August Weather in Bristol, United States

Last updated: February 24, 2025

Experience the vibrant August weather in Bristol, United States, where temperatures can soar to a maximum of 34°C (94°F), while maintaining a comfortable average of 23°C (74°F). The month brings a refreshing minimum temperature of 11°C (52°F), making early mornings and evenings delightful. However, prepare for a bit of moisture, as precipitation totals around 92 mm (3.6 in) over 11 days, contributing to a humidity level of 76%. This blend of warmth and occasional rain creates a lush, inviting atmosphere perfect for summer activities and outdoor adventures.

August Temperature in Bristol

In August, Bristol experiences warm and inviting temperatures, perfectly embodying the height of summer. With a minimum temperature around 11°C (52°F) and an average soaring to 23°C (74°F), the month is marked by pleasant days that beckon outdoor activities. The maximum temperature can reach 34°C (94°F), offering ample opportunities for sun-soaked adventures. As the year progresses from the chilly depths of winter, August stands out as a time of warmth and vibrant energy, with consistent highs that underscore its reputation as one of the year's toastiest months. This seasonal peak is a delightful contrast to the cooler temperatures of the preceding months, highlighting a clear trend of rising warmth as summer unfolds in Bristol.

August Weather in Bristol: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Bristol, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec333539485868747367574536
Data source: Temperature data for Bristol generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Bristol

In August, Bristol experiences a moderate level of precipitation, with an average of 92 mm (3.6 in) over 11 days. This volume mirrors the earlier months of the summer but marks a noticeable drop from July's wetter conditions, which brought 122 mm (4.8 in) over the same duration. As the summer begins to fade, the trend of rainfall is gradually tapering off, hinting at the transition toward drier autumn months. Interestingly, September typically follows suit with a similar precipitation amount, maintaining a consistent pattern of light to moderate rainfall. Overall, August stands as a pivotal month in Bristol's climatic narrative, balancing summer's lingering showers with the impending shift to autumn.

August Precipitation Trends in Bristol

The chart displays monthly precipitation patterns in Bristol, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec7492102123101971229297135101120
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Bristol

As summer transitions into fall, August in Bristol, United States, showcases a consistent humidity level of 76%, which mirrors the slightly drier conditions of July. A noticeable decrease in humidity from the winter months is evident, where figures hover around 84% in January and February. This trend continues as the year progresses, with humidity gradually decreasing to its lowest point of 75% in both May and September. The shift to milder humidity levels during the warmer months offers residents and visitors a more comfortable experience, particularly as the vibrant summer days begin to wane. Overall, Bristol’s August humidity reflects a seamless connection between summer warmth and the incoming coolness of autumn, creating a refreshing atmosphere for outdoor activities.

August Average Humidity in Bristol

This chart illustrates the average monthly humidity levels in Bristol, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Bristol

In August, Bristol experiences a UV Index of 9, indicating a very high risk of harm from unprotected sun exposure, with a burn time as short as 15 minutes. This trend continues the pattern established earlier in the summer months, where June and July also registered high UV levels. As we move into September, the UV Index slightly decreases to 8, yet remains in the very high category. Therefore, it's crucial for residents and visitors to prioritize sun safety practices during this time to mitigate the risks of sunburn. For more insights and to plan accordingly, check out the detailed report at Bristol UV Index.

Maximum UV Index Levels in Bristol for August

The chart shows the monthly maximum UV Index (UVI) for Bristol in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Bristol August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Bristol

As summer reaches its zenith, August in Bristol shines almost as brightly as July, boasting 329 hours of sunshine. This month continues the trend of long, sun-soaked days that began in May, peaking in July with a remarkable 347 hours. Following the mid-year surge, August experiences a small but significant decrease in sunshine, hinting at the looming transition into the milder days of autumn. Despite the slight decline, August's hours still surpass those of earlier months, illustrating a robust summer that nurtures both nature and spirit. As the sun sets on August, it leaves behind a vibrant tapestry of warmth that lingers into September's quieter 282 hours, marking the gradual shift towards cooler times.

Monthly Sunshine Duration in Bristol: August Highlighted

The August sunshine duration represents the total number of hours Bristol experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec150h188h261h250h295h326h347h329h282h230h207h176h
Data source: Bristol August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bristol During August

In Bristol, United States, August typically sees a 30% chance of sunny weather, marking it as one of the less favorable months for sunshine compared to other times of the year. This trend is consistent with the noticeable decline in sunny days throughout the summer, as July boasts a slightly higher 36% chance. Interestingly, the weather begins to improve in early autumn, with September showing a more promising 44% likelihood of clear skies. Overall, while August may not sparkle with sunshine, the shifting patterns leading into fall offer a glimmer of hope for brighter days ahead.

