Last updated: February 24, 2025
August in Manhattan, United States, brings warm, vibrant weather characterized by a maximum temperature soaring to 34°C (93°F) and an average of 25°C (76°F), creating the ideal backdrop for summer activities. Amidst the sun, the minimum temperature of 16°C (61°F) provides a comfortable respite in the evenings. However, residents and visitors should prepare for frequent rainfall, with 14 days of precipitation accumulating to 127 mm (5.0 in) throughout the month. The humidity level hovers around 65%, enhancing the summer experience while offering a taste of the city's tropical flair. Enjoy the lively atmosphere, but don’t forget your umbrella!
In August, Manhattan experiences a vibrant climax of summer, with temperatures reflecting the season's warmth and vibrancy. The minimum temperature hovers at a comfortable 16°C (61°F), while the average rises to a pleasant 25°C (76°F), peaking at a maximum of 34°C (93°F). This trend marks a continuation from July's heat, showcasing a consistent warm climate that draws locals and tourists alike to enjoy outdoor activities. As August unfolds, the warmth gradually transitions into the cooler days of September, yet offers a final celebration of summer’s embrace, with enticing conditions ideal for exploring the city's parks, rooftops, and bustling streets.
In August, Manhattan experiences a notable increase in precipitation, with an average of 127 mm (5.0 in), making it one of the wetter months of the year. This uptick is accompanied by an increase in rainy days, totaling 14 days, which contributes to the humid summer atmosphere. Compared to July, which holds the record for the highest monthly precipitation at 148 mm (5.8 in) over 13 days, August demonstrates a slightly drier yet consistently wet pattern that signals the transition into the fall season. As summer storms brew, the city's vibrant streets shimmer with rain, offering a refreshing contrast to the intense heat, while also contributing to the lush greenery of the urban landscape. Overall, the precipitation trend in August reinforces Manhattan's dynamic seasonal climate, setting the stage for September's usual decrease in rainfall.
In August, Manhattan experiences a noticeable shift in humidity, with levels rising to 65%, a slight increase from the lower July average of 62%. The trend reveals a gradual decline in humidity from the higher winter months of 84% in January to a summer low, followed by a modest rebound in late summer and early fall. As the city transitions from the sweltering days of summer to the cooler autumn months, humidity levels generally hover around the mid-60s to 70s, with September rising slightly to 68%. This pattern highlights Manhattan's shifting climate, where the high humidity of winter gives way to a more comfortable but still humid summer before the autumn air brings relief.
In August, Manhattan experiences a UV Index of 9, placing it in the very high exposure category, which means sunburn can occur in just 15 minutes. This trend of elevated UV levels has been consistent throughout the summer, with both June and July also reporting a UV Index of 10 and 9, respectively. This continuation of high UV exposure emphasizes the importance of sun safety practices as the warm weather peaks. As summer transitions to fall, the UV Index gradually decreases, with September seeing a slight dip to 8. For those enjoying outdoor activities, being aware of these indices is crucial; you can find more detailed information at Manhattan UV Index.
UV Risk Categories
In August, Manhattan basks in the warmth of summer, enjoying a remarkable 309 hours of sunshine. This abundance of sunlight follows a peak in July with 339 hours, creating a vibrant atmosphere that encourages outdoor activities and social gatherings. As the summer months unfold, from June's 310 hours to July's high, August maintains a strong presence, though slightly lesser, before transitioning into the milder daylight of September, which offers 272 hours of sun. The gradual decrease in sunlight from July to September signals the end of summer, yet August stands out for its sizzling, sun-drenched days, inviting both locals and tourists to savor the city's lively streets and parks before the cooler autumn settles in.
In August, Manhattan experiences a notable decline in the likelihood of sunny weather, with only a 29% chance of sunshine. This marks the lowest probability of clear skies in the summer months, following slightly better chances in July at 43% and June at 39%. As leisure time peaks during this month, the dip in sunny days may tempt locals and tourists alike to adjust their outdoor plans. Interestingly, while fall begins to creep in with September returning to a 45% chance of sunny weather, this August trend may remind us that even summer isn’t guaranteed to deliver the bright days we often associate with it.
