Rarotonga weather
Loading live data…Latest for Rarotonga: European (ECMWF): 20° Clear · American (NOAA GFS): 19° Partly cloudy · German (DWD ICON): 20° Mainly clear.
The weather map: all three models at once
European, American, German side by side around Rarotonga and nearby towns.Live rain radar →Hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
10-day forecast, out to 14 days
where the models agree, and where they splitHeading to Rarotonga? Rarotonga, Cook Islands, sits at 21.2°S in a tropical climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast Rarotonga right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a beach trip the rain and wind columns below matter most - that is what makes or breaks a day by the sea.
Best time to visit Rarotonga
The most comfortable time to visit Rarotonga is usually January, February, March and May, when daytime highs sit in the pleasant 24-33°C range and the heaviest April rain is behind you.
Rarotonga weather by month
what to expect in Rarotonga through the year, 1991-2020 averagesHere is Rarotonga's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Rarotonga by season.
Rarotonga compared with Sydney
30-year averages: daytime highs month by month, rain and sunlightWarmer through the year
average daytime high: Rarotonga 23°C, Sydney 23°C
Rain over a year
Rarotonga 3,986 mm, Sydney 1,148 mm
Sunlight vs a clear sky
solar energy reaching the ground as a share of a cloudless day, averaged over the year (not sunshine hours)
On 30-year averages Rarotonga runs 0°C warmer than Sydney, with every month between −4°C and +4°C. Over a year it gets 247% more rain than Sydney.
Month by month in numbers
| Month | Rarotonga | Sydney | Difference | Sunlight, Rarotonga | Sunlight, Sydney |
|---|---|---|---|---|---|
| January | 24°C | 27°C | −3°C | 76% | 75% |
| February | 25°C | 28°C | −3°C | 77% | 73% |
| March | 26°C | 26°C | ±0°C | 78% | 75% |
| April | 25°C | 24°C | +1°C | 77% | 77% |
| May | 24°C | 22°C | +2°C | 75% | 79% |
| June | 22°C | 18°C | +4°C | 77% | 74% |
| July | 22°C | 18°C | +4°C | 77% | 80% |
| August | 21°C | 20°C | +1°C | 77% | 82% |
| September | 21°C | 22°C | −1°C | 78% | 82% |
| October | 21°C | 24°C | −3°C | 78% | 77% |
| November | 22°C | 25°C | −3°C | 76% | 74% |
| December | 23°C | 27°C | −4°C | 75% | 74% |
Daytime highs and lows on this page are 1991-2020 averages. Rarotonga: no weather station within 30 km at a similar height, so lows are ERA5 point values for 2023-2024, corrected month by month by NASA POWER's difference between those two years and 1991-2020, and highs are the uncorrected ERA5 values, which tested closer to station normals; rain is the CHELSA 1981-2010 climatology on a 1 km grid. Sydney: station normals from Sydney Observatory Hill (WMO), rain included. Sunlight vs a clear sky is NASA POWER's long-term average of the solar energy reaching the ground as a share of a cloudless day; it compares cloudiness and is not a count of sunshine hours. Sydney stands in for Australia here; other cities have their own climate tables.