August weather forecast
Yuma, AZ

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Arizona/California border with the Colorado River in Yuma, Arizona
Arizona/California border with the Colorado River in Yuma, Arizona

Weather in August

Following the peak in July, August sees a minute reduction in both temperatures and daylight hours in Yuma. However, even with this slight reprieve, people should be mindful of the heat and remember to drink plenty of fluids. This month has one of the highest average low temperatures at 86.4°F (30.2°C), sustaining the warm summer nights. August evenings are illuminated by dramatic sunset colors, offering enchanting desert vistas. The persisting warmth and consistent hours of sunlight continue to emphasize Yuma’s summer allure.

Temperature

Yuma observes a minor difference in average high-temperatures between July's 105.3°F (40.7°C) and August's 105.1°F (40.6°C). Yuma reports a consistent average low-temperature of 86.4°F (30.2°C) throughout August nights.

Humidity

In Yuma, the average relative humidity in August is 31%.

Rainfall

In Yuma, in August, during 4.1 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Yuma, Arizona, during the entire year, the rain falls for 31.6 days and collects up to 2.8" (71mm) of precipitation.

Daylight

In August, the average length of the day is 13h and 19min.
On the first day of the month, sunrise is at 5:53 am and sunset at 7:36 pm. On the last day of August, sunrise is at 6:13 am and sunset at 7:03 pm MST.

Sunshine

In Yuma, the average sunshine in August is 10.7h.

UV index

June through September, with an average maximum UV index of 8, are months with the highest UV index in Yuma. A UV Index value of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In August, a daily maximum UV index of 8 leads to the following instructions:
Always prioritize safety measures. Rapid harm can befall unprotected skin and eyes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

How hot does it get in Yuma in August?

The average high-temperature, in August, in Yuma, is 105.1°F (40.6°C), while the average low-temperature is 86.4°F (30.2°C).

What is the average humidity in August in Yuma?

The average relative humidity in August in Yuma is 31%.

How many days does it rain in August in Yuma?

In Yuma, Arizona, during August, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation.

What is the average length of the day in August in Yuma?

The average day length in August is 13h and 19min.

When is the sunrise / sunset in August in Yuma?

In August, on the first day of the month, sunrise is at 5:53 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:03 pm MST.

How many hours of sunshine does Yuma have in August?

In Yuma, the average sunshine duration in August is 10.7h.

What are the months with the highest UV index in Yuma?

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

What is the UV index intensity in August in Yuma?

In August, the average daily maximum UV index in Yuma is 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from unsafe 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
Yuma, AZ

Average temperature in August - Yuma, AZ
  • Average high temperature in August: 105.1°F

The warmest month (with the highest average high temperature) is July (105.3°F).
The month with the lowest average high temperature is December (66°F).

  • Average low temperature in August: 86.4°F

The month with the highest average low temperature is August (86.4°F).
The coldest month (with the lowest average low temperature) is December (50.5°F).

Average pressure in August
Yuma, AZ

Average pressure in August - Yuma, AZ
  • Average pressure in August: 29.77"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

Average wind speed in August
Yuma, AZ

Average wind speed in August - Yuma, AZ
  • Average wind speed in August: 8mph

The windiest months (with the highest average wind speed) are April and July (8.5mph).
The calmest month (with the lowest average wind speed) is November (6.6mph).

Average humidity in August
Yuma, AZ

Average humidity in August - Yuma, AZ
  • Average humidity in August: 31%

The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (22%).

Average rainfall in August
Yuma, AZ

Average rainfall in August - Yuma, AZ
  • Average rainfall in August: 0.28"

The wettest months (with the highest rainfall) are July and September (0.39").
The driest months (with the least rainfall) are May and June (0.04").

Average rainfall days in August
Yuma, AZ

Average rainfall days in August - Yuma, AZ
  • Average rainfall days in August: 4.1 days

The month with the highest number of rainy days is July (5.8 days).
The month with the least rainy days is May (0.8 days).

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

Average daylight in August / Average sunshine in August - Yuma, 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: 10h and 4min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).

Average sunshine days in August
Yuma, AZ

Average sunshine days in August - Yuma, AZ
  • Average sunshine days in August: 22.8 days

The month with the most sunshine days is May (30.2 days).
The month with the least sunshine days is July (22.1 days).

Average UV index in August
Yuma, AZ

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

The months with the highest UV index are June, July, August and September (UV index 8).
The months with the lowest UV index are November and December (UV index 4).

Average cloud cover in August
Yuma, AZ

Average cloud cover in August - Yuma, AZ
  • Average cloud cover in August: 8

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in August
Yuma, AZ

Average visibility in August - Yuma, 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).

Yuma, Arizona, USA

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