May in Rakahanga averages 30°C (86°F) during the day and 27°C (81°F) at night. Quite a bit of rainfall is typical this month, with around 144 mm (5.7 in) on average. An umbrella is a good idea.
For Rakahanga itself, June, July, August, September and October generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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Pick a month to see the average temperature, rainfall and sunshine in Rakahanga - and find the best time to visit.
40-year average (1976-2025)
Based on our historical records, temperatures in Rakahanga typically stay consistent throughout May, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 27°C (81°F).
Browse day-by-day weather records for Rakahanga spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 20 years of weather observations in Rakahanga between 2006 and 2026, these are the recorded extremes.
Find out more about the weather in the Cook Islands and which places have the best travel conditions in this month. See all of the Cook Islands in May →
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).
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full Rakahanga climate overview or explore weather in the Cook Islands.
Where to go in May - average daytime high across popular destinations.
Penrhyn
30°C (86°F) Aitutaki
28°C (82°F) Arutanga28°C (82°F) Muri27°C (81°F) Avarua27°C (81°F) Arorangi27°C (81°F) Rarotonga27°C (81°F) Ngatangiia27°C (81°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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