May Weather in San Clemente, United States

Last updated: February 24, 2025

May in San Clemente, United States, brings a delightful blend of warm and mild weather, making it an ideal time to enjoy the outdoors. With maximum temperatures reaching 31°C (87°F) and an average of 17°C (63°F), residents and visitors can bask in pleasant conditions. The minimum temperature dips to around 9°C (49°F), ensuring cooler nights perfect for cozy evenings. While the month experiences a modest precipitation of 18 mm (0.7 in) over 3 days, the 70% humidity adds a refreshing ambiance to the coastal atmosphere. Overall, May offers a beautiful tapestry of weather perfect for exploring the scenic charm of San Clemente.

May Temperature in San Clemente

In San Clemente, May marks a delightful transitional month, characterized by moderate temperatures that hint at the warmth of summer ahead. With minimums rising to 9°C (49°F) and pleasant average temperatures settling around 17°C (63°F), residents and visitors can enjoy an inviting climate. The day's warmth peaks at a comfortable 31°C (87°F), offering plenty of opportunities for outdoor activities. As the month progresses, the temperatures continue to climb from the cooler days of spring, making May an ideal time for beach outings and enjoying the vibrant local scene. This gradual warming trend sets the stage for the hotter months to follow, showcasing San Clemente's charm as a coastal haven.

May Weather in San Clemente: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Clemente, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec565557616368737473696256
Data source: Temperature data for San Clemente 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 San Clemente

In May, San Clemente experiences a noticeable decline in precipitation, receiving only 18 mm (0.7 in) of rain over just 3 days. This marks a stark contrast to the wetter winter months, where rainfall was more abundant, particularly in January and February with totals of 71 mm and 66 mm, respectively. As spring gives way to summer, the reduced precipitation in May signals the approaching dry season, with June often seeing even less moisture. This trend highlights the region's characteristic shift towards drier weather as the year progresses, making May a transitional month where the dryness begins to take hold. Overall, the data emphasizes San Clemente's Mediterranean climate, marked by significant seasonal variations in rainfall.

May Precipitation Trends in San Clemente

The chart displays monthly precipitation patterns in San Clemente, 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.
JanFebMarAprMayJunJulAugSepOctNovDec71666931182333112674
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Clemente

In May, the humidity in San Clemente remains comfortable at 70%, maintaining the same level as the previous month, April. This consistency hints at a trend of moderate humidity as the region transitions into warmer summer months. While January and February experienced higher humidity levels, the drop to 70% in both April and May suggests a shift towards drier conditions as the year progresses. The following months see a slight uptick, with June and July rising to 72% and 73%, respectively. Overall, May stands as a pleasant balance within the year’s humidity spectrum, offering a refreshing atmosphere that complements the approaching summer.

May Average Humidity in San Clemente

This chart illustrates the average monthly humidity levels in San Clemente, 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.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Clemente

In May, San Clemente experiences a peak UV Index of 11, categorized as extreme, signaling an urgent call for sun protection. This is a significant rise from previous months, where the UV indices climbed steadily from moderate in January to very high by April. With a burn time of just 10 minutes, it’s crucial for locals and visitors alike to stay vigilant against overexposure. As the sun intensifies before summer, May is a pivotal month to adopt sun safety practices, reinforcing the trend of increasing UV levels leading into the summer months. For detailed information on UV exposure throughout the year, visit San Clemente UV Index.

Maximum UV Index Levels in San Clemente for May

The chart shows the monthly maximum UV Index (UVI) for San Clemente 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: San Clemente 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 San Clemente

As May unfolds in San Clemente, the warmth of the sun becomes increasingly apparent, shining for an impressive 353 hours throughout the month. This marks a delightful upward trend from the earlier months, with each successive spring month bringing more light and warmth—April basked in 319 hours, while March enjoyed 290 hours. As the days grow longer, May sets the stage for a dazzling summer, paving the way for June’s peak of 370 hours. This gradual increase not only enhances outdoor activities but also invites residents and visitors to fully embrace the coastal charm that San Clemente is known for. The transition toward summer brings a palpable sense of joy, as nature reveals its vibrant colors under the brilliant sun.

Monthly Sunshine Duration in San Clemente: May Highlighted

The May sunshine duration represents the total number of hours San Clemente 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.
JanFebMarAprMayJunJulAugSepOctNovDec188h237h290h319h353h370h379h361h317h294h255h223h
Data source: San Clemente May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Clemente During May

As May approaches in San Clemente, the likelihood of sunny weather dips slightly to 51%, reflecting a subtle shift from the balmy spring months of January through April. Notably, after peaking at 70% in August and 71% in September, the region enjoys a promising summer ahead. The trend indicates that, despite May's cloudier disposition compared to its predecessors, the sunshine returns robustly in the following months. This oscillation illustrates San Clemente's typical coastal climate, where sunshine often prevails, especially in the latter part of the year.

