nomadseason

Monthly climate in Halswell, New Zealand

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Halswell features a oceanic climate (Cfb). Temperatures typically range between 7 °C (45 °F) and 18 °C (64 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 718 mm (28.3 inches) and receives 102 rainy days on the 1 mm (0.04 inches) threshold annually. Halswell enjoys an average of 3024 hours of sunshine throughout the year, and daylight varies from 8 hours 58 minutes to 15 hours 20 minutes per day.

Monthly average temperatures in Halswell, New Zealand

The warmest months in Halswell are January, February and December, with daily mean temperatures ranging from 16 to 18 °C (62 - 64 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 7 to 8 °C (45 - 47 °F) throughout the day. On average each year, Halswell experiences 31 days above 25 °C (77.0 °F) and 15 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Halswell. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(93°F)		32°C
(91°F)		29°C
(84°F)		28°C
(83°F)		23°C
(74°F)		21°C
(70°F)		18°C
(65°F)		21°C
(71°F)		23°C
(73°F)		27°C
(81°F)		30°C
(87°F)		31°C
(88°F)
Mean maximum30°C
(87°F)		30°C
(86°F)		28°C
(82°F)		25°C
(77°F)		21°C
(70°F)		18°C
(64°F)		16°C
(62°F)		19°C
(66°F)		21°C
(70°F)		24°C
(75°F)		26°C
(79°F)		28°C
(82°F)
Average high23°C
(74°F)		23°C
(73°F)		21°C
(69°F)		18°C
(65°F)		15°C
(60°F)		12°C
(53°F)		12°C
(53°F)		13°C
(56°F)		15°C
(59°F)		17°C
(63°F)		19°C
(67°F)		21°C
(70°F)
Daily mean18°C
(64°F)		18°C
(64°F)		16°C
(60°F)		13°C
(55°F)		10°C
(50°F)		7°C
(46°F)		7°C
(45°F)		8°C
(47°F)		10°C
(50°F)		12°C
(54°F)		15°C
(58°F)		16°C
(62°F)
Average low13°C
(56°F)		12°C
(55°F)		11°C
(52°F)		8°C
(47°F)		6°C
(42°F)		4°C
(39°F)		3°C
(37°F)		4°C
(39°F)		5°C
(41°F)		7°C
(45°F)		10°C
(50°F)		12°C
(54°F)
Mean minimum7°C
(46°F)		6°C
(44°F)		5°C
(41°F)		2°C
(36°F)		-0°C
(32°F)		1°C
(33°F)		-3°C
(27°F)		-2°C
(29°F)		-1°C
(30°F)		1°C
(34°F)		4°C
(40°F)		7°C
(44°F)
Minimum6°C
(43°F)		5°C
(41°F)		2°C
(37°F)		-1°C
(31°F)		-1°C
(31°F)		-4°C
(26°F)		-4°C
(25°F)		-2°C
(28°F)		-2°C
(28°F)		-1°C
(30°F)		3°C
(38°F)		5°C
(41°F)

Compare climate in Halswell with other places

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

Monthly average precipitation in Halswell, New Zealand

Halswell usually has the most precipitation in July, November and December, with an average of 9 rainy days and 74 mm (2.9 inches) of precipitation per month. The driest months in Halswell are January, February and August. On average, 46 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Halswell. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)48 (1.9)40 (1.6)53 (2.1)69 (2.7)56 (2.2)61 (2.4)72 (2.8)50 (2.0)53 (2.1)63 (2.5)75 (2.9)77 (3.0)
Average precipitation days (≥ 1 mm)659888109912810

Monthly sunshine hours in Halswell, New Zealand

The sunniest months in Halswell are February, November and December, when the sun shines an average of 10 hours 25 minutes a day. Least sunny months in Halswell: May, June and July receive an average of 6 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Halswell. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours279296267231202166183217248291309331
Mean daily daylight hours14h 59m13h 48m12h 20m10h 51m9h 36m8h 58m9h 17m10h 22m11h 47m13h 17m14h 37m15h 20m

Solar UV radiation in Halswell, New Zealand

Halswell 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 Halswell UV Index data.

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