Weather in Avarua in July
Cook Islands · 20-year averages, July
Prime time. July is about as good as Avarua gets. Highs average 23.8 °C, lows 22.9 °C, and rain falls on 12 days — nothing in the month is working against you.
July ranks 3 of 12 in Avarua. Only June scores clearly higher, and the difference is small enough to be settled by price rather than weather.
Rain on 12 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.
What the averages hide
Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average July reaches 30 °C; the day barely swings — 0.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 26.3 °C and the coldest night fell to 19.6 °C, and the wettest single day dropped 57 mm — roughly 74% of the month's rain in one day.
July is moderately variable: 26 mm in the driest year against 190 mm in the wettest, around an average of 77 mm. Roughly two Julys in three land near that average, and the third does something else entirely.
Wind sits around 20.1 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 78%, high enough to notice on the warm days without dominating them.
How July sits in the year
Temperatures hold steady either side: 24.5 °C in June, 23.8 here, 23.5 in August. Nothing about the timing within the month matters much.
Daylight in July
July sits at the dark end of Avarua's year — 10.9 hours of daylight against 13.4 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.
Sea temperature
The sea sits at about 25.2 °C in July — warm enough to stay in as long as you like. The sea peaks at 28.1 °C in March and bottoms out at 24.8 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.
How busy it gets
Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, September is the trade worth considering — 6 points weaker on weather, and materially quieter.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
July in Avarua versus nearby
If Avarua is one option among several, the nearby comparison is worth making. Vaitape is close enough to be a coin toss — 2.8 °C warmer, 2 days less rain. Faaa is close enough to be a coin toss — 2.1 °C warmer, the same number of rain days.
So: July is effectively as good as it gets here — 3 points behind June, which is inside the margin where the weather stops being the deciding factor and price starts being it.
Every month in Avarua
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|
| January | 26.7 | 26 | 19 | 195 | 82 | 13.3 | 27.6 | 63 |
| February | 27.1 | 26.3 | 20 | 202 | 81 | 12.8 | 27.9 | 64 |
| March | 27.1 | 26.4 | 22 | 198 | 81 | 12.2 | 28.1 | 64 |
| April | 26.6 | 25.9 | 17 | 166 | 80 | 11.6 | 27.7 | 65 |
| May | 25.6 | 24.8 | 17 | 150 | 79 | 11.1 | 26.7 | 66 |
| June | 24.5 | 23.7 | 11 | 62 | 78 | 10.8 | 25.9 | 81 |
| July | 23.8 | 22.9 | 12 | 77 | 78 | 10.9 | 25.2 | 78 |
| August | 23.5 | 22.5 | 12 | 63 | 78 | 11.4 | 24.8 | 79 |
| September | 23.8 | 22.9 | 14 | 83 | 79 | 11.9 | 25 | 75 |
| October | 24.2 | 23.4 | 15 | 95 | 79 | 12.5 | 25.3 | 73 |
| November | 25.1 | 24.3 | 16 | 144 | 81 | 13.1 | 26 | 69 |
| December | 25.9 | 25.2 | 18 | 175 | 82 | 13.4 | 26.9 | 65 |
See all twelve months in Avarua, or where else to go in July.
Planning the rest of the trip
- Flight time to Avarua how long you are actually in the air
- Avarua time zone and the difference from home
- Days until your trip count down to the departure date
- Gyms & clubs in Avarua keep training while you are there