May Weather in Morro Bay, United States

Last updated: February 24, 2025

In Morro Bay, United States, May welcomes a mild climate, with average temperatures hovering around 15°C (59°F), peaking at a comfortable 25°C (77°F) during the day. As the season unfolds, the evenings can be refreshing, dipping down to a low of 8°C (47°F). Visitors can expect limited rainfall, with only 12 mm (0.5 in) of precipitation over two days, making for mostly dry and enjoyable weather. The air remains distinctly humid at 75%, inviting locals and tourists alike to savor the fresh coastal breezes while exploring the stunning natural beauty of the area.

May Temperature in Morro Bay

In Morro Bay, May marks a transition to warmer weather, with temperatures steadily rising as spring gives way to summer. The month typically sees a minimum temperature of 8°C (47°F), providing a mild start to days that average around 15°C (59°F). Maximum temperatures reach 25°C (77°F), offering pleasant afternoons perfect for outdoor activities. This trend reflects a gradual warming from the cooler months of January through April, where temperatures are notably lower. As May progresses, visitors can expect a more temperate climate, setting the stage for the even warmer temperatures of June and July, while still enjoying the fresh coastal breeze that Morro Bay is known for.

May Weather in Morro Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Morro Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec545455575862646565635954
Data source: Temperature data for Morro Bay 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 Morro Bay

In Morro Bay, May marks a significant drop in precipitation, with just 12 mm (0.5 in) recorded over only 2 days. This contrasts sharply with the earlier months, particularly January and February, which both experienced more than 80 mm of rain. As spring transitions to summer, the trend indicates a continuing reduction in rainfall, foreshadowing the dry months ahead. The trend is quite pronounced, as April had already shown a steep decline to 23 mm, and June further ushers in a dramatic shift with practically no rain at all. This seasonal pattern highlights Morro Bay's characteristic dry spells as summer approaches, making the earlier spring rains all the more precious.

May Precipitation Trends in Morro Bay

The chart displays monthly precipitation patterns in Morro Bay, 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.
JanFebMarAprMayJunJulAugSepOctNovDec110808423121111113276
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Morro Bay

In Morro Bay, United States, May ushers in a subtle decline in humidity, averaging 75%, which is slightly lower than the preceding months. This trend marks a continuation of decreasing humidity that begins in April, when levels drop to 76%. As spring transitions to summer, May offers a refreshing balance, reflecting a gradual evaporation of moisture after the wetter winter months. Interestingly, June follows suit with an even lower average of 74%, setting the stage for a drier summer. Overall, May symbolizes a shift toward more comfortable, pleasant conditions, inviting residents and visitors alike to enjoy the coastal charm of Morro Bay.

May Average Humidity in Morro Bay

This chart illustrates the average monthly humidity levels in Morro Bay, 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.
JanFebMarAprMayJunJulAugSepOctNovDec80%83%80%76%75%74%75%72%70%70%74%77%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Morro Bay

In Morro Bay, May ushers in a notable increase in sun intensity, with a UV Index reaching an impressive 10, categorized as very high. This trend marks a continuation from April's high levels, indicating a sharp transition into the peak of solar exposure as summer approaches. With a burn time of just 15 minutes, residents and visitors alike should exercise caution and prioritize sun protection. As spring fades, the UV Index will only rise further, reaching extreme levels in the coming months. Stay informed and prepared this season by checking local forecasts at Morro Bay UV Index.

Maximum UV Index Levels in Morro Bay for May

The chart shows the monthly maximum UV Index (UVI) for Morro Bay 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.
JanFebMarAprMayJunJulAugSepOctNovDec4589101212119753
Data source: Morro Bay 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 Morro Bay

As spring transitions to early summer in Morro Bay, May shines brightly with an impressive 368 hours of sunshine, marking it as one of the sunniest months of the year. This delightful increase in daylight follows an upward trend from 316 hours in April, underscoring the region's warming embrace. The sunshine continues to rise into June, peaking at 372 hours, while July offers a remarkable 383 hours of golden rays, making it the sunniest month overall. However, as summer wains into autumn, the hours gradually decrease, reminding us of nature's rhythm. Morro Bay beautifully illustrates this cycle, with May serving as a vibrant bridge between the lush blooms of spring and the sun-drenched days of summer.

Monthly Sunshine Duration in Morro Bay: May Highlighted

The May sunshine duration represents the total number of hours Morro Bay 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.
JanFebMarAprMayJunJulAugSepOctNovDec179h229h284h316h368h372h383h358h316h295h246h223h
Data source: Morro Bay May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Morro Bay During May

In Morro Bay, the month of May stands out with a 72% chance of sunny weather, making it one of the prime months for sun lovers. This figure marks a noticeable increase from the cooler months at the beginning of the year, where the chance of sunshine hovers around the low 50s and 60s. Following May, June offers a slightly better 73% chance, indicating a trend of consistently improving weather as spring transitions into summer. With this upward trajectory, May offers a perfect opportunity to enjoy the outdoor beauty of Morro Bay, making it an ideal time for beachgoers and nature enthusiasts alike to bask in the brilliance of the Californian sun.

