August Weather in Annapolis, United States

Last updated: February 24, 2025

In August, Annapolis experiences warm and vibrant weather, with maximum temperatures reaching up to 33°C (92°F) and an average of 26°C (78°F), offering an inviting atmosphere for outdoor activities. However, the month also brings humidity levels averaging 72%, contributing to a sultry feel. Residents and visitors can expect a fair amount of precipitation, with 15 rain-soaked days accumulating around 159 mm (6.3 in), making an umbrella a handy companion. Despite the occasional downpour, August in Annapolis remains a lively month, perfect for enjoying the city's scenic waterfront and rich history.

August Temperature in Annapolis

In Annapolis, August brings a delightful embrace of summer warmth, with temperatures peaking at an inviting 33°C (92°F). The month starts off with a comfortable minimum of 17°C (63°F) and an average of 26°C (78°F), making it ideal for outdoor activities and enjoying the beautiful Chesapeake Bay. As summer reaches its zenith, the trend showcases a gradual increase from the cooler months, where January's frigid lows plunge to -13°C (10°F), illustrating the dramatic seasonal shift. With the rise in temperatures, August becomes a vibrant month, offering long, sunny days that invite locals and visitors alike to savor the season's final flourish before autumn begins its cool descent.

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

The chart illustrates August temperature patterns in Annapolis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec374046556575807873634942
Data source: Temperature data for Annapolis generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Annapolis

In August, Annapolis experiences a notable increase in precipitation, with 159 mm (6.3 in) of rain falling across an average of 15 days. This trend marks a continuation of the wetter summer months, following July, which recorded the highest rainfall of the year at 174 mm (6.9 in). As summer reaches its peak, these rainy days contribute to the lush greenery of the region, but they also indicate a shift towards the upcoming cooler months when precipitation begins to taper off. Comparing August to earlier months, such as May (138 mm, 5.4 in) and June (102 mm, 4.0 in), the increased rainfall not only signifies a typically humid climate but also sets a precedent for the transformative seasonal changes ahead.

August Precipitation Trends in Annapolis

The chart displays monthly precipitation patterns in Annapolis, 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.
JanFebMarAprMayJunJulAugSepOctNovDec701169511013810217515911312786109
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Annapolis

In August, Annapolis experiences a dip in humidity, with levels at a comfortable 72%. This marks the lowest point of the year, following a gradual decline from the previous months. After peaking at 84% in January, humidity levels steadily decrease through spring and summer, making way for more pleasant conditions. Notably, the July humidity falls to 74%, hinting at a trend toward drier air as summer wanes. However, as autumn approaches, humidity is poised to rise again, with September nudging back up to 75%. This cyclical pattern highlights Annapolis' humid climate, with peaks in the colder months and milder levels during high summer, providing a refreshing change in August.

August Average Humidity in Annapolis

This chart illustrates the average monthly humidity levels in Annapolis, 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%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Annapolis

In August, Annapolis experiences a UV Index of 9, categorized as very high, mirroring the sun’s intensity seen in the previous months of June and July. With a burn time of just 15 minutes, it’s crucial for residents and visitors to take precautions when enjoying the outdoors. This trend continues from April through September, where the UV Index remains notably elevated, emphasizing the importance of sun safety during the summer season. As the year progresses, the index gradually decreases in September, indicating a shift toward more moderate sun exposure. For those planning outdoor activities in Annapolis, staying informed is key; for more details, check out Annapolis UV Index.

Maximum UV Index Levels in Annapolis for August

The chart shows the monthly maximum UV Index (UVI) for Annapolis 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.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Annapolis 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 Annapolis

August in Annapolis brings a delightful blend of warmth and sunshine, boasting 329 hours of sunlight—though slightly less than the peak of 359 hours in July. This trend reflects a gradual decline in daylight as summer wanes, yet August still offers abundant opportunities for outdoor activities and scenic waterfront experiences. The sunshine hours remain significantly higher than the earlier months of the year, with January's meager 151 hours highlighting the seasonal shift. As summer begins to transition into fall, the comfortable warmth of August invites residents and visitors alike to relish the last days of summer before the crisp autumn air takes hold.

Monthly Sunshine Duration in Annapolis: August Highlighted

The August sunshine duration represents the total number of hours Annapolis 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.
JanFebMarAprMayJunJulAugSepOctNovDec151h182h261h268h297h339h359h329h281h250h226h190h
Data source: Annapolis August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Annapolis During August

In Annapolis, August experiences a 35% chance of sunny weather, marking it as one of the less sunny months of the year. This is a notable dip compared to the more favorable conditions seen in the summer months of July, where the likelihood of sunshine rises to 51%. Interestingly, as summer transitions to fall, the chance of sun bounces back in September to 55%, showcasing a trend where late summer offers more sunshine than August itself. Overall, while August may not shine as brightly as other months, the rhythm of weather patterns promises sunnier days just around the corner.

