nomadseason

Monthly climate in Foster, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Foster features a oceanic climate (Cfb). Temperatures typically range between 10 °C (51 °F) and 18 °C (66 °F) through the year, but rarely can drop to 5 °C (41 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 904 mm (35.6 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually. Foster enjoys an average of 3092 hours of sunshine throughout the year, and daylight varies from 9 hours 29 minutes to 14 hours 48 minutes per day.

Monthly average temperatures in Foster, Australia

The warmest months in Foster are January, February and March, with daily mean temperatures ranging from 18 to 18 °C (64 - 66 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 10 to 11 °C (51 - 52 °F) throughout the day. On average each year, Foster experiences 13 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 Foster. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(94°F)		32°C
(89°F)		32°C
(91°F)		26°C
(79°F)		21°C
(70°F)		16°C
(61°F)		18°C
(64°F)		18°C
(65°F)		21°C
(70°F)		26°C
(79°F)		32°C
(89°F)		34°C
(94°F)
Mean maximum31°C
(88°F)		27°C
(82°F)		27°C
(81°F)		24°C
(75°F)		19°C
(67°F)		15°C
(59°F)		16°C
(61°F)		17°C
(64°F)		20°C
(68°F)		23°C
(74°F)		26°C
(79°F)		29°C
(85°F)
Average high21°C
(70°F)		20°C
(69°F)		20°C
(69°F)		18°C
(64°F)		15°C
(59°F)		13°C
(55°F)		12°C
(54°F)		12°C
(54°F)		14°C
(57°F)		16°C
(60°F)		18°C
(64°F)		19°C
(67°F)
Daily mean18°C
(66°F)		18°C
(64°F)		18°C
(64°F)		15°C
(60°F)		13°C
(55°F)		11°C
(52°F)		10°C
(51°F)		10°C
(51°F)		11°C
(53°F)		13°C
(56°F)		15°C
(59°F)		16°C
(62°F)
Average low16°C
(61°F)		16°C
(60°F)		15°C
(60°F)		13°C
(56°F)		11°C
(52°F)		9°C
(49°F)		9°C
(48°F)		9°C
(48°F)		9°C
(49°F)		11°C
(52°F)		13°C
(55°F)		14°C
(58°F)
Mean minimum13°C
(56°F)		12°C
(54°F)		12°C
(53°F)		10°C
(50°F)		8°C
(46°F)		6°C
(44°F)		6°C
(43°F)		6°C
(43°F)		6°C
(44°F)		8°C
(47°F)		9°C
(48°F)		11°C
(53°F)
Minimum11°C
(52°F)		10°C
(51°F)		10°C
(51°F)		9°C
(48°F)		7°C
(45°F)		5°C
(42°F)		6°C
(42°F)		5°C
(41°F)		5°C
(41°F)		7°C
(45°F)		8°C
(46°F)		10°C
(49°F)

Compare climate in Foster with other places

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

Monthly average precipitation in Foster, Australia

Foster usually has the most precipitation in May, August and September, with an average of 15 rainy days and 101 mm (4.0 inches) of precipitation per month. The driest months in Foster are January, February and June. On average, 52 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Foster. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)42 (1.7)53 (2.1)62 (2.4)69 (2.7)91 (3.6)61 (2.4)79 (3.1)113 (4.4)98 (3.9)82 (3.2)74 (2.9)79 (3.1)
Average precipitation days (≥ 1 mm)5789121115191414119

Monthly sunshine hours in Foster, Australia

The sunniest months in Foster are October, November and December, when the sun shines an average of 9 hours 59 minutes a day. Least sunny months in Foster: May, June and July receive an average of 6 hours 45 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Foster. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours275279276223212195213237258287305327
Mean daily daylight hours14h 30m13h 31m12h 17m11h 2m10h 0m9h 29m9h 44m10h 39m11h 50m13h 5m14h 12m14h 48m

Solar UV radiation in Foster, Australia

Foster experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 12 - 13, 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 Foster UV Index data.

Average daily maximum UV levels by month for Foster. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)13121074334791113