Cook Islands

Cook Islands Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in the Cook Islands in August.

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Rarotonga Arutanga Arorangi Rakahanga

Planning a trip to the Cook Islands this August? Here's what you need to know about the weather:

What to Expect in the Cook Islands in August

August in the Cook Islands generally has warm temperatures, with precipitation levels ranging from moderate to high.

Temperatures

The average maximum temperatures are warm and range from 25°C (77°F) in Rarotonga to 29°C (84°F) in Penrhyn. Nighttime temperatures generally drop to 26°C (79°F) in Penrhyn and 22°C (72°F) in Rarotonga. During this period, Rarotonga experiences its coolest temperatures annually.

To learn more about the conditions in specific areas of the Cook Islands, check out the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Aitutaki with an average of 70 mm (2.8 in) to high rainfall in Pukapuka with 142 mm (5.6 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. Rarotonga enjoys about 191 hours of sunlight, ideal for those seeking sunny weather.

Explore the Cook Islands by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in the Cook Islands in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the Cook Islands.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in the Cook Islands

What is the weather like in August for some of the most popular destinations in the Cook Islands?

Temperature range in the Cook Islands (August)

Precipitation variation in the Cook Islands (August)

Rarotonga

In August Rarotonga generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
178 hours
191 hours
182 hours
Monthly rainfall
104 mm (4.1 in)
80 mm (3.1 in)
81 mm (3.2 in)
Monthly rainy days
13 days
14 days
11 days
Weather conditions
pleasant
perfect
perfect
Climate in Rarotonga →

Arutanga

In August Arutanga generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 24°C (75°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
187 hours
187 hours
189 hours
Monthly rainfall
82 mm (3.2 in)
71 mm (2.8 in)
79 mm (3.1 in)
Monthly rainy days
13 days
15 days
12 days
Weather conditions
perfect
perfect
perfect
Climate in Arutanga →

Arorangi

In August Arorangi generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
178 hours
191 hours
182 hours
Monthly rainfall
104 mm (4.1 in)
80 mm (3.1 in)
81 mm (3.2 in)
Monthly rainy days
13 days
14 days
11 days
Weather conditions
pleasant
perfect
perfect
Climate in Arorangi →

Avarua

In August Avarua generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
178 hours
191 hours
182 hours
Monthly rainfall
104 mm (4.1 in)
80 mm (3.1 in)
81 mm (3.2 in)
Monthly rainy days
13 days
14 days
11 days
Weather conditions
pleasant
perfect
perfect
Climate in Avarua →

Ngatangiia

In August Ngatangiia generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
178 hours
191 hours
182 hours
Monthly rainfall
105 mm (4.1 in)
80 mm (3.1 in)
81 mm (3.2 in)
Monthly rainy days
13 days
14 days
11 days
Weather conditions
pleasant
perfect
perfect
Climate in Ngatangiia →

Is your destination not in the list? Have a look at all destinations in the Cook Islands.

Popular cities in August

Day & night temperatures, rainfall and average weather in the Cook Islands in August.

City Weather Day temp Night temp Rainfall
Rarotonga 25°C (77°F) 22°C (72°F) 80 mm (3.1 in)
Arutanga 26°C (79°F) 24°C (75°F) 71 mm (2.8 in)
Arorangi 25°C (77°F) 22°C (72°F) 80 mm (3.1 in)
Rakahanga 29°C (84°F) 26°C (79°F) 119 mm (4.7 in)
Pukapuka 29°C (84°F) 26°C (79°F) 142 mm (5.6 in)
Penrhyn 29°C (84°F) 26°C (79°F) 100 mm (3.9 in)

The Cook Islands weather in August: frequently asked questions

What is the weather like in the Cook Islands in August?

the Cook Islands typically experiences perfect weather in August, part of the season. Daytime highs in Rarotonga average around 25°C (77°F), and temperatures drop to about 22°C (72°F) at night.

What is the average temperature in the Cook Islands in August?

Daytime temperatures in Rarotonga peak at roughly 25°C (77°F) in August, dropping to about 22°C (72°F) overnight.

Does the Cook Islands get a lot of rain in August?

August is on the drier side in the Cook Islands. Rarotonga averages only about 80 mm (3.1 in), with most days staying dry.

Is August a Good Time to Visit the Cook Islands?

We believe that August is one of the best times to visit the Cook Islands with overall perfect weather in Rarotonga.

On average, the best time to visit the Cook Islands is in June, August, September and October with generally perfect weather in Rarotonga. On the other hand, the months of January, February and December tend to have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in the Cook Islands.

Weather and climate has detailed information for every country in the world. Are you going to the Cook Islands? Get detailed historical weather averages for many cities in the Cook Islands.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

The perfect escape to get away from it all

Still relatively untouched the Cook Islands are what paradise looks like in your wildest dreams. Expect tropical and green landscapes, mesmerizing turquoise waters and powder soft white sand.
Must visit in the Cook Islands →