Best time to visit Avarua
The best time to visit Avarua is June and August, judged on twenty years of weather records and the events worth going for.
Avarua, Rarotonga, Cook Islands
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 26.4 °C / 80 °F | 25.1 °C / 77 °F | 240 mm / 9.5 in | neither best nor good |
| February | 26.8 °C / 80 °F | 25.5 °C / 78 °F | 203 mm / 8 in | neither best nor good |
| March | 26.9 °C / 80 °F | 25.6 °C / 78 °F | 204 mm / 8 in | neither best nor good |
| April | 26.3 °C / 79 °F | 25.1 °C / 77 °F | 147 mm / 5.8 in | neither best nor good |
| May | 25.4 °C / 78 °F | 24.2 °C / 76 °F | 146 mm / 5.7 in | good month |
| June | 24.4 °C / 76 °F | 23.2 °C / 74 °F | 73 mm / 2.9 in | best month |
| July | 23.6 °C / 74 °F | 22.5 °C / 73 °F | 86 mm / 3.4 in | good month |
| August | 23.2 °C / 74 °F | 22.1 °C / 72 °F | 83 mm / 3.3 in | best month |
| September | 23.5 °C / 74 °F | 22.4 °C / 72 °F | 77 mm / 3 in | good month |
| October | 23.9 °C / 75 °F | 22.8 °C / 73 °F | 98 mm / 3.9 in | good month |
| November | 24.7 °C / 76 °F | 23.7 °C / 75 °F | 97 mm / 3.8 in | good month |
| December | 25.6 °C / 78 °F | 24.5 °C / 76 °F | 194 mm / 7.6 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: good
- JJune: best
- JJuly: good
- AAugust: best
- SSeptember: good
- OOctober: good
- NNovember: good
- DDecember: neither
- Best
- June, August
- Good
- May, July, September–November
Why these months
May · good
In its favour: feels like (high) 26.8 °C / 80 °F, average daily high 25.4 °C / 78 °F, share of daylight that is sunny 81%, days with heavy rain 4.2 days.
Against: precipitation 146 mm / 5.7 in, wet days 15.2 days, average daily low 24.2 °C / 76 °F, relative humidity 78%.
June · best
In its favour: feels like (high) 24.7 °C / 76 °F, average daily high 24.4 °C / 76 °F, share of daylight that is sunny 85%, precipitation 73 mm / 2.9 in, days with heavy rain 1.9 days, wet days 9.1 days, relative humidity 74%.
Against: average daily low 23.2 °C / 74 °F.
July · good
In its favour: feels like (high) 23.8 °C / 75 °F, average daily high 23.6 °C / 74 °F, share of daylight that is sunny 83%, precipitation 86 mm / 3.4 in, days with heavy rain 2.5 days, wet days 10 days, relative humidity 74%.
Against: average daily low 22.5 °C / 73 °F.
August · best
In its favour: feels like (high) 23.3 °C / 74 °F, average daily high 23.2 °C / 74 °F, share of daylight that is sunny 82%, precipitation 83 mm / 3.3 in, days with heavy rain 2.5 days, wet days 8.9 days, relative humidity 74%.
Against: average daily low 22.1 °C / 72 °F.
September · good
In its favour: feels like (high) 24.1 °C / 75 °F, average daily high 23.5 °C / 74 °F, share of daylight that is sunny 84%, precipitation 77 mm / 3 in, days with heavy rain 2 days, wet days 9.2 days, relative humidity 76%.
Against: average daily low 22.4 °C / 72 °F.
October · good
In its favour: feels like (high) 24.9 °C / 77 °F, average daily high 23.9 °C / 75 °F, share of daylight that is sunny 84%, precipitation 98 mm / 3.9 in, days with heavy rain 2.2 days, wet days 8.8 days, relative humidity 76%.
Against: average daily low 22.8 °C / 73 °F.
