Last updated: February 24, 2025
August in James Island, United States, presents a warm and humid climate, with maximum temperatures soaring to 35°C (95°F) and an average of 27°C (81°F), providing a quintessential summer experience. Nighttime brings some relief, as temperatures drop to a minimum of 21°C (70°F). However, this summer month is characterized by considerable precipitation, totaling 183 mm (7.2 in) over 21 days, contributing to a humidity level of around 81%. Visitors should be prepared for a mix of sunny days and occasional summer showers, making it essential to embrace both the heat and the refreshing rain.
In August, James Island basks in the warmth of summer, with temperatures reflecting the season's peak. The average temperature soars to 27°C (81°F), accompanied by a minimum of 21°C (70°F) and a maximum reaching 35°C (95°F). This month is characterized by a continuation of July’s trend, showcasing the island's vibrant climate as it transitions towards the cooler months. With rising temperatures and balmy evenings, August invites both locals and visitors to enjoy outdoor activities and beach days, while also hinting at the approaching shift in conditions as September arrives. The warmth in August underscores the island’s reputation as a summer paradise, where the sun often shines brightly and the atmosphere buzzes with life.
August in James Island is characterized by significant rainfall, with an average precipitation of 183 mm (7.2 in), making it one of the wettest months of the year. This trend continues from July, which records the peak of 187 mm (7.4 in) over 20 days. The summer's humidity is palpable, as August experiences 21 days of precipitation, indicating a pattern of frequent wet weather that can shape daily activities. Notably, the precipitation levels in August are only slightly lower than those of July, suggesting a robust monsoon-like climate that persists into late summer before gradually tapering off in the subsequent months. As the year progresses into September, precipitation begins to decrease, with 176 mm (6.9 in) noted over only 14 days, hinting at a transition towards drier conditions.
In August, James Island experiences a humidity level of 81%, which is slightly above the average of the warmer summer months. Following a peak in July at 80%, humidity levels stabilize in August before rising again in September. This month maintains a consistent trend observed throughout the year, where humidity tends to be higher in the late summer and early fall, reflecting the island's tropical climate. As the year progresses, there's a noticeable shift towards increased humidity, peaking at 87% in December, suggesting that while August offers a relatively moderate climate, the island prepares for a more humid winter ahead. Overall, the humid conditions in August contribute to the lush landscapes and vibrant ecosystems that characterize James Island.
In August, James Island experiences an extreme UV Index of 11, maintaining the same level of intensity seen throughout the summer months. This consistent high exposure means that the burn time is significantly reduced to just 10 minutes, making it crucial for residents and visitors to take protective measures against harmful UV rays. As we move through the year, the UV Index tends to peak in the late spring and summer, notably reaching 11 from May through August, before tapering to 9 in September. This trend highlights the importance of sun safety during these high-risk months. For more information on how to stay protected, visit James Island UV Index.
UV Risk Categories
August in James Island, United States, brings a delightful continuation of summer bliss, with 314 hours of sunshine illuminating the days. This month follows a vibrant July, which boasts the highest sunshine hours of the year at 341. While August sees a slight decline, it remains one of the sunniest periods, part of a broader trend that showcases the area's abundant sunlight from late spring through summer. The steady increase from January's 186 hours to the peak in July highlights how the region transitions into warmer months, making it an ideal time for outdoor activities and enjoying the natural beauty of the island. As summer wanes, the sunshine hours gradually decrease into September and beyond, but August stands out as a radiant bridge between the peak summer experience and the emerging fall.
In August, James Island's likelihood of sunny weather dips to 30%, reflecting a notable trend of declining sunshine as summer progresses. After the relatively brighter months of April through May, which enjoy over 50% chances of sun, the summer heat appears to take its toll, with June and July plunging further down to 29% and 34%, respectively. As August closes in, sunny spells become less frequent, hinting at a shift toward the more temperate conditions of early fall, where September sees a resurgence with a 51% chance of sunny days. This fluctuating pattern underscores August's position as a transitional month, bridging the vibrance of summer with the promise of clearer skies come September.
In August, James Island enjoys a delightful 13 hours of daylight, a continuation of the summer's abundant sunshine. The daylight begins to taper off slightly from the peak of 14 hours experienced in June and July, signaling the slow transition towards fall. This gradual decline in daylight hours is part of a broader trend that sees a consistent decrease from the heights of summer towards the shorter days of winter. As August unfolds, residents and visitors alike can relish the bright evenings, with ample time to savor the warm weather before the seasons shift.
In August, James Island experiences its calmest winds of the year, with an average speed of just 2.8 m/s (6 mph). This marks a noticeable decline from the slightly more robust breezes of earlier summer months, such as May and June, where winds averaged 4.0 m/s (9 mph) and 3.7 m/s (8 mph), respectively. The trend of decreasing wind speeds continues into September, with only a slight increase to 2.9 m/s (6 mph). As the summer wanes, the gentle August breezes provide a perfect backdrop for leisurely outdoor activities, allowing residents and visitors to enjoy the serene beauty of the island without the typical gusts that characterize other seasons. This drop in wind speed heralds the onset of fall, where the winds pick up slightly but remain relatively mild compared to the robust spring and early summer months.
The weather in James Island 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 James Island and find detailed weather information for every month.
August and January present stark contrasts in weather patterns. In August, temperatures range from a mild 21°C (70°F) at night to a scorching high of 35°C (95°F), coupled with significant rainfall of 183 mm (7.2 in) over 21 days, resulting in a humid environment with around 81% humidity. In contrast, January experiences much colder conditions, with temperatures dropping to a minimum of -13°C (9°F) and peaking at 26°C (79°F), while precipitation is notably less at 59 mm (2.3 in) over just 7 days, accompanied by higher humidity levels at 86%. For more specifics on January conditions, check out James Island weather in January.
August and February present stark contrasts in weather. August features warm temperatures with a minimum of 21°C (70°F) and an average of 27°C (81°F), peaking at a sweltering 35°C (95°F). It is also characterized by high humidity at 81% and significant rainfall, averaging 183 mm (7.2 in) over 21 days. In contrast, February experiences much cooler conditions, with temperatures ranging from a chilly minimum of -2°C (29°F) to an average of 14°C (57°F), and a maximum of 26°C (79°F). The precipitation in February is considerably lower at 78 mm (3.1 in) over just 9 days, while humidity remains at 81%. For a closer look at February weather specifics, you can visit James Island weather in February.
When comparing the weather in August and March, there is a stark contrast in temperature and precipitation. August boasts much warmer temperatures, with a minimum of 21°C (70°F) and a maximum reaching up to 35°C (95°F), while March experiences cooler conditions, starting as low as -1°C (30°F) and peaking at 28°C (82°F). Additionally, August is characterized by significantly higher precipitation, with 183 mm (7.2 in) falling over 21 days, compared to March's 60 mm (2.4 in) spread across just 6 days. Despite the differing weather conditions, both months share the same humidity level of 81%. For more details, you can check out this link: James Island weather in March.
When comparing the weather in August and April, it's clear that August tends to be much warmer and more humid. In August, temperatures range from a minimum of 21°C (70°F) to a maximum of 35°C (95°F), with an average temperature of 27°C (81°F). This month also experiences significant rainfall, with approximately 183 mm (7.2 in) of precipitation spread over 21 days, contributing to a high humidity level of 81%.
In contrast, April offers a cooler and more pleasant climate, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 31°C (89°F), and an average temperature of 19°C (66°F). Precipitation is lower in April as well, amounting to about 101 mm (4.0 in) over just 8 days, along with a slightly lower humidity of 79%. For a detailed look at the weather conditions during this month, you can visit James Island weather in April.
In comparison to May, August features considerably warmer temperatures, with average highs reaching 27°C (81°F) compared to May's average of 23°C (74°F). Additionally, August experiences more extreme fluctuations, with maximum temperatures soaring up to 35°C (95°F), whereas May can peak at 37°C (98°F). Rainfall is more frequent in August, with 183 mm (7.2 in) of precipitation over 21 days, contrasting sharply with May's 87 mm (3.4 in) spread across just 9 days. Despite having higher humidity in August at 81%, May’s humidity level is still notable at 75%. For a more detailed look at the weather conditions during that month, you can visit James Island weather in May.
In comparing the weather of August and June, August tends to be slightly warmer, with average temperatures of 27°C (81°F) compared to June's 26°C (79°F). Both months share similar maximum temperatures reaching up to 35°C (95°F), but August experiences higher humidity at 81%, in contrast to June's 75%. Precipitation also rises in August, with 183 mm (7.2 in) spread over 21 days, whereas June has 150 mm (5.9 in) across 19 days. For more detailed insights, you can visit James Island weather in June.
In comparing the weather of August and July, we find that both months exhibit warm and humid conditions typical of the summer season. August sees slightly warmer temperatures, with an average of 27°C (81°F) compared to July's average of 28°C (82°F), although the maximum temperature in August reaches 35°C (95°F) versus July's 34°C (94°F). Precipitation levels remain quite similar, with August receiving 183 mm (7.2 in) over 21 days, while July totals 187 mm (7.4 in) over 20 days. Humidity levels are also comparable, with August at 81% and July at 80%. For a more detailed look at July's weather, you can explore James Island weather in July.
August and September exhibit distinct differences in weather conditions, despite having similar maximum temperatures. August is characterized by a warmer average temperature of 27°C (81°F) and significantly higher humidity at 81%, making it feel more tropical and oppressive. Additionally, August experiences more precipitation, averaging 183 mm (7.2 in) over 21 days, resulting in a wetter month. In contrast, September sees a drop in minimum temperature to 14°C (57°F) while maintaining a similar maximum of 35°C (94°F). With an average of 26°C (78°F) and slightly less precipitation at 176 mm (6.9 in) over 14 days, September tends to feel more comfortable, though humidity increases to 83%. To explore more about the weather on James Island in September, check out James Island weather in September.
August and October showcase a striking contrast in weather patterns. August is characterized by higher temperatures, with averages around 27°C (81°F) and maximums peaking at 35°C (95°F), coupled with significant rainfall of 183 mm (7.2 in) spread over 21 days, leading to a humid atmosphere at 81%. In contrast, October experiences a notable drop in temperatures, with a minimum of 3°C (38°F) and an average of 22°C (72°F), while the maximum reaches a milder 31°C (89°F). Precipitation is markedly lower in October, at 79 mm (3.1 in) over 9 days, with humidity slightly reduced to 78%. For more detailed insights, you can explore James Island weather in October.
August and November exhibit contrasting weather patterns. August is characterized by warm temperatures, with a minimum of 21°C (70°F) and a maximum reaching up to 35°C (95°F), while November experiences much cooler temperatures, ranging from a minimum of -1°C (31°F) to a maximum of 28°C (84°F). Additionally, August has significantly higher precipitation levels, totaling 183 mm (7.2 in) over 21 days, compared to November's 92 mm (3.6 in) over just 8 days. Despite November's lower temperatures, the humidity remains relatively high at 85%, only slightly above August's 81%. For more specific insights into this month, check James Island weather in November.
August and December present markedly different weather patterns. In August, temperatures soar with a minimum of 21°C (70°F) and a maximum of 35°C (95°F), accompanied by high humidity levels at 81%. This month also sees considerable rainfall, with 183 mm (7.2 in) spread over 21 days. In contrast, December experiences much cooler temperatures, ranging from a minimum of -3°C (28°F) to a maximum of 25°C (77°F), with an average of 12°C (54°F). Additionally, the month has less precipitation at 127 mm (5.0 in), occurring over only 9 days, and a slightly higher humidity of 87%. For more detailed information about December weather, visit James Island weather in December.
August on James Island brings a distinct shift in weather patterns, characterized by warmer temperatures and increased humidity. The average temperature soars, peaking at 35°C (95°F), creating a sultry atmosphere. Unlike the drier months, this period experiences a significant uptick in precipitation, with rain gracing the island on 21 days. The combination of high humidity and frequent downpours can make the air feel even more oppressive, contrasting sharply with the milder conditions of earlier in the summer. For those looking to explore what else the weather has in store throughout the year, visiting the James Island Climate page will provide comprehensive insights.