August weather forecast
Cook Islands

August continues the dry season in the Cook Islands, providing a predictable weather pattern characterized by low rainfall and relatively cool temperatures. During this month, average temperatures range from 18°C (64.4°F) to 25°C (77°F). This range, which is similar to the temperatures in July, combined with the sustained low humidity, offers comfortable climatic conditions for exploration and recreation.

In terms of rainfall, August continues the trend seen in the preceding months. The southern islands, including Rarotonga and Aitutaki, typically receive less than 100mm (3.94") of rainfall. Similarly, the northern islands, such as Manihiki and Penrhyn, experience lower rainfall levels, staying consistent with the general climatic pattern of the dry season.

August is comfortably outside the South Pacific cyclone season, and the risk of cyclones remains extremely low. Regardless, staying updated with local weather forecasts is always advisable when planning activities or travels.

When comparing August to the previous month of July, there is a clear continuation in weather patterns. The temperatures remain relatively consistent, with minor fluctuations, and rainfall levels stay low. Looking forward to September, this steady, dry weather pattern is expected to persist, albeit with a slight increase in both temperature and rainfall. Consequently, August represents the ongoing dry season in the Cook Islands, defined by low rainfall, cooler temperatures, and reduced humidity.

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• Roto - August »
  In Roto the average relative humidity in August is 77%. August weather conditions in Roto resemble those of July with minimal deviations.
• Tauhunu - August »
  On the last day of August, in Tauhunu sunrise is at 06:46 and sunset at 18:41 -10. In Tauhunu, during August, the rain falls for 19.8 days and regularly aggregates up to 69mm (2.72") of precipitation.
• Mapumai - August »
  The month with the least rainfall in Mapumai is August, when the rain falls for 10.3 days and typically collects 29mm (1.14") of precipitation. The coldest temperatures in Mapumai occur during August, when averages reach a peak of 23.8°C (74.8°F) and a low of 22.8°C (73°F).
• Avarua District - August »
  July and August are identified as the coldest months in Avarua District, with an average high-temperature of 25°C (77°F). The month with the least sunshine in Avarua District is August, with an average of 3h of sunshine.
• Arutanga - August »
  August, on average, is the coldest month in Arutanga, registering a high temperature of 24.8°C (76.6°F) and a low of 23.8°C (74.8°F). In August, in Arutanga the rain falls for 13.9 days.
• Omoka Village - August »
  Temperatures in Omoka Village reach their minimum during February and August, recording an average high-temperature of 30°C (86°F). In August, in Omoka Village, Cook Islands, the rain falls for 5 days.
• Mangarei Village - August »
  August, known for its average high temperature of 23.8°C (74.8°F) and an average low temperature of 22.8°C (73°F), is the coldest month in Mangarei Village, Cook Islands. June and August, with an average relative humidity of 76%, are the least humid months in Mangarei Village, Cook Islands.
• Oneroa Village - August »
  The month with the least sunshine in Oneroa Village is August, with an average of 3h of sunshine. In Oneroa Village in August, during 3 rainfall days, 124mm (4.88") of precipitation is typically accumulated.
• Tautu - August »
  In Tautu, in August, during 13.9 rainfall days, 32mm (1.26") of precipitation is typically accumulated. August in Tautu witnesses a small increase in rainfall to 32mm (1.26"), paving the way for more greenery.
• Nukuao - August »
  The month with the least rainfall in Nukuao is August, when the rain falls for 10.3 days and typically collects 29mm (1.14") of precipitation. Nukuao's coldest month, August, generally records average temperatures ranging from a high of 23.8°C (74.8°F) to a low of 22.8°C (73°F).
• Ngatiarua - August »
  In Ngatiarua during August, the rain falls for 10.3 days and regularly aggregates up to 29mm (1.14") of precipitation. August is the month with the least rainfall in Ngatiarua, Cook Islands.
• Karanga Village - August »
  August, recording an average high temperature of 23.8°C (74.8°F) and a low temperature of 22.8°C (73°F), is Karanga Village's coldest month. On the first day of August in Karanga Village, Cook Islands, sunrise is at 07:03 and sunset at 18:12.