Last updated: February 24, 2025
Guerneville, United States, experiences a delightful August, characterized by warm temperatures and clear skies. With maximum highs reaching 35°C (96°F) and average temperatures settling around 20°C (68°F), this month offers the perfect backdrop for outdoor activities. Evenings cool down to a pleasant 10°C (50°F), providing a comfortable respite from daytime warmth. Impressively, no precipitation is recorded during this month, ensuring dry conditions throughout. The humidity hovers around 66%, adding a touch of tropical feel to the idyllic summer ambiance. Whether you’re exploring local vineyards or enjoying nature trails, August in Guerneville promises a sun-kissed experience.
In Guerneville, United States, August brings a delightful transition towards the end of summer, characterized by mild evenings and warm days. The temperatures for the month range from a comfortable 10°C (50°F) at night to a peak of 35°C (96°F) during the day, echoing the warmth experienced in July. With an average temperature of around 20°C (68°F), outdoor activities thrive in this vibrant season. As late summer unfolds, the climate remains inviting, making it an ideal time for exploration and relaxation. This trend of rising temperatures from spring into summer peaks in August, before gradually easing into the cooler fall months, giving inhabitants and visitors alike the perfect opportunity to experience the natural beauty of the region.
In Guerneville, United States, August marks a striking lull in precipitation, continuing a trend established in July, as the area recorded 0 mm (0.0 in) of rainfall for the entire month, which reflects the dry spell typical of summer. This absence of rain follows a wetter early part of the year, where January and February saw significant precipitation with 140 mm (5.5 in) and 157 mm (6.2 in) respectively. The contrast between the lush winter months and the dry summer underscores a seasonal rhythm, highlighting how Guerneville experiences a pronounced shift in weather patterns. With no recorded rainy days in August, residents and visitors can enjoy the warm, dry conditions, but they also eagerly anticipate the much-needed rains that typically return in the fall.
In August, Guerneville experiences a notable decline in humidity, dipping to 66%, marking it as the most comfortable month of the year. This decrease is part of a broader trend observed throughout the summer, where humidity levels gradually fall from 80% in May to 70% in July before reaching the August low. Following this mid-summer retreat, humidity slightly rebounds in September, rising to 68%. Overall, while winters in Guerneville are characterized by high humidity—peaking at 86% in January—the summer months offer a refreshing break, creating an inviting atmosphere for outdoor activities and exploration.
In August, Guerneville experiences a very high UV Index of 10, indicating a notable increase in sun intensity that can lead to skin damage in as little as 15 minutes of unprotected exposure. This month reflects a continuation of the intense summer UV levels seen in July, where the index peaked at 11. With a gradual decline expected as summer transitions into fall, the UV Index begins to slip from August’s high to 9 in September. Overall, the trend indicates that late summer maintains the need for heightened sun safety measures, as outdoor enthusiasts bask in the warm sun. For more detailed insights, check the Guerneville UV Index.
UV Risk Categories
August in Guerneville shines brightly with 333 hours of sunshine, marking a delightful end to the summer months. This peak summer month follows a particularly sunny July with 375 hours, showcasing a trend of increasing daylight from January's modest 141 hours to the summer's vibrant peak. As summer transitions into fall, sunshine begins to gently wane, with September still enjoying a respectable 306 hours. The gradual decline in sunlight hours continues into the cooler months, indicating that while the summer sun makes its mark, the crisp autumn days are just around the corner. Overall, August embodies the warmth and brightness of summer, inviting residents and visitors to relish the abundant sunshine before the seasonal shift sets in.
As summer reaches its peak, August in Guerneville boasts a commendable 80% chance of sunny weather, solidifying its place as one of the sunniest months of the year. The trend is a continuation of the warm and bright conditions established in May (84%) and June (78%), which create a joyful atmosphere for outdoor activities. Following July's slightly lower 79%, August maintains the positivity of summer, paving the way for delightful days spent in nature or exploring the vibrant local scene. With September ushering in cooler weather and a 72% chance of sunshine, August is undoubtedly a prime time to soak up the warmth before autumn settles in.
