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Monthly climate in Wairoa, New Zealand

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Wairoa features a oceanic climate (Cfb). Temperatures typically range between 9 °C (49 °F) and 19 °C (66 °F) through the year, but rarely can drop to 1 °C (34 °F) or can rise to as high as 32 °C (89 °F). The average annual precipitation amounts to about 1186 mm (46.7 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually. Wairoa enjoys an average of 2914 hours of sunshine throughout the year, and daylight varies from 9 hours 27 minutes to 14 hours 50 minutes per day.

Monthly average temperatures in Wairoa, New Zealand

The warmest months in Wairoa are January, February and December, with daily mean temperatures ranging from 18 to 19 °C (64 - 66 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 9 to 11 °C (49 - 51 °F) throughout the day. On average each year, Wairoa experiences 20 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 Wairoa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum29°C
(85°F)		32°C
(89°F)		27°C
(81°F)		24°C
(76°F)		22°C
(72°F)		19°C
(66°F)		17°C
(62°F)		18°C
(65°F)		20°C
(69°F)		24°C
(76°F)		26°C
(79°F)		27°C
(80°F)
Mean maximum28°C
(83°F)		28°C
(83°F)		25°C
(77°F)		23°C
(74°F)		20°C
(69°F)		17°C
(63°F)		16°C
(61°F)		17°C
(62°F)		19°C
(67°F)		22°C
(72°F)		23°C
(74°F)		26°C
(78°F)
Average high23°C
(73°F)		23°C
(73°F)		20°C
(68°F)		18°C
(65°F)		16°C
(61°F)		13°C
(56°F)		13°C
(55°F)		13°C
(56°F)		14°C
(58°F)		17°C
(62°F)		19°C
(66°F)		21°C
(70°F)
Daily mean19°C
(66°F)		19°C
(66°F)		17°C
(62°F)		15°C
(58°F)		12°C
(54°F)		11°C
(51°F)		9°C
(49°F)		10°C
(50°F)		11°C
(52°F)		13°C
(56°F)		15°C
(60°F)		18°C
(64°F)
Average low15°C
(59°F)		15°C
(60°F)		14°C
(57°F)		11°C
(52°F)		9°C
(49°F)		8°C
(46°F)		7°C
(44°F)		7°C
(44°F)		8°C
(46°F)		9°C
(49°F)		12°C
(54°F)		14°C
(57°F)
Mean minimum10°C
(50°F)		10°C
(51°F)		9°C
(49°F)		6°C
(44°F)		4°C
(40°F)		5°C
(41°F)		3°C
(37°F)		2°C
(36°F)		3°C
(37°F)		5°C
(40°F)		7°C
(45°F)		9°C
(49°F)
Minimum8°C
(47°F)		7°C
(45°F)		8°C
(47°F)		5°C
(42°F)		3°C
(38°F)		2°C
(36°F)		1°C
(35°F)		1°C
(35°F)		1°C
(34°F)		3°C
(38°F)		6°C
(43°F)		8°C
(47°F)

Compare climate in Wairoa with other places

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

Monthly average precipitation in Wairoa, New Zealand

Wairoa usually has the most precipitation in June, September and November, with an average of 11 rainy days and 124 mm (4.9 inches) of precipitation per month. The driest months in Wairoa are January, February and August. On average, 72 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Wairoa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)54 (2.1)83 (3.3)107 (4.2)108 (4.2)94 (3.7)123 (4.9)105 (4.1)79 (3.1)134 (5.3)89 (3.5)114 (4.5)98 (3.9)
Average precipitation days (≥ 1 mm)9913121012121111121213

Monthly sunshine hours in Wairoa, New Zealand

The sunniest months in Wairoa are January, November and December, when the sun shines an average of 9 hours 30 minutes a day. Least sunny months in Wairoa: 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 Wairoa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours273272259223201166188223237266282318
Mean daily daylight hours14h 32m13h 33m12h 18m11h 2m9h 58m9h 27m9h 42m10h 37m11h 49m13h 6m14h 14m14h 50m

Solar UV radiation in Wairoa, New Zealand

Wairoa experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 13 - 14, 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 Wairoa UV Index data.

Average daily maximum UV levels by month for Wairoa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)14131074335791114