April Weather in San Diego, Mexico

Last updated: April 22, 2025

In April, San Diego, Mexico experiences a diverse range of temperatures, with highs soaring to a scorching 40°C (104°F) and an average of 28°C (84°F), while nighttime temperatures can dip to a mild 16°C (61°F). The month sees an average precipitation total of 26 mm (1.0 in), spread over approximately 5 days, contributing to the area's moderate humidity levels of 64%. This combination of warmth and occasional rain makes April a dynamic time to enjoy the region’s vibrant landscapes and outdoor activities.

April Temperature in San Diego

In April, San Diego, Mexico, welcomes a delightful transition into warmer weather, with temperatures ranging from a minimum of 16°C (61°F) to a steamy maximum of 40°C (104°F). This month typically boasts an average temperature of 28°C (84°F), marking a steady increase from the cooler months of January and February. The gradual rise in temperatures is evident, as April offers a refreshing blend of warmth that hints at the summer heat to come. As the region sheds its cooler winter months, visitors can expect plenty of sunshine and pleasantly warm evenings, making it an ideal time to explore the vibrant outdoor activities and stunning landscapes San Diego has to offer.

April Weather in San Diego: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in San Diego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec747880838482838382807775
Data source: Temperature data for San Diego 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.

April Precipitation in San Diego

In April, San Diego, Mexico, experiences a notable increase in precipitation, totaling 26 mm (1.0 in) across 5 days of rain. This marks a slight rise compared to the earlier months, with January delivering the highest amount at 30 mm. The transition into April signals the approach of the wetter season, as rain becomes more frequent, paving the way for the much wetter months ahead. Following April, May and June see significant surges, with May reaching 54 mm (2.1 in) and June dramatically escalating to 192 mm (7.5 in). This pattern underscores a clear trend: as spring blossoms into summer, San Diego's rainfall intensifies, setting the stage for the lush landscapes and vibrant flora characteristic of the region's warm months.

April Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec301082654192681031281295325
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Diego

In April, San Diego, Mexico, experiences a noticeable dip in humidity, with levels averaging 64%—a refreshing change that heralds the transition to warmer months. This reduction follows a gradual decline from March's 69%, marking a shift from the cooler, wetter winter months. As spring unfolds, humidity continues to decrease slightly into May, settling at 63%, before a subtle rise returns in July. Such fluctuations reveal a climatic pattern where humidity is highest in the late summer and early fall, often peaking in September and October, making April a particularly pleasant time for outdoor activities in this coastal region.

April Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%69%64%63%62%65%78%86%87%88%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Diego

As the sun shines brightly in April, San Diego experiences an UV Index of 13, classifying it under the extreme exposure category. This consistent rating, which has been seen since March, reflects a trend of heightened UV intensity in the spring months that starts to intensify earlier in the year. With a burn time of just 10 minutes, it’s crucial for residents and visitors to take protective measures against potential skin damage. Looking ahead, this trend continues into May and June, making April a pivotal month for UV awareness. For more detailed information on the UV Index throughout the year, visit San Diego UV Index.

Maximum UV Index Levels in San Diego for April

The chart shows the monthly maximum UV Index (UVI) for San Diego in April, 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.
JanFebMarAprMayJunJulAugSepOctNovDec911131313131312121198
Data source: San Diego April 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.

April Sunshine in San Diego

April in San Diego, Mexico, offers a delightful balance of sunshine, with 312 hours of brilliant daylight illuminating the picturesque landscapes. As spring settles in, one can appreciate a slight dip from March's peak of 316 hours, yet the sun-soaked charm remains undeniable. This month also marks a transition toward the warmer summer days, foreshadowed by the surge in May to 328 hours of sunshine. Overall, the months leading into and out of April create a vibrant tapestry of light, ensuring that adventure seekers and relaxation enthusiasts alike can relish in San Diego’s year-round appeal.

Monthly Sunshine Duration in San Diego: April Highlighted

The April sunshine duration represents the total number of hours San Diego experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec224h270h316h312h328h271h316h314h291h275h282h288h
Data source: San Diego April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Diego During April

In April, San Diego, Mexico, experiences a 57% chance of sunny weather, continuing a trend of rising sunshine hours from the earlier months. After a warm February and March, where sunny days peaked at 62% and 66%, April maintains a respectable likelihood of clear skies before heading into the slightly less sunny days of May and June, at 41% and 30%, respectively. This fluctuation highlights how spring emerges as a delightful transitional period, providing ample opportunity for outdoor activities in the comfortable warmth of the sun, before the summer heat takes hold.