In Guerneville, United States, August marks a gentle transition as daylight begins to wane, offering about 13 hours of sunlight—slightly less than the 14 hours enjoyed in the peak summer months of June and July. This gradual decrease is part of a consistent trend as the year progresses, where daylight hours ebb from a robust 14 hours in late spring and summer to just 9 hours by December. As summer's warmth lingers, August provides an ideal balance of light and warmth, signaling the approaching fall while still inviting outdoor adventures under the sun. The rhythm of daylight in Guerneville paints a beautiful narrative of seasonal change, from the long, sun-drenched days of summer to the cozy, shorter days of winter.
In Guerneville, August sees a continuation of the mild breeze that characterizes the summer months, with average wind speeds holding steady at 2.4 m/s (5 mph). This mirrors the wind patterns from July, creating a calm and serene backdrop perfect for outdoor activities. As summer transitions into fall, the wind picks up slightly in May, reaching its peak at 4.1 m/s (9 mph), but then settles into a gentle rhythm heading into the late summer. Following August, the wind speeds gradually decrease into September, marking the end of the warm season. Overall, the wind in Guerneville during August offers a tranquil environment, complementing the vibrant local scenery and inviting visitors to relish the natural beauty of this charming community.
The weather in Guerneville 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 Guerneville and find detailed weather information for every month.
August and January present stark contrasts in weather conditions. In August, temperatures range from a mild 10°C (50°F) at night to a scorching maximum of 35°C (96°F) during the day, with no recorded precipitation, resulting in an average humidity of 66%. In contrast, January features cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 25°C (77°F), along with significant rainfall measuring 140 mm (5.5 in) over approximately nine days, leading to a higher humidity of 86%. For those interested in exploring the weather specifics for January, check out Guerneville weather in January.
August and February present a striking contrast in weather conditions. In August, temperatures range from a minimum of 10°C (50°F) to a maximum of 35°C (96°F), with an average of 20°C (68°F) and no recorded precipitation. The humidity sits at a comfortable 66%, making it a pleasant month for outdoor activities. In contrast, February features much cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 25°C (77°F), averaging around 10°C (51°F). This month also experiences significant rainfall, with 157 mm (6.2 in) of precipitation over approximately 8 days, and a higher humidity level of 84%. This stark difference makes February a notably wetter and colder month compared to the dry heat of August. For more details, check out Guerneville weather in February.
August and March present strikingly contrasting weather patterns. In August, temperatures range from a mild 10°C (50°F) to a scorching 35°C (96°F), with an average of 20°C (68°F) and no precipitation, leading to a dry and sunny environment with a humidity level of 66%. In contrast, March experiences cooler temperatures, from a chilly 0°C (32°F) to a comfortable 26°C (80°F), averaging at 11°C (52°F). This month is marked by significant precipitation of 96 mm (3.8 in) spread across 10 days, resulting in higher humidity levels of 83%. For more details on March weather, you can check out Guerneville weather in March.
When comparing the weather in August and April, it’s clear that August tends to be significantly warmer and drier. In August, temperatures can range from a pleasant minimum of 10°C (50°F) to a scorching maximum of 35°C (96°F), with no recorded precipitation and an average humidity of 66%. In stark contrast, April features cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 30°C (86°F), along with notable rainfall of 47 mm (1.9 in) over six days and higher humidity levels at 80%. For more detailed insights on April weather, check out Guerneville weather in April.
August typically brings warmer weather compared to May, with average temperatures around 20°C (68°F) and highs reaching up to 35°C (96°F). In contrast, May has cooler temperatures, averaging 16°C (60°F) and peaking at 33°C (91°F). While August enjoys dry conditions with no recorded precipitation, May sees an average of 30 mm (1.2 in) spread over three days, leading to significantly higher humidity levels at 80% compared to August's 66%. For more detailed information, you can check out Guerneville weather in May.
