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Monthly climate in Portland, Victoria, Australia

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Portland features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 11 °C (52 °F) and 18 °C (64 °F) through the year, but rarely can drop to 5 °C (41 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 829 mm (32.6 inches) and receives 132 rainy days on the 1 mm (0.04 inches) threshold annually.Portland enjoys an average of 3148 hours of sunshine throughout the year, and daylight varies from 9 hours 31 minutes to 14 hours 46 minutes per day.

Monthly average temperatures in Portland, Victoria, Australia §

The warmest months in Portland are January, February and March, with daily mean temperatures ranging from 17 to 18 °C (63 - 64 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 11 to 11 °C (52 - 53 °F) throughout the day. On average each year, Portland experiences 15 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 Portland, Victoria, Australia.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 35°C
(95°F)		 31°C
(88°F)		 35°C
(94°F)		 28°C
(82°F)		 21°C
(70°F)		 17°C
(64°F)		 17°C
(63°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(81°F)		 29°C
(85°F)		 36°C
(97°F)
Mean maximum 32°C
(90°F)		 29°C
(84°F)		 28°C
(83°F)		 25°C
(77°F)		 20°C
(68°F)		 16°C
(60°F)		 16°C
(61°F)		 17°C
(63°F)		 21°C
(70°F)		 24°C
(75°F)		 27°C
(81°F)		 30°C
(86°F)
Average high 21°C
(70°F)		 20°C
(68°F)		 20°C
(68°F)		 18°C
(64°F)		 15°C
(60°F)		 13°C
(56°F)		 13°C
(55°F)		 13°C
(56°F)		 14°C
(58°F)		 16°C
(60°F)		 18°C
(64°F)		 19°C
(66°F)
Daily mean 18°C
(64°F)		 17°C
(63°F)		 17°C
(63°F)		 15°C
(60°F)		 13°C
(56°F)		 11°C
(53°F)		 11°C
(52°F)		 11°C
(52°F)		 12°C
(54°F)		 13°C
(56°F)		 15°C
(59°F)		 16°C
(61°F)
Average low 15°C
(59°F)		 15°C
(59°F)		 15°C
(59°F)		 13°C
(56°F)		 11°C
(52°F)		 10°C
(50°F)		 9°C
(49°F)		 9°C
(48°F)		 9°C
(49°F)		 11°C
(51°F)		 12°C
(54°F)		 13°C
(56°F)
Mean minimum 13°C
(55°F)		 12°C
(54°F)		 11°C
(52°F)		 10°C
(50°F)		 8°C
(46°F)		 7°C
(44°F)		 6°C
(43°F)		 6°C
(43°F)		 6°C
(44°F)		 8°C
(46°F)		 9°C
(48°F)		 10°C
(50°F)
Minimum 12°C
(53°F)		 11°C
(52°F)		 9°C
(49°F)		 9°C
(49°F)		 6°C
(44°F)		 5°C
(41°F)		 5°C
(42°F)		 6°C
(42°F)		 6°C
(42°F)		 6°C
(44°F)		 8°C
(46°F)		 9°C
(48°F)

Compare climate in Portland with other places

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

Monthly average precipitation in Portland, Victoria, Australia §

Portland usually has the most precipitation in May, July and August, with an average of 17 rainy days and 109 mm (4.3 inches) of precipitation per month.The driest months in Portland are January, February and March. On average, 33 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Portland, Victoria, Australia.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 32 (1.3) 31 (1.2) 35 (1.4) 51 (2.0) 92 (3.6) 81 (3.2) 122 (4.8) 113 (4.4) 86 (3.4) 74 (2.9) 68 (2.7) 44 (1.7)
Average precipitation days (≥ 1 mm) 4 7 8 9 16 13 17 18 13 11 10 6

Monthly sunshine hours in Portland, Victoria, Australia §

The sunniest months in Portland are March, November and December, when the sun shines an average of 10 hours 15 minutes a day.Least sunny months in Portland: May, June and July receive an average of 6 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Portland, Victoria, Australia.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 284 286 289 236 205 195 213 240 256 285 310 343
Mean daily daylight hours 14h 28m 13h 30m 12h 17m 11h 3m 10h 1m 9h 31m 9h 46m 10h 40m 11h 50m 13h 4m 14h 11m 14h 46m

Solar UV radiation in Portland, Victoria, Australia §

Portland experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 12 - 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 4. For more detailed information, check out our hourly Portland UV Index data.

Average daily maximum UV levels by month for Portland, Victoria, Australia.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 13 12 10 7 4 3 3 4 7 9 11 14