August Weather in Bainbridge Island, United States

Last updated: February 24, 2025

August in Bainbridge Island, United States, is characterized by warm temperatures that can peak at a scorching 34°C (93°F), while averaging a pleasant 19°C (67°F). The nights are refreshing with temperatures dropping to a comfortable 12°C (54°F). Visitors can expect a sprinkle of rain, with 25 mm (1.0 in) of precipitation over an average of 7 days, resulting in a humidity level of 73%. This blend of warmth and occasional showers creates an inviting atmosphere perfect for exploring the island's natural beauty and vibrant community.

August Temperature in Bainbridge Island

In August, Bainbridge Island experiences a delightful peak in summer warmth, with temperatures showcasing a significant rise from earlier months. The minimum temperature hovers around 12°C (54°F), while the average climbs to a cozy 19°C (67°F). The island can really turn up the heat, with maximum temperatures soaring to 34°C (93°F), making it the hottest month of the year. This transition from cooler spring temperatures to the sultry summer peak not only encourages outdoor activities but also paints a vibrant scene of lush greenery and bustling shores as residents and visitors bask in the sunny embrace of late summer. The warm evenings are perfect for alfresco dining and stargazing, solidifying August as a highlight of the Bainbridge Island experience.

August Weather in Bainbridge Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Bainbridge Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434146505661666661534843
Data source: Temperature data for Bainbridge Island 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 Bainbridge Island

In August, Bainbridge Island experiences a notable dip in precipitation, receiving only 25 mm (1.0 in) of rainfall, which mirrors July's light showers. This pattern of reduced moisture marks the region’s transition into late summer, with residents enjoying an average of just 7 days of rain. As the driest month of the year, August showcases a significant contrast to the wetter months that bookend it; for instance, January and November bring substantial rainfall with 163 mm (6.4 in) and 168 mm (6.6 in), respectively. This seasonal fluctuation underscores Bainbridge Island's lush environment, fueled by the heavier downpours of autumn and winter, while offering a brief respite in the height of summer.

August Precipitation Trends in Bainbridge Island

The chart displays monthly precipitation patterns in Bainbridge Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec163142111966965262584136168179
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Bainbridge Island

In August, Bainbridge Island experiences a noticeable shift in humidity, dropping to 73%—the lowest level of the year. This decline marks a gradual trend from the high humidity levels seen in the earlier months, starting from 86% in January and tapering off through the summer. As the region transitions into fall, humidity begins to creep back up, reaching 74% in September and rising steadily to 83% in October. This fluctuation highlights Bainbridge Island's characteristic damp climate, where the peak summer warmth is often accompanied by a refreshing drop in moisture, offering a brief respite before the inevitable return of the wetter months.

August Average Humidity in Bainbridge Island

This chart illustrates the average monthly humidity levels in Bainbridge Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Bainbridge Island

In August, Bainbridge Island experiences a UV Index of 8, placing it in the very high exposure category. With a burn time as short as 15 minutes, this month signals the continuation of the intense summer sun, following the peak indices of 9 observed in both June and July. As the summer winds down, there is a slight dip in UV levels, yet caution remains essential for outdoor activities, particularly in the absence of protective measures. After August, the UV index gradually decreases, indicating a shift towards milder months ahead. Whether you’re lounging on the beach or exploring local trails, it's important to stay informed about the UV risks. For more details on UV levels throughout the year, visit Bainbridge Island UV Index.

Maximum UV Index Levels in Bainbridge Island for August

The chart shows the monthly maximum UV Index (UVI) for Bainbridge Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Bainbridge Island 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 Bainbridge Island

August in Bainbridge Island brings a delightful conclusion to the summer, basking in 330 hours of sunshine. This trend reflects the region's peak summer warmth, following a robust July that boasts an impressive 361 hours. The sunny days of August are a reminder of the blossoming spring and lively summer that precedes the gentle transition into fall. As the days begin to shorten in September, with sunshine dipping to 254 hours, it’s clear that summer’s bright embrace begins to fade, yet August stands as a vibrant highlight in Bainbridge Island’s annual weather tale. Whether you’re soaking in the sun at the beach or enjoying outdoor adventures, this month encapsulates the very best of summer’s radiant charm.

Monthly Sunshine Duration in Bainbridge Island: August Highlighted

The August sunshine duration represents the total number of hours Bainbridge Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec80h123h199h229h299h311h361h330h254h190h114h93h
Data source: Bainbridge Island August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bainbridge Island During August

In Bainbridge Island, the likelihood of sunny weather sees a noticeable shift as the summer months approach, culminating in August with a 49% chance of sunshine. Following a steady climb from 30% in March to 67% in July, August marks a slight decline but remains among the higher probabilities of the year. This trend indicates that after the long, gray winter months, residents can look forward to enjoying nearly half of August under clear skies. As the summer wanes into September, the chance of sun dips to 36%, highlighting the importance of seizing those sunny August days before the fall sets in. Overall, August provides a delightful window for sun seekers on Bainbridge Island, balancing warmth and light as summer begins to transition into autumn.

