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Monthly climate in Geraldton, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Geraldton features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 16 °C (62 °F) and 24 °C (76 °F) through the year, but rarely can drop to 10 °C (51 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 294 mm (11.6 inches) and receives 45 rainy days on the 1 mm (0.04 inches) threshold annually. Geraldton enjoys an average of 3724 hours of sunshine throughout the year, and daylight varies from 10 hours 19 minutes to 13 hours 55 minutes per day.

Monthly average temperatures in Geraldton, Australia

The warmest months in Geraldton are January, February and March, with daily mean temperatures ranging from 24 to 24 °C (75 - 76 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 16 to 17 °C (62 - 63 °F) throughout the day. On average each year, Geraldton experiences 96 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 Geraldton. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum37°C
(98°F)		37°C
(99°F)		34°C
(93°F)		34°C
(94°F)		28°C
(83°F)		26°C
(80°F)		24°C
(76°F)		26°C
(78°F)		28°C
(83°F)		31°C
(88°F)		33°C
(92°F)		37°C
(98°F)
Mean maximum34°C
(93°F)		34°C
(93°F)		32°C
(91°F)		31°C
(89°F)		27°C
(81°F)		23°C
(75°F)		23°C
(73°F)		23°C
(74°F)		26°C
(80°F)		28°C
(83°F)		30°C
(87°F)		34°C
(94°F)
Average high26°C
(80°F)		27°C
(80°F)		27°C
(80°F)		25°C
(77°F)		23°C
(73°F)		21°C
(69°F)		19°C
(67°F)		19°C
(66°F)		20°C
(68°F)		21°C
(70°F)		23°C
(73°F)		25°C
(78°F)
Daily mean24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		22°C
(72°F)		20°C
(68°F)		18°C
(64°F)		17°C
(62°F)		16°C
(62°F)		17°C
(63°F)		19°C
(66°F)		20°C
(69°F)		23°C
(73°F)
Average low21°C
(71°F)		22°C
(72°F)		22°C
(72°F)		20°C
(68°F)		17°C
(63°F)		15°C
(60°F)		15°C
(59°F)		14°C
(58°F)		15°C
(59°F)		16°C
(62°F)		18°C
(65°F)		20°C
(69°F)
Mean minimum18°C
(65°F)		19°C
(66°F)		18°C
(65°F)		16°C
(62°F)		13°C
(56°F)		12°C
(54°F)		12°C
(53°F)		11°C
(52°F)		12°C
(54°F)		13°C
(56°F)		15°C
(59°F)		17°C
(62°F)
Minimum17°C
(63°F)		18°C
(64°F)		17°C
(62°F)		14°C
(58°F)		11°C
(52°F)		11°C
(52°F)		11°C
(52°F)		10°C
(51°F)		11°C
(52°F)		12°C
(54°F)		13°C
(57°F)		15°C
(58°F)

Compare climate in Geraldton with other places

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

Monthly average precipitation in Geraldton, Australia

Geraldton usually has the most precipitation in June, July and August, with an average of 8 rainy days and 55 mm (2.2 inches) of precipitation per month. The driest months in Geraldton are March, April and December. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Geraldton. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)11 (0.4)22 (0.9)3 (0.1)11 (0.4)26 (1.0)58 (2.3)58 (2.3)50 (2.0)17 (0.7)18 (0.7)14 (0.6)5 (0.2)
Average precipitation days (≥ 1 mm)130147994421

Monthly sunshine hours in Geraldton, Australia

The sunniest months in Geraldton are October, November and December, when the sun shines an average of 11 hours 30 minutes a day. Least sunny months in Geraldton: May, June and July receive an average of 9 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Geraldton. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours299311320292286272282295303336346374
Mean daily daylight hours13h 43m13h 4m12h 13m11h 22m10h 40m10h 19m10h 29m11h 6m11h 54m12h 46m13h 32m13h 55m

Solar UV radiation in Geraldton, Australia

Geraldton 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 Geraldton UV Index data.

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