When comparing the weather in August and June, we observe some notable differences. August boasts higher maximum temperatures, reaching up to 35°C (96°F), while June can peak at 37°C (99°F). However, June experiences slightly cooler average temperatures, with a minimum of 9°C (48°F) compared to August's minimum of 10°C (50°F). In terms of precipitation, August enjoys completely dry conditions with 0 mm of rainfall, whereas June sees a modest 2 mm. Additionally, June has higher humidity at 76%, compared to August's 66%. For detailed information on June weather in Guerneville, you can check Guerneville weather in June.
In comparing the weather between July and August, we see a slight variation in temperature and humidity. Both months feature a similar temperature range, with July having a minimum of 11°C (53°F) and an average of 20°C (68°F), and August showing a minimum of 10°C (50°F) alongside the same average temperature. Notably, August records a maximum temperature of 35°C (96°F) which is marginally higher than July's maximum of 35°C (95°F). However, August experiences slightly lower humidity at 66% compared to July's 70%. Both months remain dry with no recorded precipitation. For more details on the July weather specifically, please visit Guerneville weather in July.
In comparing the weather between August and September, we see a slight drop in the average temperature, with August featuring a minimum of 10°C (50°F) and an average of 20°C (68°F) compared to September's minimum of 8°C (47°F) and average of 19°C (67°F). Interestingly, September can bring slightly higher maximum temperatures, reaching up to 40°C (103°F), compared to August’s peak of 35°C (96°F). Both months have minimal precipitation, with August recording 0 mm and September showing just 2 mm of rainfall, while humidity remains relatively consistent at 66% in August and 68% in September. For more detailed weather insights, you can visit Guerneville weather in September.
In August, the weather is typically much warmer, with temperatures ranging from a pleasant 20°C (68°F) to a scorching high of 35°C (96°F), and with no recorded precipitation. The humidity sits at a moderate 66%, making for a dry and warm atmosphere. In contrast, October sees a significant drop in average temperatures, with a minimum of 3°C (38°F) and an average of 16°C (62°F), though highs can still reach up to 35°C (94°F). This month also brings more rainfall, with 43 mm (1.7 in) of precipitation over two days, and a slight increase in humidity to 72%. For more details about October conditions, you can check Guerneville weather in October.
August and November present significantly different weather patterns. August typically boasts a warm climate with temperatures ranging from a pleasant 10°C (50°F) at night to a scorching high of 35°C (96°F), accompanied by low humidity (66%) and no recorded precipitation. In contrast, November brings cooler temperatures, with a minimum of -1°C (30°F) and an average of 12°C (54°F), peaking at a mild 27°C (81°F). This month also introduces increased humidity (84%) and a notable 61 mm (2.4 in) of precipitation over five days. For more detailed insight, check out Guerneville weather in November.
The weather in August is characterized by warm temperatures, with a minimum of 10°C (50°F) and an average of 20°C (68°F), reaching a high of 35°C (96°F). On the other hand, December brings a cooler climate, with temperatures dipping to a minimum of 0°C (32°F) and averaging 9°C (49°F), while the maximum reaches 24°C (75°F). Additionally, August is notably dry, featuring no precipitation over the month, whereas December experiences significant rainfall, averaging 102 mm (4.0 in) over 9 days, resulting in higher humidity levels at 84%. For more detailed information, you can check Guerneville weather in December.
In August, Guerneville basks in sunny splendor, marking a distinct departure from the cooler, wetter months that precede it. With an average temperature reaching a comfortable 20°C, coupled with zero precipitation days, it's a perfect time to enjoy the beauty of the outdoors without the worry of rain. The humidity level at 66% adds a touch of warmth, making the hot days feel inviting rather than oppressive. This makes August an ideal month for outdoor activities and enjoying the vibrant local scene. For more details on how Guerneville's weather shapes its unique climate throughout the year, visit Guerneville Climate.