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Monthly climate in Riwaka, Tasman, New Zealand

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Riwaka features a oceanic climate (Cfb).Temperatures typically range between 9 °C (48 °F) and 18 °C (64 °F) through the year, but rarely can drop to 3 °C (37 °F) or can rise to as high as 26 °C (79 °F).The average annual precipitation amounts to about 1601 mm (63.0 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually.Riwaka enjoys an average of 2985 hours of sunshine throughout the year, and daylight varies from 9 hours 14 minutes to 15 hours 3 minutes per day.

Monthly average temperatures in Riwaka, Tasman, New Zealand §

The warmest months in Riwaka 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 9 to 10 °C (48 - 50 °F) throughout the day. On average each year, Riwaka experiences 1 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 Riwaka, Tasman, 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 26°C
(79°F)		 25°C
(76°F)		 23°C
(73°F)		 21°C
(69°F)		 18°C
(65°F)		 16°C
(61°F)		 14°C
(58°F)		 15°C
(59°F)		 16°C
(61°F)		 19°C
(66°F)		 23°C
(74°F)		 24°C
(76°F)
Mean maximum 24°C
(76°F)		 23°C
(74°F)		 22°C
(71°F)		 20°C
(68°F)		 17°C
(63°F)		 14°C
(58°F)		 13°C
(56°F)		 14°C
(57°F)		 15°C
(60°F)		 18°C
(64°F)		 20°C
(68°F)		 23°C
(73°F)
Average high 20°C
(69°F)		 20°C
(68°F)		 18°C
(65°F)		 16°C
(62°F)		 14°C
(58°F)		 12°C
(54°F)		 11°C
(52°F)		 12°C
(53°F)		 13°C
(55°F)		 14°C
(58°F)		 16°C
(62°F)		 19°C
(66°F)
Daily mean 18°C
(64°F)		 17°C
(63°F)		 16°C
(61°F)		 14°C
(57°F)		 12°C
(54°F)		 10°C
(50°F)		 9°C
(48°F)		 9°C
(49°F)		 10°C
(51°F)		 12°C
(54°F)		 14°C
(58°F)		 16°C
(62°F)
Average low 15°C
(59°F)		 15°C
(59°F)		 14°C
(57°F)		 12°C
(53°F)		 10°C
(50°F)		 8°C
(46°F)		 7°C
(44°F)		 7°C
(46°F)		 8°C
(47°F)		 10°C
(50°F)		 12°C
(53°F)		 14°C
(57°F)
Mean minimum 11°C
(53°F)		 11°C
(52°F)		 11°C
(51°F)		 8°C
(46°F)		 6°C
(43°F)		 6°C
(43°F)		 4°C
(39°F)		 4°C
(40°F)		 4°C
(40°F)		 6°C
(42°F)		 8°C
(46°F)		 11°C
(52°F)
Minimum 10°C
(51°F)		 10°C
(51°F)		 10°C
(50°F)		 6°C
(42°F)		 4°C
(40°F)		 3°C
(38°F)		 3°C
(37°F)		 4°C
(39°F)		 4°C
(39°F)		 4°C
(40°F)		 7°C
(44°F)		 9°C
(48°F)

Compare climate in Riwaka with other places

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

Monthly average precipitation in Riwaka, Tasman, New Zealand §

Riwaka usually has the most precipitation in May, July and August, with an average of 13 rainy days and 170 mm (6.7 inches) of precipitation per month.The driest months in Riwaka are January, February and June. On average, 88 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riwaka, Tasman, 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) 85 (3.4) 94 (3.7) 128 (5.0) 154 (6.1) 168 (6.6) 86 (3.4) 184 (7.3) 156 (6.2) 125 (4.9) 137 (5.4) 132 (5.2) 151 (5.9)
Average precipitation days (≥ 1 mm) 8 8 11 13 12 11 13 14 12 13 13 14

Monthly sunshine hours in Riwaka, Tasman, New Zealand §

The sunniest months in Riwaka are February, November and December, when the sun shines an average of 10 hours 3 minutes a day.Least sunny months in Riwaka: May, June and July receive an average of 6 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riwaka, Tasman, 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 282 289 268 225 206 178 183 215 248 271 291 324
Mean daily daylight hours 14h 44m 13h 40m 12h 19m 10h 57m 9h 49m 9h 14m 9h 31m 10h 31m 11h 48m 13h 11m 14h 24m 15h 3m

Solar UV radiation in Riwaka, Tasman, New Zealand §

Riwaka experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 13 - 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 4. For more detailed information, check out our hourly Riwaka UV Index data.

Average daily maximum UV levels by month for Riwaka, Tasman, 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 13 9 7 4 2 2 4 6 9 11 13