Phoenix in August
5.3out of 10
Not the best time
Very hot: daytime highs around 41°C. Some rain: about 5 rainy days.
41°CAvg high
28°CAvg low
5Rainy days (29 mm)
13:15 hDaylight
05:55Sunrise · 19:10 Sunset
Why this score
- Very hot: daytime highs around 41°C
- Some rain: about 5 rainy days
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rainfall in August is fairly consistent from year to year (2.5 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 20°C | 6°C | 32 mm | 4 | – | – | 8.2 |
| February | 22°C | 8°C | 37 mm | 4 | – | – | 8.5 |
| March | 26°C | 11°C | 26 mm | 3 | – | – | 8.7 |
| April | 30°C | 14°C | 8 mm | 1 | – | – | 8.6 |
| May | 35°C | 19°C | 4 mm | 1 | – | – | 7.3 |
| June | 40°C | 25°C | 2 mm | 0 | – | – | 5.8 |
| July | 42°C | 29°C | 19 mm | 3 | – | – | 5.1 |
| August | 41°C | 28°C | 29 mm | 5 | – | – | 5.3 |
| September | 38°C | 24°C | 25 mm | 3 | – | – | 6.2 |
| October | 32°C | 17°C | 20 mm | 2 | – | – | 8.0 |
| November | 25°C | 10°C | 17 mm | 2 | – | – | 8.8 |
| December | 19°C | 6°C | 29 mm | 3 | – | – | 8.1 |
Frequently asked questions
How hot is Phoenix in August?
Daytime highs average 41°C and nights about 28°C.
When is the best time to visit Phoenix?
The best months are November, March, April, February.