
Cook Islands · South Pacific
Rarotonga
Sea
74.5°F
Air
–
UV
–
Beach day
23–28°C
More like this
Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
72°F
75°F
79°F
82°F
86°F
90°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
8079.9
8181.4
8382.6
8181.4
7979.2
7777.1
7675.9
7675.5
7675.6
7676.0
7675.7
7878.3
AvgAvg °F
8181.2
8282.4
8382.8
8282.1
8080.4
7878.4
7777.4
7676.1
7676.1
7776.6
7776.8
7979.0
MaxMax °F
8282.4
8383.5
8383.2
8382.8
8281.5
8079.9
7878.2
7776.8
7776.6
7877.8
7878.3
8079.9
Warmest in March (82.8°F). Coldest in August (76.1°F). Comfortable for swimming year-round.
About Rarotonga
The South Pacific's Cook Islands centre on Rarotonga, a 67 km² volcanic island ringed by a near-continuous fringing reef and crowned by Te Manga, a 652-metre jagged spire over the dramatic interior. Muri Beach scatters four small motus off the southeast coast, wadeable at low tide, while Titikaveka Beach on the south shore guards the calmest lagoon and richest snorkelling. Sea temperatures sit between 25 and 28 °C year-round, peaking at 27–28 °C in February and March; the airport lies under 25 minutes from any point.






