May Weather in Mendocino, United States

Last updated: February 24, 2025

May in Mendocino, United States, unveils a delightful mix of mild temperatures and refreshing coastal breezes. With a maximum of 26°C (79°F) and an average hovering around 14°C (57°F), it offers an inviting climate for outdoor activities. Visitors can expect cooler nights, dipping to a minimum of 6°C (42°F), perfect for cozy evenings. Although precipitation graces the area with 43 mm (1.7 in) over the month, occurring on approximately 4 days, the overall humidity remains relatively high at 80%, adding to the lushness of Mendocino's stunning landscapes. This gentle transition into summer captures the essence of Mendocino's picturesque beauty, making it a prime time for exploration.

May Temperature in Mendocino

In Mendocino, United States, May marks a delightful transition into warmer weather, making it one of the more pleasant months of the year. With minimum temperatures hovering around 6°C (42°F) and daytime highs reaching up to 26°C (79°F), the average temperature settles at a comfortable 14°C (57°F). This notable increase from April's cooler averages hints at the approaching summer, creating an inviting atmosphere for outdoor activities and exploration. As the coastal town shakes off the last chills of spring, May showcases a notable warmth compared to the previous months, encouraging visitors to immerse themselves in its stunning landscapes and vibrant local culture.

May Weather in Mendocino: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Mendocino, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec505051545661636464595350
Data source: Temperature data for Mendocino 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.

May Precipitation in Mendocino

May in Mendocino marks a distinct shift towards drier conditions, with precipitation dropping to a modest 43 mm (1.7 in), a significant decrease from the wetter months earlier in the year. This reduction is complemented by just four days of rain, signaling the approach of summer. As spring transitions into summer, the trend of diminishing rainfall continues, foreshadowing the nearly rainless months of June and July. The contrast between May's rainfall and the heavier showers of January through April highlights the region’s seasonal variations, as Mendocino moves from lush greenery to a more arid landscape in the summer months.

May Precipitation Trends in Mendocino

The chart displays monthly precipitation patterns in Mendocino, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec14813710860432216437297
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mendocino

In May, the humidity in Mendocino remains consistent at 80%, mirroring the levels from April. This steadiness marks a gradual transition from the higher humidity peaks of the winter months, where levels hovered around 86% in January and dipped to 84% in February. As spring unfolds, humidity continues its gentle decline, paving the way for the drier summer months ahead. By June, a noticeable drop to 76% sets the stage for the season of warmth and less moisture, illustrating Mendocino's shift toward a more comfortable coastal climate. The trend hints at a balanced atmosphere, where the lush greenery nurtured by the higher humidity gives way to the inviting warmth of summer.

May Average Humidity in Mendocino

This chart illustrates the average monthly humidity levels in Mendocino, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%80%80%76%70%66%68%72%84%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mendocino

As May arrives in Mendocino, the sun makes its strongest impression, bringing with it an extreme UV Index of 11. This surge marks a significant leap from the preceding months, where the UV levels gradually escalated from a moderate 3 in January to a very high 8 in April. With a burn time of just 10 minutes, it's crucial for residents and visitors to take protective measures against the sun's fierce rays. This trend of intensifying UV exposure continues into June and July, maintaining this extreme level. For a detailed look at UV patterns throughout the year, check out the complete data at Mendocino UV Index.

Maximum UV Index Levels in Mendocino for May

The chart shows the monthly maximum UV Index (UVI) for Mendocino in May, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3578111111108643
Data source: Mendocino May 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.

May Sunshine in Mendocino

As May arrives in Mendocino, it heralds the peak of sunshine with an impressive 348 hours of brilliant daylight, a notable leap from the previous month's 290 hours. This upward trend continues each month, showcasing a steady increase that starts in January with a mere 133 hours and builds through spring, culminating in June's glorious 376 hours. It's a delightful period where nature begins to flourish, and outdoor activities abound, as the days grow longer and brighter. The warmth of summer soon follows, peaking in July with 386 hours, but May stands out as a pivotal transition, inviting both locals and visitors to bask in the invigorating sun and vibrant scenery.

Monthly Sunshine Duration in Mendocino: May Highlighted

The May sunshine duration represents the total number of hours Mendocino experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec133h205h261h290h348h376h386h344h302h275h208h175h
Data source: Mendocino May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mendocino During May

As spring unfolds in Mendocino, the likelihood of sunny weather experiences a notable upswing, with May boasting an impressive 70% chance of sunshine. This marks a significant increase from the preceding months, showcasing a steady progression from 35% in January to 60% in April. The rising trend indicates that after a few months of inconsistent sun, residents and visitors alike can look forward to more brilliant days ahead. While June offers a slight dip to 56%, the overall trajectory reveals that May serves as a promising peak of sunlight before the summer season settles in. Embrace the warmth and enjoy the outdoors, as May shines brighter than the earlier months!

