Avarua in December sees high daytime temperatures of 27°C (81°F) and nighttime lows of 25°C (77°F). As part of the rainy season, showers are frequent and often heavy. Budget around 200 mm (7.9 in) of rainfall for the month.
December in Avarua has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
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Pick a month to see the average temperature, rainfall and sunshine in Avarua - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Avarua typically stay consistent throughout December, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 23°C (73°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Avarua spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Avarua from 2014 through 2025.
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 December →
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 temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Avarua climate overview or explore weather in the Cook Islands.
Where to go in December - average daytime high across popular destinations.
Penrhyn
29°C (84°F) Aitutaki28°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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