Percentage of Sunny Days in August in Bristol

The chart illustrates the percentage of sunny days in Bristol throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Bristol experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%31%60%44%40%38%36%30%44%42%56%33%
Data source: Bristol August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bristol in August

In Bristol, United States, the August daylight duration offers a glimpse of summer's gradual transition into fall. With approximately 13 hours of daylight, August experiences a slight decline from the peak of 15 hours seen in June. This subtle shift reflects the annual rhythm of daylight, where the summer solstice sets the stage for the longest days. As we move deeper into the month, the daylight begins to wane, preparing for the autumn months ahead, highlighted by 12 hours in September and tapering down to 11 hours in October. The cyclical nature of daylight in Bristol not only marks the changing seasons but also invites a deeper appreciation for the warm, long days of summer as they gracefully yield to the crispness of fall.

Average Daylight Hours in Bristol for August

The chart illustrates the variation in daylight duration in Bristol throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 31m10h 36m11h 58m13h 22m14h 33m15h 9m14h 49m13h 46m12h 25m11h 1m9h 48m9h 10m
Data source: Bristol daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Bristol

In Bristol, United States, the August winds lull into a gentle breeze, with average wind speeds dipping to 2.8 m/s (6 mph), the calmest month of the year. This trend of waning winds is observed as the summer peaks, transitioning from a breezy March (4.1 m/s) to the tranquil heights of August. Following a gradual decline through the summer, the winds reassert themselves in September, returning to a more moderate pace of 3.4 m/s (8 mph). The shift between these months highlights a seasonal rhythm, where the vibrant energy of early spring gives way to a serene summer stillness before the winds pick up once more in the cooler months.

Average August Wind Speed in Bristol

The chart displays monthly wind speed patterns in Bristol, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.83.84.13.93.53.42.92.8 m/s3.43.53.53.5
Data source: Bristol August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Bristol Compares to Other Months

The weather in Bristol changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Bristol and find detailed weather information for every month.

August and January present striking contrasts in weather. In August, temperatures range from a mild minimum of 11°C (52°F) to a sweltering maximum of 34°C (94°F), with an average temperature of 23°C (74°F). This month experiences considerable precipitation, totaling 92 mm (3.6 in) over 11 days, accompanied by high humidity levels of 76%. In contrast, January sees much colder conditions, with temperatures dipping as low as -20°C (-4°F) and averaging around 0°C (33°F). The maximum temperature in January reaches a relatively mild 20°C (69°F). Precipitation decreases slightly to 74 mm (2.9 in) over just 8 days, while humidity rises to 84%. These differences highlight the seasonal extremes experienced, with August basking in warmth and January engulfed in chill. For more details on the winter weather conditions, visit Bristol weather in January.

August and February present starkly contrasting weather conditions. In August, temperatures range from a mild 11°C (52°F) at night to a scorching 34°C (94°F) during the day, with an average of 23°C (74°F). The month experiences 92 mm (3.6 in) of precipitation over 11 days, and the humidity sits at a warm 76%. In contrast, February brings a much colder climate, with temperatures plummeting to a chilling minimum of -16°C (3°F) and a maximum of 19°C (67°F), averaging around 1°C (35°F). While both months receive the same amount of precipitation, February's humidity is slightly higher at 84%. For more specific details about February’s weather, you can visit Bristol weather in February.

Comparing the weather of August and March reveals stark contrasts in temperature and conditions. In August, temperatures range from a mild 11°C (52°F) at night to a warm 34°C (94°F) during the day, with an average of 23°C (74°F). The humidity is relatively high at 76%, and the month experiences around 92 mm (3.6 in) of rainfall over approximately 11 days. In contrast, March is much cooler, with temperatures dropping as low as -14°C (7°F) at night and only reaching a maximum of 20°C (69°F). The average temperature falls to a chilly 4°C (39°F), and while precipitation is slightly higher at 102 mm (4.0 in) over 10 days, the humidity also peaks at 82%. For more details on March weather, check out Bristol weather in March.

In comparing the weather between April and August, we see significant differences in temperature and precipitation patterns. August typically enjoys warmer weather with average temperatures reaching around 23°C (74°F) and a maximum of 34°C (94°F), whereas April's average temperature is much cooler at 9°C (49°F), with highs of 28°C (82°F). Interestingly, April experiences higher overall precipitation, totaling 123 mm (4.9 in) over approximately 12 days, compared to August's 92 mm (3.6 in) over 11 days. Humidity levels are also slightly higher in August at 76%, while April's humidity averages around 79%. For a more detailed look at Bristol's weather in April, you can visit Bristol weather in April.