Percentage of Sunny Days in August in Bainbridge Island

The chart illustrates the percentage of sunny days in Bainbridge Island 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 Bainbridge Island experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%20%30%50%38%58%67%49%37%25%15%14%
Data source: Bainbridge Island August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bainbridge Island in August

In August, Bainbridge Island basks in about 14 hours of daylight, marking a gentle transition from the peak summer brightness of July, which enjoys a maximum of 15 hours. This gradual decline reflects the shifting seasons, as the long, sun-drenched days of late spring and early summer taper off. Following the vibrant energy of July, August still offers ample time for outdoor adventures and soaking up the last rays of summer before the daylight diminishes further in September to 12 hours. As the year progresses, the trend shows a steady decrease in daylight, emphasizing the natural rhythm of the seasons that defines life on the island.

Average Daylight Hours in Bainbridge Island for August

The chart illustrates the variation in daylight duration in Bainbridge Island throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 53m10h 15m11h 57m13h 41m15h 10m15h 55m15h 30m14h 10m12h 29m10h 46m9h 14m8h 27m
Data source: Bainbridge Island daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Bainbridge Island

In Bainbridge Island, the month of August ushers in a slight uptick in wind speed, averaging 2.3 m/s (5 mph), a gentle breeze that complements the island's warm summer atmosphere. This marks a subtle rebound from the slowest winds of July, which reached only 2.1 m/s (5 mph). Notably, the summer months demonstrate a trend of decreased wind speeds, with April through July averaging around 2.6 m/s (6 mph). As summer gives way to fall, September sees a modest increase to 2.9 m/s (6 mph), hinting at the approaching seasonal shifts. Overall, August maintains the pattern of calm winds typical for the warmer months, setting the stage for the brisker conditions that will follow in the fall.

Average August Wind Speed in Bainbridge Island

The chart displays monthly wind speed patterns in Bainbridge Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.23.02.62.62.62.12.3 m/s2.93.64.24.0
Data source: Bainbridge Island August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Bainbridge Island Compares to Other Months

The weather in Bainbridge 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 Bainbridge Island and find detailed weather information for every month.

August and January present stark contrasts in weather. In August, temperatures soar with a minimum of 12°C (54°F) and a maximum of 34°C (93°F), averaging around 19°C (67°F). This summer month also sees relatively low precipitation at 25 mm (1.0 in), occurring over about 7 days, with humidity at 73%. In contrast, January experiences much colder conditions, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 14°C (57°F), averaging just 6°C (44°F). This winter month is much wetter, with a total precipitation of 163 mm (6.4 in) spread over 16 days, and humidity levels are higher at 86%. For more detailed insights, check out Bainbridge Island weather in January.

August and February present starkly contrasting weather conditions. In August, temperatures range from a milder minimum of 12°C (54°F) to a warm maximum of 34°C (93°F), with an average of 19°C (67°F). Precipitation is relatively low at 25 mm (1.0 in), spread over about 7 days, and humidity levels sit at a comfortable 73%. In contrast, February brings much colder temperatures, with a minimum of -5°C (24°F) and a maximum of just 13°C (55°F), averaging around 5°C (42°F). This month experiences significantly higher precipitation, totaling 142 mm (5.6 in) over 20 days, and a high humidity level of 84%. For a deeper dive into February weather specifics, you can refer to Bainbridge Island weather in February.

When comparing the weather in August and March, there are significant differences in temperature, precipitation, and humidity. August typically features warmer temperatures with a minimum of 12°C (54°F) and a maximum of 34°C (93°F), averaging around 19°C (67°F). In contrast, March is much cooler, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 22°C (71°F), averaging only 8°C (46°F). Additionally, August experiences relatively low precipitation at 25 mm (1.0 in) over 7 days, while March is much wetter, with 111 mm (4.4 in) of rain over 17 days. The humidity is also higher in March at 85%, compared to 73% in August. For more detailed insights, you can visit Bainbridge Island weather in March.

When comparing the weather in August and April, it's clear that August tends to be significantly warmer and drier. August experiences a minimum temperature of 12°C (54°F) and can peak at a sweltering 34°C (93°F), with an average of 19°C (67°F). The month sees only 25 mm (1.0 in) of precipitation over just 7 days, along with a relatively moderate humidity of 73%. In contrast, April is much cooler, with a minimum temperature of 2°C (36°F) and a maximum of 21°C (70°F), resulting in an average of 10°C (50°F). April also witnesses a higher rainfall of 96 mm (3.8 in) spread over 15 days, and maintains a higher humidity level of 83%. For more details on April weather, you can check Bainbridge Island weather in April.

