May Weather in Oceanside, United States

Last updated: February 24, 2025

May in Oceanside, United States brings a delightful blend of mild temperatures and gentle breezes. With a maximum of 26°C (79°F) and an average of 17°C (63°F), the weather is perfect for outdoor activities. Although the minimum temperature drops to 12°C (53°F), the pleasant climate fosters an inviting atmosphere. Expect light precipitation, with an average of 14 mm (0.6 in) over 4 days, while humidity levels hover around 70%, adding to the coastal charm. This month serves as a lovely transition into summer, beckoning locals and visitors alike to enjoy the sunny days along the coast.

May Temperature in Oceanside

In May, Oceanside begins to embrace the warmth of spring, with temperatures ranging from a minimum of 12°C (53°F) to a delightful maximum of 26°C (79°F). The average temperature settles at a comfortable 17°C (63°F), providing the perfect backdrop for outdoor activities and beach visits. As the month progresses, you can expect a gentle transition, with temperatures gradually climbing from the cooler early hours to pleasantly warm afternoons. Compared to earlier months, May showcases a consistent increase in warmth, reflecting the area's shift towards the vibrant summer season ahead. With such inviting weather, May is an ideal time to enjoy the coastal charm of Oceanside.

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

The chart illustrates May temperature patterns in Oceanside, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec585759616266717271696459
Data source: Temperature data for Oceanside 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 Oceanside

In May, Oceanside experiences a notable decline in precipitation, with only 14 mm (0.6 in) of rain falling over four days. This marks a continued trend of decreasing rainfall as spring transitions into summer, following a notably wetter April that saw 23 mm (0.9 in). The pattern suggests that as the year progresses towards the dry summer months, rain becomes increasingly rare, evidenced by the sharp decrease to just 3 mm in June and July. This seasonal shift not only highlights the region's Mediterranean climate but also indicates that May serves as a transitional month where residents can enjoy drier days while still benefiting from the remnants of spring moisture.

May Precipitation Trends in Oceanside

The chart displays monthly precipitation patterns in Oceanside, 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.
JanFebMarAprMayJunJulAugSepOctNovDec54564523143313102163
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Oceanside

In Oceanside, United States, the humidity in May holds steady at 70%, marking a continuation of the trend established in April. This slight dip from earlier months reflects a gradual transition as the climate shifts towards summer. Notably, the humidity peaks in the winter months, reaching 79% in February, before beginning a gentle decline. These fluctuations suggest that while spring brings milder conditions, the coastal air remains consistently refreshing, setting the stage for the warmer, drier days ahead in June and July. Overall, with its moderate humidity levels, Oceanside offers a comfortable environment during this time of year, perfect for outdoor activities.

May Average Humidity in Oceanside

This chart illustrates the average monthly humidity levels in Oceanside, 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 Oceanside

As May rolls in, Oceanside experiences a significant leap in its UV Index, soaring to an extreme level of 11. This stark rise signals that sun protection becomes increasingly crucial, with a rapid burn time of just 10 minutes under the sun's intense rays. After a gradual climb from a moderate UV Index of 4 in January to a high of 10 in April, May marks the beginning of the most intense UV periods of the year, which continue into June and July. As the summer approaches, staying vigilant about sun safety is essential for residents and visitors alike. For more insights into the UV trends throughout the year, check out Oceanside UV Index.

Maximum UV Index Levels in Oceanside for May

The chart shows the monthly maximum UV Index (UVI) for Oceanside 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101112111010754
Data source: Oceanside 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 Oceanside

May shines brightly in Oceanside, United States, as it basks in an impressive 347 hours of sunshine, marking a significant increase from the previous months. This upward trend in sunshine hours continues the ascent begun in January, where only 189 hours graced the skies. Each month leading into May shows a steady climb, peaking in June with 363 hours. This progression not only highlights the beauty of spring but also sets the stage for the summer months, where July enjoys even more sun with 376 hours. With daylight hours on the rise, May offers a perfect blend of warmth and light, inviting residents and visitors alike to embrace the vibrant coastal charm of Oceanside.

Monthly Sunshine Duration in Oceanside: May Highlighted

The May sunshine duration represents the total number of hours Oceanside 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.
JanFebMarAprMayJunJulAugSepOctNovDec189h238h291h317h347h363h376h359h314h292h254h225h
Data source: Oceanside May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Oceanside During May

In Oceanside, California, the likelihood of sunny weather sees a notable decline in May, dropping to 34% - significantly lower than the preceding months. This trend marks a stark contrast to the relatively brighter spring months: January through March enjoy probabilities of 59% to 62% sun, while April sees a slight dip to 47%. After May, the chance of sunny days gradually rises again as summer approaches, with June and July at 45% and 53% respectively. This pattern highlights May as a transitional month, often giving way to the increased cloud cover typical of late spring. As such, while sunny days may be less frequent in May, the warm California climate still offers plenty of charm during this month.

