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Monthly climate in Carterton, New Zealand

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Carterton features a oceanic climate (Cfb). Temperatures typically range between 7 °C (46 °F) and 17 °C (62 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 27 °C (80 °F). The average annual precipitation amounts to about 1143 mm (45.0 inches) and receives 148 rainy days on the 1 mm (0.04 inches) threshold annually. Carterton enjoys an average of 2998 hours of sunshine throughout the year, and daylight varies from 9 hours 15 minutes to 15 hours 3 minutes per day.

Monthly average temperatures in Carterton, New Zealand

The warmest months in Carterton are January, February and December, with daily mean temperatures ranging from 15 to 17 °C (60 - 62 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 7 to 8 °C (46 - 47 °F) throughout the day. On average each year, Carterton experiences 1 days above 25 °C (77.0 °F) and 6 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Carterton. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum26°C
(80°F)		27°C
(80°F)		24°C
(75°F)		23°C
(74°F)		19°C
(66°F)		17°C
(62°F)		15°C
(58°F)		15°C
(60°F)		18°C
(64°F)		19°C
(67°F)		22°C
(72°F)		25°C
(78°F)
Mean maximum25°C
(77°F)		25°C
(77°F)		23°C
(74°F)		21°C
(69°F)		18°C
(65°F)		15°C
(59°F)		14°C
(58°F)		14°C
(58°F)		16°C
(62°F)		19°C
(66°F)		21°C
(71°F)		22°C
(73°F)
Average high21°C
(69°F)		21°C
(69°F)		19°C
(66°F)		16°C
(62°F)		14°C
(58°F)		12°C
(53°F)		11°C
(52°F)		12°C
(53°F)		12°C
(55°F)		15°C
(58°F)		17°C
(62°F)		19°C
(66°F)
Daily mean17°C
(62°F)		16°C
(62°F)		15°C
(59°F)		12°C
(55°F)		10°C
(51°F)		8°C
(47°F)		7°C
(46°F)		8°C
(47°F)		9°C
(49°F)		11°C
(52°F)		13°C
(56°F)		15°C
(60°F)
Average low13°C
(55°F)		12°C
(54°F)		11°C
(52°F)		9°C
(48°F)		7°C
(45°F)		5°C
(42°F)		4°C
(39°F)		4°C
(40°F)		5°C
(42°F)		7°C
(45°F)		10°C
(49°F)		12°C
(53°F)
Mean minimum7°C
(46°F)		6°C
(43°F)		5°C
(41°F)		2°C
(37°F)		1°C
(34°F)		2°C
(36°F)		-2°C
(29°F)		-1°C
(31°F)		0°C
(32°F)		1°C
(33°F)		5°C
(42°F)		7°C
(44°F)
Minimum5°C
(41°F)		3°C
(38°F)		3°C
(38°F)		1°C
(33°F)		-2°C
(29°F)		-2°C
(29°F)		-4°C
(25°F)		-2°C
(28°F)		-1°C
(31°F)		-1°C
(30°F)		4°C
(40°F)		3°C
(38°F)

Compare climate in Carterton with other places

Compare temperature, precipitation, sunshine, UV index in Carterton, New Zealand with other places around the world.

Monthly average precipitation in Carterton, New Zealand

Carterton usually has the most precipitation in September, November and December, with an average of 15 rainy days and 122 mm (4.8 inches) of precipitation per month. The driest months in Carterton are January, February and May. On average, 66 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Carterton. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)62 (2.4)68 (2.7)84 (3.3)110 (4.3)69 (2.7)101 (4.0)98 (3.9)90 (3.6)113 (4.5)95 (3.7)110 (4.3)143 (5.6)
Average precipitation days (≥ 1 mm)10810121013131415131416

Monthly sunshine hours in Carterton, New Zealand

The sunniest months in Carterton are February, November and December, when the sun shines an average of 10 hours 9 minutes a day. Least sunny months in Carterton: May, June and July receive an average of 6 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Carterton. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours279286266230203163190224244279302325
Mean daily daylight hours14h 43m13h 39m12h 19m10h 57m9h 49m9h 15m9h 32m10h 31m11h 48m13h 10m14h 24m15h 3m

Solar UV radiation in Carterton, New Zealand

Carterton experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure. May, June and July are in the Low / 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 Carterton UV Index data.

Average daily maximum UV levels by month for Carterton. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)1313974224691113