Last updated: February 24, 2025
August in Barnstable, United States, is marked by a delightful mix of warm temperatures and moderate humidity. With a maximum temperature reaching 27°C (81°F) and an average of 22°C (72°F), this summer month offers comfortable conditions for outdoor activities. However, residents and visitors should be prepared for occasional showers, as 82 mm (3.2 in) of precipitation falls over 8 days. The humidity hovers around 76%, creating a balmy atmosphere that complements the season. Whether basking in the sun or enjoying the refreshing rain, August is a vibrant time in Barnstable.
In Barnstable, United States, August ushers in the warmth of summer with temperatures ranging from a pleasant 16°C (61°F) to a peak of 27°C (81°F). The average temperature settles around 22°C (72°F), making it one of the warmest months of the year. This is a notable rise from the cooler days of earlier months, like January and February, where temperatures linger around freezing. With consistently mild nights and plenty of sunny days, August is an ideal time for outdoor activities, contrasting sharply with the frigid winter months. The gradual progression in temperatures from spring to summer underscores a clear seasonal transition, inviting both residents and visitors to savor warm coastal days before the autumn chill begins to set in.
In August, Barnstable experiences a subtle decline in precipitation, with 82 mm (approximately 3.2 inches) of rain falling over just 8 days. This marks the continuation of a trend from July, where rainfall dipped to 83 mm amidst 9 rainy days, indicating a gradual transition into drier late summer months. Contrasting with the wetter spring months—where April peaked at 137 mm—August’s relatively lower totals reflect the region's seasonal shifts. As the summer heat persists, these brief but less frequent rain showers not only provide relief but also hint at an upcoming variability in September's precipitation, when totals are expected to rise again to 118 mm. Overall, the rainfall pattern in August accentuates Barnstable’s summer climate, balancing warmth with occasional refreshing downpours.
In August, Barnstable experiences a humidity level of 76%, maintaining a consistent trend seen throughout the summer months. Following a slight decline from 79% in April to a peak of 78% in June, humidity levels plateaued at 76% in both July and August. This marks a subtle drop from the more humid spring months, yet still maintains a comfortable balance. As summer transitions to fall in September, humidity slightly decreases further to 75%, indicating that Barnstable enjoys relatively stable humidity throughout the summer, offering a pleasant climate for residents and visitors alike.
In August, Barnstable experiences a UV Index of 9, indicating a very high risk of harm from unprotected sun exposure, with a burn time of just 15 minutes. This trends closely with the preceding summer months, as both June and July also recorded a high index of 9. The shift from the high indices in March and October to the very high levels in mid-summer underscores the increasing intensity of UV radiation. As summer peaks, residents and visitors alike should exercise caution to protect their skin. For more detailed information on UV levels, visit Barnstable UV Index.
UV Risk Categories
In Barnstable, United States, August basks in 330 hours of sunshine, continuing the trend of summer's peak luminosity established in July with an impressive 346 hours. This vibrant month is part of a warm progression from the comparatively modest 142 hours in January, gradually increasing through spring and reaching a sun-soaked crescendo in the heart of summer. As the year transitions into fall, sunshine hours begin to taper off, with September still enjoying 280 hours before dipping further into the autumn months. This pattern highlights the undeniable warmth and brightness that characterize New England summers, making August a vital point in the yearly cycle of light.
August in Barnstable brings a 35% chance of sunny weather, slightly lower than the summer months preceding it. This trend continues the pattern of fluctuating sunshine probabilities throughout the year, where the peak occurs in March at 57% and dips during the late summer and winter months. Although August does not boast the sunniest days, it still offers better conditions compared to the cooler months of January and February, which see chances as low as 28%. Overall, while sunshine may not be guaranteed in August, the weather remains relatively favorable for outdoor activities compared to the chillier seasons.
