August weather forecast
Bryn Mawr, PA

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Weather in August

August, the last month of the summer in Bryn Mawr, is another warm month, with an average temperature ranging between min 67.5°F (19.7°C) and max 83.7°F (28.7°C).

Temperature

The commencement of August brings an average high-temperature of a still moderately hot 83.7°F (28.7°C), marking an inconsequential divergence from July. An average minimum temperature of 67.5°F (19.7°C) marks the month of August in Bryn Mawr.

Heat index

For most parts of August, the heat index is evaluated at a hot 89.6°F (32°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Note that heat index values are valued for light wind and location in the shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

April, July and August, with an average relative humidity of 71%, are the least humid months in Bryn Mawr.

Rainfall

The wettest months are July and August, with an average 1.14" (29mm) of rainfall.

Snowfall

April through October are months without snowfall in Bryn Mawr, Pennsylvania.

Daylight

The average length of the day in August in Bryn Mawr is 13h and 42min.
On the first day of August, sunrise is at 6:00 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:33 pm EDT.

Sunshine

In August, the average sunshine in Bryn Mawr is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

How hot is August in Bryn Mawr?

In Bryn Mawr, in August, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 67.5°F (19.7°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 89.6°F (32°C).

What is the least humid month in Bryn Mawr?

April, July and August, with an average relative humidity of 71%, are the least humid months in Bryn Mawr.

What is the average humidity in August in Bryn Mawr?

The average relative humidity in August in Bryn Mawr, Pennsylvania, is 71%.

What is the wettest month in Bryn Mawr?

The months with the most rainfall are July and August, with an average 1.14" (29mm) of precipitation.

How much does it rain in Bryn Mawr in August?

In Bryn Mawr, in August, it is raining for 12.2 days, with typically 1.14" (29mm) of accumulated precipitation.

When it does not snow in Bryn Mawr?

In Bryn Mawr, Pennsylvania, snow does not fall in April through October.

What is the average length of the day in August in Bryn Mawr?

In Bryn Mawr, the average day length in August is 13h and 42min.

What time are sunrise and sunset in August in Bryn Mawr?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 8:14 pm. On the last day of the month, in Bryn Mawr, Pennsylvania, sunrise is at 6:28 am and sunset at 7:33 pm EDT.

How long on average sun shines in August in Bryn Mawr?

In August, the average sunshine duration is 10h.

What is the month with the highest UV index in Bryn Mawr?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Bryn Mawr.

What is the UV index reading in August in Bryn Mawr?

In Bryn Mawr, Pennsylvania, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bryn Mawr, PA

Average temperature in August - Bryn Mawr, PA
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in August: 67.5°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in August
Bryn Mawr, PA

Average pressure in August - Bryn Mawr, PA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in August
Bryn Mawr, PA

Average wind speed in August - Bryn Mawr, PA
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in August
Bryn Mawr, PA

Average humidity in August - Bryn Mawr, PA
  • Average humidity in August: 71%

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

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Average rainfall in August
Bryn Mawr, PA

Average rainfall in August - Bryn Mawr, PA
  • Average rainfall in August: 1.14"

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in August
Bryn Mawr, PA

Average rainfall days in August - Bryn Mawr, PA
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in August
Bryn Mawr, PA

Average snowfall in August - Bryn Mawr, PA
  • Average snowfall in August: 0"

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Bryn Mawr, PA

Average snowfall days in August - Bryn Mawr, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Bryn Mawr, PA

Average daylight in August / Average sunshine in August - Bryn Mawr, PA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Bryn Mawr, PA

Average sunshine days in August - Bryn Mawr, PA
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

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Average UV index in August
Bryn Mawr, PA

Average UV index in August - Bryn Mawr, PA
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Bryn Mawr, PA

Average cloud cover in August - Bryn Mawr, PA
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in August
Bryn Mawr, PA

Average visibility in August - Bryn Mawr, PA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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Bryn Mawr, Pennsylvania, USA

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