Temperatures 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.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Phoenix in August. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of August
The month of August starts in Phoenix with hot temperatures, averaging around 42°C during the day and nights close to 31°C. There’s little chance of precipitation. The weather is mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-August
By mid-August, the average daytime temperature drops to around 41°C, with nights close to 30°C. Not much precipitation expected during this period. It’s mostly dry with sunshine. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of August
By the end of August, the average daytime temperature in Phoenix will be around 41°C, with nights close to 30°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Precipitation in August
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.
The precipitation chance averages 15% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in August for Phoenix. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Phoenix in August |
London | ||
|---|---|---|---|
 Average Temperature |
41°C | 22°C | |
 High Temp |
42°C | 24°C | |
| Low Temp |
38°C | 19°C | |
 Total Precipitation |
26 mm | 60 mm | |
| Rainy Days |
5 days | 10 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 time to be in Phoenix. The average temperature of 41°C this month is uncomfortably hot for a pleasant stay.
Temperature records for Phoenix in August
With 47°C, Phoenix hit the highest temperature in the last 10 years in August 2023. The lowest daytime temperature in this month was 31°C in 2014. The extreme night temperatures ranged from a low of 21°C to a high of 35°C.
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Daily Temperature in August in Phoenix
This chart shows the average daily temperatures, both day and night, for each day in August in Phoenix, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Phoenix
The chart below shows the average daily precipitation in August for Phoenix, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 5 days of rain 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 years.
Total Precipitation in August in Phoenix Over the Years
This chart shows the average precipitation in August in Phoenix, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Phoenix
Click on a specific day in August for detailed info on the typical 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
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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.