Percentage of Sunny Days in August in Annapolis

The chart illustrates the percentage of sunny days in Annapolis 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 Annapolis experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%28%53%48%41%39%51%35%55%42%56%38%
Data source: Annapolis August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Annapolis in August

In Annapolis, United States, August marks a subtle transition in daylight duration, offering approximately 13 hours of sunlight each day. This month experiences a gradual decline from the sun-soaked peak of summer in July, which also boasts 14 hours of daylight. As summer wanes, the longer days begin to give way to the approach of autumn, with September showing a reduction to 12 hours. Notably, the trend throughout the year reveals a consistent ebb and flow of daylight, starting from a mere 9 hours in January, reaching a maximum in the summer months, and then tapering off towards the colder seasons. This rhythmic pattern not only defines the seasonal experience but also sets the backdrop for outdoor activities and natural changes in the Annapolis landscape.

Average Daylight Hours in Annapolis for August

The chart illustrates the variation in daylight duration in Annapolis throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 46m10h 44m11h 58m13h 15m14h 19m14h 51m14h 33m13h 36m12h 23m11h 7m10h 1m9h 27m
Data source: Annapolis daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Annapolis

In August, Annapolis experiences its calmest winds of the year, with an average speed dropping to 2.7 m/s (6 mph). This decline reflects a broader trend observed throughout the summer months, where wind speeds gradually decrease from June's 3.4 m/s (8 mph) to July's minimal breezes. However, as autumn approaches, September brings a slight revival in wind activity, marking a return closer to the levels seen in the spring. This summer lull suggests a time for calm reflection, as the gentle August breezes create a tranquil atmosphere along the picturesque shores of the Chesapeake Bay.

Average August Wind Speed in Annapolis

The chart displays monthly wind speed patterns in Annapolis, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.94.34.24.13.73.43.22.7 m/s3.63.84.13.6
Data source: Annapolis August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Annapolis Compares to Other Months

The weather in Annapolis 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 Annapolis and find detailed weather information for every month.

August and January present strikingly contrasting weather patterns. In August, temperatures range from a mild 17°C (63°F) at night to a scorching 33°C (92°F) during the day, coupled with high humidity at 72%. The month also sees significant rainfall, receiving 159 mm (6.3 in) over approximately 15 days. In contrast, January experiences much colder temperatures, with lows plummeting to -13°C (10°F) and a maximum of only 17°C (63°F), averaging just around 3°C (37°F). Precipitation is lighter in January, totaling 70 mm (2.7 in) across about 8 days, but the humidity peaks at a high 84%. For a deeper insight into January weather conditions, you can visit Annapolis weather in January.

August and February present starkly contrasting weather conditions. In August, temperatures range from a comfortable 17°C (63°F) at night to a sizzling 33°C (92°F) during the day, with an average of 26°C (78°F). This month also experiences higher rainfall, with 159 mm (6.3 in) over 15 days and humidity at 72%. In contrast, February's climate is much colder, featuring temperatures from a frigid -13°C (10°F) at night to a milder 21°C (69°F) during the day, averaging only 5°C (40°F). Although February receives less precipitation at 116 mm (4.6 in) over 12 days, the humidity is slightly higher at 83%. For more details on February conditions, visit Annapolis weather in February.

Comparing the weather in August and March reveals significant differences. August is characterized by warmer temperatures, with average highs reaching up to 33°C (92°F) and the potential for frequent rainfall, averaging 159 mm (6.3 in) over 15 days. In contrast, March experiences much cooler conditions, with average temperatures ranging from a minimum of -5°C (23°F) to a maximum of 24°C (76°F), and significantly less precipitation at 95 mm (3.7 in) over about 10 days. Additionally, March has a higher humidity level of 83%, compared to August's 72%. For a closer look at the weather specifics for March, check out Annapolis weather in March.

The weather in August is significantly warmer than in April, with average temperatures reaching 26°C (78°F) and maximums soaring to 33°C (92°F). In contrast, April experiences cooler conditions, with average temperatures of just 13°C (56°F) and maximums of 27°C (82°F). Additionally, August is marked by higher precipitation, totaling 159 mm (6.3 in) over about 15 days, while April sees less rain at 110 mm (4.3 in) across 11 days. Interestingly, humidity levels in August are slightly lower at 72%, compared to April's 81%, making August feel a bit more comfortable despite the higher temperatures. For more detail on April's weather, you can check Annapolis weather in April.

