Last updated: February 24, 2025
In August, Sitka, United States experiences a blend of mild temperatures and significant rainfall, making it a unique time of year. With a maximum temperature reaching 25°C (77°F) and an average of 13°C (56°F), visitors can enjoy comfortable summer days. However, the cool nights can dip to a minimum of 7°C (45°F). This month is marked by 201 mm (7.9 in) of precipitation spread across 20 days, resulting in a humid atmosphere, often hovering around 100% humidity. Despite the rain, the lush landscapes and vibrant natural beauty are at their peak, enchanting those who venture to experience Sitka's summer charm.
In August, Sitka experiences a delightful transition as summer wanes, with temperatures generally on the rise compared to the previous months. Minimums hover around 7°C (45°F), while average temperatures reach a comfortable 13°C (56°F), peaking at a warm 25°C (77°F). This month clearly stands out as one of the warmest, showcasing a significant increase from the cooler early summer and late spring months. The trend towards milder weather is a refreshing respite before fall sets in, inviting both locals and visitors to enjoy the vibrant outdoors amid the lush Alaskan scenery. With a mix of sunny days and cooler evenings, August in Sitka offers a perfect backdrop for adventure and exploration before the return of autumn's chill.
In August, Sitka experiences a significant uptick in precipitation, registering 201 mm (7.9 in) across 20 days of the month. This marks a notable rise from the drier July, which saw only 112 mm (4.4 in). The summer season shows a clear trend of increasing rainfall, as August's moisture levels set the stage for the wetter months ahead. As autumn approaches, this surge in precipitation hints at the more robust rainfalls of September and October, which average 224 mm (8.8 in) and 276 mm (10.9 in) respectively. The pattern showcases a seasonal transition characterized by heavier and more frequent rain, reinforcing Sitka's reputation for lush landscapes and vibrant ecosystems amid its stunning natural beauty.
In Sitka, United States, August marks a peak in humidity levels, consistently reaching a notable 100%. This soaring figure is reflective of the overall trend throughout the summer months, as humidity escalates from 88% in May to 95% in June and an impressive 101% in July. Following this summer surge, humidity levels begin to taper off in September, settling at 94%, before gradually decreasing in the cooler months. The bustling summer climate, characterized by high humidity, contrasts with the relatively steady figures of the winter months, hovering around the mid-80s to high-80s. This cyclical pattern encapsulates Sitka's rich, moisture-laden environment, fostering a unique and vibrant natural habitat.
In August, Sitka experiences a high UV Index of 7, similar to July's levels, which means that sun exposure can lead to skin damage in just 25 minutes. As summer peaks, the consistent high UV ratings from May to August highlight an increasing risk for sunburn, reinforcing the importance of protective measures like sunscreen and shade. This trend contrasts sharply with the low UV conditions seen in winter months, where the Index drops significantly to 1 by January and remains low through March. Understanding these fluctuations is crucial for residents and visitors alike to enjoy the beautiful Alaskan summer safely. For more details, check the Sitka UV Index.
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August in Sitka bathes in abundant sunshine, with approximately 212 hours of golden light warming the landscape. This month showcases a gentle decline in daylight compared to the summer peak of 222 hours in June and July, but it still outshines the earlier months of the year. As summer winds down, the sunshine hours are gradually tapering off from their highs, following a clear upward trend from January's mere 44 hours. The gradual increase from winter to summer is remarkable, making August a delightful time to experience Sitka's natural beauty before the fall transition sets in, where September still holds onto 185 hours of sunshine, yet hints at the impending darker months ahead.
In Sitka, United States, the prospects for sunny weather in August hover around a modest 17%. This figure fits within a broader trend of fluctuating sunshine chances throughout the year. Notably, February stands out with the highest likelihood at 34%, while many summer months, including June and July, fall short, offering only 24% and 18% sunshine, respectively. Interestingly, August's sunshine probability dips slightly below these mid-summer months, reflecting a shift toward the approaching fall. As the year progresses, the chance for sunny days generally wanes, with September and October trailing behind at 10% and 16%. Thus, if you're hoping for clear skies in August, it's best to manage your expectations while embracing the beauty of Sitka's varied weather.