As summer fades into autumn, August arrives with a delightful 13 hours of daylight, a slight dip from the previous month’s peak. This gradual transition highlights a key trend in Manhattan's daylight duration, beginning with a brisk increase from just 9 hours in January to the 15 hours experienced in June. Following the summer solstice, daylight hours begin to wane, but August still offers ample sunlight, allowing residents and visitors to enjoy the city’s vibrant outdoor life before the days shorten further into September. The shift reflects the rhythmic dance of the seasons in the urban landscape, where each hour of sunlight plays a crucial role in shaping the lively atmosphere of New York.
As the summer winds down in August, Manhattan experiences its calmest breezes, with average wind speeds dropping to 2.5 m/s (6 mph). This marks a noticeable decline from the earlier months, showcasing a gentle lull in the typically vibrant city atmosphere. Leading up to August, the wind gradually decreased, with July recording slightly higher speeds of 2.6 m/s (6 mph). In contrast, the city will soon welcome a slight uptick in wind as September approaches, when speeds rise again to an average of 3.1 m/s (7 mph). This trend reflects the city's transition from the sweltering summer heat to the more invigorating autumnal breezes, inviting residents and visitors alike to revel in the enchanting changes that each season brings.
The weather in Manhattan 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 Manhattan and find detailed weather information for every month.
August and January present strikingly different weather conditions. In August, temperatures range from a mild 16°C (61°F) at night to a sizzling 34°C (93°F) during the day, accompanied by relatively high humidity levels of 65% and significant rainfall, with 127 mm (5.0 in) spread over 14 days. In contrast, January features much harsher temperatures, dipping as low as -18°C (-1°F) and averaging just 1°C (34°F), with a maximum of 18°C (64°F). The precipitation in January is also lighter, totaling 67 mm (2.7 in) over just 7 days, although humidity is higher at 84%. For more details on January weather specifics, check out Manhattan 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 sizzling 34°C (93°F) during the day, with an average of 25°C (76°F). The month experiences significant humidity at 65% and approximately 127 mm (5.0 in) of precipitation over 14 days. Conversely, February brings frigid temperatures, with a chilling minimum of -16°C (4°F) and a maximum of 20°C (68°F), averaging just 2°C (36°F). It also has a higher humidity level at 82%, and while it sees slightly less precipitation at 102 mm (4.0 in) over 10 days, the cold and damp conditions create a much different atmosphere. For a deeper look into February's conditions, check out Manhattan weather in February.
August and March showcase strikingly different weather patterns. In August, temperatures range from a mild 16°C (61°F) to a sweltering 34°C (93°F), with an average of 25°C (76°F) and relatively high humidity at 65%. The month also sees substantial rainfall, with 127 mm (5.0 in) spread over 14 days. In contrast, March experiences much cooler temperatures, with a minimum of -9°C (16°F), an average of 5°C (42°F), and a maximum of 25°C (77°F). While it receives slightly less rainfall at 98 mm (3.8 in) over 10 days, the humidity is higher at 81%. This distinct seasonal shift highlights the transition from winter's chill in March to the heat of summer in August. For more details on March's climate, you can visit Manhattan weather in March.
August and April present distinctly different weather patterns. In August, temperatures range from a comfortable 16°C (61°F) to a warm high of 34°C (93°F), with an average of 25°C (76°F). The month sees significant rainfall, with 127 mm (5.0 in) falling over 14 days and a moderate humidity level of 65%. In contrast, April experiences much cooler temperatures, starting at a chilly minimum of -1°C (31°F) and peaking at 27°C (82°F), averaging around 11°C (52°F). While precipitation is slightly lower at 112 mm (4.4 in) over 12 days, the humidity is higher at 78%, contributing to a damp feel. For more details on April weather in Manhattan, you can check this link: Manhattan weather in April.
August weather is significantly warmer than May, with average temperatures reaching 25°C (76°F) compared to May's 17°C (62°F). The maximum temperatures in August can soar up to 34°C (93°F), while May peaks at 31°C (88°F). Both months experience a similar amount of precipitation, with August averaging 127 mm (5.0 in) over 14 days and May slightly lower at 114 mm (4.5 in) over 13 days. Interestingly, humidity levels are slightly lower in August at 65%, compared to May’s 69%. For more detailed insights, you can check Manhattan weather in May.
