United StatesAverage weather for Phoenix in August
It's hot in August in Phoenix with an average temperature of 41°C. Temperatures this month range from a low of 38°C to a high of 42°C. At night, you can expect temperatures between 28°C and 31°C.
Start of August
The month of August starts in Phoenix with hot temps, averaging around 42°C during the day and nights around 31°C. There’s little chance of precipitation. The weather’s mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid August
By mid-August, daytime temps drop to around 41°C, with nights around 30°C. Not much precipitation expected during this period. It’s mostly dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of August
By the end of August, the average daytime temperature in Phoenix is around 41°C, while nighttime temps are about 30°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In August, there is an average of 26 mm of precipitation, spread over 5 days. The wind speed is around 4 Bft, mostly coming from the South.
Phoenix in August |
New York | ||
|---|---|---|---|
 Average temperature |
41°C | 30°C | |
 Max. temperature |
42°C | 31°C | |
| Min. temperature |
38°C | -5°C | |
 Total precipitation |
26 mm | 79 mm | |
| Rainy days |
5 days | 13 days | |
July
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Phoenix?
August isn’t a good month to be in Phoenix. The average temperature of 41°C this month is uncomfortably hot for a comfortable stay.
Temperature records
With 47°C in 2023, Phoenix reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 31°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 21°C to a highest value of 35°C.
Check out the climate of Phoenix for all months and discover the best travel time
Daily Temperature in August in Phoenix
This chart shows the average daily high and low temperatures in August for Phoenix, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Phoenix
The chart below shows the average daily precipitation in August for Phoenix, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 5 days of precipitation in Phoenix.
Daily UV index in August in Phoenix
This chart shows the average daily UV index in August in Phoenix, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Phoenix over the years
This chart shows the average temperature in August in Phoenix, measured in degrees Celsius, over the past few years.
Total precipitation in August in Phoenix over the years
This chart shows the average precipitation in August in Phoenix, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Phoenix
Click on any day in August to get detailed info about the usual weather on that day in Phoenix. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Phoenix
The weather in August in Phoenix is rated 0 out of 5 stars by 1 visitor. Have you been to Phoenix? Share your weather experience to help other visitors.
Have you been to Phoenix in August?
Share your weather experience in August in Phoenix.
Average weather in Phoenix by month
Click on a month below to see detailed weather info for Phoenix. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