In August, Sitka, United States, enjoys a delightful 15 hours of daylight, marking a gradual decline from the peak of 17 hours experienced in the summer months of June and July. This transition from the vibrant long days of summer to the shorter days of fall is a reminder of nature's rhythm. As daylight hours decrease, the landscape shifts, inviting residents and visitors alike to savor the warm, golden hues of late summer evenings before the sun sets earlier in September, with a subsequent drop to 12 hours. This gradual ebb of daylight carries with it a sense of change, as Sitka prepares to embrace the cozy, introspective months ahead.
In Sitka, United States, August brings a gentle increase in average wind speed, measuring 3.2 m/s (7 mph). This marks a slight rise from the calmer summer months of June and July, where winds hovered at around 2.6 to 2.8 m/s. As summer transitions to fall, Sitka experiences a trend of increasing wind speeds, particularly notable in September at 3.9 m/s. While August maintains a refreshing breeze suitable for outdoor activities, it hints at the upcoming shift, as winter approaches with average speeds beginning to climb again in October. This gradual ebb and flow of winds throughout the year paints a picture of Sitka’s dynamic maritime climate, where even the slightest shifts in wind speed reflect the change of seasons.
The weather in Sitka 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 Sitka and find detailed weather information for every month.
August and January in Sitka present a stark contrast in weather conditions. In August, temperatures range from a mild 7°C (45°F) at night to a pleasant 25°C (77°F) during the day, with consistent humidity levels reaching a staggering 100%. The month encounters considerable rainfall, totaling 201 mm (7.9 inches) over approximately 20 days. Conversely, January experiences a chillier climate, with temperatures fluctuating between a frosty -17°C (2°F) and a maximum of 13°C (56°F) and average temperatures hovering around 1°C (33°F). While January also sees substantial precipitation at 219 mm (8.6 inches) across 18 days, the humidity is lower at 87%. For more details on January weather conditions, you can visit Sitka weather in January.
When comparing the weather in August and February, it's clear that the two months present stark contrasts. August generally offers milder temperatures, with an average of 13°C (56°F) and highs reaching up to 25°C (77°F), accompanied by frequent rain and high humidity at 100%. In contrast, February is much colder, with average temperatures hovering around 0°C (32°F), and highs only reaching a maximum of 9°C (48°F). While February receives slightly less precipitation at 179 mm (7.0 in) compared to August's 201 mm (7.9 in), it has fewer rainy days at 15 compared to August's 20. For more details about February’s weather in Sitka, click here: Sitka weather in February.
August and March present starkly contrasting weather conditions. In August, temperatures range from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). The month is characterized by high humidity at 100% and significant rainfall, totaling 201 mm (7.9 in) over 20 days. In contrast, March experiences much colder temperatures, with a minimum of -13°C (9°F) and a maximum of 11°C (52°F), yielding an average of just 1°C (35°F). Although March sees slightly less precipitation at 179 mm (7.0 in) across 18 days, it has a considerably lower humidity level at 83%. For those interested in more details, here's a link to Sitka weather in March.
When comparing the weather in August and April, it's clear that August is significantly warmer, with temperatures reaching a maximum of 25°C (77°F) compared to April's peak of 14°C (57°F). While both months experience substantial precipitation, August has a higher total of 201 mm (7.9 in) over 20 days, whereas April sees 174 mm (6.9 in) over 18 days. Additionally, August maintains a much higher humidity level at 100%, in contrast to April's 83%. For more detailed information about the weather in April, you can check Sitka weather in April.
The weather in August is typically warmer and more humid compared to May. August boasts an average temperature of 13°C (56°F) and a maximum of 25°C (77°F), while May's temperatures are cooler, with an average of 8°C (46°F) and a maximum of 20°C (68°F). Additionally, August experiences significantly higher precipitation, with 201 mm (7.9 in) over 20 days, compared to May's 124 mm (4.9 in) across 19 days. The humidity in August reaches an extreme 100%, while in May, it is a more comfortable 88%. For those interested in the details of May's climate, you can explore Sitka weather in May.