Percentage of Sunny Days in May in Oceanside

The chart illustrates the percentage of sunny days in Oceanside 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 Oceanside experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%59%62%47%34%45%53%56%58%63%63%46%
Data source: Oceanside May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Oceanside in May

In Oceanside, United States, May marks a delightful continuation of bright days with an average of 13 hours of daylight. This month, sunshine persists at the same duration as April, providing plenty of light for outdoor activities and celebrating the essence of spring. Following May, daylight gradually increases to 14 hours in June and July, showcasing the peak of summer. As the year progresses, the daylight starts to taper off, with hours decreasing back to 12 in September and continuing its descent towards winter. This rhythmic pattern underscores the charm of each season in Oceanside, inviting residents and visitors alike to embrace nature's transformations throughout the year.

Average Daylight Hours in Oceanside for May

The chart illustrates the variation in daylight duration in Oceanside throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 13m11h12h13h 1m13h 52m14h 18m14h 4m13h 18m12h 19m11h 18m10h 25m9h 58m
Data source: Oceanside daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Oceanside

In Oceanside, United States, the average wind speed in May mirrors the calm breeziness of the preceding months, registering a gentle 2.7 m/s (6 mph). This steady wind pattern, consistent with the averages from January through April, suggests a tranquil shift into late spring. As the season progresses, there's a discernible decrease in wind speeds during the summer months, with June seeing a slight dip to 2.5 m/s. By July and August, the winds further mellow to 2.3 m/s (5 mph), highlighting a trend towards calmer conditions. Despite the lull in summer, the return of brisker winds in December, peaking again at 2.9 m/s, keeps the coastal area vibrant and breezy year-round. Overall, the wind dynamics in Oceanside create a serene yet engaging atmosphere perfect for spring and summer activities.

Average May Wind Speed in Oceanside

The chart displays monthly wind speed patterns in Oceanside, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.72.22.92.82.7 m/s2.52.32.32.32.42.02.9
Data source: Oceanside May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Oceanside Compares to Other Months

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

May and January present distinctly different weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a comfortable average of 17°C (63°F), peaking at 26°C (79°F). This month experiences relatively low precipitation of 14 mm (0.6 in) over four days, with humidity at 70%. In contrast, January sees a lower minimum temperature of 8°C (47°F) and an average temperature of 14°C (58°F), with highs reaching up to 27°C (82°F). However, January is significantly wetter, with 54 mm (2.1 in) of rainfall over five days and slightly higher humidity at 74%. For more details on January's weather, you can check Oceanside weather in January.

When comparing the weather in May and February, we see notable differences in temperature and precipitation. May enjoys warmer temperatures, with a minimum of 12°C (53°F) and an average of 17°C (63°F), while February starts cooler, with a minimum of 7°C (44°F) and an average of 14°C (58°F). Interestingly, both months showcase similar maximum temperatures, with February peaking at 25°C (78°F) and May reaching 26°C (79°F). However, February experiences significantly higher precipitation, totaling 56 mm (2.2 in) over six days compared to May’s relatively dry conditions with only 14 mm (0.6 in) across four days. The humidity is slightly higher in February at 79%, compared to May’s 70%. For more details on February weather, check out Oceanside weather in February.

In comparing the weather of March and May, we can observe notable differences in temperature and precipitation patterns. May enjoys warmer temperatures, with averages reaching 17°C (63°F) and maximums of 26°C (79°F), compared to March's average of 15°C (59°F) and maximums of 24°C (75°F). Additionally, May tends to be drier, receiving only 14 mm (0.6 in) of precipitation over 4 days, while March sees significantly more rainfall at 45 mm (1.8 in) across 9 days. Humidity levels are slightly lower in May at 70%, compared to March’s 75%. For a more detailed view of March's weather, you can check Oceanside weather in March.

When comparing the weather of May and April, we see some notable differences. In May, the minimum temperature is slightly higher at 12°C (53°F) compared to April's 10°C (50°F), while the average temperature remains similar at around 17°C (63°F) in May versus 16°C (61°F) in April. However, April experiences a higher maximum temperature of 29°C (85°F) compared to May's peak of 26°C (79°F). Additionally, April sees more precipitation, measuring 23 mm (0.9 in) over 3 days, whereas May has only 14 mm (0.6 in) over 4 days. Both months exhibit a humidity level of 70%. For more detailed information on the weather patterns during this time, you can check Oceanside weather in April.

