Phoenix · AutumnMonth summary
Phoenix weather in September
✅ Good
🌡️ Temperature min / max
24°C – 38°C
🌧 Rainy days
11% of days
☀️ Sunshine
11.7h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
6.9/10
📅 📅 Best month
April (8.8/10)
Quick decision
Should you visit Phoenix in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 38°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Not the best window: 11% rain risk and 11.7h of sunshine. April is much safer.
By trip type
Phoenix in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
🎯 Shoulder season — good value with reasonable accommodation prices Autumn marks the end of peak season in Phoenix. Temperatures drop (38°C) and rain returns (11% of days). Rain risk remains low (11% of days), leaving good room for outdoor activities. Not the best window, but acceptable if dates are constrained. April (8.8/10) is significantly better if possible.
Browse by month
All months for Phoenix
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 6°C | 18°C | 12% | 1.0 | 9.3h | 7.3/10 |
| 🌤️ February | 8°C | 22°C | 11% | 1.0 | 10.4h | 8.2/10 |
| 🌤️ March | 10°C | 24°C | 11% | 1.0 | 11.1h | 8.5/10 |
| ☀️ April | 15°C | 31°C | 3% | 0.1 | 12.8h | 8.8/10 |
| ☀️ May | 20°C | 35°C | 2% | 0.1 | 13.0h | 7.5/10 |
| 🥵 June | 26°C | 41°C | 3% | 0.2 | 13.3h | 6.9/10 |
| 🥵 July | 30°C | 42°C | 16% | 1.6 | 13.0h | 3.9/10 |
| 🥵 August | 28°C | 40°C | 15% | 1.2 | 12.9h | 6.9/10 |
| 🥵 September | 24°C | 38°C | 11% | 1.0 | 11.7h | 6.9/10 |
| ☀️ October | 18°C | 32°C | 6% | 1.1 | 10.8h | 8.2/10 |
| ☀️ November | 11°C | 25°C | 7% | 0.7 | 9.9h | 8.6/10 |
| 🌤️ December | 6°C | 20°C | 13% | 1.1 | 9.1h | 7.6/10 |
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, Phoenix averages 38°C, 11% rainy days and 11.7h of sunshine per day. Overall weather score: 6.9/10.
See methodology →
Comparison
September vs April (best month)
The best month is April (score 8.8/10). Difference:
- 🌡️ Max temperature : -7°C
- 🌧 Rainy days : -8%
- ☀️ Sunshine : +1.1h/day
FAQ
FAQ — Phoenix in September
Is September a good time to visit Phoenix?
September is an acceptable time for Phoenix (score 6.9/10). Conditions are decent but not optimal — consider April (8.8/10) if possible.
Is it too hot in Phoenix in September?
Temperatures reach 38°C. The heat is extreme — limit activities to cooler hours. Sunshine: 11.7h/day.
Accommodation
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Activities & tours
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