h 58m

Solar UV radiation in Port Denison, Australia

Port Denison experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Port Denison UV Index data.

Average daily maximum UV levels by month for Port Denison. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)1514121075579121414