Percentage of Sunny Days in May in Morro Bay

The chart illustrates the percentage of sunny days in Morro Bay 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 Morro Bay experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec53%69%61%57%72%73%64%71%68%68%68%50%
Data source: Morro Bay May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Morro Bay in May

As spring gives way to summer in Morro Bay, the increase in daylight hours captivates residents and visitors alike. Starting in May, the city basks in 14 hours of sunlight, marking a peak in daylight that stretches through June and July. This surge follows a gradual ascent from 11 hours in March and 13 hours in April, creating an inviting ambiance perfect for outdoor activities. As summer wanes, daylight begins its gentle descent, tapering to 13 hours in August and gradually decreasing each month until December, where it culminates in a cozy 9 hours of daylight. This trend not only highlights the seasonal shift but also the varied experiences Morro Bay offers throughout the year, from long sun-kissed days to shorter, more intimate evenings.

Average Daylight Hours in Morro Bay for May

The chart illustrates the variation in daylight duration in Morro Bay throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 4m10h 55m11h 59m13h 6m14h 1m14h 28m14h 13m13h 24m12h 20m11h 14m10h 17m9h 48m
Data source: Morro Bay daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Morro Bay

In Morro Bay, May brings a gentle breeze with an average wind speed of 3.3 m/s (7 mph), mirroring the calming winds of the preceding months. This consistency in wind speed highlights a transitional period as spring gives way to summer, offering a refreshing atmosphere for outdoor enthusiasts. Interestingly, after a slight dip in March, where the winds were at their lowest for the year, the speeds stabilize again in April and May. As the summer months approach, the trend shows a gradual decline in wind speed, with June marking a drop to 2.8 m/s (6 mph). This pattern reveals that while May enjoys a mild breeze conducive for activities, the subsequent months will bring calmer conditions, perfect for soaking up the sun along the beautiful Morro Bay coastline.

Average May Wind Speed in Morro Bay

The chart displays monthly wind speed patterns in Morro Bay, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.33.03.33.3 m/s2.82.22.12.12.92.93.1
Data source: Morro Bay May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Morro Bay Compares to Other Months

The weather in Morro Bay 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 Morro Bay and find detailed weather information for every month.

May and January display contrasting weather patterns in terms of temperature and precipitation. May enjoys a warmer climate with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (77°F), while January is cooler, with averages between 4°C (40°F) and 23°C (74°F). Precipitation markedly differs as well; May sees only 12 mm (0.5 in) over just 2 days, whereas January experiences significantly higher rainfall of 110 mm (4.3 in) across 6 days. Additionally, January has a slightly higher humidity level at 80% compared to May's 75%. For a more detailed insight into January's weather, check out Morro Bay weather in January.

In comparing the weather of May and February, we see notable differences. May generally enjoys warmer temperatures, with a minimum of 8°C (47°F) and an average of 15°C (59°F), while February has slightly cooler temperatures, ranging from a minimum of 4°C (39°F) and an average of 12°C (54°F). Precipitation levels are also significantly higher in February, with 80 mm (3.2 in) occurring over six days, compared to the much drier May, which experiences only 12 mm (0.5 in) over two days. Additionally, February has a higher humidity of 83%, as opposed to May’s 75%, contributing to a colder and wetter overall feel. For a more detailed look at February weather specifics, you can visit Morro Bay weather in February.

When comparing the weather in May and March, May generally offers milder and drier conditions. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 25°C (77°F), with an average of 15°C (59°F) and only 12 mm of precipitation over 2 days, leading to a humidity level of 75%. In contrast, March features slightly cooler temperatures, with a minimum of 5°C (41°F), an average of 13°C (55°F), and a maximum of 24°C (76°F). However, March is significantly wetter, receiving 84 mm of rainfall across 9 days and exhibiting higher humidity at 80%. For more detailed information on March weather, visit Morro Bay weather in March.

In comparing the weather between April and May, we observe that May brings slightly warmer conditions, with average temperatures reaching 15°C (59°F) compared to April's average of 14°C (57°F). While both months experience mild temperatures, April sees a higher maximum temperature of 26°C (80°F), while May peaks at 25°C (77°F). Precipitation is notably lower in May, with only 12 mm (0.5 in) falling over two days, compared to April's 23 mm (0.9 in) over three days. Humidity levels remain quite similar, with April at 76% and May at 75%. For a more detailed look at April conditions, visit Morro Bay weather in April.

