Bay of Islands · AutumnMonth summary
Bay of Islands weather in September
✅ Good
🌡️ Temperature min / max
52°F – 63°F
🌧 Rainy days
42% of days
☀️ Sunshine
10.8h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.0/10
📅 📅 Best month
January (7.8/10)
Quick decision
Should you visit Bay of Islands in September?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: September is a good time to visit Bay of Islands. January remains slightly better (+0.8 pts).
By trip type
Bay of Islands in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
Autumn in Bay of Islands is often underrated: 17°F, golden light and declining crowds. An interesting window. Expect rain on 42% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. January (7.8/10) is significantly better if possible.
Browse by month
All months for Bay of Islands
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 63°F | 75°F | 39% | 0.1in | 13.1h | 7.8/10 |
| 🌤️ February | 64°F | 75°F | 45% | 0.1in | 12.6h | 7.6/10 |
| 🌤️ March | 63°F | 73°F | 39% | 0.1in | 11.1h | 7.5/10 |
| 🌤️ April | 59°F | 70°F | 41% | 0.2in | 10.3h | 7.2/10 |
| 🌤️ May | 55°F | 66°F | 34% | 0.1in | 9.3h | 7.1/10 |
| 🌦️ June | 52°F | 63°F | 42% | 0.2in | 8.7h | 6.7/10 |
| ⛅ July | 50°F | 61°F | 37% | 0.2in | 9.0h | 6.6/10 |
| 🌦️ August | 50°F | 61°F | 43% | 0.1in | 10.1h | 6.6/10 |
| 🌦️ September | 52°F | 63°F | 42% | 0.1in | 10.8h | 7.0/10 |
| 🌤️ October | 54°F | 64°F | 41% | 0.1in | 11.8h | 7.1/10 |
| 🌦️ November | 57°F | 68°F | 51% | 0.1in | 12.5h | 7.2/10 |
| 🌤️ December | 61°F | 72°F | 40% | 0.1in | 13.5h | 7.7/10 |
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, Bay of Islands averages 63°F, 42% rainy days and 10.8h of sunshine per day. Overall weather score: 7.0/10.
See methodology →
Comparison
September vs January (best month)
The best month is January (score 7.8/10). Difference:
- 🌡️ Max temperature : +7°F
- 🌧 Rainy days : -3%
- ☀️ Sunshine : +2.3h/day
FAQ
FAQ — Bay of Islands in September
Is September a good time to visit Bay of Islands?
September is an acceptable time for Bay of Islands (score 7.0/10). Conditions are decent but not optimal — consider January (7.8/10) if possible.
What to do in Bay of Islands in September?
With 63°F max and 10.8h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
Find a place to stay in Bay of Islands
Find places to stay in Bay of Islands in September
Search on Hotels.com
Activities & tours
Activities and tours in Bay of Islands
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Bay of Islands
Compare flights from all airlines.
Search flights
←
Explore also
Similar destinations in September
Chapada Diamantina🌍 Top destinations
Other top destinations in September
Puerto Vallarta
Banjul
TrinidadWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons