Last updated: February 24, 2025
In August, Port Jefferson experiences a pleasant summer climate, with maximum temperatures reaching around 31°C (88°F) and an average of 24°C (75°F), perfect for enjoying outdoor activities. However, evenings can be mild, dipping to a comfortable minimum of 16°C (61°F). This month also sees about 103 mm (4.0 inches) of precipitation across approximately 11 days, contributing to a relative humidity of 65%. Overall, while occasional rain showers may occur, the warmth and vibrancy of the season still make August a delightful time to explore this charming coastal town.
In August, Port Jefferson experiences a delightful peak in summer temperatures, with minimums resting comfortably at 16°C (61°F) and average highs reaching a warm 24°C (75°F). As the month progresses, the warmth escalates, peaking at a maximum of 31°C (88°F), making it one of the hottest months of the year. This trend reflects a gradual increase from earlier months, where July's highs were slightly higher at 33°C (91°F), yet August maintains a cozy warmth that invites outdoor activities and coastal enjoyment. As summer wanes, September will bring cooling relief, underscoring the vibrant transitional climate of the region.
In August, Port Jefferson experiences a notable rainfall total of 103 mm (4.0 inches) across approximately 11 days of precipitation. This month's precipitation is slightly lower than July's, which saw a hefty 131 mm (5.2 inches), yet remains consistent with the late summer trend of moderate rainfall. As the region transitions from the summer heat into autumn, the relatively stable precipitation levels in August, compared to earlier months, indicate a steady climate pattern that sets the stage for the wetter months ahead, particularly October, which historically brings an average of 143 mm (5.6 inches). This blend of summer remnants and early autumn moisture underscores Port Jefferson's dynamic weather patterns throughout the year.
In August, Port Jefferson experiences a moderate humidity level of 65%, marking a slight uptick from the low of 62% recorded in July. This trend reflects a gradual rise toward the fall months, as humidity tends to increase again in September with levels reaching 68%. Observing the year's progression, humidity remains highest during the winter months, peaking in January at 84%, and gradually decreasing until summer. As the seasons transition, August serves as a pivotal point where summer warmth meets the cooler, more humid conditions of autumn, creating a dynamic humidity profile that defines Port Jefferson's climate.
In August, Port Jefferson experiences a UV Index of 9, indicating a very high exposure category that carries a burn time of just 15 minutes. This trend follows the previous month, July, which also had a UV Index of 9, showcasing the intense summer sun that characterizes this period. As we move into September, the UV Index slightly decreases to 8, but remains in the very high category. This sequence underscores a consistent risk of UV exposure during the summer months, particularly from May through September, where burn times drop significantly. It's essential for residents and visitors to stay vigilant and protect their skin during this peak season. For more information, visit Port Jefferson UV Index.
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As August unfolds in Port Jefferson, residents enjoy an impressive 323 hours of sunshine, contributing to an overall trend of bright, long days during the summer months. Following July’s peak at 343 hours, August matches the vibrant energy of the season, showcasing the area's commitment to sunny skies. This month, while slightly cooler, still holds strong in contrast to the grayer winter months where January only offers 154 hours. The steady increase in sunlight from January through July highlights the region's warm transition into autumn, with sunshine gradually tapering off in September to 282 hours. Overall, the uplifting summer radiance of Port Jefferson remains a highlight, making August a perfect time for outdoor activities and enjoying the beauty of the coastal town.
In Port Jefferson, August brings a modest 32% chance of sunny weather, a dip compared to the summer months. This aligns with the overall trend of decreasing sunshine, as the lush days of July maintain a 41% probability, indicating that while summer is still in full swing, it's not the sunniest time of the year. Interestingly, this figure is significantly lower than earlier months like March, which boasts a healthy 58%, suggesting that the peak of sunny days starts to fade as summer progresses into late August. The data hints at a transition towards the more variable weather patterns typical of autumn, making it a month of mixed expectations for sun lovers.
As summer transitions into autumn in Port Jefferson, August offers 13 hours of daylight, marking a slight decrease from the previous month. This month is a pivotal bridge between the prolonged daylight of June (15 hours) and the gradual retreat into shorter days that follows in September (12 hours). The daylight duration peaks in June, allowing residents to bask in the sun's warmth, but August signifies a gradual shift towards the cozy ambiance of fall. Notably, while daylight hours begin to dwindle, they still afford ample opportunity to enjoy outdoor activities and the lingering summer heat, captivating the essence of late summer before the days begin to shorten more significantly as autumn approaches.
In Port Jefferson, August marks the continuation of a gentle breeze, with average wind speeds settling at 3.4 m/s (8 mph), identical to July's serene conditions. This period of calm winds reflects a noticeable trend as summer winds gradually ease compared to the brisker autumn and winter months. With each passing month, from January's robust 5.0 m/s to August's tranquil 3.4 m/s, the transition highlights a pattern of diminishing wind speeds as the region shifts from the higher gusts of early winter into the softer breaths of summer. As September approaches, a slight increase in wind speed beckons—hinting at the changing seasons ahead—yet August's calm serves as a perfect backdrop for leisurely days by the water.
The weather in Port Jefferson 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 Port Jefferson and find detailed weather information for every month.
August and January present stark contrasts in weather conditions. In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F), accompanied by moderate humidity at 65%. This month experiences around 103 mm (4.0 in) of precipitation over 11 days. In contrast, January sees much colder temperatures, with a minimum of -15°C (6°F) and a maximum of only 15°C (60°F), averaging just 2°C (35°F). The month is characterized by higher humidity at 84% and less precipitation, totaling 80 mm (3.1 in) over 8 days. For more details on January weather specifics, check out Port Jefferson weather in January.
In August, temperatures are quite warm, with a minimum of 16°C (61°F) and an average of 24°C (75°F), peaking at 31°C (88°F). The month experiences moderate precipitation of 103 mm (4.0 inches) over 11 rainy days, with humidity averaging around 65%. In contrast, February's weather is significantly colder, featuring a minimum temperature of -15°C (6°F) and an average of just 2°C (36°F), with a maximum of 15°C (58°F). Despite the chill, February sees slightly more precipitation at 112 mm (4.4 inches) over 12 days, coupled with higher humidity at 82%. For more detailed information about February's weather, you can check Port Jefferson weather in February.
August and March present strikingly different weather patterns. In August, temperatures generally range from a mild 16°C (61°F) at night to a warm 31°C (88°F) during the day, with an average of 24°C (75°F). This month experiences a moderate level of precipitation at 103 mm (4.0 in) over approximately 11 days, coupled with a humidity level around 65%. In contrast, March sees much cooler temperatures, with lows plunging to -8°C (17°F) and a daytime peak of 19°C (67°F), averaging only 4°C (40°F). Despite similar precipitation levels—104 mm (4.1 in) over 10 days—March has higher humidity at 81%, which can make the cold feel even more biting. For a more detailed look at weather specifics, you can refer to Port Jefferson weather in March.
August and April present contrasting weather conditions. In August, temperatures are significantly warmer, with a minimum of 16°C (61°F) and an average of 24°C (75°F), reaching a maximum of 31°C (88°F). In comparison, April experiences much cooler temperatures, ranging from a minimum of -1°C (31°F) to an average of 9°C (49°F), with a maximum of 22°C (71°F). Rainfall is notable in both months, but April receives slightly more precipitation, totaling 132 mm (5.2 in) over 12 days, while August has 103 mm (4.0 in) across 11 days. Additionally, humidity is higher in April at 78%, compared to 65% in August. For more details on Port Jefferson's weather during April, visit Port Jefferson weather in April.
When comparing the weather in August and May, we observe notable differences in temperature and precipitation. August typically experiences warmer temperatures, with a minimum of 16°C (61°F), an average of 24°C (75°F), and a maximum of 31°C (88°F). In contrast, May is significantly cooler, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 26°C (79°F) and an average of 14°C (58°F). Interestingly, while August sees 103 mm (4.0 in) of precipitation over about 11 days, May has slightly higher precipitation of 119 mm (4.7 in) spread over 13 days. Humidity levels are also comparable, with August at 65% and May slightly higher at 69%. For more detailed weather insights, you can check Port Jefferson weather in May.
When comparing the weather in August and June, it’s clear that August tends to be warmer and more humid. The minimum temperature in August is 16°C (61°F), compared to June's cooler 10°C (50°F), with August's average temperature peaking at 24°C (75°F) versus June's 20°C (68°F). The maximum temperatures are also higher in August, reaching up to 31°C (88°F), while June sees a maximum of only 29°C (85°F). Precipitation is slightly higher in August, with 103 mm (4.0 in) over 11 days, compared to June's 87 mm (3.4 in) over 9 days. Interestingly, June has a higher humidity level at 69%, while August averages 65%. For a detailed look at June weather in Port Jefferson, you can check this link: Port Jefferson weather in June.
The weather in August and July shows some interesting similarities and differences. Both months have comparable minimum temperatures, with August at 16°C (61°F) and July slightly cooler at 16°C (60°F). The average temperatures remain consistent, averaging 24°C (75°F) in both months, while the maximum temperature in July peaks at 33°C (91°F), making it slightly warmer than August's maximum of 31°C (88°F). In terms of precipitation, July is wetter, receiving 131 mm (5.2 in) over 12 days, compared to August's 103 mm (4.0 in) over 11 days. Humidity levels are slightly higher in August at 65%, while July sees a more moderate 62%. For a more in-depth analysis, you can check Port Jefferson weather in July.
August tends to be warmer than September, with average temperatures reaching 24°C (75°F) compared to September’s 21°C (70°F). The maximum temperature in August can soar to 31°C (88°F), while September sees a slightly lower peak of 30°C (87°F). Both months experience a fair amount of precipitation, with 103 mm (4.0 in) recorded in August over 11 days, while September has 94 mm (3.7 in) over just 10 days. Humidity levels are also fairly similar, with August at 65% and September slightly higher at 68%. For more details, you can check Port Jefferson weather in September.
In August, the weather is typically warmer, with average temperatures around 24°C (75°F) and maximums reaching up to 31°C (88°F). This month also experiences significant humidity at 65%, along with considerable rainfall totaling 103 mm (4.0 in) over approximately 11 days. In contrast, October sees a notable drop in temperatures, with averages falling to 16°C (61°F) and minimums dipping to 5°C (41°F). While it remains relatively warm, maximum temperatures can still reach 29°C (84°F). October experiences slightly higher precipitation levels at 143 mm (5.6 in) over 12 days and increased humidity at 74%. For more specific details on the conditions in October, check out Port Jefferson weather in October.
August and November present strikingly different weather patterns. August enjoys warmer temperatures, with a minimum of 16°C (61°F) and an average of 24°C (75°F), peaking at a high of 31°C (88°F). In contrast, November experiences a more frigid climate, with minimum temperatures dropping to -6°C (21°F) and an average of only 9°C (49°F), though it can reach a maximum of 21°C (70°F). Both months receive similar levels of precipitation, at 103 mm (4.0 in), but August has more rainy days (11) compared to November's 9 days. Additionally, November's humidity is higher at 82%, compared to August's 65%. For more detailed information on November weather, visit Port Jefferson weather in November.
The weather in August is markedly warmer and more humid compared to December. With temperatures ranging from a minimum of 16°C (61°F) to a maximum of 31°C (88°F) and an average of 24°C (75°F), August offers a relatively pleasant atmosphere, despite receiving 103 mm (4.0 in) of precipitation over 11 days. In contrast, December's temperatures drop significantly, with a minimum of -10°C (15°F) and a maximum of 17°C (62°F), leading to an average of just 5°C (40°F). This month also sees increased humidity at 80% and slightly higher precipitation of 140 mm (5.5 in) over the same number of days. For more details on December weather, you can visit Port Jefferson weather in December.
August in Port Jefferson offers a vibrant blend of warm temperatures and refreshing ocean breezes, setting it apart from the cooler months of the year. With an average temperature hovering around a comfortable 24°C (75°F), residents and visitors can bask in the warmth during this peak summer month. While the humidity rises to 65%, the occasional rainfall—spreading over approximately 11 days—brings much-needed respite from the heat, totaling around 103 mm for the month. This combination of warmth and sporadic showers creates a lively, inviting atmosphere perfect for outdoor activities and enjoying the seasonal beauty. To explore more about the weather patterns throughout the year, check out Port Jefferson Climate.