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Monthly climate in Gunnedah, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Gunnedah features a humid subtropical climate (Cfa). Temperatures typically range between 10 °C (50 °F) and 27 °C (81 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 44 °C (112 °F). The average annual precipitation amounts to about 529 mm (20.8 inches) and receives 59 rainy days on the 1 mm (0.04 inches) threshold annually. Gunnedah enjoys an average of 3490 hours of sunshine throughout the year, and daylight varies from 10 hours 8 minutes to 14 hours 6 minutes per day.

Monthly average temperatures in Gunnedah, Australia

The warmest months in Gunnedah are January, February and December, with daily mean temperatures ranging from 25 to 27 °C (77 - 81 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 10 to 11 °C (50 - 52 °F) throughout the day. On average each year, Gunnedah experiences 165 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Gunnedah. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum42°C
(107°F)		44°C
(112°F)		38°C
(100°F)		33°C
(91°F)		26°C
(79°F)		22°C
(73°F)		24°C
(76°F)		26°C
(79°F)		33°C
(92°F)		36°C
(98°F)		39°C
(102°F)		42°C
(108°F)
Mean maximum39°C
(102°F)		38°C
(101°F)		34°C
(93°F)		29°C
(84°F)		25°C
(77°F)		20°C
(69°F)		22°C
(72°F)		25°C
(76°F)		30°C
(86°F)		33°C
(92°F)		35°C
(95°F)		39°C
(102°F)
Average high34°C
(93°F)		32°C
(89°F)		28°C
(84°F)		25°C
(77°F)		20°C
(69°F)		17°C
(63°F)		17°C
(64°F)		19°C
(66°F)		23°C
(74°F)		26°C
(79°F)		28°C
(83°F)		32°C
(89°F)
Daily mean27°C
(81°F)		25°C
(77°F)		22°C
(72°F)		18°C
(64°F)		13°C
(56°F)		10°C
(51°F)		10°C
(50°F)		11°C
(52°F)		15°C
(59°F)		19°C
(66°F)		21°C
(71°F)		25°C
(77°F)
Average low21°C
(69°F)		19°C
(66°F)		17°C
(62°F)		12°C
(53°F)		8°C
(46°F)		5°C
(42°F)		4°C
(39°F)		4°C
(39°F)		7°C
(45°F)		12°C
(54°F)		15°C
(58°F)		18°C
(64°F)
Mean minimum16°C
(60°F)		14°C
(57°F)		12°C
(53°F)		6°C
(43°F)		2°C
(36°F)		1°C
(34°F)		-2°C
(29°F)		-0°C
(31°F)		2°C
(36°F)		6°C
(44°F)		8°C
(47°F)		11°C
(52°F)
Minimum11°C
(52°F)		12°C
(54°F)		11°C
(52°F)		2°C
(35°F)		0°C
(32°F)		-2°C
(28°F)		-3°C
(26°F)		-2°C
(29°F)		1°C
(34°F)		4°C
(40°F)		7°C
(44°F)		9°C
(49°F)

Compare climate in Gunnedah with other places

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

Monthly average precipitation in Gunnedah, Australia

Gunnedah usually has the most precipitation in March, November and December, with an average of 7 rainy days and 79 mm (3.1 inches) of precipitation per month. The driest months in Gunnedah are April, August and September. On average, 20 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Gunnedah. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)30 (1.2)55 (2.2)102 (4.0)16 (0.6)24 (0.9)31 (1.2)27 (1.1)24 (0.9)21 (0.8)64 (2.5)69 (2.7)64 (2.5)
Average precipitation days (≥ 1 mm)458234434778

Monthly sunshine hours in Gunnedah, Australia

The sunniest months in Gunnedah are October, November and December, when the sun shines an average of 10 hours 49 minutes a day. Least sunny months in Gunnedah: May, June and July receive an average of 7 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Gunnedah. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours294302301283257225252283296314328352
Mean daily daylight hours13h 53m13h 10m12h 14m11h 18m10h 31m10h 8m10h 20m11h 0m11h 53m12h 50m13h 40m14h 6m

Solar UV radiation in Gunnedah, Australia

Gunnedah experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 15 - 16, 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 Gunnedah UV Index data.

Average daily maximum UV levels by month for Gunnedah. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)161513974479111415