January · Cook Islands
Best time to visit Rarotonga in January Weather, crowds & prices
Weather in Rarotonga in January
Average temperature 26°C, 184 mm of rain, about 29 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
7.5/10
Ranked #6 of 12 months
- Avg temp
- 26°C
- Rainfall
- 184 mm
- Humidity
- 83%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
January in Rarotonga scores 7.5/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 26°C, 184 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Rarotonga is a round island of green peaks and a turquoise lagoon, easy to circle by bus or scooter.
January in Rarotonga: strong conditions, 6th of 12
January averages 26°C (79°F) and humidity near 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Monthly rainfall reaches 184 mm — wet for this destination — but about 29 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 7.5/10 here, 6th of 12 months, against 9.3/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Plan for mid-season pricing, with crowds are moderate.
Flexible dates? November scores 1.8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Rarotonga in January?
- In January, Rarotonga averages 26°C, 184 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 7.5/10.
- Is January a good time to visit Rarotonga?
- January earns a 7.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Rarotonga in January?
- Expect about 184 mm of rain in January. Average humidity is 83% and there are about 29 days with 6+ hours of sunshine.
Curated in Rarotonga
Tickets & experiences
Things to do in Rarotonga
Rarotonga, Cook Islands. Live activities and tours from GetYourGuide, matched to this destination.