In Barnstable, United States, August marks a gentle transition as daylight begins to wane, offering about 13 hours of sunlight. This follows the peak brightness of June, which boasts 15 hours of daylight, with July slightly tapering off to 14 hours. The trends clearly illustrate a summer crescendo that gradually gives way to autumn, with September seeing a decrease to 12 hours. This rhythmic ebb and flow of daylight not only defines the seasonal character of the region but also sets the stage for the cozy embrace of fall as daylight diminishes further in the coming months. The gradual shift serves as a beautiful reminder of nature's cyclical patterns, offering residents a blend of warm summer days and the crispness that autumn promises.
As summer fades into autumn, August in Barnstable heralds the calmest winds of the year, with an average speed dipping to 4.8 m/s (11 mph). This gentle breeze stands in contrast to the robust winds of the earlier months, peaking at 7.2 m/s (16 mph) in February and remaining relatively strong through spring. However, as temperatures rise, wind speeds gradually decrease, reaching their nadir in August. Following this lull, a subtle resurgence occurs in September, and the winds pick up again into fall. The overall trend showcases a seasonal ebb and flow, where the breeziness of winter and spring gives way to the tranquil yet fleeting atmospheric embrace of late summer.
The weather in Barnstable 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 Barnstable and find detailed weather information for every month.
August and January present starkly contrasting weather conditions. In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 27°C (81°F), with an average of 22°C (72°F). The month sees around 82 mm (3.2 in) of precipitation over 8 days and boasts a humidity level of 76%. In contrast, January experiences much colder weather, with temperatures plummeting to a minimum of -14°C (6°F) and peaking at 13°C (55°F), resulting in an average temperature of just 2°C (36°F). Precipitation in January is slightly higher at 94 mm (3.7 in) but occurs over 10 days, and humidity is also elevated at 84%. For more detailed insights, you can check Barnstable weather in January.
August and February present stark contrasts in weather. In August, temperatures range from a mild 16°C (61°F) at night to a warm maximum of 27°C (81°F), accompanied by a moderate humidity of 76% and occasional rainfall totaling 82 mm over about 8 days. In contrast, February is characterized by much colder temperatures, with lows plunging to -12°C (10°F) and a max of only 11°C (53°F), along with a higher average precipitation of 123 mm spread over 12 days, and elevated humidity levels of 84%. For more detailed weather specifics during February, you can visit Barnstable weather in February.
In comparing the weather of August and March, it becomes clear that these two months present stark contrasts in temperature and conditions. August enjoys milder weather with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 27°C (81°F), accompanied by a relatively lower precipitation level of 82 mm (3.2 in) over 8 days. In contrast, March experiences chilly conditions, with temperatures averaging between -9°C (16°F) and 13°C (56°F), alongside a higher precipitation total of 118 mm (4.7 in) spread across 10 days. Humidity levels are slightly higher in March at 82%, compared to August's 76%, contributing to a different overall feel in the air. For a detailed look at March weather specifics, you can visit Barnstable weather in March.
When comparing the weather in August and April, it's evident that August is significantly warmer, with average temperatures ranging from 16°C (61°F) to a maximum of 27°C (81°F), while April's temperatures are much cooler, averaging between 1°C (33°F) and 16°C (60°F). Additionally, August experiences less rainfall, with 82 mm (3.2 in) over 8 days, compared to April's higher precipitation of 137 mm (5.4 in) over 13 days. Interestingly, while April has slightly higher humidity at 79%, August’s humidity stands at 76%, contributing to its warmer and more comfortable conditions. For more detailed information on April weather, you can check Barnstable weather in April.
When comparing the weather in August and May, a marked difference can be noted in temperature and precipitation. August typically sees higher temperatures, with a minimum of 16°C (61°F) and an average of 22°C (72°F), peaking at 27°C (81°F). In contrast, May starts cooler, with temperatures ranging from a minimum of 5°C (41°F) to an average of 12°C (53°F), and only reaching a maximum of 21°C (70°F). Precipitation in May is also higher at 119 mm (4.7 in) over 12 days, compared to August's 82 mm (3.2 in) over 8 days. Humidity levels are slightly elevated in August at 76%, while May maintains a similar humidity at 75%. For more specific details on May weather, you can visit Barnstable weather in May.
