Cape Cod · AutumnMonth summary
Cape Cod weather in September
✅ Good
🌡️ Temperature min / max
17°C – 22°C
🌧 Rainy days
34% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
July (8.3/10)
Quick decision
Should you visit Cape Cod 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: Favourable conditions in September (7.5/10). July scores higher but the gap is small.
By trip type
Cape Cod 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
Autumn in Cape Cod is often underrated: 22°C, golden light and declining crowds. An interesting window. Expect rain on 34% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (8.3/10) remains theoretically better.
Browse by month
All months for Cape Cod
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌨️ January | -2°C | 4°C | 36% | 4.0 | 7.6h | 4.0/10 |
| 🌦️ February | -1°C | 5°C | 39% | 3.8 | 8.1h | 4.0/10 |
| 🌦️ March | 2°C | 7°C | 35% | 3.9 | 9.7h | 4.3/10 |
| 🌦️ April | 5°C | 11°C | 39% | 3.7 | 10.6h | 5.0/10 |
| 🌦️ May | 10°C | 16°C | 42% | 3.5 | 11.7h | 7.0/10 |
| 🌤️ June | 16°C | 22°C | 33% | 2.6 | 13.3h | 7.8/10 |
| 🌤️ July | 20°C | 26°C | 31% | 2.7 | 13.0h | 8.3/10 |
| 🌤️ August | 20°C | 25°C | 28% | 2.4 | 12.7h | 8.2/10 |
| 🌤️ September | 17°C | 22°C | 34% | 3.9 | 11.0h | 7.5/10 |
| ⛅ October | 12°C | 17°C | 34% | 4.5 | 9.8h | 7.0/10 |
| 🌫️ November | 5°C | 11°C | 30% | 2.9 | 8.5h | 5.0/10 |
| 🌦️ December | 1°C | 6°C | 36% | 4.0 | 7.1h | 4.0/10 |
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, Cape Cod averages 22°C, 34% rainy days and 11.0h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 8.3/10). Difference:
- 🌡️ Max temperature : +4°C
- 🌧 Rainy days : -3%
- ☀️ Sunshine : +2.0h/day
FAQ
FAQ — Cape Cod in September
Is September a good time to visit Cape Cod?
September is an excellent time to visit Cape Cod (score 7.5/10). With 22°C, 11.0h of sunshine and 34% rain, conditions are very favourable.
What to do in Cape Cod in September?
With 22°C max and 11.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
Find a place to stay in Cape Cod
Find places to stay in Cape Cod in September
Search on Hotels.com
Activities & tours
Activities and tours in Cape Cod
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Cape Cod
Compare flights from all airlines.
Search flights
←
Explore also
Similar destinations in September
Toronto
Sarajevo🌍 Top destinations
Other top destinations in September
Santiago
Guanajuato
Marsa Alam
TrinidadWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons