Cookislands - When to Visit

When to Cookislands

Climate guide & best times to travel

The Cook Islands enjoy a tropical maritime climate with warm temperatures year-round, situated in the South Pacific. The islands experience two main seasons: a warmer, wetter season from November to April (summer) with temperatures around 26-29°C and higher humidity, and a cooler, drier season from May to October (winter) with temperatures around 22-26°C. The consistent 70% humidity throughout the year creates comfortable tropical conditions, though the wet season brings increased rainfall and occasional tropical storms or cyclones, particularly from December to March. The Cook Islands' climate is moderated by trade winds, which provide pleasant breezes especially during the dry season. Rainfall patterns show distinct variation between seasons, with the wet season receiving significantly more precipitation than the drier winter months. Despite seasonal variations, the islands maintain their tropical paradise appeal throughout the year, with warm ocean temperatures perfect for swimming and water activities in any month.

Best Time to Visit

Beach & Relaxation
May to October offers the best beach weather with lower rainfall, comfortable temperatures, and consistent sunshine, perfect for lounging on pristine white sand beaches and swimming in crystal-clear lagoons.
Cultural Exploration
April to June and September to October are ideal for experiencing local culture, with pleasant weather for village visits, traditional dance performances, and exploring historical sites without peak season crowds.
Adventure & Hiking
June to September provides the most comfortable conditions for hiking and outdoor adventures, with cooler temperatures, lower humidity, and minimal rainfall making trail conditions optimal.
Budget Travel
November to March (excluding Christmas/New Year) offers the best value with lower accommodation rates and fewer tourists, though you'll need to accept occasional rain and higher humidity.

Month-by-Month Guide

January

January sits in the heart of the wet season with warm temperatures and high humidity. Expect frequent tropical showers and occasional storms, though sunshine still breaks through regularly. This is peak summer in the Cook Islands with lush, green landscapes.

28°C (82°F) High
23°C (73°F) Low
250mm (10in) Rainfall
High Crowds
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February

February continues the wet season pattern with warm, humid conditions and regular rainfall. This is cyclone season, so weather can be unpredictable. The islands are vibrant and green, with fewer crowds than January as holiday visitors depart.

28°C (82°F) High
23°C (73°F) Low
240mm (9.5in) Rainfall
Medium Crowds
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March

March marks the tail end of the wet season with still-warm temperatures and frequent showers. Humidity remains high, but rainfall begins to decrease slightly. The ocean is warm and inviting, though occasional storms can still occur.

28°C (82°F) High
23°C (73°F) Low
220mm (8.7in) Rainfall
Low Crowds
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April

April transitions toward the dry season with noticeably less rainfall and slightly cooler temperatures. Conditions become more stable and predictable, making it an excellent shoulder season month. The islands are still lush from summer rains.

27°C (81°F) High
22°C (72°F) Low
150mm (5.9in) Rainfall
Low Crowds
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May

May ushers in the dry season with pleasant temperatures, lower humidity, and significantly reduced rainfall. Trade winds provide comfortable breezes, and sunny days dominate. This is one of the best months for visiting the Cook Islands.

26°C (79°F) High
21°C (70°F) Low
100mm (3.9in) Rainfall
Medium Crowds
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June

June offers ideal conditions with cooler temperatures, low rainfall, and plenty of sunshine. The dry season is in full swing with comfortable weather perfect for all activities. This marks the beginning of peak tourist season.

25°C (77°F) High
20°C (68°F) Low
80mm (3.1in) Rainfall
High Crowds
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July

July is one of the driest and most popular months with beautiful weather and cool trade winds. Temperatures are at their coolest for the year, making outdoor activities particularly enjoyable. Expect peak season crowds and higher prices.

24°C (75°F) High
19°C (66°F) Low
60mm (2.4in) Rainfall
High Crowds
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August

August continues the excellent dry season weather with minimal rainfall and comfortable temperatures. This is peak winter in the Cook Islands, offering perfect beach weather and ideal conditions for water sports and diving.

24°C (75°F) High
19°C (66°F) Low
60mm (2.4in) Rainfall
High Crowds
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September

September maintains the dry season's favorable conditions with low rainfall and pleasant temperatures. As peak season winds down, you'll find slightly fewer crowds while still enjoying excellent weather for all activities.

25°C (77°F) High
20°C (68°F) Low
70mm (2.8in) Rainfall
Medium Crowds
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October

October marks the end of the dry season with temperatures beginning to warm slightly and rainfall increasing gradually. Weather remains generally pleasant with mostly sunny days. This is an excellent shoulder season month with good value.

26°C (79°F) High
21°C (70°F) Low
110mm (4.3in) Rainfall
Low Crowds
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November

November transitions into the wet season with increasing temperatures, humidity, and rainfall. Tropical showers become more frequent, though sunshine still appears between rain periods. Crowds are minimal and accommodation rates drop.

27°C (81°F) High
22°C (72°F) Low
170mm (6.7in) Rainfall
Low Crowds
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December

December brings full wet season conditions with warm temperatures and regular rainfall. The holiday period sees increased visitor numbers despite the weather. Expect humid conditions, occasional storms, but also beautiful tropical scenery and festive atmosphere.

28°C (82°F) High
23°C (73°F) Low
230mm (9.1in) Rainfall
High Crowds
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Activities in Cookislands