When comparing the weather in June and August, August tends to be warmer and slightly drier. In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 27°C (81°F), with an average temperature of 22°C (72°F). In contrast, June features cooler temperatures, with a minimum of 10°C (51°F), an average of 17°C (63°F), and a maximum of 24°C (76°F). While June experiences a bit more precipitation, totaling 91 mm (3.6 in) over 10 days, August sees 82 mm (3.2 in) of rain over just 8 days, contributing to higher humidity levels in August at 76% compared to June's 78%. For more details on June weather, you can visit Barnstable weather in June.
In comparing the weather of August and July, we find that both months exhibit similar temperature ranges with August experiencing a slightly higher average of 22°C (72°F) compared to July's 21°C (71°F). The maximum temperature for July reaches 29°C (84°F), making it slightly warmer during the peak days, while August's maximum sits at a cooler 27°C (81°F). Precipitation levels are comparable, with August bringing 82 mm (3.2 in) over 8 days, just a tad less than July's 83 mm (3.3 in) over 9 days. Humidity levels remain constant at 76% for both months, creating a similar feel in terms of moisture in the air. For a detailed look at July's weather, you can refer to Barnstable weather in July.
August and September showcase a gradual transition in weather patterns. August typically enjoys warmer temperatures, with averages around 22°C (72°F) and maximums reaching 27°C (81°F), while September sees a slight dip, averaging 19°C (67°F) and peaking at 25°C (78°F). Precipitation increases in September, totaling 118 mm (4.7 in) over 10 days compared to August's 82 mm (3.2 in) across 8 days, indicating a wetter month. Humidity remains relatively stable, with August at 76% and September slightly lower at 75%. For more detailed insights, you can explore Barnstable weather in September.
August typically enjoys warmer temperatures, with averages around 22°C (72°F) and highs reaching 27°C (81°F), while October sees a significant drop, averaging only 15°C (59°F) and peaking at 22°C (72°F). In terms of precipitation, October is notably wetter, with 175 mm (6.9 in) of rain over 12 days compared to August's 82 mm (3.2 in) over 8 days. Humidity levels are quite similar, hovering around 76% in August and 75% in October. For a more detailed look at what to expect specifically in Barnstable, you can visit Barnstable weather in October.
August and November present contrasting weather patterns, showcasing the transition from summer warmth to autumn chill. In August, temperatures range from a mild 16°C (61°F) to a warm 27°C (81°F), accompanied by relatively high humidity at 76% and a total precipitation of 82 mm (3.2 in) over 8 days. In contrast, November experiences much cooler conditions, with average temperatures dropping to 9°C (48°F), and ranging from a low of -6°C (21°F) to a high of 19°C (66°F). This month sees a slight increase in precipitation to 102 mm (4.0 in) over 10 days, and humidity remains elevated at 80%. For more details on the weather in Barnstable during this month, you can visit Barnstable weather in November.
The comparison between August and December weather highlights a stark contrast in temperatures and conditions. In August, temperatures typically range from a minimum of 16°C (61°F) to a maximum of 27°C (81°F), accompanied by relatively high humidity at 76% and light precipitation over approximately 8 days, totaling 82 mm (3.2 in). In contrast, December brings a much colder climate, with winter temperatures dropping to a minimum of -12°C (11°F) and averaging around 4°C (40°F), while reaching a maximum of 15°C (60°F). This month experiences more precipitation, totaling 136 mm (5.4 in) over 12 days, alongside a humidity level that increases slightly to 80%. For more details on December weather, refer to Barnstable weather in December.
As summer reaches its peak, August in Barnstable boasts warm temperatures and a pleasant atmosphere that sets it apart from other months. With an average temperature hovering around 22°C (72°F), residents and visitors alike can enjoy the longer days, though they also come with an increase in humidity at 76%. While occasional rainfall is expected, with about 82 mm (3.2 in) across roughly eight days, these showers often provide a refreshing break from the summer heat. Overall, August offers a vibrant blend of warmth and humidity, making it a quintessential beach vacation month. For more insights into Barnstable's weather patterns, visit Barnstable Climate.