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Sea temperature in New Zealand in September
13°Ccool · monthly average
The sea around New Zealand averages 13°C in September. Cool — best for confident swimmers or short dips.
Monthly sea temperatures across the year
Best swim months
—
Warmest month
January (18°C)
Coolest month
July (12°C)
Best beaches in New Zealand
North Island
Mission Bay
Popular North Island beach near Auckland.
North Island
Takapuna Beach
Popular North Island beach near Auckland.
North Island
Cheltenham Beach
Popular North Island beach near Auckland.
North Island
Long Bay
Popular North Island beach near Auckland.
North Island
Browns Bay
Popular North Island beach near Auckland.
North Island
Milford Beach
Popular North Island beach near Auckland.
North Island
Narrow Neck
Popular North Island beach near Auckland.
North Island
Piha Beach
Popular North Island beach near Auckland.
North Island
Karekare Beach
Popular North Island beach near Auckland.