Monthly climate in Port Waikato, New Zealand

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Port Waikato features a oceanic climate (Cfb). Temperatures typically range between 12 °C (54 °F) and 20 °C (68 °F) through the year, but rarely can drop to 4 °C (40 °F) or can rise to as high as 26 °C (79 °F). The average annual precipitation amounts to about 1347 mm (53.1 inches) and receives 153 rainy days on the 1 mm (0.04 inches) threshold annually. Port Waikato enjoys an average of 2952 hours of sunshine throughout the year, and daylight varies from 9 hours 36 minutes to 14 hours 40 minutes per day.

Monthly average temperatures in Port Waikato, New Zealand

The warmest months in Port Waikato are January, February and March, with daily mean temperatures ranging from 19 to 20 °C (66 - 68 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 12 to 13 °C (54 - 55 °F) throughout the day. On average each year, Port Waikato 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 Port Waikato. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum25°C
(77°F)
26°C
(79°F)
24°C
(76°F)
22°C
(73°F)
20°C
(68°F)
18°C
(66°F)
17°C
(64°F)
16°C
(62°F)
18°C
(64°F)
19°C
(67°F)
21°C
(71°F)
24°C
(75°F)
Mean maximum23°C
(75°F)
24°C
(76°F)
23°C
(74°F)
21°C
(71°F)
19°C
(67°F)
17°C
(63°F)
16°C
(62°F)
16°C
(61°F)
17°C
(63°F)
18°C
(65°F)
20°C
(69°F)
23°C
(73°F)
Average high21°C
(70°F)
22°C
(71°F)
21°C
(70°F)
19°C
(66°F)
17°C
(62°F)
15°C
(59°F)
14°C
(57°F)
14°C
(57°F)
14°C
(58°F)
16°C
(60°F)
18°C
(64°F)
20°C
(68°F)
Daily mean19°C
(67°F)
20°C
(68°F)
19°C
(66°F)
17°C
(63°F)
15°C
(59°F)
13°C
(56°F)
12°C
(54°F)
12°C
(54°F)
13°C
(55°F)
14°C
(58°F)
16°C
(61°F)
18°C
(65°F)
Average low18°C
(64°F)
18°C
(65°F)
17°C
(63°F)
15°C
(60°F)
13°C
(56°F)
12°C
(53°F)
11°C
(51°F)
11°C
(52°F)
11°C
(53°F)
13°C
(55°F)
14°C
(58°F)
17°C
(63°F)
Mean minimum15°C
(59°F)
14°C
(58°F)
14°C
(58°F)
12°C
(53°F)
8°C
(47°F)
9°C
(48°F)
6°C
(43°F)
7°C
(44°F)
8°C
(47°F)
9°C
(49°F)
12°C
(53°F)
14°C
(57°F)
Minimum14°C
(57°F)
13°C
(56°F)
13°C
(56°F)
10°C
(51°F)
7°C
(45°F)
6°C
(43°F)
4°C
(40°F)
5°C
(42°F)
7°C
(45°F)
9°C
(48°F)
10°C
(51°F)
11°C
(53°F)

Compare climate in Port Waikato with other places

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

Monthly average precipitation in Port Waikato, New Zealand

Port Waikato usually has the most precipitation in May, July and August, with an average of 15 rainy days and 148 mm (5.8 inches) of precipitation per month. The driest months in Port Waikato are January, February and November. On average, 76 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Waikato. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)61 (2.4)79 (3.1)93 (3.7)123 (4.9)132 (5.2)130 (5.1)153 (6.0)158 (6.2)123 (4.9)107 (4.2)89 (3.5)99 (3.9)
Average precipitation days (≥ 1 mm)7810121214161816161212

Monthly sunshine hours in Port Waikato, New Zealand

The sunniest months in Port Waikato are January, November and December, when the sun shines an average of 9 hours 41 minutes a day. Least sunny months in Port Waikato: May, June and July receive an average of 6 hours 14 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Waikato. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours270269263223202173197225246258291329
Mean daily daylight hours14h 23m13h 28m12h 17m11h 5m10h 6m9h 36m9h 51m10h 42m11h 50m13h 2m14h 6m14h 40m

Solar UV radiation in Port Waikato, New Zealand

Port Waikato 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 Port Waikato UV Index data.

Average daily maximum UV levels by month for Port Waikato. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141410743357101113