Phoenix weather in August 2025

Expect 39°C daytime maximum temperatures in the shade with on average 12 hours of sunshine per day in Phoenix in August. Check more long-term weather averages for Phoenix in August before you book your next holiday to Arizona in 2025/2026.

  • 39°C maximum daytime temperature in August in Phoenix39
    39°C max day temperature
  • 12 hours of sunshine per day
  • 5 days with some rainfall in August in Phoenix5
    5 days with some rainfall
  • 24°C minimum night-time temperature in August in Phoenix24
    24°C min night temperature
  • 13 hours of daylight per day in August in Phoenix13
    13 hours of daylight per day
  • Very high heat & humidity in August in PhoenixVH
    Very High heat & humidity
  • 32 mm monthly rainfall in August in Phoenix32
    32 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in August in Phoenix10
    10 (Very High) UV index

More about Phoenix

Phoenix by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Arizona

  • Save up to 20% on car hire worldwide with Enjoy Travel
  • Book car hire for destinations in the UK, Europe & beyond
  • Discount code cannot be combined with other promotions
Show discount codeShow discount code ******ENJ

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Enjoy Travel offers

The August weather guide for Arizona (Phoenix) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Arizona

How hot is it in Phoenix in August?

Daytime temperatures usually reach 39°C in Phoenix in August with very high heat and humidity, falling to 24°C at night.

How sunny is it in Phoenix in August?

There are normally 12 hours of bright sunshine each day in Phoenix in August - that's 86% of daylight hours.

Does it ever rain in Phoenix in August?

There are usually 5 days with some rain in Phoenix in August and the average monthly rainfall is 32mm.

Phoenix August sunrise & sunset times

Browse the sunrise and sunset times for Phoenix in August 2025. Select a month to view Phoenix sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:41 19:28
Saturday, 16th August 2025 05:52 19:13
Sunday, 31st August 2025 06:02 18:55

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^