Rarotonga Weather in May
May in Rarotonga averages 27°C (81°F) during the day and 24°C (75°F) at night. Quite a bit of rainfall is typical this month, with around 136 mm (5.4 in) on average. An umbrella is a good idea.
Rainfall in Rarotonga in May
Typically, about 12 days will experience rainfall, with an average of 136 mm (5.4 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Rarotonga in May
In May, Rarotonga sees high temperatures, with highs of 27°C (81°F). Nights drop to around 24°C (75°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Rarotonga in May
The city usually sees around 162 hours of sunlight, indicating a moderately sunny period.
Wind Speed in Rarotonga in May
Wind speeds average 4 m/s (8 knots) during May. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, August, September and October typically offer the best weather for Rarotonga.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Rarotonga's climate page.
Rarotonga Temperature in May
Min Temperature
24°C (75°F)
Max Temperature
27°C (81°F)
Chance of Rain
39%
Precipitation
136 mm (5.4 in)
Rainy days
12 days
Humidity
83%
Windspeed
4 m/s (8 knots)
Sunshine
162 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Rarotonga typically stay consistent throughout May, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Rarotonga in May
Browse day-by-day weather records for Rarotonga spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rarotonga historical weather extremes in May
Based on 25 years of weather observations in Rarotonga between 2000 and 2025, these are the recorded extremes.
- Rarotonga recorded its highest May temperature of 32°C (90°F) on May 6, 2008.
- On May 18, 2002, Rarotonga saw its coldest May day with temperatures maxing out at 22°C (72°F).
- The lowest overnight temperature recorded in May was 16°C (61°F) (May 17, 2018).
Best Places in the Cook Islands in May
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
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tolerable
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What to Wear in Rarotonga in May
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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Rarotonga in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Rarotonga's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Rarotonga climate overview or explore weather in the Cook Islands.