When comparing the weather in August and May, a notable difference is observed in temperature ranges and precipitation. August typically enjoys warmer conditions, with average temperatures hovering around 19°C (67°F) and maximums reaching up to 34°C (93°F). In contrast, May is cooler, with an average temperature of 13°C (56°F) and maximums only reaching 25°C (77°F). Additionally, May experiences significantly more rainfall, with 69 mm (2.7 in) and precipitation on 12 days, compared to August's milder 25 mm (1.0 in) over just 7 days. Humidity levels are also higher in May at 84%, while August's humidity averages around 73%. For a more detailed look at the conditions during May, visit Bainbridge Island weather in May.

August typically experiences warmer temperatures compared to June, with a minimum temperature of 12°C (54°F) and an average of 19°C (67°F), peaking at 34°C (93°F). In contrast, June's temperatures range from a minimum of 9°C (48°F) to an average of 16°C (61°F), with a maximum temperature of 33°C (92°F). While August has lower precipitation at 25 mm (1.0 in) over 7 days, June sees significantly more rainfall, totaling 65 mm (2.6 in) across 11 days. Additionally, humidity levels are slightly lower in August at 73% compared to June's 84%. For a more detailed look at June weather, visit Bainbridge Island weather in June.

In comparing the weather between July and August, we see that both months experience similar minimum temperatures, averaging around 12°C (54°F). However, August tends to be warmer, with a higher maximum temperature of 34°C (93°F) compared to July's 28°C (83°F). Precipitation levels remain comparable, with August receiving 25 mm (1.0 in) over 7 days and July slightly more at 26 mm (1.0 in) over 6 days. Humidity is also slightly lower in August at 73%, while July has a higher humidity of 82%. For more detailed insights into July's weather, you can refer to Bainbridge Island weather in July.

August and September exhibit notable differences in weather conditions. In August, temperatures range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average of 19°C (67°F). The month experiences relatively low precipitation at 25 mm (1.0 in) over 7 days, while humidity hovers at 73%. In contrast, September sees cooler temperatures, with minimums of 9°C (48°F) and maximums of 28°C (83°F), yielding an average of 16°C (62°F). This month is much wetter, with 84 mm (3.3 in) of precipitation recorded over 13 days, and humidity slightly increases to 74%. For more detailed insights, check out Bainbridge Island weather in September.

In comparing the weather of August and October, it's clear that October brings a significant drop in temperatures and an increase in precipitation. While August enjoys warmer temperatures with averages around 19°C (67°F) and maximums reaching 34°C (93°F), October's temperatures range much lower, with an average of 12°C (53°F) and highs of only 22°C (73°F). Additionally, October experiences more than five times the precipitation of August, totaling 136 mm (5.4 in) over 16 rainy days compared to August's 25 mm (1.0 in) spread over just 7 days. The humidity also rises slightly in October to 83%, compared to 73% in August. For more detailed insights, check out Bainbridge Island weather in October.

August weather is characterized by warmer temperatures, with a minimum of 12°C (54°F) and an average of 19°C (67°F), peaking at a maximum of 34°C (93°F). In contrast, November brings a significant drop in temperature, with minimums around 2°C (35°F) and an average of just 9°C (48°F), reaching a maximum of 16°C (61°F). Additionally, August sees relatively low precipitation levels of 25 mm (1.0 in) over 7 days, while November is much wetter, with 168 mm (6.6 in) over 18 days and higher humidity at 86%. For more details on the weather conditions in November, visit Bainbridge Island weather in November.

August and December on Bainbridge Island present a stark contrast in weather. August enjoys mild temperatures ranging from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average of 19°C (67°F) and relatively low precipitation of 25 mm (1.0 in) over about 7 days. In contrast, December brings much colder conditions, with temperatures dipping to a minimum of -5°C (24°F) and averaging around 6°C (43°F). The maximum temperature in December reaches only 13°C (56°F) while experiencing significantly higher precipitation of 179 mm (7.1 in) spread over 18 days, coupled with elevated humidity levels of 87%. For a more detailed look at December's weather, you can check Bainbridge Island weather in December.

Compare Bainbridge Island's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Bainbridge Island

August on Bainbridge Island brings a delightful shift in weather, characterized by warmer temperatures that peak higher than in previous months, creating ideal conditions for outdoor activities. While the average temperature is pleasantly moderate, the occasional spike can reach into the low 30s °C, making it the warmest month of the year. Despite this warmth, humidity remains noticeably high at 73%, lending a slight tropical feel to the coastal air. Rainfall is also less frequent, with only about seven days of precipitation, allowing for plenty of sunny days to enjoy the island’s natural beauty. For a more comprehensive look at Bainbridge Island's climate throughout the year, visit Bainbridge Island Climate.