Percentage of Sunny Days in May in Mendocino

The chart illustrates the percentage of sunny days in Mendocino throughout the year, with May 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 Mendocino experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec35%52%58%60%70%56%52%63%57%46%40%32%
Data source: Mendocino May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mendocino in May

In Mendocino, United States, the progression of daylight duration throughout the year showcases a captivating seasonal rhythm. As winter recedes, January offers a mere 9 hours of daylight, gradually increasing to 10 hours in February and then reaching a blossoming 11 hours by March. The arrival of spring brings a notable surge, with April delighting residents with 13 hours of sunshine, paving the way for May, when daylight peaks at 14 hours. This splendid length of day persists into June and July, providing ample opportunity for outdoor adventures. As summer wanes, the light begins to retract, dipping back to 13 hours in August, and further to 12 hours in September. As the year draws to a close, October and November return to shorter days, with daylight dwindling again to 9 hours by December. This cyclical pattern not only highlights the beauty of Mendocino’s changing seasons but also invites residents and visitors alike to engage with nature’s rhythm.

Average Daylight Hours in Mendocino for May

The chart illustrates the variation in daylight duration in Mendocino throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 44m10h 43m11h 58m13h 15m14h 20m14h 52m14h 34m13h 37m12h 23m11h 6m9h 59m9h 26m
Data source: Mendocino daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Mendocino

In Mendocino, May ushers in a notable increase in wind speed, peaking at an average of 5.0 m/s (11 mph), a refreshing change from the gentler breezes of the preceding months. This month stands out as the windiest of the year, setting the stage for outdoor enthusiasts and those seeking coastal adventures. Following a trend of gradually decreasing wind speeds from January through April, May offers a brief respite from the calm, revitalizing the coastal landscape before the winds mellow again into summer. As the year progresses, the wind speeds drift downward, culminating in September's soft breezes of 2.7 m/s (6 mph). This seasonal shift not only enhances Mendocino's charm but also highlights the dynamic nature of its coastal climate.

Average May Wind Speed in Mendocino

The chart displays monthly wind speed patterns in Mendocino, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.93.73.55.0 m/s3.73.33.12.73.52.53.2
Data source: Mendocino May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Mendocino Compares to Other Months

The weather in Mendocino 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 Mendocino and find detailed weather information for every month.

When comparing the weather in May and January, a noticeable contrast emerges. May enjoys milder temperatures, with a minimum of 6°C (42°F) and a comfortable average of 14°C (57°F), peaking at a pleasant 26°C (79°F). In contrast, January starts cooler with a minimum of 1°C (34°F) and a lower average of 10°C (50°F), although it can reach a maximum of 21°C (69°F). Additionally, May experiences less precipitation, totaling 43 mm (1.7 in) over just 4 rainy days, while January is significantly wetter, with 147 mm (5.8 in) of rainfall spread across 11 days. Humidity levels are also higher in January at 86%, compared to May's 80%. For a more detailed look at January's climate, you can visit Mendocino weather in January.

Comparing the weather in May and February reveals notable differences. May typically presents a more moderate climate with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 26°C (79°F) and an average of 14°C (57°F). In contrast, February experiences cooler averages, with temperatures ranging from 0°C (32°F) to 24°C (76°F), and an average temperature of 10°C (50°F). While May has relatively low precipitation at 43 mm (1.7 in) over just 4 days, February sees significantly more rainfall with 137 mm (5.4 in) across 11 days. Humidity levels are also higher in February at 84%, compared to 80% in May. For more insights on February weather in Mendocino, check out Mendocino weather in February.

When comparing the weather between March and May, it's evident that May enjoys significantly warmer temperatures, with an average of 14°C (57°F) compared to March's cooler average of 10°C (51°F). The maximum temperature in May reaches up to 26°C (79°F), while March only peaks at 23°C (74°F). Precipitation also varies considerably; May experiences a much lighter rainfall of 43 mm (1.7 in) over just 4 days, in contrast to March’s heavier rainfall of 108 mm (4.2 in) spread across 13 days. Additionally, humidity levels remain relatively similar, with May at 80% and March slightly higher at 83%. For more detailed insights into March weather, you can check this link: Mendocino weather in March.

In comparing the weather of May to that of April, May generally offers slightly warmer temperatures, with a minimum of 6°C (42°F) and an average of 14°C (57°F), compared to April's minimum of 4°C (39°F) and average of 12°C (54°F). Additionally, May experiences fewer precipitation days, with rainfall occurring on only 4 days and totaling 43 mm (1.7 in), whereas April sees rain on 7 days with a higher total of 60 mm (2.4 in). Despite similar humidity levels of 80% for both months, May's warmer conditions and reduced precipitation create a more pleasant outdoor experience. For a more detailed look at April's weather, you can visit Mendocino weather in April.

