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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Pulse Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
The Cook Islands experience a tropical maritime climate with average monthly temperatures ranging from 22°C to 28°C year-round. The wet season runs November to April (hotter, higher humidity), while the dry season from May to October brings cooler, more stable conditions. Refer to the live forecast above for current conditions.
What is the weather like month by month?
From May to October, the dry season delivers daytime highs of 24–27°C, lower humidity, and steady trade winds. This period (especially June, July, and August) is the most comfortable for travel. From November to April, the wet season brings higher humidity, afternoon showers, and occasional tropical cyclones, with average temperatures around 26–28°C. Sea surface temperatures remain warm year-round, ranging from 24°C in August to 28°C in February, making swimming possible in any month.
How do temperatures and rainfall vary?
The coolest months are July and August, with average lows near 18°C. The warmest are January and February, where highs can reach 30°C. Rainfall is highest in January and February (around 250–300 mm per month) and lowest in June and July (about 50–80 mm per month). The weather in Cook Islands 10 days forecast often shows brief tropical showers even in the dry season, so check the live forecast above for your travel dates.
What is the best month to visit the Cook Islands?
June, July, and August offer the best combination of low humidity, minimal rainfall, and comfortable temperatures around 24–26°C. These months also have the calmest seas for snorkelling.
What is the weather in Cook Islands June like?
June is dry and mild, with average highs of 25°C and lows around 18°C. Rainfall is low (about 60 mm), and sea temperatures sit at a pleasant 24–25°C. It is one of the most popular months for tourism.