September 12 is statistically one of the best days of the year in Avarua. With minimal rain risk (14%) and pleasant highs of 21°C, it's ideal for outdoor adventures. Avarua is seeing high visitor numbers, so iconic spots may be busier than usual.
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Essential Travel Info for Avarua
Currency
CKD
$ Cook Islands dollar
Language
English
+1 more
Driving
Left side
Avarua Weather Forecast for September 12
"Mild & Comfortable. Expect average highs of 21.3°C. 14% chance of rain."
What to Wear in Avarua in September
Based on historical data for September 12, Avarua typically experiences temperatures between 20.1°C and 21.3°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (14% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Avarua
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
21.3°C
Daytime Peak
Average Low
20.1°C
Nighttime Low
Feels Like
21.5°C
☀️ Feels accurate
Rain Chance
14%
Avg 0.8mm if it rains
Cloud Cover
57%
Light drizzle
Pressure
1017.3 hPa
Low volatility
Avarua Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 79% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 18:00
Type I-II
🔴 23 min to burn
Type III-IV
🟡 35 min to burn
Type V-VI
🟢 58 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
17.3°C
Noticeable
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Cook Islands
Flight Traffic
Busy
73/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~8
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Avarua
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:39
☀️ Noon
12:36
🌇 Sunset
18:34
⏱️ Daylight
11h 54m
Wind Speed
31.6 km/h
Fresh breeze
Sunshine
9.8 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Avarua
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Avarua
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Avarua on September 12 averages 21.3°C with a 14% precipitation probability. Wedding/Outdoor Event Score: 90/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Avarua Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (September 12) in other destinations
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📍 Is Avarua Worth Visiting on September 12?
Planning a trip to Avarua on September 12? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 21.3°C with a 14% historical precipitation risk.
✈️ Travel Logistics: Approximately 8 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Cook Islands, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 24.3°C (swimming pool). Wave conditions are generally surfers only with heights around 2.4m.
📊 Historical Extremes: The hottest September 12 recorded in the last 30 years saw temperatures hit 22.5°C in 2018, while the coldest dropped to 18.6°C in 2023.