Average monthly water temperature in Opua, New Zealand
On this page you find the mean water temperature over the year in Opua (Northland), New Zealand. Take a closer look at the water temperature patterns and what they mean for swimming and recreation.
In Opua, the water undergoes seasonal changes. The warmest month is January, with an average water temperature of 21°C (70°F).
The coldest water temperature month, July, has an average temperature of 16°C (61°F). It may not be the ideal time for a swim.
Opua Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Opua - and find the best time to visit.
Opua 3-Day Forecast
Temperature Rainfall Water Temp
See the full Opua climate overview or explore weather in New Zealand.
Popular this month
Where to go in September - average daytime high across popular destinations.
Paihia
17°C (63°F) Auckland
17°C (63°F) Rotorua15°C (59°F) Christchurch
15°C (59°F) Wellington14°C (57°F) Nelson14°C (57°F) Taupo14°C (57°F) Queenstown6°C (43°F) 
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The Tongariro Crossing in New Zealand
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White-water sledge and raft in Rotorua
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Compare New Zealand weather in February for Auckland, Rotorua, Taupo, Christchurch and Queenstown to see which island has the best conditions.