Percentage of Sunny Days in May in San Clemente

The chart illustrates the percentage of sunny days in San Clemente 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 San Clemente experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%61%62%53%51%61%61%70%71%64%69%46%
Data source: San Clemente May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Clemente in May

As May arrives in San Clemente, residents and visitors alike can bask in 13 hours of daylight, mirroring the extended daylight experienced in April. This month marks the transition from the shorter days of winter, where daylight hovered around 10 hours in January and February, to the longer, sun-soaked days of summer. June and July promise even more sunlight, peaking at 14 hours, perfect for outdoor activities and beach trips. As daylight begins to taper off in August, the gradual shift back to shorter days can be felt, yet May stands out as a vibrant midpoint, celebrating the lushness of spring before the summer heat sets in.

Average Daylight Hours in San Clemente for May

The chart illustrates the variation in daylight duration in San Clemente throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 11m10h 59m11h 59m13h 2m13h 54m14h 20m14h 5m13h 19m12h 19m11h 17m10h 23m9h 56m
Data source: San Clemente daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in San Clemente

In San Clemente, May ushers in a refreshing consistency in wind patterns, maintaining an average speed of 2.2 m/s (5 mph)—a trend that has continued since April. This steady breeze is a delightful precursor to the warmer summer months, which see a slight dip in wind strength as July and August each record a gentle 1.7 m/s (4 mph). Throughout the year, wind speeds are generally mild, with winter months peaking at 2.1 m/s and gradually declining towards the end of the year. Overall, May stands out as a reliable transitional month, offering just enough wind to enhance the coastal experience without overwhelming the soothing ambiance typical of this vibrant seaside community.

Average May Wind Speed in San Clemente

The chart displays monthly wind speed patterns in San Clemente, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.11.82.22.22.2 m/s1.91.71.71.71.91.62.1
Data source: San Clemente May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in San Clemente Compares to Other Months

The weather in San Clemente 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 San Clemente and find detailed weather information for every month.

May and January exhibit contrasting weather patterns, with May typically enjoying warmer temperatures and less precipitation. In May, temperatures range from a minimum of 9°C (49°F) to a maximum of 31°C (87°F), averaging around 17°C (63°F) with only 18 mm (0.7 in) of rainfall over about 3 days and a humidity level of 70%. In contrast, January has a cooler temperature range, from a low of 4°C (39°F) to a high of 30°C (87°F), with an average of 13°C (56°F). However, January sees significantly more rain at 71 mm (2.8 in) over approximately 5 days, with slightly higher humidity at 74%. For a detailed look at January weather patterns, you can visit San Clemente weather in January.

When comparing the weather in February and May, there are notable differences in temperature and precipitation. February tends to be cooler, with minimum temperatures around 3°C (38°F) and average highs reaching 29°C (85°F), while May experiences a milder climate with a minimum of 9°C (49°F) and average highs peaking at 31°C (87°F). Additionally, February sees significantly higher precipitation, totaling 66 mm (2.6 in) over 6 days compared to May's 18 mm (0.7 in) over just 3 days. Humidity levels are also slightly higher in February at 79%, compared to 70% in May. For more detailed insights, visit San Clemente weather in February.

In comparing the weather of May and March, May generally offers warmer temperatures with a minimum of 9°C (49°F) and an average high of 31°C (87°F), whereas March starts cooler, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 28°C (82°F). Precipitation is significantly lower in May, with just 18 mm (0.7 in) over 3 days, compared to March's 68 mm (2.7 in) across 10 days, making March a wetter month. Additionally, humidity is slightly higher in March at 75% than in May, which sits at 70%. For more details, you can check out San Clemente weather in March.

In comparing the weather of May and April, we find that both months experience similar humidity levels at 70%, but May tends to be slightly warmer, with average temperatures of 17°C (63°F) compared to April's 16°C (62°F). April sees higher maximum temperatures, reaching up to 34°C (94°F), while May peaks at 31°C (87°F). Additionally, May has less precipitation, accumulating only 18 mm (0.7 in) over three days, compared to April's 30 mm (1.2 in) during the same number of days. For a closer look at April's weather specifics, you can check San Clemente weather in April.

May and June showcase a noticeable transition in weather patterns. May experiences a broader temperature range, with minimums dipping to 9°C (49°F) and maximums soaring to 31°C (87°F), while June offers a milder range, starting at 12°C (54°F) and peaking at 33°C (92°F). Precipitation decreases significantly from May's 18 mm (0.7 in) over three days to a mere 2 mm (0.1 in) with no rain in June. Additionally, humidity remains relatively stable, slightly increasing from 70% in May to 72% in June. This shift indicates that June in San Clemente tends to be warmer and drier, perfect for outdoor activities. For more details, check out San Clemente weather in June.

May and July present contrasting weather patterns marked by significant variations in temperature and precipitation. In May, temperatures range from a cool 9°C (49°F) at night to a warm 31°C (87°F) in the afternoon, accompanied by 18 mm of rain over three days, leading to a moderate humidity level of 70%. In contrast, July boasts a milder minimum temperature of 15°C (60°F) and an average high of 41°C (106°F), while enjoying very little precipitation at just 3 mm over the month, resulting in a slightly higher humidity of 73%. For more details on July weather in San Clemente, visit San Clemente weather in July.

In May, temperatures range from a chilly 9°C (49°F) at night to a warm 31°C (87°F) during the day, with an average of 17°C (63°F). The month sees some rainfall, averaging 18 mm (0.7 in) over about three days, and the humidity hovers around 70%. In contrast, August offers a more consistent warmth, with minimum temperatures around 16°C (62°F), an average of 24°C (75°F), and maximum highs reaching 35°C (95°F). Rain is virtually non-existent in August, with only 3 mm (0.1 in) expected over the month, and humidity remains slightly lower at 69%. For a more detailed look at summer conditions, check out San Clemente weather in August.

May and September exhibit notable differences in weather patterns. In May, temperatures range from a cool 9°C (49°F) to a warm 31°C (87°F), with an average of 17°C (63°F) and 18 mm of precipitation over just 3 days, resulting in relatively high humidity at 70%. In contrast, September sees higher temperatures, with a minimum of 13°C (56°F) and a maximum of 40°C (105°F), averaging 23°C (73°F). Precipitation drops significantly to only 3 mm over 1 day, with a slightly lower humidity of 68%. For more detailed insights, check out San Clemente weather in September.

In May, the weather features a comfortable range of temperatures, with a minimum of 9°C (49°F), an average of 17°C (63°F), and occasional highs reaching up to 31°C (87°F). During this month, rainfall is more frequent, with 18 mm (0.7 in) of precipitation over about three days and humidity levels around 70%.

In contrast, October offers slightly warmer conditions, with temperatures ranging from a minimum of 9°C (49°F) to an average of 20°C (69°F), and maximum highs that can soar up to 38°C (101°F). Precipitation decreases to 11 mm (0.4 in) over just two days, and humidity remains relatively low at 67%. For more insights on October weather, you can explore San Clemente weather in October.

May and November both feature an average temperature of 17°C (63°F), but they differ in extremes. May sees a minimum temperature of 9°C (49°F) and a maximum of 31°C (87°F), while November has slightly cooler minimums at 7°C (45°F) and warmer maximums reaching 33°C (91°F). Precipitation in May is lower at 18 mm (0.7 in) over 3 days compared to November's 26 mm (1.0 in) over just 2 days. Humidity levels are fairly similar, with May at 70% and November at 68%. For more detailed insights, check out the San Clemente weather in November.

In May, temperatures in San Clemente typically range from a minimum of 9°C (49°F) to a maximum of 31°C (87°F), with an average of 17°C (63°F). The month experiences relatively low precipitation of 18 mm (0.7 in) over about 3 days, while humidity sits at around 70%. In contrast, December sees cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 27°C (81°F), averaging 13°C (56°F). This month is wetter, receiving 73 mm (2.9 in) of rainfall across 5 days, and humidity remains similar at 71%. For more details, you can visit San Clemente weather in December.

Compare San Clemente's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in San Clemente

As spring gives way to summer, May in San Clemente showcases a delightful mix of warm temperatures and comfortable humidity levels. With daily highs reaching a pleasant 31°C (87°F), this month stands out from the cooler days of April, making it an ideal time for outdoor activities. While precipitation is minimal, with just a few rainy days, the overall ambiance is brightened by vibrant coastal life. This combination of warmth and manageable humidity offers a beautiful transition into the summer months, inviting residents and visitors alike to enjoy the best of Southern California’s coastline. For more detailed insights, explore the year-round patterns with San Clemente Climate.