August weather forecast
Bristol, PA

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Weather in August

The last month of the summer, August, is another warm month in Bristol, Pennsylvania, with an average temperature ranging between min 66.7°F (19.3°C) and max 83.1°F (28.4°C).

Temperature

The advent of August presents an average high-temperature of a still moderately hot 83.1°F (28.4°C), maintaining a close correlation with the preceding month. During the month of August, Bristol's nighttime temperature lowers to an average of 66.7°F (19.3°C).

Heat index

The heat index value during August is estimated at a hot 89.6°F (32°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

In Bristol, the average relative humidity in August is 73%.

Rainfall

In Bristol, in August, during 16 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. In Bristol, during the entire year, the rain falls for 154.4 days and collects up to 31.38" (797mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 43min.
On the first day of August, sunrise is at 5:58 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:32 pm EDT.

Sunshine

The average sunshine in August is 10.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

How hot is August in Bristol?

In Bristol, in August, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 66.7°F (19.3°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in August in Bristol?

The average relative humidity in August in Bristol is 73%.

How much does it rain in Bristol in August?

In Bristol, Pennsylvania, in August, during 16 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

When it does not snow in Bristol?

In Bristol, snow does not fall in June through October.

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

The average day length in August in Bristol, Pennsylvania, is 13h and 43min.

When are sunrise and sunset in August in Bristol?

On the first day of August in Bristol, Pennsylvania, sunrise is at 5:58 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:32 pm EDT.

How many hours of sunshine does Bristol have in August?

In August, the average sunshine duration in Bristol is 10.2h.

When is the highest UV index in Bristol?

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

What is the UV index intensity in August in Bristol?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe 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
Bristol, PA

Average temperature in August - Bristol, PA
  • Average high temperature in August: 83.1°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in August
Bristol, PA

Average pressure in August - Bristol, PA
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Bristol, PA

Average wind speed in August - Bristol, PA
  • Average wind speed in August: 5.4mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in August
Bristol, PA

Average humidity in August - Bristol, PA
  • Average humidity in August: 73%

The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in August
Bristol, PA

Average rainfall in August - Bristol, PA
  • Average rainfall in August: 3.5"

The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days in August
Bristol, PA

Average rainfall days in August - Bristol, PA
  • Average rainfall days in August: 16 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).

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Average snowfall in August
Bristol, PA

Average snowfall in August - Bristol, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Bristol, PA

Average snowfall days in August - Bristol, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Bristol, PA

Average daylight in August / Average sunshine in August - Bristol, 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 1min

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 48min).

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Average sunshine days in August
Bristol, PA

Average sunshine days in August - Bristol, PA
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index in August
Bristol, PA

Average UV index in August - Bristol, 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
Bristol, PA

Average cloud cover in August - Bristol, PA
  • Average cloud cover in August: 33

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in August
Bristol, PA

Average visibility in August - Bristol, 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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Bristol, Pennsylvania, USA

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