In June, the weather is generally milder, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 35°C (94°F) and an average of 22°C (72°F). Precipitation is relatively low at 92 mm (3.6 in) over 13 days, while humidity sits at 69%. In contrast, August experiences warmer conditions, with temperatures between 16°C (61°F) and 34°C (93°F), averaging 25°C (76°F). The month is also wetter, with a total precipitation of 127 mm (5.0 in) spread over 14 days and humidity at 65%. For a more detailed look at June weather, you can visit Manhattan weather in June.
When comparing the weather in August to that of July, we observe a slight decrease in average temperatures, with August averaging 25°C (76°F) compared to July's 26°C (78°F). Both months experience warm conditions, but August has a lower maximum temperature of 34°C (93°F) compared to July's peak of 36°C (96°F). Precipitation levels are also lower in August, totaling 127 mm (5.0 in) over 14 days, while July sees 148 mm (5.8 in) over 13 days. Interestingly, August tends to be a bit more humid with an average humidity of 65% versus 62% in July. For a more detailed look at July's conditions, you can check out Manhattan weather in July.
August experiences warmer weather with an average temperature of 25°C (76°F), peaking at a high of 34°C (93°F), while September sees a drop in the average to 21°C (70°F) and a minimum temperature of 9°C (49°F). While August is characterized by more precipitation at 127 mm (5.0 in) over 14 days, September has lighter rainfall totaling 92 mm (3.6 in) across 9 days. Additionally, the humidity remains relatively similar, slightly increasing in September to 68% compared to 65% in August. For a detailed look at September weather, you can explore Manhattan weather in September.
August typically features warmer temperatures, with averages around 25°C (76°F) and maximums reaching up to 34°C (93°F), while October sees a significant drop, averaging only 16°C (61°F) and a minimum temperature of 4°C (39°F). Both months experience similar levels of precipitation—127 mm (5.0 in) in August versus 128 mm (5.0 in) in October—but August tends to be wetter with rain falling over 14 days compared to just 10 days in October. Interestingly, October's humidity is higher at 74%, compared to August's 65%, leading to a feeling of chill in the air as the season transitions. For more details on the weather in October, check out Manhattan weather in October.
August and November present stark contrasts in weather. August boasts a warm climate with average temperatures around 25°C (76°F), peaking at 34°C (93°F), and is characterized by moderate rainfall of 127 mm (5.0 in) over 14 days; the humidity level sits at a comfortable 65%. In contrast, November experiences much cooler weather, with average temperatures declining to 8°C (47°F), ranging from a minimum of -9°C (17°F) to a maximum of 24°C (75°F). The precipitation decreases to 83 mm (3.3 in) over just 8 days, and humidity climbs to 82%, making the air feel quite different. For a more detailed look at November's weather in Manhattan, you can check Manhattan weather in November.
August and December present strikingly different weather patterns. In August, temperatures are much warmer, with average highs around 25°C (76°F) and maximums reaching 34°C (93°F), accompanied by moderate humidity at 65% and considerable precipitation of 127 mm (5.0 in) over 14 days. In contrast, December brings a dramatic chill, with average temperatures plummeting to 4°C (39°F) and minimums dipping as low as -11°C (13°F). Though precipitation is slightly less at 106 mm (4.2 in) over 10 days, humidity increases to 80%, contributing to a damp, brisk atmosphere prevalent during winter. For a more comprehensive understanding of the weather during this month, check out Manhattan weather in December.
As August rolls into Manhattan, residents and visitors alike experience a distinct seasonal charm. Characterized by warmer temperatures, the month often hits highs of 34°C (93°F), providing a stark contrast to the cooler months of spring and fall. With an average temperature of 25°C (76°F), the city buzzes with life, despite the increased humidity that lingers around 65%. Rain is not uncommon, as about half the month sees some precipitation, contributing to the lush green scenes that define late summer in the city. For those who want to delve deeper into how August weather compares with other months, check out Manhattan Climate.