Average monthly water temperature in Wellington, New Zealand
On this page you find the mean water temperature over the year in Wellington (Wellington), New Zealand. Discover when the water is at its warmest and coolest, perfect for planning your visit.
In Wellington, cooler water temperatures are a year-round feature. The warmest month is January, averaging 16°C (61°F).
The coldest month, August, sees averages of 11°C (52°F). This does not make it a great month for visitors who enjoy swimming.
Wellington Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Wellington - and find the best time to visit.
Wellington 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Wellington 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) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The Tongariro Crossing in New Zealand
It is called the most beautiful walk in New Zealand, the Tongariro Crossing. The official hiking season starts late October until end of April.
White-water sledge and raft in Rotorua
We recommend to white-water sledge and raft in Rotorua in summer (January, February) when the Glacier melt fills the rivers. This is the best time.