Best time to visit Aitutaki, Cook Islands
The best time of year to visit Aitutaki for a beach holiday is during the relatively dry season from June through September.
However, anytime from late-May to mid-October is good for warm weather activities.
During the peak tourist season, from June through August, the island of Aitutaki enjoys an average high of 27°C (80°F).
Aitutaki Island weather
Aitutaki Island has a tropical climate, with a relatively dry season from June to September and a rainy season from December to May.
Daytime temperatures are warm throughout the year, falling to comfortable at night in the drier months.
Here are the average temperatures for Arutanga, Aitutaki Island.
What is the best month to visit Aitutaki?
June through September are the best months to visit Aitutaki – the climate is perfect with hot, sunny weather and little or no rainfall.
However, anytime from June through November are all good for a range of outdoor activities.
Which is the hottest month in Aitutaki?
The hottest month of the year in Aitutaki is usually February. You can expect an average high daytime temperature of 30°C (86°F), with moderate heat and humidity, and a low of 23°C (73°F).
On the warmest days of the hot season, the average temperature may climb above 32°C (90°F).
The hot season in Aitutaki usually lasts from early-January to mid-April, with an average daily high temperature above 29°C (84°F).
What is the humidity in Aitutaki?
Aitutaki experiences little seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 78% – 84% over the course of the year. Typically, it's humid all year round.
What do the humidity conditions feel like in Aitutaki?
We derive the humidity comfort level – what conditions feel like – from the dew point temperature, which measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.
Meteorologists agree that dew point temperature is a more consistant indication of 'absolute humidity' than relative humidity, which fluctuates with temperature.
The average annual dew point in Aitutaki is 21°C (70°F), and varies over the course of the year from slightly humid at 19°C (66°F) to muggy and uncomfortable at 24°C (75°F).
The more humid time of year in Aitutaki lasts from September through June, when you can expect the comfort level to be muggy at least 80% of the time.
The months with the most muggy days in Aitutaki are December through to May, when every day in each month is muggy or worse.
July and August are slightly more comfortable, with around 25 days in each that are muggy.
Which is the coolest month in Aitutaki?
The coolest month in Aitutaki is August, with an average high of 27°C (80°F) and a low of 20°C (68°F).
The cooler season lasts from late-June to mid-September, with an average daily high temperature below 27°C (80°F).
When is it sunniest in Aitutaki?
The sunniest time of year in Aitutaki is usually August with 11 hours of sunshine per day – that's around 93% of daylight hours.
When is the sea warmest in Aitutaki?
The sea is usually at its warmest in Aitutaki in March when the water temperature reaches 28°C (82°F), which is warm and pleasant for swimming.
The sea around Aitutaki is warm enough for swimming year-round.
Which month has the most rain in Aitutaki?
January is usually the wettest month in Aitutaki, with on average 113mm (4in) of rainfall distibuted across 13 days.
The wet season in Aitutaki lasts from late-November through to late-May, with a greater than 33% chance of a given day being a wet day.
You can expect some rainfall throughout the year in the Aitutaki Island.
The drier season lasts from late-May through to late-November. The month with the least rainfall in Aitutaki is September, with an average rainfall of 26mm.
What are the windiest months in Aitutaki?
The windiest month of the year in Aitutaki is September, with an average hourly wind speed of 23 kilometres per hour (12 knots; 14mph).
May to early-November are the windiest months of the year in Aitutaki, with average wind speeds of more than 21 kilometres per hour (11 knots; 13mph).
It's less windy from early-November to early-May. The calmest month of the year in Aitutaki is March, with an average hourly wind speed of 19 kilometres per hour (10 knots; 12mph).
The predominant wind direction in Aitutaki is from the east throughout the year.
Is there a risk of a tropical storm in Aitutaki?
The risk of a tropical storm in Aitutaki is greatest between January and March during the wet season. The likelihood of a tropical storm occurring is highest in February at 2.5%.
Aitutaki Weather Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average high temperature (°C) | |||||||||||
| 30 | 30 | 30 | 29 | 28 | 27 | 27 | 27 | 28 | 28 | 29 | 29 |
| Average low temperature (°C) | |||||||||||
| 23 | 23 | 23 | 22 | 22 | 20 | 21 | 20 | 21 | 21 | 22 | 23 |
| Average daily sunshine (hrs) | |||||||||||
| 7 | 8 | 8 | 9 | 10 | 11 | 10 | 11 | 12 | 12 | 10 | 8 |
| Average daily daylight (hrs) | |||||||||||
| 13 | 13 | 12 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 13 |
| Comfort level | |||||||||||
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| Comfort level – humidity (#muggy days) | |||||||||||
| 30 | 28 | 30 | 27 | 23 | 17 | 15 | 14 | 16 | 19 | 24 | 28 |
| Average dew point temperature (°C) | |||||||||||
| 23 | 23 | 24 | 23 | 22 | 20 | 19 | 19 | 20 | 20 | 22 | 23 |
| Average relative humidity (%) | |||||||||||
| 84 | 83 | 84 | 82 | 82 | 78 | 79 | 77 | 79 | 78 | 81 | 83 |
| UV Index (max) | |||||||||||
| 11+ | 11+ | 11+ | 10 | 8 | 6 | 7 | 9 | 11 | 11+ | 11+ | 11+ |
| Average days of rainfall (≥1mm) | |||||||||||
| 13 | 13 | 12 | 12 | 11 | 5 | 5 | 5 | 5 | 7 | 9 | 13 |
| Average monthly rainfall (mm) | |||||||||||
| 113 | 110 | 70 | 60 | 81 | 37 | 37 | 30 | 26 | 56 | 92 | 98 |
| Average wind speed (km/h) | |||||||||||
| 20 | 20 | 19 | 20 | 21 | 22 | 22 | 22 | 23 | 22 | 21 | 21 |
| Average sea temperature (°C) | |||||||||||
| 28 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 |
| Arutanga, Aitutaki Island, Cook Islands | |||||||||||
Holiday seasons
High season: Late-June through August, and around the Christmas and New Year period, when hotel and airline reservations should be booked in advance.
Source: Meteorological data for Aitutaki Island is based on weather statistics gathered during 2012 to 2021 by the Cook Islands Meteorological Service at the closest weather station: Aitutaki Airport (AIT), located 6km (3.7mi) northeast of the major settlement, Arutanga. Additional climate data is sourced from the United States National Oceanic and Atmospheric Administration (NOAA).
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
More about Cook Island…
Latest update: Best time to visit Aitutaki Island: 10 May, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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