In comparing the weather of May and June, we see a gradual warming trend. May boasts a minimum temperature of 12°C (53°F) and an average of 17°C (63°F), with a maximum reaching 26°C (79°F). It also experiences some rainfall, with 14 mm (0.6 in) over four days, and a humidity level of 70%. In contrast, June enjoys slightly warmer conditions, with a minimum of 14°C (57°F) and an average of 19°C (66°F), while the maximum temperature increases to 29°C (85°F). Rainfall drops significantly in June to just 3 mm (0.1 in) with no rainy days, and humidity remains relatively stable at 72%. For more details, check out Oceanside weather in June.

May and July exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 26°C (79°F), with an average of 17°C (63°F). The month experiences moderate precipitation of 14 mm (0.6 in) over four days, and humidity levels sit at around 70%. In contrast, July brings consistently warmer temperatures, with a minimum of 17°C (62°F) and soaring to a maximum of 35°C (94°F), averaging at 21°C (71°F). This month is characterized by significantly lower precipitation, only 3 mm (0.1 in) and no rainy days, while humidity slightly increases to 73%. For further details on the weather during this month, you can check Oceanside weather in July.

May and August present distinctly different weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 26°C (79°F), with an average of 17°C (63°F). This month experiences moderate precipitation of 14 mm (0.6 in) over four days, contributing to a relatively high humidity level of 70%. In contrast, August enjoys warmer temperatures, with a minimum of 17°C (64°F), an average of 22°C (72°F), and a maximum of 30°C (86°F). Notably, August is much drier, with only 1 mm (0.0 in) of precipitation recorded throughout the month and no rainy days, while humidity remains slightly lower at 69%. For more detailed insights, check out the Oceanside weather in August.

May and September present quite different weather experiences. In May, temperatures range from a mild minimum of 12°C (53°F) to a comfortable maximum of 26°C (79°F), with an average of 17°C (63°F). The month is relatively damp, with about 14 mm (0.6 in) of precipitation spread over 4 days and humidity levels at 70%. Conversely, September showcases warmer conditions, with minimum temperatures starting at 15°C (60°F) and peaking at a sweltering maximum of 34°C (93°F), averaging 22°C (72°F). This month sees significantly less rainfall, only about 3 mm (0.1 in) on just 1 day, and a slightly lower humidity level of 68%. For more details on September weather, check out Oceanside weather in September.

In May, temperatures range from a comfortable minimum of 12°C (53°F) to a pleasant maximum of 26°C (79°F), with an average of 17°C (63°F). The month experiences around 14 mm (0.6 in) of precipitation over about four days, contributing to a humidity level of 70%. In contrast, October boasts slightly cooler nights with a minimum of 11°C (52°F), while daytime highs can reach up to 36°C (97°F), resulting in an average of 20°C (69°F). Notably, October is drier, with only 10 mm (0.4 in) of rain falling on just one day, and humidity levels decrease slightly to 67%. For more detailed information about October weather, visit Oceanside weather in October.

In comparing May and November weather, both months showcase mild temperatures, but with some notable differences. May typically experiences a minimum temperature of 12°C (53°F) and an average of 17°C (63°F), while November sees slightly lower minimums at 10°C (49°F) and a comparable average of 18°C (64°F). November also has a maximum temperature that can reach up to 29°C (84°F), which is notably higher than May's maximum of 26°C (79°F). When it comes to precipitation, November has a higher total at 21 mm (0.8 in) over just 2 days, compared to May's 14 mm (0.6 in) over 4 days. Both months maintain a similar level of humidity, with May at 70% and November at 68%. For a more detailed look at November weather, check out Oceanside weather in November.

May typically offers warmer temperatures, with an average of 17°C (63°F) and maximums reaching up to 26°C (79°F), making it a pleasant time for outdoor activities. In contrast, December's temperatures are cooler, averaging 15°C (59°F) with minimums dropping to 7°C (46°F). While both months experience similar maximum temperatures, December sees significantly more precipitation at 63 mm (2.5 in) over approximately 5 days compared to May's 14 mm (0.6 in) over 4 days. Humidity levels are comparable, with May at 70% and December slightly higher at 71%. For more specifics about the weather during this month, check out Oceanside weather in December.

Compare Oceanside's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Oceanside

As spring transitions into summer, May in Oceanside offers a delightful change in weather that sets the tone for the warmer months ahead. With average temperatures hovering around a comfortable 17°C (63°F) and maximums reaching 26°C (79°F), it's the perfect time to enjoy outdoor activities. The humidity sits at a balmy 70%, giving the air a refreshing feel, while light precipitation—just 14 mm over a few days—ensures the landscape stays lush without deterring outdoor plans. This warm and inviting climate is a welcome contrast to the cooler temperatures of early spring and the drier conditions that characterize the summer months. For more insights into what to expect throughout the year, check out Oceanside Climate.