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Monthly climate in Horsham, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Horsham features a oceanic climate (Cfb). Temperatures typically range between 8 °C (47 °F) and 23 °C (73 °F) through the year, but rarely can drop to -2 °C (28 °F) or can rise to as high as 46 °C (115 °F). The average annual precipitation amounts to about 437 mm (17.2 inches) and receives 74 rainy days on the 1 mm (0.04 inches) threshold annually. Horsham enjoys an average of 3167 hours of sunshine throughout the year, and daylight varies from 9 hours 40 minutes to 14 hours 36 minutes per day.

Monthly average temperatures in Horsham, Australia

The warmest months in Horsham are January, February and December, with daily mean temperatures ranging from 20 to 23 °C (68 - 73 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 8 to 9 °C (47 - 48 °F) throughout the day. On average each year, Horsham experiences 100 days above 25 °C (77.0 °F) and 7 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Horsham. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum44°C
(111°F)		41°C
(107°F)		38°C
(101°F)		35°C
(95°F)		25°C
(77°F)		19°C
(67°F)		18°C
(65°F)		20°C
(68°F)		28°C
(82°F)		34°C
(94°F)		38°C
(101°F)		46°C
(115°F)
Mean maximum41°C
(106°F)		39°C
(102°F)		34°C
(94°F)		31°C
(88°F)		22°C
(72°F)		16°C
(61°F)		18°C
(64°F)		19°C
(66°F)		25°C
(78°F)		31°C
(87°F)		35°C
(96°F)		39°C
(103°F)
Average high31°C
(87°F)		28°C
(83°F)		26°C
(79°F)		21°C
(71°F)		16°C
(62°F)		14°C
(57°F)		13°C
(56°F)		14°C
(57°F)		16°C
(62°F)		20°C
(68°F)		24°C
(75°F)		27°C
(82°F)
Daily mean23°C
(73°F)		21°C
(70°F)		19°C
(67°F)		15°C
(60°F)		11°C
(53°F)		9°C
(48°F)		8°C
(47°F)		9°C
(48°F)		11°C
(52°F)		14°C
(57°F)		17°C
(63°F)		20°C
(68°F)
Average low15°C
(59°F)		14°C
(57°F)		13°C
(55°F)		10°C
(50°F)		7°C
(45°F)		5°C
(41°F)		5°C
(40°F)		4°C
(40°F)		5°C
(42°F)		8°C
(46°F)		10°C
(51°F)		12°C
(54°F)
Mean minimum9°C
(48°F)		8°C
(46°F)		6°C
(44°F)		4°C
(40°F)		1°C
(35°F)		-0°C
(32°F)		-0°C
(32°F)		-1°C
(31°F)		-1°C
(31°F)		2°C
(36°F)		3°C
(38°F)		7°C
(44°F)
Minimum8°C
(46°F)		6°C
(43°F)		5°C
(42°F)		2°C
(35°F)		-0°C
(32°F)		-2°C
(30°F)		-1°C
(30°F)		-2°C
(28°F)		-1°C
(30°F)		1°C
(34°F)		1°C
(34°F)		6°C
(43°F)

Compare climate in Horsham with other places

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

Monthly average precipitation in Horsham, Australia

Horsham usually has the most precipitation in May, August and October, with an average of 8 rainy days and 49 mm (1.9 inches) of precipitation per month. The driest months in Horsham are January, February and March. On average, 21 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Horsham. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)23 (0.9)14 (0.6)26 (1.0)32 (1.2)50 (2.0)37 (1.5)44 (1.7)50 (2.0)35 (1.4)48 (1.9)44 (1.7)33 (1.3)
Average precipitation days (≥ 1 mm)3245779109864

Monthly sunshine hours in Horsham, Australia

The sunniest months in Horsham are February, November and December, when the sun shines an average of 10 hours 36 minutes a day. Least sunny months in Horsham: May, June and July receive an average of 6 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Horsham. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours294302299236213201210223255276302350
Mean daily daylight hours14h 20m13h 25m12h 16m11h 7m10h 9m9h 40m9h 54m10h 45m11h 51m13h 1m14h 3m14h 36m

Solar UV radiation in Horsham, Australia

Horsham experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 13 - 15, 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 Horsham UV Index data.

Average daily maximum UV levels by month for Horsham. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141311753357101215