Weather in Phoenix in August 2024
Average weather
Average temperature in Phoenix in August
The expected average maximum temperature in August is +104°F with a maximum of +111°F and a minimum of +77°F.
The average maximum temperature goes up 26% by the end of the month, compared with the beginning of the month, from +102°F to +111°F.
Is Phoenix warm or cold in August?
Phoenix is typically hot in August.
Maximum temperatures go down compared to the previous month from +108°F to +106°F. The minimum temperature also goes up from +86°F to +84°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
August is one of the warmest months in Phoenix, here is the comparison with other months:
Climate in Phoenix in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +108°F | +106°F | +102°F | ||||
| Min. temperature | ||||||
| +68°F | +70°F | +59°F | ||||
| Max. temperature | ||||||
| +122°F | +118°F | +115°F | ||||
| Rainfall | ||||||
| 38 mm | 52 mm | 31 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 1 m/s | ||||
| Humidity | ||||||
| 29% | 34% | 32% | ||||
| Air pressure | ||||||
| 1009 HPa | 1009 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 10 | 10 | 17 | ||||
| Cloudy days | ||||||
| 18 | 17 | 10 | ||||
| Rainy days | ||||||
| 3 | 4 | 3 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. It’s getting colder in August. From +108°F in the day, the average maximum temperature lowers to +106°F. Prepare for more rain. Average rainfall goes from 38 mm to 52 mm. Humidity rises from 29% to 34%. The average wind speed doesn’t change much during August, staying around 2 m/s. The amount of sunny days stay about the same, averaging 10 sunny days during the month.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Phoenix is gradually decreasing during August, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Phoenix?
Climate Change Over the Years
The climate in Phoenix in August has not changed that much over the last 43 years.
The average temperature was the lowest in 2014 (+106°F) and the highest in 2011 (+118°F). The driest year was 2002 with only 5 mm of rainfall, and the wettest year was 1982 with 189 mm.
FAQ
Is August a good time to visit Phoenix?
Can you sunbathe in Phoenix in August?
Is Phoenix rainy in August?
Is it sunny in Phoenix in August?
Other cities in USA
Monthly weather in Phoenix
Source of the data
For this page, we’ve looked at the typical weather in Phoenix, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.