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Monthly climate in Kaiapoi, New Zealand

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kaiapoi features a oceanic climate (Cfb). Temperatures typically range between 8 °C (47 °F) and 17 °C (63 °F) through the year, but rarely can drop to 1 °C (35 °F) or can rise to as high as 28 °C (83 °F). The average annual precipitation amounts to about 695 mm (27.3 inches) and receives 100 rainy days on the 1 mm (0.04 inches) threshold annually. Kaiapoi enjoys an average of 3046 hours of sunshine throughout the year, and daylight varies from 8 hours 58 minutes to 15 hours 21 minutes per day.

Monthly average temperatures in Kaiapoi, New Zealand

The warmest months in Kaiapoi are January, February and December, with daily mean temperatures ranging from 16 to 17 °C (61 - 63 °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, Kaiapoi experiences 3 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 Kaiapoi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(82°F)		28°C
(83°F)		25°C
(77°F)		23°C
(74°F)		20°C
(69°F)		18°C
(64°F)		15°C
(59°F)		16°C
(62°F)		18°C
(65°F)		22°C
(72°F)		23°C
(74°F)		26°C
(78°F)
Mean maximum26°C
(78°F)		26°C
(79°F)		24°C
(75°F)		21°C
(70°F)		18°C
(65°F)		15°C
(59°F)		14°C
(57°F)		15°C
(59°F)		18°C
(64°F)		20°C
(68°F)		22°C
(71°F)		23°C
(74°F)
Average high20°C
(68°F)		20°C
(68°F)		18°C
(65°F)		16°C
(61°F)		14°C
(57°F)		11°C
(52°F)		10°C
(51°F)		11°C
(52°F)		13°C
(55°F)		14°C
(58°F)		16°C
(62°F)		18°C
(65°F)
Daily mean17°C
(63°F)		17°C
(63°F)		16°C
(60°F)		13°C
(56°F)		11°C
(52°F)		9°C
(48°F)		8°C
(47°F)		9°C
(48°F)		10°C
(50°F)		12°C
(53°F)		14°C
(57°F)		16°C
(61°F)
Average low14°C
(58°F)		14°C
(58°F)		13°C
(56°F)		11°C
(52°F)		9°C
(48°F)		7°C
(45°F)		6°C
(43°F)		6°C
(44°F)		7°C
(45°F)		9°C
(49°F)		11°C
(53°F)		13°C
(56°F)
Mean minimum11°C
(52°F)		10°C
(51°F)		10°C
(50°F)		7°C
(46°F)		5°C
(41°F)		5°C
(41°F)		3°C
(37°F)		3°C
(37°F)		3°C
(39°F)		5°C
(41°F)		7°C
(45°F)		10°C
(50°F)
Minimum10°C
(50°F)		9°C
(49°F)		8°C
(47°F)		6°C
(42°F)		4°C
(39°F)		2°C
(36°F)		2°C
(35°F)		1°C
(35°F)		3°C
(37°F)		3°C
(38°F)		7°C
(44°F)		9°C
(48°F)

Compare climate in Kaiapoi with other places

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

Monthly average precipitation in Kaiapoi, New Zealand

Kaiapoi usually has the most precipitation in April, November and December, with an average of 9 rainy days and 73 mm (2.9 inches) of precipitation per month. The driest months in Kaiapoi are February, August and September. On average, 44 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kaiapoi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)47 (1.8)40 (1.6)55 (2.2)70 (2.8)52 (2.1)66 (2.6)66 (2.6)46 (1.8)46 (1.8)56 (2.2)68 (2.7)81 (3.2)
Average precipitation days (≥ 1 mm)769878108810811

Monthly sunshine hours in Kaiapoi, New Zealand

The sunniest months in Kaiapoi are February, November and December, when the sun shines an average of 10 hours 31 minutes a day. Least sunny months in Kaiapoi: May, June and July receive an average of 6 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kaiapoi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours279299267231204164185220250293313334
Mean daily daylight hours14h 59m13h 49m12h 20m10h 51m9h 36m8h 58m9h 16m10h 22m11h 47m13h 17m14h 38m15h 21m

Solar UV radiation in Kaiapoi, New Zealand

Kaiapoi 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 Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Kaiapoi UV Index data.

Average daily maximum UV levels by month for Kaiapoi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)1312963223591012