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Monthly climate in Oamaru, Otago, New Zealand

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Oamaru features a oceanic climate (Cfb).Temperatures typically range between 7 °C (45 °F) and 15 °C (60 °F) through the year, but rarely can drop to 1 °C (34 °F) or can rise to as high as 28 °C (83 °F).The average annual precipitation amounts to about 846 mm (33.3 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually.Oamaru enjoys an average of 3029 hours of sunshine throughout the year, and daylight varies from 8 hours 47 minutes to 15 hours 32 minutes per day.

Monthly average temperatures in Oamaru, Otago, New Zealand §

The warmest months in Oamaru are January, February and December, with daily mean temperatures ranging from 15 to 15 °C (58 - 60 °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 - 46 °F) throughout the day. On average each year, Oamaru experiences 0 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 Oamaru, Otago, New Zealand.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(83°F)		 28°C
(82°F)		 24°C
(75°F)		 22°C
(73°F)		 17°C
(64°F)		 16°C
(61°F)		 15°C
(59°F)		 16°C
(61°F)		 18°C
(65°F)		 20°C
(68°F)		 25°C
(77°F)		 24°C
(76°F)
Mean maximum 24°C
(75°F)		 25°C
(77°F)		 22°C
(73°F)		 21°C
(69°F)		 16°C
(62°F)		 14°C
(57°F)		 13°C
(56°F)		 15°C
(59°F)		 17°C
(63°F)		 18°C
(65°F)		 22°C
(71°F)		 23°C
(73°F)
Average high 18°C
(65°F)		 18°C
(65°F)		 17°C
(63°F)		 15°C
(59°F)		 13°C
(55°F)		 10°C
(51°F)		 10°C
(50°F)		 11°C
(52°F)		 12°C
(54°F)		 13°C
(56°F)		 15°C
(60°F)		 17°C
(63°F)
Daily mean 15°C
(60°F)		 15°C
(60°F)		 14°C
(58°F)		 12°C
(54°F)		 10°C
(50°F)		 8°C
(46°F)		 7°C
(45°F)		 8°C
(46°F)		 9°C
(49°F)		 11°C
(51°F)		 13°C
(55°F)		 15°C
(58°F)
Average low 13°C
(56°F)		 13°C
(55°F)		 12°C
(54°F)		 10°C
(50°F)		 7°C
(46°F)		 5°C
(42°F)		 4°C
(40°F)		 5°C
(42°F)		 6°C
(44°F)		 8°C
(47°F)		 10°C
(51°F)		 12°C
(54°F)
Mean minimum 9°C
(49°F)		 9°C
(49°F)		 9°C
(48°F)		 6°C
(44°F)		 4°C
(39°F)		 4°C
(39°F)		 2°C
(36°F)		 2°C
(36°F)		 3°C
(38°F)		 4°C
(40°F)		 6°C
(44°F)		 9°C
(49°F)
Minimum 8°C
(47°F)		 8°C
(47°F)		 7°C
(46°F)		 5°C
(41°F)		 2°C
(36°F)		 2°C
(36°F)		 1°C
(34°F)		 2°C
(35°F)		 2°C
(35°F)		 4°C
(39°F)		 5°C
(42°F)		 8°C
(47°F)

Compare climate in Oamaru with other places

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

Monthly average precipitation in Oamaru, Otago, New Zealand §

Oamaru usually has the most precipitation in February, November and December, with an average of 13 rainy days and 100 mm (4.0 inches) of precipitation per month.The driest months in Oamaru are May, June and August. On average, 39 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Oamaru, Otago, New Zealand.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 79 (3.1) 100 (3.9) 66 (2.6) 86 (3.4) 40 (1.6) 39 (1.5) 69 (2.7) 39 (1.5) 46 (1.8) 80 (3.2) 100 (4.0) 101 (4.0)
Average precipitation days (≥ 1 mm) 12 11 11 12 8 9 10 9 9 15 12 16

Monthly sunshine hours in Oamaru, Otago, New Zealand §

The sunniest months in Oamaru are February, November and December, when the sun shines an average of 10 hours 42 minutes a day.Least sunny months in Oamaru: May, June and July receive an average of 5 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Oamaru, Otago, New Zealand.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 280 299 270 230 201 159 178 212 252 281 318 344
Mean daily daylight hours 15h 9m 13h 54m 12h 21m 10h 47m 9h 27m 8h 47m 9h 7m 10h 16m 11h 46m 13h 21m 14h 46m 15h 32m

Solar UV radiation in Oamaru, Otago, New Zealand §

Oamaru 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 Oamaru UV Index data.

Average daily maximum UV levels by month for Oamaru, Otago, New Zealand.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 13 12 9 6 3 2 2 3 5 8 10 12