When comparing the weather in August and May, one can observe distinct differences. August tends to be warmer, with average temperatures around 23°C (74°F) and maximums reaching up to 34°C (94°F), while May is cooler, averaging 15°C (58°F) with maximum temperatures of 33°C (91°F). Precipitation in August is slightly lower at 92 mm (3.6 in) over about 11 days, compared to May's 101 mm (4.0 in) over 12 days, indicating a wetter month overall in May. Humidity levels are relatively similar, with August at 76% and May at 75%. For more detailed insights, you can check Bristol weather in May.

When comparing the weather in August and June, it’s clear that both months experience warm temperatures, but August tends to be slightly warmer overall. In August, the minimum temperature starts at 11°C (52°F) and averages around 23°C (74°F), reaching a high of 34°C (94°F). In contrast, June features a lower minimum temperature of 8°C (47°F) and an average temperature of 20°C (68°F), also peaking at 34°C (93°F). Precipitation levels are comparable, with August receiving 92 mm (3.6 inches) over 11 days and June at 97 mm (3.8 inches) over the same number of days. Humidity is also marginally higher in June, at 78%, compared to August’s 76%. For more details on June weather, visit Bristol weather in June.

In comparing the weather between August and July, it is evident that both months experience similar average temperatures, hovering around 23°C (74°F). However, July tends to be warmer with maximum temperatures reaching up to 37°C (99°F), compared to a maximum of 34°C (94°F) in August. Precipitation in August is slightly lower at 92 mm (3.6 in) over 11 days, while July sees more rain at 122 mm (4.8 in) over 12 days. Interestingly, both months share the same humidity level of 76%, creating a consistently humid environment. For a more detailed look at July temperatures, you can check out Bristol weather in July.

August and September present a noticeable shift in weather patterns. August tends to be warmer with average temperatures around 23°C (74°F), and it can reach up to 34°C (94°F) on hotter days. In contrast, September sees a drop in the average temperature to 19°C (67°F) and a minimum of 6°C (43°F). Both months experience similar levels of precipitation, with August experiencing 92 mm (3.6 in) over 11 days and September slightly higher with 97 mm (3.8 in) over just 9 days. Humidity remains fairly constant, at 76% in August and 75% in September. To learn more about September's climate specifics, you can check Bristol weather in September.

In August, the weather is characterized by warmer temperatures, with an average of 23°C (74°F) and maximum highs reaching up to 34°C (94°F). The month experiences a total precipitation of 92 mm (3.6 in) over 11 days, accompanied by a relatively high humidity level of 76%. In contrast, October brings cooler temperatures, with an average of 14°C (57°F) and maximums around 27°C (81°F). While the minimum temperature can drop to -1°C (31°F), October sees increased precipitation of 135 mm (5.3 in) over the same number of days, maintaining a similar humidity level of 75%. For further details, visit Bristol weather in October.

August and November present stark contrasts in weather conditions. In August, temperatures range from a mild 11°C (52°F) at night to a scorching 34°C (94°F) during the day, with an average of 23°C (74°F). The month sees considerable precipitation, totaling 92 mm (3.6 in) over 11 days, along with a humidity level of 76%. In contrast, November experiences much colder weather, with minimum temperatures plummeting to -10°C (14°F) and a daytime maximum of 23°C (73°F), leading to an average of 7°C (45°F). Precipitation slightly increases to 101 mm (4.0 in) over 9 days, and humidity rises to 80%. For more details on November weather in Bristol, check out Bristol weather in November.

In August, the weather is generally warm and humid, with average temperatures hovering around 23°C (74°F) and a maximum that can reach as high as 34°C (94°F). There's a moderate amount of rainfall, with around 92 mm (3.6 in) of precipitation over approximately 11 days. In contrast, December brings much colder conditions, where the average temperature plummets to just 2°C (36°F) and can dip as low as -15°C (5°F). Although December sees slightly more precipitation at 120 mm (4.7 in) over 10 days, the humidity remains comparable at 80%. For more details, you can check out Bristol weather in December.

Compare Bristol's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Bristol

August in Bristol presents a unique weather profile that sets it apart from other months. With the potential for soaring temperatures reaching up to 34°C (94°F), it becomes one of the hottest times of the year, offering an inviting warmth for outdoor activities. However, this warmth comes hand-in-hand with an elevated humidity level of 76%, making the tropical conditions feel even more intense. While summer fun thrives, the month also sees a notable increase in rainfall, with 11 days of precipitation contributing to a total of 92 mm (3.6 in). This blend of heat and moisture creates a dynamic weather experience, distinct from the cooler, dryer months of spring and fall. For a more detailed look at how Bristol's climate varies throughout the year, visit Bristol Climate.