Cook Islands · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Rarotonga are June, July and August, when daytime temperatures are agreeable and rainfall is relatively low.
Rarotonga sees its warmest weather in February, when daytime highs average around 29°C, and its coolest in July (around 25°C).
Annual precipitation totals roughly 2206mm — January is typically the wettest month (~256mm) and July the driest (~112mm).
A distinctly wetter period runs from January to December — worth planning around if you prefer dry days.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 61 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 29° / 23°C | 256mm | 🤔 Fair |
| February | 29° / 23°C | 229mm | 🤔 Fair |
| March | 29° / 23°C | 219mm | 🤔 Fair |
| April | 28° / 23°C | 246mm | 🤔 Fair |
| May | 26° / 21°C | 199mm | 🤔 Fair |
| June | 25° / 20°C | 128mm | 👍 Good |
| July | 25° / 19°C | 112mm | 🌟 Great |
| August | 25° / 20°C | 141mm | 👍 Good |
| September | 26° / 20°C | 138mm | 👍 Good |
| October | 26° / 21°C | 121mm | 👍 Good |
| November | 27° / 22°C | 171mm | 🤔 Fair |
| December | 28° / 22°C | 246mm | 🤔 Fair |
January in Rarotonga is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 23°C (74°F). Expect roughly 256mm of precipitation, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
February in Rarotonga is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 23°C (74°F). Expect roughly 229mm of precipitation, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
March in Rarotonga is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 23°C (74°F). Expect roughly 219mm of precipitation, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
April in Rarotonga is warm, with average daytime highs around 28°C (83°F) and nighttime lows near 23°C (73°F). Expect roughly 246mm of precipitation, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
May in Rarotonga is warm, with average daytime highs around 26°C (80°F) and nighttime lows near 21°C (70°F). Expect roughly 199mm of precipitation, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
June in Rarotonga is warm, with average daytime highs around 25°C (78°F) and nighttime lows near 20°C (68°F). Expect roughly 128mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
July in Rarotonga is pleasantly warm, with average daytime highs around 25°C (76°F) and nighttime lows near 19°C (67°F). Expect roughly 112mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
August in Rarotonga is pleasantly warm, with average daytime highs around 25°C (77°F) and nighttime lows near 20°C (67°F). Expect roughly 141mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
September in Rarotonga is warm, with average daytime highs around 26°C (78°F) and nighttime lows near 20°C (68°F). Expect roughly 138mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
October in Rarotonga is warm, with average daytime highs around 26°C (79°F) and nighttime lows near 21°C (69°F). Expect roughly 121mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
November in Rarotonga is warm, with average daytime highs around 27°C (81°F) and nighttime lows near 22°C (71°F). Expect roughly 171mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
December in Rarotonga is warm, with average daytime highs around 28°C (82°F) and nighttime lows near 22°C (72°F). Expect roughly 246mm of precipitation, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket