August weather forecast
Mesa, AZ

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The scenic city of Mesa in Arizona, with a view of the famous well-manicured golf course near the Red Mountain range
The scenic city of Mesa in Arizona, with a view of the famous well-manicured golf course near the Red Mountain range

Weather in August

Continuing the trend of extreme summer heat, August's weather in Mesa, Arizona remains undeterred, maintaining the city's desert reputation. A heightened rise in the number of daylight hours contributes to prolonged periods of intense heat. Interestingly enough, amidst the sweltering temperatures, cloud coverage sees an upward trend; however, it does little to offset the heat. The wind speed continues its steady decline as summer gradually draws to a close. Regardless, a heat-dominated climate remains with temperatures peaking at a high of 100.9°F (38.3°C) and the minimum still warm at 83.8°F (28.8°C).

Temperature

The ushering in of August brings an average high-temperature of a still sweltering 100.9°F (38.3°C), closely mirroring the 101.8°F (38.8°C) of July. During the month of August, the nighttime temperature falls to an average of 83.8°F (28.8°C).

Humidity

In Mesa, the average relative humidity in August is 32%.

Rainfall

In Mesa, in August, during 8.8 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, there are 60.2 rainfall days, and 7.91" (201mm) of precipitation is accumulated.

Daylight

The average length of the day in August is 13h and 21min.
On the first day of August, sunrise is at 5:40 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 6:53 pm MST.

Sunshine

In Mesa, the average sunshine in August is 12.1h.

UV index

June through August, with an average maximum UV index of 8, are months with the highest UV index in Mesa. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 8 in August suggests the following recommendations:
Always remain cautious. Unprotected skin and eyes are prone to swift harm. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

How hot is it in Mesa in August?

An average high-temperature, in August, in Mesa, is 100.9°F (38.3°C) and the average low-temperature is 83.8°F (28.8°C).

What is the average humidity in August in Mesa?

The average relative humidity in August in Mesa is 32%.

How much does it rain in Mesa in August?

In August, in Mesa, the rain falls for 8.8 days. Throughout August, 0.79" (20mm) of precipitation is accumulated.

How many hours of daylight does Mesa have in August?

The average day length in August in Mesa, Arizona, is 13h and 21min.

When are sunrise and sunset in August in Mesa?

On the first day of August, sunrise is at 5:40 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 6:53 pm MST.

How many hours of sunshine does Mesa have in August?

The average sunshine duration in August in Mesa, Arizona, is 12.1h.

When is the highest UV index in Mesa?

The months with the highest UV index are June through August, with an average maximum UV index of 8.

How high is the UV index in August in Mesa?

In Mesa, Arizona, the average daily maximum UV index in August is 8. A UV Index reading of 8 to 10 represents a very high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Mesa, AZ

Average temperature in August - Mesa, AZ
  • Average high temperature in August: 100.9°F

The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in August: 83.8°F

The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).

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Average pressure in August
Mesa, AZ

Average pressure in August - Mesa, AZ
  • Average pressure in August: 29.88"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

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Average wind speed in August
Mesa, AZ

Average wind speed in August - Mesa, AZ
  • Average wind speed in August: 5mph

The windiest months (with the highest average wind speed) are April and May (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).

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Average humidity in August
Mesa, AZ

Average humidity in August - Mesa, AZ
  • Average humidity in August: 32%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (17%).

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Average rainfall in August
Mesa, AZ

Average rainfall in August - Mesa, AZ
  • Average rainfall in August: 0.79"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in August
Mesa, AZ

Average rainfall days in August - Mesa, AZ
  • Average rainfall days in August: 8.8 days

The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is June (1.2 days).

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Average daylight in August /
Average sunshine in August
Mesa, AZ

Average daylight in August / Average sunshine in August - Mesa, AZ
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 12h and 1min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in August
Mesa, AZ

Average sunshine days in August - Mesa, AZ
  • Average sunshine days in August: 18.9 days

The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.6 days).

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Average UV index in August
Mesa, AZ

Average UV index in August - Mesa, AZ
  • Average UV index in August: 8

The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in August
Mesa, AZ

Average cloud cover in August - Mesa, AZ
  • Average cloud cover in August: 12

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in August
Mesa, AZ

Average visibility in August - Mesa, AZ
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Mesa, Arizona, USA

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