May and June weather present a distinct transition as spring moves into summer. In May, temperatures range from a minimum of 8°C (47°F) to a comfortable maximum of 25°C (77°F), with an average of 15°C (59°F). Rainfall is modest, with 12 mm (0.5 inches) of precipitation over about two days, accompanied by a humidity level of 75%. In contrast, June sees a noticeable increase in warmth, with temperatures starting at a minimum of 11°C (51°F), averaging 16°C (62°F), and peaking at a high of 31°C (88°F). Remarkably, June experiences little to no precipitation, recording just 1 mm (0.0 inches) and no rainy days, while maintaining a similar humidity level of 74%. This shift highlights the onset of drier and hotter conditions in June, making it an ideal month for outdoor activities. For more details, check Morro Bay weather in June.

May and July present distinct weather patterns, with May enjoying mild temperatures and occasional rain, while July tends to be warmer and drier. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 25°C (77°F), with an average of 15°C (59°F) and 12 mm of precipitation over 2 days. In contrast, July's temperatures start higher, with a minimum of 12°C (55°F) and peak at 31°C (89°F), averaging 18°C (64°F), and it experiences virtually no precipitation, showcasing a more stable and sunny climate. Both months have a consistent humidity level of 75%. For more details on the July climate, you can check Morro Bay weather in July.

In May, the weather presents a cool and variable climate, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (77°F) and an average temperature of 15°C (59°F). The month also sees about 12 mm (0.5 in) of precipitation over two days, contributing to a relatively high humidity level of 75%. In contrast, August boasts warmer temperatures with a minimum of 13°C (55°F) and a maximum of 31°C (88°F), averaging 18°C (65°F). Notably, August is much drier, featuring only 1 mm (0.0 in) of precipitation over the entire month and experiencing no rainy days, coupled with a slightly lower humidity of 72%. For more detailed insights, you can check out Morro Bay weather in August.

May and September offer distinct weather patterns, making each month unique. In May, temperatures range from a cooler 8°C (47°F) at night to a pleasant high of 25°C (77°F) during the day, accompanied by about 12 mm (0.5 in) of precipitation over just two days, resulting in a humidity level of 75%. In contrast, September typically features warmer temperatures, with lows around 11°C (53°F) and peak highs soaring up to 35°C (95°F). It is a notably drier month with only 1 mm (0.0 in) of precipitation and no rainy days, leading to slightly lower humidity at 70%. For more detailed insights, you can check out Morro Bay weather in September.

In comparing the weather of May and October, May typically experiences cooler temperatures with a minimum of 8°C (47°F) and a maximum of 25°C (77°F), while October sees slightly warmer temperatures, with a minimum of 9°C (49°F) and a maximum that can reach 33°C (92°F). Precipitation in May is more frequent, with about 12 mm (0.5 in) falling over two days, compared to October's drier conditions, which boast only 10 mm (0.4 in) and no rainy days. Additionally, humidity levels are comparable, with May at 75% and October slightly lower at 70%. For a more detailed look at October's climate, you can check out Morro Bay weather in October.

May and November present similar average temperatures, both hovering around 15°C (59°F), but the overall experience of each month can feel quite different. In May, temperatures range from a cool 8°C (47°F) at night to a warm 25°C (77°F) during the day, coupled with relatively low precipitation of just 12 mm (0.5 in) over about two days. In contrast, November sees a slight dip in nighttime temperatures, dropping to 6°C (42°F), while daytime highs reach up to 26°C (79°F). Notably, November experiences higher rainfall, totaling 32 mm (1.2 in) across three days, though humidity levels remain comparable at 74%. To explore more about the weather specifics in November, you can visit Morro Bay weather in November.

In May, temperatures in Morro Bay typically range from a minimum of 8°C (47°F) to a pleasant maximum of 25°C (77°F), with an average of 15°C (59°F). The month experiences relatively low precipitation at 12 mm (0.5 in) over just 2 days, alongside moderate humidity levels at 75%. In contrast, December sees cooler temperatures, with a minimum of 5°C (42°F), an average of 12°C (54°F), and a maximum of 23°C (74°F). This month is characterized by significantly higher precipitation, totaling 76 mm (3.0 in) spread over 6 days, while humidity slightly increases to 76%. For more detailed information, you can check out Morro Bay weather in December.

Compare Morro Bay's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Morro Bay

As May unfolds in Morro Bay, the weather stands out from the cooler spring months, welcoming pleasant warmth with an average temperature that invites outdoor activities. Unlike the often rainier periods preceding it, May typically enjoys just a couple of light precipitation days, maintaining a comfortable humidity level that enhances the coastal experience. This month beckons both locals and visitors to relish in the mild conditions, making it an ideal time to explore the stunning scenery. For a deeper understanding of what to expect throughout the year, check out the comprehensive details at Morro Bay Climate.