The Cook Islands are tropical, so it’s no surprise that one of the biggest variations in weather throughout the year is the amount of rainfall. The best time to visit the Cook Islands is during the … When to go and weather in The Cook Islands. Best time of year to visit Rarotonga & Cook Islands Best time to visit Rarotonga and Cook Islands is winter and early spring, from May to October, which also coincides with dry season. It also avoids the peak holiday seasons allowing for a much more relaxing escape. Best Time to Visit the Cook Islands. Bring a light scarf for the breezes, a light rain jacket or umbrella for rain showers, and a light sweatshirt for the evenings. Like most South Pacific islands, it can rain any month, usually in short-lived downpours, but the highest rainfall occurs between November and March. But the heat is mitigated by trade winds. The highest average temperature in Cook Islands is 27°C in january and the lowest is 23°C in august. The average temperatures are a little cooler throughout the islands, which is hardly felt in the north, but more noticeable in the south with the average lows hovering just below 20°C (68°F). The humidity is great, and the temperatures remain high in the south, yet a few degrees below the value of the north. Between the months of July and October you’re likely to spot whales from the shorelines as they complete their annual passing of the Cook Islands. Late December and early January is also one of the busier times with seasonal holiday makers and expats returning home for Christmas. The coldest nights in Mangaia and Rarotonga hit 15°C (59°F). In the south, however, the lows drop to just above 20°C (68°F), and trade winds might feel cooler for those who are sensitive to the cold. Higher temperatures prevail in the always hot northern islands. Occasionally, the night temperature in Rarotonga and Mangaia can plunge to 15 °C (59 °F). The best time to visit the Cook Islands is during the driest months (April to November). Get ready for an inspiring birdwatching trip! Cook Islands Tourism: Tripadvisor has 87,404 reviews of Cook Islands Hotels, Attractions, and Restaurants making it your best Cook Islands resource. Rainfall occurs only once in three or four days, being slightly rarer in the southern islands. If you've been reading about all the exciting activities available in the Cook Islands, you're probably thinking this 15-isle archipelago is well worth a visit. In August, Manureva Aquafest with its five-day non-stop parties will spin you in the whirlwind of excitement. We’re often asked about the best time to visit Rarotonga. The crystal clear and warm shallow waters of the Cook Islands offer the best holidays and perfect snorkelling conditions. Though unfortunately there's not too much for surfers, Discover natural beauty of this island during the dry period, Check out the main sporting event on Rarotonga and one of the biggest paddling events in the world, This five-day watersports festival full of fun and energetic competitions annually draws crowds to the honeymoon island. Annual events and festivals to look out for. June 4th to October 21st. We are sure to have something to suit you. So, to help you do exactly that, here’s an overview of what you can expect and when to expect it throughout the year. Bring summer clothing for the warm day, and a sweatshirt or a light jacket for the night, especially for the south. If you visit the Cook Islands in the warmer half of the year, pack light summer clothing and all you need for a beach vacation. Tropical cyclones that form around the northern islands of the country are likely to hit the southern areas. The sunshine is plentiful anyway, as the downpours don't last long. If you go in April, pack as usual: light summer clothing with some rain-resistant outer layer or an umbrella, a light sweatshirt for the evening, and a light scarf for the breeze. Best time to visit Rarotonga & Cook Islands. The best time to visit Muri in Cook Islands is from january until november, when you will have a pleasant or warm temperature and limited till mediocre rainfall.The highest average temperature in Muri is 27°C in january and the lowest is 23°C in august.. The best times to visit Rarotonga for ideal weather are. The sea temperature in Avarua, Rarotonga, is comfortable for swimming, unlikely to go below 24°C (75°F). Now you know the Cook Islands experience average winter temperatures of 25 degrees, it’ll come as no surprise that June to August is one of the busiest periods with travellers from Australia and New Zealand escaping their chilly winters. What is the weather like there in July as it will be winter there. 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