November · good
In its favour: feels like (high) 26.8 °C / 80 °F, average daily high 24.7 °C / 76 °F, share of daylight that is sunny 86%, precipitation 97 mm / 3.8 in, days with heavy rain 2.8 days, wet days 11.2 days.
Against: average daily low 23.7 °C / 75 °F, relative humidity 78%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: good
- SSeptember: good
- OOctober: good
- NNovember: neither
- DDecember: neither
- Good
- August–October
Why these months
August · good
In its favour: average daily high 23.2 °C / 74 °F, precipitation 83 mm / 3.3 in, wet days 8.9 days, days with heavy rain 2.5 days, share of daylight that is sunny 82%, daylight per day 11.4 h, feels like (high) 23.3 °C / 74 °F, wind (daily max) 31 km/h / 19 mph.
Against: average daily low 22.1 °C / 72 °F.
September · good
In its favour: precipitation 77 mm / 3 in, average daily high 23.5 °C / 74 °F, days with heavy rain 2 days, wet days 9.2 days, share of daylight that is sunny 84%, daylight per day 12 h, feels like (high) 24.1 °C / 75 °F, wind (daily max) 31 km/h / 20 mph.
Against: average daily low 22.4 °C / 72 °F.
October · good
In its favour: average daily high 23.9 °C / 75 °F, precipitation 98 mm / 3.9 in, wet days 8.8 days, days with heavy rain 2.2 days, share of daylight that is sunny 84%, daylight per day 12.6 h, feels like (high) 24.9 °C / 77 °F, wind (daily max) 31 km/h / 19 mph.
Against: average daily low 22.8 °C / 73 °F.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Whakapapa, 3086 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 29.7 °C | 30.4 °C | 30.6 °C | 28.7 °C | 26.8 °C | 24.7 °C | 23.8 °C | 23.3 °C | 24.1 °C | 24.9 °C | 26.8 °C | 28.3 °C |
| Days with heavy rain | 7.1 days | 6.3 days | 5.9 days | 4 days | 4.2 days | 1.9 days | 2.5 days | 2.5 days | 2 days | 2.2 days | 2.8 days | 5.4 days |
| Time rain usually falls | 4 am | 1 am | 3 am | 4 pm | 12 pm | 8 pm | 2 am | 8 am | 12 am | 2 am | 6 am | 7 am |
| Sunshine per day | 10.6 h | 10.3 h | 10.3 h | 9.9 h | 9 h | 9.2 h | 9.1 h | 9.4 h | 10 h | 10.6 h | 11.3 h | 10.8 h |
| Relative humidity | 82% | 81% | 82% | 78% | 78% | 74% | 74% | 74% | 76% | 76% | 78% | 80% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 27.1 °C | 28.1 °C | 28.3 °C | 27.8 °C | 26.6 °C | 25.4 °C | 24.8 °C | 24.5 °C | 24.3 °C | 24.3 °C | 24.8 °C | 25.9 °C |
| Sea temperature (daily max) 2022–2025 | 27.3 °C | 28.3 °C | 28.4 °C | 27.9 °C | 26.7 °C | 25.4 °C | 24.9 °C | 24.6 °C | 24.4 °C | 24.5 °C | 24.9 °C | 26.1 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 7.7 µg/m³ | 6.8 µg/m³ | 6.3 µg/m³ | 8.3 µg/m³ | 8.6 µg/m³ | 7.7 µg/m³ | 8 µg/m³ | 9.5 µg/m³ | 10.2 µg/m³ | 10.9 µg/m³ | 9.8 µg/m³ | 7.4 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 9.5 µg/m³ | 8.5 µg/m³ | 7.9 µg/m³ | 10 µg/m³ | 10.6 µg/m³ | 9.7 µg/m³ | 9.8 µg/m³ | 11.6 µg/m³ | 12.3 µg/m³ | 13.2 µg/m³ | 11.4 µg/m³ | 9.3 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.