Phoenix Weather in August
United States · 30-year monthly averages
🤔 Fair time to visit
August in Phoenix is extremely hot, with average daytime highs around 41°C (105°F) and nighttime lows near 29°C (84°F). Expect roughly 24mm of precipitation spread over about 3 rainy days, with little rainfall.
Avg high
41°C
105°F
Avg low
29°C
84°F
Rainfall
24mm
dry
Rainy days
3
days with ≥1mm
🎒 What to pack
- very light, loose clothing
- high-SPF sunscreen and a sun hat
- plan activities for early morning or evening
August vs the rest of the year
FAQ
- How hot is Phoenix in August?
- August in Phoenix is extremely hot, with average daytime highs around 41°C (105°F) and nighttime lows near 29°C (84°F). Expect roughly 24mm of precipitation spread over about 3 rainy days, with little rainfall.
- Does it rain a lot in Phoenix in August?
- Phoenix sees around 24mm of precipitation in August on average — dry by global standards.
- Is August a good time to visit Phoenix?
- August is a workable month to visit Phoenix, but expect some weather trade-offs.