September in Rakahanga brings high temperatures, with daytime highs of 29°C (84°F) and nights around 26°C (79°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August, September and October typically offer the best weather for Rakahanga.
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Pick a month to see the average temperature, rainfall and sunshine in Rakahanga - and find the best time to visit.
32-year average (1987-2025)
Based on our historical records, temperatures in Rakahanga typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°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 (2006-2026), these are the most extreme conditions recorded in Rakahanga.
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 September →
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 but pleasant conditions in Rakahanga in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags.
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 September - average daytime high across popular destinations.
Penrhyn
29°C (84°F) Aitutaki26°C (79°F) Arutanga26°C (79°F) Muri25°C (77°F) Avarua25°C (77°F) Arorangi25°C (77°F) Rarotonga25°C (77°F) Ngatangiia25°C (77°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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