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Region in Northland, New Zealand

Bay of Islands weather by month and the best time to visit

Updated October 2026Sources
Dec–AprBest time to visit

When to go to Bay of Islands

Dec–Apr is warm and sunny, with peak crowds in Jan. Winter is mild but rainier; storms can cancel boat trips.

Bay of Islands weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
10°15°20°25°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January23°C74°F17°C62°F74 mm73%Pleasant
February24°C74°F18°C64°F74 mm74%Pleasant
March22°C72°F17°C62°F95 mm76%Pleasant
April20°C68°F15°C59°F80 mm78%Pleasant
May18°C64°F13°C56°F109 mm80%Cool
June16°C60°F12°C53°F122 mm82%Cool
July15°C58°F10°C51°F139 mm82%Cool
August15°C58°F10°C51°F122 mm82%Cool
September16°C61°F11°C52°F89 mm81%Cool
October18°C64°F12°C53°F68 mm78%Cool
November20°C67°F13°C56°F67 mm76%Pleasant
December22°C71°F16°C60°F71 mm75%Pleasant

Best months across New Zealand

PlaceBest monthsWarmest month
AucklandDec–MarFeb (24°C)
QueenstownJul–Aug, Dec–MarJan (20°C)
WellingtonJan–AprFeb (19°C)
ChristchurchDec–MarJan (24°C)
RotoruaNov–AprJan (23°C)
WanakaJul–Aug, Dec–MarJan (21°C)
TaupoNov–AprJan (24°C)
Bay of IslandsDec–AprFeb (24°C)
Milford SoundNov–AprFeb (16°C)
Lake TekapoNov–AprFeb (22°C)
CoromandelDec–AprFeb (24°C)
TaurangaDec–AprFeb (23°C)
DunedinDec–MarJan (16°C)
NelsonDec–AprFeb (25°C)
Waiheke IslandDec–MarFeb (24°C)
KaikouraDec–MarJan (20°C)
Franz JosefDec–AprFeb (19°C)

Quick answers

What is the best month to visit Bay of Islands?

Dec–Apr. Dec–Apr is warm and sunny, with peak crowds in Jan. Winter is mild but rainier; storms can cancel boat trips.

When is the rainy season in Bay of Islands?

Rain peaks in July with about 139 mm. No month averages 150 mm or more.

What is the hottest month in Bay of Islands?

February, with average highs of 24°C (74°F).

How cold does Bay of Islands get?

The coolest nights are in July, averaging 10°C (51°F).

More about Bay of Islands

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.