May typically features a cooler climate with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 26°C (79°F), averaging around 14°C (57°F). The month experiences moderate precipitation of 43 mm (1.7 in) over four days, coupled with a high humidity level of 80%. In contrast, June warms up significantly, with temperatures ranging from a minimum of 9°C (48°F) to a peak of 31°C (88°F), averaging 16°C (62°F). Notably, June sees much less rainfall, with only 2 mm (0.1 in) of precipitation and no rainy days, along with slightly lower humidity at 76%. This transition marks a distinct shift towards warmer and drier conditions as summer approaches. For more details, you can check Mendocino weather in June.

In comparing the weather between May and July, we observe a distinct shift in temperatures and precipitation. May experiences a wider range of temperatures, with a minimum of 6°C (42°F) and a maximum of 26°C (79°F), leading to an average temperature of 14°C (57°F). This month also sees significant rainfall, with 43 mm (1.7 in) spread over 4 days, resulting in high humidity levels around 80%. In contrast, July is much warmer and drier, with minimum temperatures rising to 11°C (52°F) and maximums reaching 29°C (84°F), averaging 17°C (63°F). The month boasts only 2 mm (0.1 in) of precipitation over 0 days, and the humidity decreases to 70%. For more details on the weather in July, you can refer to Mendocino weather in July.

In May, the weather is characterized by cooler temperatures, with a minimum of 6°C (42°F) and an average of 14°C (57°F), peaking at 26°C (79°F). With 43 mm of precipitation over four days and a high humidity level of 80%, May often feels damp. In contrast, August brings warmer and drier conditions, featuring a minimum temperature of 11°C (51°F), an average of 18°C (64°F), and a maximum of 31°C (88°F). With just 1 mm of precipitation and no rainy days, humidity also decreases to 66%, promoting a more comfortable and pleasant environment. For more detailed insights, you can check out Mendocino weather in August.

When comparing the weather in May and September, you'll notice a significant transition in temperatures and conditions. May features cooler temperatures, with a minimum of 6°C (42°F) and an average of 14°C (57°F), reaching a maximum of 26°C (79°F). The month also brings more precipitation, totaling 43 mm (1.7 in) over about 4 days, along with higher humidity at 80%. In contrast, September offers warmer temperatures, with a minimum of 8°C (47°F) and an average of 18°C (64°F), soaring up to a maximum of 36°C (96°F). The rainfall significantly decreases to just 6 mm (0.2 in) over only 1 day, and the humidity drops to 68%. For more specifics about the September climate, you can check Mendocino weather in September.

In May, temperatures typically range from a minimum of 6°C (42°F) to a maximum of 26°C (79°F), with an average of 14°C (57°F). The month experiences around 43 mm (1.7 in) of precipitation over four days, coupled with a relatively high humidity of 80%. In contrast, October shows a slight increase in average temperature to 15°C (60°F), with maximum temperatures reaching up to 32°C (90°F). Although it also records the same precipitation of 43 mm (1.7 in), it's spread over fewer days—just three—resulting in lower humidity levels at 72%. For more details on October weather trends, you can visit Mendocino weather in October.

May and November present distinct weather patterns, highlighting the transition from spring to late autumn. In May, temperatures range from a mild 6°C (42°F) to a pleasant 26°C (79°F), with an average of 14°C (57°F). The month sees about 43 mm (1.7 in) of precipitation over approximately 4 days, and humidity levels sit around 80%. In contrast, November experiences cooler temperatures, with a minimum of 1°C (35°F) and a maximum of 22°C (72°F), averaging 12°C (53°F). The month is also wetter, with precipitation reaching 72 mm (2.8 in) across about 6 days, alongside a slightly higher humidity of 84%. For a more detailed look at the weather in November, visit Mendocino weather in November.

May and December present contrasting weather patterns. In May, temperatures range from a pleasant minimum of 6°C (42°F) to a warm maximum of 26°C (79°F), with an average of 14°C (57°F). The month experiences relatively low precipitation, at just 43 mm (1.7 in) over about four days, and humidity sits at 80%. In contrast, December is cooler, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 20°C (68°F), averaging only 10°C (50°F). This month is significantly wetter, receiving 97 mm (3.8 in) over approximately eleven days and higher humidity at 84%. For a deeper dive into the December weather specifics, check out Mendocino weather in December.

Compare Mendocino's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Mendocino

As spring unfolds in Mendocino, May brings a delightful transition characterized by mild temperatures and a touch of humidity. Unlike the cooler months of winter, May's pleasant highs invite outdoor exploration amidst the blooming landscapes. Though occasional sprinkles occur, with only a few rainy days throughout the month, the overall ambiance shifts towards sunnier skies. This balanced weather makes May a unique time to experience the region's lush beauty, often contrasting the drier and warmer conditions of the approaching summer. For more insights on how May fits into the broader climate patterns, visit Mendocino Climate.