Rarotonga · AutumnMonth summary
Rarotonga weather in September
✅ Good
🌡️ Temperature min / max
20°C – 22°C
🌧 Rainy days
39% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
October (7.7/10)
Quick decision
Should you visit Rarotonga in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 22°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: September is a good time to visit Rarotonga. October remains slightly better (+0.2 pts).
By trip type
Rarotonga in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Autumn in Rarotonga is often underrated: 22°C, golden light and declining crowds. An interesting window. Expect rain on 39% 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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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 September, Rarotonga averages 22°C, 39% rainy days and 11.0h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
September vs October (best month)
The best month is October (score 7.7/10). Difference:
- 🌡️ Max temperature : +0°C
- 🌧 Rainy days : -2%
- ☀️ Sunshine : +0.7h/day
FAQ
FAQ — Rarotonga in September
Is September a good time to visit Rarotonga?
September is an excellent time to visit Rarotonga (score 7.5/10). With 22°C, 11.0h of sunshine and 39% rain, conditions are very favourable.
What to do in Rarotonga in September?
With 22°C max and 11.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
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