Percentage of Sunny Days in April in San Diego

The chart illustrates the percentage of sunny days in San Diego throughout the year, with April 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 Diego experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%62%66%57%41%30%42%50%32%47%58%63%
Data source: San Diego April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Diego in April

As April arrives in San Diego, Mexico, residents and visitors alike can enjoy 12 hours of daylight, marking a continuation of the gradual increase witnessed since March. This month signifies a transition toward longer days, as the sun lingers longer in the sky, inviting outdoor activities and explorations. Following April, May pushes the daylight to 13 hours, heralding the summer months ahead. Interestingly, from January to February, the daylight remains steady at 11 hours, but signs of spring become evident as the days lengthen noticeably in March. April effectively bridges the gap to the sun-soaked summer months, making it a perfect time to relish the vibrant atmosphere of San Diego.

Average Daylight Hours in San Diego for April

The chart illustrates the variation in daylight duration in San Diego throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 4m11h 29m12h 2m12h 36m13h 4m13h 17m13h 10m12h 45m12h 13m11h 39m11h 10m10h 56m
Data source: San Diego daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in San Diego

April in San Diego, Mexico, brings a delightful breeze, with an average wind speed of 3.1 m/s (7 mph), echoing the steady winds felt in March and May. This gentle wind pattern marks the transition into warmer months while providing a refreshing reprieve from the rising heat. Interestingly, as spring unfolds, the wind speeds begin to plateau, suggesting a balance between the stirring gusts of earlier months and the calmer days of summer ahead. As we move towards June, the winds dip slightly, hinting at a seasonal shift, yet April's consistent breezes ensure that the coastal charm of San Diego remains captivating and invigorating.

Average April Wind Speed in San Diego

The chart displays monthly wind speed patterns in San Diego, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.83.13.1 m/s3.12.82.52.42.31.72.02.5
Data source: San Diego April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in San Diego Compares to Other Months

The weather in San Diego changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in San Diego and find detailed weather information for every month.

In comparing the weather between January and April, we see significant differences in temperature and humidity. January tends to be cooler, with minimum temperatures around 11°C (52°F) and an average of 23°C (75°F), while April heats up significantly, with minimums of 16°C (61°F) and averages reaching 28°C (84°F). Rainfall is slightly more prevalent in January, with 30 mm (1.2 in) over about 4 days, compared to 26 mm (1.0 in) spread over 5 days in April. Additionally, January's humidity is notably higher at 85%, whereas April sees a decrease to 64%. For more detailed insights into January weather, visit San Diego weather in January.

When comparing the weather between April and February, a noticeable difference in temperature and humidity can be observed. April experiences warmer conditions, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 40°C (104°F) and an average of 28°C (84°F). In contrast, February has cooler temperatures, with a minimum of 10°C (50°F), an average of 25°C (78°F), and a maximum of 36°C (97°F). Precipitation is also higher in April, with 26 mm (1.0 in) over about five days, compared to February's 10 mm (0.4 in) over three days. Additionally, February tends to be more humid at 80%, while April has a lower humidity level of 64%. For more detailed information on February weather, you can refer to San Diego weather in February.

April weather shows a noticeable increase in temperature compared to March. With minimum temperatures averaging around 16°C (61°F) and maximums reaching up to 40°C (104°F), April is generally warmer, with an average temperature of 28°C (84°F) versus March's average of 27°C (80°F). Precipitation in April is also higher, totaling 26 mm (1.0 in) over five days, while March experiences just 8 mm (0.3 in) on a single day. Humidity remains relatively consistent, slightly dropping from 69% in March to 64% in April. For more detailed information, you can check San Diego weather in March.

In comparing the weather between April and May, we see a slight increase in temperature, with May having a minimum of 18°C (65°F) and an average of 29°C (85°F), compared to April's minimum of 16°C (61°F) and average of 28°C (84°F). Both months experience high temperatures, but May's maximum is a bit cooler at 39°C (102°F) compared to April's 40°C (104°F). Precipitation increases significantly in May, totaling 54 mm (2.1 in) over 9 days, while April recorded only 26 mm (1.0 in) over 5 days. Despite the increased rainfall, May maintains a similar humidity level at 63%, slightly lower than April's 64%. For more details on the weather in May, check out San Diego weather in May.

