Birmingham
Alabama, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Birmingham, AL

The colorful evening sky in Birmingham City, Alabama
The colorful evening sky in Birmingham City, Alabama
The last month of the summer, August, is another tropical month in Birmingham, Alabama, with average temperature fluctuating between 70.9°F (21.6°C) and 90.7°F (32.6°C).

Temperature

In August, the average high-temperature is almost the same as in July - a still hot 90.7°F (32.6°C). The average low-temperature, in Birmingham, is 70.9°F (21.6°C).

Heat index

The average heat index in August is estimated at a blistering 111.4°F (44.1°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like pregnancy, wind, clothing, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

With an average relative humidity of 74.6%, August is the most humid month.

Rainfall

In Birmingham, during August, the rain falls for 9.6 days and regularly aggregates up to 3.9" (99.8mm) of precipitation. Throughout the year, there are 116.8 rainfall days, and 53.7" (1364.5mm) of precipitation is accumulated.

Snowfall

Throughout the year, 1.6" (40.5mm) of snow is accumulated.

Daylight

In Birmingham, the average length of the day is 13.4h.

Sunshine

The average sunshine in Birmingham is 8.4h.

UV index

Months with the highest UV index in Birmingham are June through August, with an average maximum UV index of 10. A UV Index reading of 8 to 10 represents a very high health vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 10 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the temperature in August in Birmingham?

The average high-temperature, in August, in Birmingham, is 90.7°F (32.6°C), while the average low-temperature is 70.9°F (21.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that factores the actual air temperature with the relative humidity, in August is estimated at 111.4°F (44.1°C).

What is the most humid month in Birmingham?

The most humid month in Birmingham, Alabama, is August, with an average relative humidity of 74.6%.

What is the average humidity in August in Birmingham?

In August, the average relative humidity in Birmingham is 74.6%.

How many days does it rain in August in Birmingham?

In Birmingham, Alabama, in August, during 9.6 rainfall days, 3.9" (99.8mm) of precipitation is typically accumulated.

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

In Birmingham, Alabama, the average length of the day in August is 13.4h.

How long on average sun shines in August in Birmingham?

In August, the average sunshine is 8.4h.

When is the highest UV index in Birmingham?

Months with the highest UV index in Birmingham are June through August, with an average maximum UV index of 10.

What is the UV index intensity in August in Birmingham?

In August, the average daily maximum UV index in Birmingham, Alabama, is 10. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in August - Birmingham, AL
  • Average high temperature in August: 32.6°C

The warmest month (with the highest average high temperature) is July (32.7°C).
The month with the lowest average high temperature is January (12.1°C).

  • Average low temperature in August: 21.6°C

The month with the highest average low temperature is July (21.9°C).
The coldest month (with the lowest average low temperature) is January (1°C).

Average humidity in August - Birmingham, AL
  • Average humidity in August: 74.6%

The month with the highest relative humidity is August (74.6%).
The month with the lowest relative humidity is March (64.2%).

Average rainfall in August - Birmingham, AL
  • Average rainfall in August: 99.8mm

The wettest month (with the highest rainfall) is March (132.8mm).
The driest month (with the lowest rainfall) is October (87.4mm).

Average rainfall days in August - Birmingham, AL
  • Average rainfall days in August: 9.6 days

The month with the highest number of rainy days is July (11.7 days).
The month with the lowest number of rainy days is September (7.4 days).

Average snowfall in August - Birmingham, AL
  • Average snowfall in August: 0mm

Months with the highest snowfall are January and March (15.2mm).
Months with the lowest snowfall are May, June, July, August, September, October and November (0mm).

Average snowfall days in August - Birmingham, AL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (0.3 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in August / Average sunshine in August - Birmingham, AL
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in August: 8.4h

The month with most sunshine is June (Average sunshine: 9.4h).
The month with least sunshine is January (Average sunshine: 4.8h).

Average UV index in August - Birmingham, AL
  • Average UV index in August: 10

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).