In comparing the weather of August and May, we see notable differences in temperature and precipitation. August tends to be a warmer month, with average temperatures reaching 26°C (78°F) and maximums peaking at 33°C (92°F), contrasted by May’s milder averages of 18°C (65°F) and maximums of 31°C (88°F). However, May experiences a lower minimum temperature of 4°C (39°F) compared to August’s minimum of 17°C (63°F). Precipitation in both months is relatively similar, with August receiving slightly more rainfall at 159 mm (6.3 in) over 15 days, while May sees 138 mm (5.4 in) over 13 days. Interestingly, May has a higher humidity level at 78% compared to August's 72%. For more detailed insights, you can explore Annapolis weather in May.

When comparing August and June weather, August tends to be warmer, with an average temperature of 26°C (78°F) compared to 24°C (75°F) in June. While August has a higher maximum temperature of 33°C (92°F) versus June's 32°C (91°F), it also experiences more precipitation, with 159 mm (6.3 in) over 15 days, compared to June's 102 mm (4.0 in) over 13 days. Additionally, August's humidity is slightly lower at 72% compared to June's 79%, contributing to a more comfortable feel despite the higher temperatures. For more detailed weather insights, check out Annapolis weather in June.

In comparing the weather of July and August, we see that both months are characterized by warm temperatures, but August is slightly cooler overall. July experiences a higher average temperature of 27°C (81°F) with maximums reaching up to 35°C (95°F), while August has an average of 26°C (78°F) and peaks at 33°C (92°F). Precipitation levels are also noteworthy; July sees 174 mm (6.9 in) of rain over 14 days, slightly more than August's 159 mm (6.3 in) spread across 15 days. Humidity remains relatively consistent, with July at 74% and August at 72%. For more detailed insights, you can check Annapolis weather in July.

In comparing the weather between August and September, August tends to be warmer with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 33°C (92°F), while September cools down slightly, featuring a temperature range from a minimum of 11°C (52°F) to a maximum of 32°C (90°F). Humidity levels remain relatively high in both months, with August averaging 72% and September slightly higher at 75%. Precipitation is more frequent in August, with about 159 mm (6.3 in) over 15 days, compared to September's 113 mm (4.5 in) over 10 days. For more detailed information, you can refer to Annapolis weather in September.

August and October weather exhibit significant contrasts. In August, temperatures range from a minimum of 17°C (63°F) to a scorching maximum of 33°C (92°F), averaging around 26°C (78°F). The month is marked by higher precipitation, with 159 mm (6.3 in) falling over 15 days, and a humidity level of 72%. On the other hand, October experiences cooler temperatures, with a minimum of 5°C (41°F) and an average of 17°C (64°F), while still reaching a high of 32°C (90°F). Precipitation decreases to 127 mm (5.0 in) over 10 days, and humidity rises slightly to 81%. For more insights into October weather, check out Annapolis weather in October.

August and November present contrasting weather patterns. In August, temperatures range from a mild 17°C (63°F) at night to a scorching 33°C (92°F) during the day, with an average of 26°C (78°F). The month is characterized by high humidity at 72% and significant rainfall, totaling 159 mm (6.3 in) over about 15 days. In contrast, November brings a dramatic drop in temperatures, with a nighttime minimum of -3°C (27°F) and a daytime maximum of 24°C (75°F), resulting in an average of just 9°C (49°F). Precipitation also decreases to 86 mm (3.4 in) over roughly 8 days, while humidity increases to 85%. For a more detailed look at November weather patterns, you can check Annapolis weather in November.

August and December present strikingly different weather conditions. In August, temperatures typically range from a mild 17°C (63°F) at night to a warm average of 26°C (78°F) during the day, peaking at a hot 33°C (92°F). This month also sees considerable rainfall, with 159 mm (6.3 inches) spread over 15 days, and humidity levels averaging 72%. In contrast, December experiences much cooler temperatures, with lows dropping to -8°C (17°F) and averaging around 5°C (42°F), while the maximum rarely exceeds 18°C (65°F). Precipitation is lower at 109 mm (4.3 inches) over 10 days, but humidity rises to 84%, giving a crisp feel to the air. For a detailed look at December weather, you can visit Annapolis weather in December.

Compare Annapolis's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Annapolis

August in Annapolis brings a balmy blend of warmth and humidity, setting it apart from the cooler months. As summer reaches its peak, temperatures frequently soar, making the average feel notably warmer, while the increased humidity can create a muggy atmosphere. This month also experiences more frequent rain, with several days of precipitation contributing to the total rainfall. If you're planning a visit or just curious about what to expect, be sure to check out the complete details and comparisons of Annapolis' climate throughout the year at Annapolis Climate.