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Monthly climate in Riverton, Southland, New Zealand

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Riverton features a oceanic climate (Cfb).Temperatures typically range between 7 °C (44 °F) and 15 °C (59 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 29 °C (85 °F).The average annual precipitation amounts to about 1311 mm (51.6 inches) and receives 187 rainy days on the 1 mm (0.04 inches) threshold annually.Riverton enjoys an average of 2598 hours of sunshine throughout the year, and daylight varies from 8 hours 38 minutes to 15 hours 42 minutes per day.

Monthly average temperatures in Riverton, Southland, New Zealand §

The warmest months in Riverton are January, February and December, with daily mean temperatures ranging from 14 to 15 °C (57 - 59 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 7 to 8 °C (44 - 46 °F) throughout the day. On average each year, Riverton experiences 3 days above 25 °C (77.0 °F) and 7 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Riverton, Southland, 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 29°C
(85°F)		 27°C
(81°F)		 25°C
(77°F)		 24°C
(76°F)		 19°C
(67°F)		 18°C
(65°F)		 15°C
(60°F)		 17°C
(64°F)		 20°C
(67°F)		 23°C
(74°F)		 25°C
(77°F)		 26°C
(79°F)
Mean maximum 26°C
(79°F)		 26°C
(78°F)		 24°C
(75°F)		 21°C
(70°F)		 18°C
(64°F)		 16°C
(61°F)		 14°C
(57°F)		 15°C
(60°F)		 17°C
(64°F)		 21°C
(70°F)		 23°C
(73°F)		 23°C
(74°F)
Average high 18°C
(65°F)		 18°C
(65°F)		 18°C
(64°F)		 15°C
(59°F)		 13°C
(55°F)		 10°C
(51°F)		 10°C
(50°F)		 11°C
(52°F)		 12°C
(55°F)		 14°C
(57°F)		 16°C
(61°F)		 17°C
(64°F)
Daily mean 15°C
(59°F)		 14°C
(58°F)		 13°C
(57°F)		 11°C
(53°F)		 9°C
(49°F)		 7°C
(45°F)		 7°C
(44°F)		 8°C
(46°F)		 9°C
(48°F)		 10°C
(51°F)		 12°C
(54°F)		 14°C
(57°F)
Average low 11°C
(52°F)		 10°C
(51°F)		 10°C
(50°F)		 8°C
(47°F)		 6°C
(43°F)		 4°C
(40°F)		 4°C
(39°F)		 5°C
(41°F)		 5°C
(42°F)		 7°C
(44°F)		 8°C
(47°F)		 10°C
(51°F)
Mean minimum 6°C
(43°F)		 6°C
(42°F)		 4°C
(40°F)		 3°C
(38°F)		 1°C
(33°F)		 0°C
(33°F)		 -1°C
(30°F)		 -1°C
(30°F)		 0°C
(33°F)		 2°C
(37°F)		 4°C
(39°F)		 5°C
(41°F)
Minimum 4°C
(40°F)		 3°C
(38°F)		 2°C
(37°F)		 1°C
(34°F)		 -2°C
(29°F)		 -3°C
(26°F)		 -4°C
(25°F)		 -2°C
(28°F)		 -1°C
(31°F)		 1°C
(33°F)		 1°C
(34°F)		 5°C
(40°F)

Compare climate in Riverton with other places

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

Monthly average precipitation in Riverton, Southland, New Zealand §

Riverton usually has the most precipitation in February, September and October, with an average of 15 rainy days and 128 mm (5.0 inches) of precipitation per month.The driest months in Riverton are March, June and August. On average, 91 mm (3.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riverton, Southland, 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) 106 (4.2) 127 (5.0) 94 (3.7) 99 (3.9) 101 (4.0) 85 (3.3) 105 (4.1) 96 (3.8) 131 (5.2) 126 (4.9) 123 (4.9) 119 (4.7)
Average precipitation days (≥ 1 mm) 15 13 12 17 15 14 17 19 16 18 14 17

Monthly sunshine hours in Riverton, Southland, New Zealand §

The sunniest months in Riverton are February, November and December, when the sun shines an average of 9 hours 36 minutes a day.Least sunny months in Riverton: May, June and July receive an average of 4 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riverton, Southland, 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 239 250 232 186 151 139 141 176 221 245 291 322
Mean daily daylight hours 15h 18m 13h 59m 12h 22m 10h 43m 9h 20m 8h 38m 8h 59m 10h 12m 11h 45m 13h 24m 14h 54m 15h 42m

Solar UV radiation in Riverton, Southland, New Zealand §

Riverton experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 11 - 12, 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 Riverton UV Index data.

Average daily maximum UV levels by month for Riverton, Southland, 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) 12 11 8 5 3 2 2 3 5 8 9 12