Cook Islands · SummerMonth summary
Cook Islands weather in August
✅ Good
🌡️ Temperature min / max
20°C – 22°C
🌧 Rainy days
36% of days
☀️ Sunshine
10.8h per day on average
🌊 🌊 Season
Summer
⭐ ⭐ Weather score
7.6/10
📅 📅 Best month
October (7.7/10)
Quick decision
Should you visit Cook Islands in August?
✅ Good
✅ Yes if: you want to explore cultural sites and local food.
❌ No if: you need guaranteed sunshine for photos or outdoor activities.
Our take: Favourable conditions in August (7.6/10). October scores higher but the gap is small.
By trip type
Cook Islands in August by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in August
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Summer in Cook Islands brings pleasant temperatures (22°C) and long sunny days (10.8h of sunshine). Expect rain on 36% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if October (7.7/10) remains theoretically better.
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All months for Cook Islands
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 23°C | 25°C | 58% | 6.5 | 12.2h | 7.4/10 |
| ⛅ February | 23°C | 25°C | 65% | 8.3 | 11.9h | 7.3/10 |
| ⛅ March | 23°C | 25°C | 66% | 6.9 | 11.5h | 7.2/10 |
| 🌦️ April | 23°C | 24°C | 51% | 4.8 | 11.0h | 7.4/10 |
| 🌦️ May | 22°C | 24°C | 56% | 5.8 | 10.3h | 7.2/10 |
| 🌤️ June | 21°C | 22°C | 37% | 2.7 | 10.3h | 7.5/10 |
| 🌤️ July | 20°C | 22°C | 43% | 3.8 | 10.2h | 7.4/10 |
| 🌤️ August | 20°C | 22°C | 36% | 3.0 | 10.8h | 7.6/10 |
| 🌤️ September | 20°C | 22°C | 39% | 3.0 | 11.0h | 7.5/10 |
| 🌤️ October | 21°C | 22°C | 37% | 3.0 | 11.7h | 7.7/10 |
| 🌤️ November | 21°C | 22°C | 38% | 3.2 | 12.8h | 7.7/10 |
| 🌦️ December | 22°C | 24°C | 61% | 6.5 | 12.3h | 7.3/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In August, Cook Islands averages 22°C, 36% rainy days and 10.8h of sunshine per day. Overall weather score: 7.6/10.
See methodology →
Comparison
August vs October (best month)
The best month is October (score 7.7/10). Difference:
- 🌡️ Max temperature : +0°C
- 🌧 Rainy days : +1%
- ☀️ Sunshine : +0.9h/day
FAQ
FAQ — Cook Islands in August
Is August a good time to visit Cook Islands?
August is an excellent time to visit Cook Islands (score 7.6/10). With 22°C, 10.8h of sunshine and 36% rain, conditions are very favourable.
What to do in Cook Islands in August?
With 22°C max and 10.8h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Cook Islands
Guided tours, skip-the-line tickets and local experiences.
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