Last updated: February 24, 2025
In May, Guerneville experiences a delightful range of temperatures, with maximums reaching 33°C (91°F) during sunny days, while the average settles at a comfortable 16°C (60°F). Nights can be crisp, dipping to a minimum of 5°C (41°F). The month sees 30 mm (1.2 in) of precipitation, typically spread over 3 days, contributing to the region's lush greenery. With humidity levels around 80%, the air is rich and vibrant, making it an ideal time for outdoor activities amidst the stunning natural landscapes.
In May, Guerneville experiences a delightful transition into warmer weather, with temperatures reflecting a marked increase. The month opens with a minimum of 5°C (41°F), gradually climbing to an invigorating average of 16°C (60°F), while maximum temperatures can soar to a sizzling 33°C (91°F). This notable leap from the cooler temperatures of April indicates the onset of summer, making it an ideal time for outdoor activities. As the days grow longer and sunnier, residents and visitors alike can bask in the warmth, drawing on the vibrant colors of nature that flourish during this month.
In May, Guerneville experiences a notable dip in precipitation, with just 30 mm (1.2 in) of rainfall, marking one of the driest months of the year. This reduction is mirrored in the number of rainy days, where only 3 days saw precipitation, significantly lower than the earlier months of the year. The trend of decreasing rainfall from April's 47 mm (1.9 in) sets the stage for the upcoming dry summer months. As the town transitions from spring to summer, the contrast between May's mild dampness and the almost entirely dry conditions that follow in June and July becomes evident, signaling a shift towards a much drier season ahead.
In May, Guerneville experiences a shift in humidity levels, maintaining a comfortable 80% that mirrors the previous month, April. This consistency marks the peak of the spring season, as moisture from winter gradually dissipates. As the community transitions into summer, humidity continues to decline, hitting 76% in June and descending further as the warm months progress. The trend reveals that while Guerneville enjoys lush greenery in spring, the humidity levels start to taper off, providing a refreshing outdoor climate conducive for exploration and relaxation. Such rhythmic changes enhance the area’s vibrant seasonal character, inviting both residents and visitors to revel in its scenic beauty.
As May rolls in, Guerneville experiences a sharp rise in the UV Index, peaking at 10—a level categorized as very high. This marks a notable increase from the previous months, especially as April's index reached 8. With the burn time shrinking to just 15 minutes, it's crucial for outdoor enthusiasts to be diligent about sun protection. The trend is clear: as spring transitions to summer, UV exposure intensifies, signaling that protective measures such as sunscreen and clothing become essential. This pattern will continue into June, when the index climbs even higher to 11, categorized as extreme. For those looking to stay informed, checking regularly for updates on local UV levels is key—visit Guerneville UV Index for the latest information.
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As spring transitions into summer, May shines brightly in Guerneville with an impressive 351 hours of sunlight—the highest of the year thus far. This month marks a delightful peak after a steady climb from January's 141 hours. The increasing daylight is a clear invitation to embrace outdoor activities, as the region enjoys the lush greenery nurtured by earlier rains. Following May, the sun continues to be generous, with June and July each surpassing the 370-hour mark. However, as the year progresses into autumn, the hours gradually dwindle, reminding us to soak in every golden moment before the cooler months arrive. This trend not only highlights Guerneville's vibrant seasonal rhythm but also enhances the allure of May as a prime time for exploration and connection with nature.
As spring blossoms into summer, May in Guerneville, California, presents an impressive 84% chance of sunny weather, making it one of the brightest months of the year. This significant increase in sunshine follows a steady upward trend, starting from 39% in January and reaching 71% in April. With temperatures warming and nature in full bloom, May stands out as an ideal time to enjoy outdoor activities. While the months leading up to it show gradual improvement, the transition into summer is marked by a delightful surge in sunny days, making Guerneville a lovely destination for those seeking the warmth of the sun.
