Phoenix Weather in August: Climate, Temperature & Travel Tips
Avg 34.6°C · 24mm rain — August is summer in Phoenix.
- Avg high
- 40.6 °C
- Avg low
- 28.6 °C
- Avg
- 34.6 °C
- Precipitation
- 24 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
August in Phoenix, United States brings summer conditions: average temperature 34.6°C, average high 40.6°C, average low 28.6°C. Monthly rainfall averages 24mm, making it a drier time of year.
Plan outdoor activities around midday heat with shade and frequent hydration.
What to Pack
- Lightweight breathable clothing; sun hat
- Sunscreen and ample hydration
Best Things to Do
- Visit outdoor sights in early morning or late afternoon
- Air-conditioned museums and galleries
- Pool or waterfront activities
Pros and Cons of Visiting in August
Pros:
- Low rainfall — minimal disruption to outdoor plans
Cons:
- Hot weather may limit midday outdoor activities
- Peak season — expect higher prices and more crowds
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 July 35.2°C
- 2 August 34.6°C
- 3 June 33.0°C
- 1 December 13.2°C
- 2 January 13.8°C
- 3 February 15.6°C
FAQ
01 What is the average temperature in Phoenix in August? +
The average is 34.6°C, with a high of 41°C and a low of 29°C.
02 What is Phoenix like to visit in August? +
It is summer in Phoenix, which is hot — plan around midday heat.
03 Does it rain often in Phoenix during August? +
Average rainfall is 24mm, which is low.
04 What should I pack for Phoenix in August? +
Lightweight breathable clothing; sun hat; Sunscreen and ample hydration.
05 Is August a peak travel season for Phoenix? +
Generally yes — book accommodations and flights well in advance.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17