In comparing the weather of August and June, it's evident that August is generally warmer and wetter. August sees temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), with an average temperature of 13°C (56°F). In contrast, June has slightly cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 21°C (71°F), averaging around 10°C (51°F).
Precipitation levels are also higher in August, with 201 mm (7.9 in) falling over 20 days, compared to June's 137 mm (5.4 in) over the same number of days. Additionally, humidity in August reaches a steamy 100%, surpassing June's 95%. For more detailed insights into the weather during this month, you can explore Sitka weather in June.
In August, temperatures see a slight shift with a minimum of 7°C (45°F) and a maximum of 25°C (77°F), maintaining an average temperature of 13°C (56°F). The month also experiences significantly higher precipitation, totaling 201 mm (7.9 in) over 20 days, coupled with high humidity levels at 100%. In contrast, July presents a more stable climate, with a minimum of 9°C (48°F), a maximum of 22°C (72°F), and an average of 13°C (55°F). July's precipitation is lower at 112 mm (4.4 in) across 15 days, and humidity slightly surpasses that of August at 101%. For a detailed look at July weather in Sitka, you can check Sitka weather in July.
August and September showcase a transition in weather patterns, with September being slightly cooler and wetter. In August, the temperatures range from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). The month experiences 201 mm (7.9 in) of precipitation over 20 days, accompanied by high humidity levels at 100%. In contrast, September sees a further drop in temperatures, with a minimum of 5°C (42°F), an average of 11°C (52°F), and a maximum of 21°C (70°F). It experiences even more precipitation, totaling 224 mm (8.8 in) over 17 days, while humidity decreases slightly to 94%. For more detailed insights into September weather, visit Sitka weather in September.
August and October present contrasting weather patterns, highlighting the transition from summer to autumn. August boasts milder temperatures, with a minimum of 7°C (45°F) and a maximum of 25°C (77°F), while October sees a significant drop, with the minimum plunging to -3°C (28°F) and a maximum of just 16°C (60°F). Precipitation levels also differ; August receives 201 mm (7.9 in) over 20 days, whereas October experiences even heavier rain with 276 mm (10.9 in) over 22 days. Additionally, humidity remains high in August at 100%, but decreases slightly to 87% in October. For more detailed insights, you can check Sitka weather in October.
In August, the weather is relatively mild, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F) and an average of 13°C (56°F). However, it experiences high levels of precipitation, totaling 201 mm (7.9 in) over about 20 days, accompanied by 100% humidity, creating a damp atmosphere. In contrast, November sees much colder conditions, with temperatures dipping to a minimum of -6°C (21°F) and an average of 4°C (39°F), peaking at 12°C (54°F). This month also brings higher precipitation levels, with 284 mm (11.2 in) spread across approximately 23 days, although humidity is slightly lower at 85%. For more detailed information, you can check Sitka weather in November.
August and December present stark contrasts in weather. In August, temperatures range from a mild 7°C (45°F) at night to a warm 25°C (77°F) during the day, accompanied by high humidity at 100% and significant rainfall of 201 mm (7.9 in) spread over 20 days. In contrast, December experiences much colder conditions, with temperatures plummeting to a minimum of -14°C (7°F) and an average of only 2°C (36°F), peaking at 10°C (50°F). The month is characterized by even higher precipitation levels of 293 mm (11.5 in) over 22 days, albeit with lower humidity at 87%. For more detailed information about the winter climate, check out Sitka weather in December.
August in Sitka marks a transition into cooler temperatures and increased rainfall, making it distinct from the sunnier, drier months of summer. With the average temperature dropping to a refreshing 13°C (56°F) and notable precipitation occurring on about 20 days, visitors can expect to experience the island's lush greenery at its peak. The high humidity of 100% contributes to a vibrant landscape, but also presents a more challenging climate for outdoor activities compared to the earlier summer months. For those planning a visit, understanding this shift in weather is crucial; be sure to check the details and plan accordingly at Sitka Climate.