In Guerneville, United States, daylight duration experiences a steady rise as spring unfolds, peaking in May with an inviting 14 hours of sunshine. From a modest 9 hours in January, the increase is gradual yet noticeable, reaching 11 hours by March and a vibrant 13 hours in April. This upward trend continues into late spring and early summer, maintaining the same sun-soaked 14-hour duration through June and July. As summer wanes, daylight begins to taper off, with August seeing a slight decline to 13 hours, followed by a gradual decrease in the subsequent months. Overall, Guerneville's daylight patterns reflect the delightful rhythm of the seasons, offering longer days that invite outdoor adventures and relaxation amidst nature’s beauty.
As May arrives in Guerneville, the landscape is animated by a noticeable increase in wind speed, averaging 4.1 m/s (9 mph)—the highest for the year. This uptick stands in contrast to the preceding months, where wind speeds hovered between 2.4 m/s and 3.4 m/s. The gentle breezes of early spring give way to a more invigorating atmosphere, inviting outdoor activities and a sense of energy throughout the community. June sees a slight dip back to 3.4 m/s (8 mph), but May's winds mark a delightful transition into the warmer season, enhancing both the beauty and liveliness of Guerneville's natural scenery. With May's breezy character, it's a perfect time for locals and visitors alike to explore the area, bask in the fresh air, and embrace the unfolding summer.
The weather in Guerneville changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
May and January present starkly different weather patterns. In May, temperatures range from a mild 5°C (41°F) at night to a warm average of 16°C (60°F) and can peak at 33°C (91°F) during the day. The month sees relatively low precipitation at 30 mm (1.2 in) over just 3 days, with humidity averaging around 80%. In contrast, January's temperatures drop significantly, with minimums reaching -1°C (30°F), an average of 10°C (50°F), and maximums peaking at 25°C (77°F). This month experiences much higher rainfall, totaling 140 mm (5.5 in) across 9 days and maintains a slightly higher humidity level of 86%. The contrasting climates highlight the transition from the freshness of spring to the coolness of winter. For more detailed information, check out Guerneville weather in January.
The weather in May contrasts sharply with that of February, showcasing the transition from winter to spring. In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 33°C (91°F), with an average of 16°C (60°F) and relatively low precipitation at 30 mm (1.2 in) over just three days, while humidity sits at 80%. On the other hand, February experiences much cooler temperatures, with a minimum of -3°C (27°F) and an average of 10°C (51°F), peaking at 25°C (77°F). This month is also significantly wetter, with 157 mm (6.2 in) of rainfall spread across eight days, accompanied by slightly higher humidity at 84%. For more details, you can check Guerneville weather in February.
When comparing the weather in May and March, it’s clear that May tends to be warmer and drier. In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 33°C (91°F), with an average of 16°C (60°F) and only 30 mm (1.2 in) of precipitation over about three days. In contrast, March experiences a wider temperature range from 0°C (32°F) to 26°C (80°F), with an average of 11°C (52°F) and significantly higher precipitation of 96 mm (3.8 in) spread over ten days. Additionally, humidity levels in both months are quite similar, with March slightly higher at 83% compared to May's 80%. For more detailed insights, you can refer to Guerneville weather in March.
In comparing the weather between April and May, May generally features warmer temperatures, with an average of 16°C (60°F) compared to April's average of 13°C (57°F). The minimum temperature in May is slightly higher at 5°C (41°F), while April has a lower minimum of 3°C (37°F). However, April experiences more rain, with precipitation totals of 47 mm (1.9 in) over 6 days, compared to May's 30 mm (1.2 in) over just 3 days. Despite both months sharing a humidity level of 80%, May tends to feel drier due to less frequent rainfall. For more details on April weather in Guerneville, you can check Guerneville weather in April.
May and June showcase a noticeable transition in weather patterns. In May, temperatures range from a chilly 5°C (41°F) at their lowest to a warm 33°C (91°F) at their peak, with an average of around 16°C (60°F) and an 80% humidity level. The month sees about 30 mm (1.2 in) of precipitation over three days. In contrast, June experiences milder temperatures, with a minimum of 9°C (48°F), an average of 19°C (67°F), and a maximum reaching up to 37°C (99°F). Additionally, June is notably drier, with only 2 mm (0.1 in) of rainfall and no rainy days, accompanied by a slightly lower humidity of 76%. For a detailed look at the weather in June, you can check out Guerneville weather in June.
May and July present quite distinct weather patterns. In May, temperatures range from a cool 5°C (41°F) at night to a warm 33°C (91°F) during the day, with an average temperature of 16°C (60°F). This month also sees a moderate level of precipitation, averaging 30 mm (1.2 in) over three days, and humidity is relatively high at 80%. In contrast, July boasts warmer temperatures with a minimum of 11°C (53°F), an average of 20°C (68°F), and a maximum of 35°C (95°F). Remarkably, July experiences no precipitation at all, resulting in dry conditions and a lower humidity level of 70%. For a more detailed look at July weather, check out Guerneville weather in July.
In May, the weather varies significantly with temperatures ranging from a cool 5°C (41°F) to a warm 33°C (91°F), averaging around 16°C (60°F). This month also experiences some precipitation, averaging 30 mm (1.2 in) over about three days, alongside a high humidity level of 80%. In contrast, August presents a much more stable and warmer climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 35°C (96°F), averaging around 20°C (68°F). Notably, August sees no rainfall, resulting in a dry month with humidity dropping to 66%. For more detailed information, you can refer to Guerneville weather in August.
May and September showcase distinct weather patterns, providing a brief transition between spring and autumn. May experiences a wider temperature range, with minimums around 5°C (41°F) and maximums reaching 33°C (91°F), alongside relatively higher humidity at 80%. In contrast, September boasts milder minimum temperatures of 8°C (47°F) and can reach impressive highs of 40°C (103°F), but with significantly lower humidity at 68% and minimal precipitation, averaging just 2 mm over the month. For more detailed weather insights, you can explore Guerneville weather in September.
In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 33°C (91°F), with an average temperature of 16°C (60°F). The month experiences about 30 mm (1.2 in) of precipitation over approximately 3 days and maintains high humidity levels at 80%. In contrast, October offers slightly cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 35°C (94°F), while the average remains similar at 16°C (62°F). October sees a bit more rain, totaling 43 mm (1.7 in) over 2 days, but the humidity decreases to 72%. For more details, check out the Guerneville weather in October.
In May, temperatures in Guerneville range from a chilly 5°C (41°F) to a warm high of 33°C (91°F), with an average of 16°C (60°F). This month typically sees about 30 mm (1.2 in) of precipitation over three days, combined with a relatively high humidity of 80%. In contrast, November experiences much cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 27°C (81°F), averaging at 12°C (54°F). Precipitation increases in November to 61 mm (2.4 in), occurring over five days, and humidity also rises slightly to 84%. For a closer look at the weather specifics, check out Guerneville weather in November.
May and December present contrasting weather patterns. In May, temperatures range from a cool minimum of 5°C (41°F) to a warm maximum of 33°C (91°F), with an average of 16°C (60°F). The month sees relatively low precipitation, totaling 30 mm (1.2 in) over just 3 days, and humidity levels hover around 80%. In stark contrast, December experiences cooler temperatures with a minimum of 0°C (32°F) and an average temperature of 9°C (49°F), reaching a maximum of 24°C (75°F). This month is significantly wetter, receiving 102 mm (4.0 in) of rain on 9 days, along with a slight increase in humidity to 84%. For a more detailed look at December conditions, you can check Guerneville weather in December.
As May arrives in Guerneville, the weather begins to shift dramatically from the cooler months, offering a delightful balance of warmth and mildness. With maximum temperatures reaching an inviting 33°C (91°F) and an average around a pleasant 16°C (60°F), this month marks the transition into summer, inviting outdoor adventures and leisurely afternoons. Unlike the preceding months, which often feature chillier temperatures and more precipitation, May showcases a significant reduction in rainy days, averaging only three and accumulating about 30 mm (1.2 in) of rainfall. The humidity at 80% provides a refreshing touch, making it ideal for enjoying the lush landscape. For a deeper understanding of the unique weather patterns throughout the year, visit Guerneville Climate.