April and June have distinct weather profiles, with April offering slightly cooler temperatures, ranging from a minimum of 16°C (61°F) to a maximum of 40°C (104°F) and an average of 28°C (84°F). In contrast, June sees warmer nights with a minimum of 22°C (72°F) while the average temperature remains similar at 28°C (83°F), but the maximum cools slightly to 38°C (101°F). However, June is marked by significantly higher precipitation, totaling 192 mm (7.5 in) over 17 days, compared to April's 26 mm (1.0 in) across just 5 days. This increase in rainfall offers a notable shift in humidity as well, with April at 64% and June slightly lower at 62%. For more details on June weather, you can check out San Diego weather in June.

April and July exhibit distinct weather characteristics. In April, temperatures range from a minimum of 16°C (61°F) to a maximum of 40°C (104°F), with an average temperature of 28°C (84°F). The month sees relatively low precipitation at 26 mm (1.0 in) over about 5 days, along with a humidity level of 64%. In contrast, July boasts slightly warmer minimum temperatures at 22°C (72°F) and a maximum of 38°C (100°F), while maintaining an average temperature around the same as April at 28°C (83°F). However, July experiences significantly higher precipitation of 68 mm (2.7 in) across 14 days, and humidity increases marginally to 65%. For more details, you can check San Diego weather in July.

April and August exhibit distinct weather characteristics, showcasing the transition from spring to late summer. In April, temperatures range from a pleasant minimum of 16°C (61°F) to a sweltering maximum of 40°C (104°F), with an average of 28°C (84°F). The month experiences relatively low precipitation at 26 mm (1.0 in) over 5 days and a moderate humidity level of 64%. In contrast, August sees slightly higher minimum temperatures at 21°C (71°F) and a more stable average of 28°C (83°F), but with a cooler maximum of 37°C (99°F). However, it is considerably wetter, receiving 103 mm (4.1 in) of rainfall over 18 days, contributing to a higher humidity of 78%. For a deeper understanding of weather patterns, check San Diego weather in August.

In April, temperatures in the region range from a pleasant 16°C (61°F) at night to a hot 40°C (104°F) during the day, with an average temperature of 28°C (84°F). The month typically sees low precipitation at 26 mm (1.0 in) over about 5 days, contributing to a moderate humidity level of 64%. In contrast, September experiences warmer nights with a minimum temperature of 22°C (71°F) and slightly cooler daytime highs averaging 28°C (82°F) while peaking at 37°C (98°F). However, September is significantly wetter, with total precipitation reaching 128 mm (5.0 in) spread across around 21 days, leading to a higher humidity of 85%. For more detailed insights, you can refer to San Diego weather in September.

In April, temperatures in San Diego range from a minimum of 16°C (61°F) to a scorching maximum of 40°C (104°F), with an average of 28°C (84°F). The month sees relatively low precipitation, with only 26 mm (1.0 in) over about 5 days, and humidity levels at 64%. In contrast, October offers milder temperatures, with a minimum of 16°C (62°F), an average of 27°C (80°F), and a maximum of 36°C (97°F). However, it is much wetter, receiving 129 mm (5.1 in) of precipitation over 21 days, leading to higher humidity levels of 87%. For more detailed information, you can check San Diego weather in October.

In April, temperatures range from a minimum of 16°C (61°F) to a sweltering maximum of 40°C (104°F), with an average of 28°C (84°F), accompanied by relatively low precipitation of 26 mm (1.0 in) over about 5 days and humidity levels around 64%. In contrast, November brings cooler temperatures, with a minimum of 13°C (55°F) and a maximum of 34°C (93°F), averaging 25°C (77°F). This month sees increased precipitation at 53 mm (2.1 in) over 11 days and higher humidity at 88%. For more detailed information, check out San Diego weather in November.

April offers a warm and dynamic climate, with temperatures ranging from a comfortable minimum of 16°C (61°F) to sweltering highs of 40°C (104°F). This month averages 28°C (84°F) and experiences about 26 mm (1.0 in) of precipitation over five days, with humidity levels around 64%. In contrast, December presents a cooler atmosphere, where the minimum temperature drops to 10°C (51°F) and maximum temperatures reach 34°C (93°F), averaging 24°C (75°F). The precipitation remains similar at 25 mm (1.0 in) over five days, but the humidity is noticeably higher at 88%. This stark difference in temperature and humidity makes April feel more tropical and dry while December embraces a milder and more humid feel. For more detailed insights, check San Diego weather in December.

Compare San Diego's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in San Diego

April in San Diego marks the transition to warmer weather, offering an average temperature that is noticeably higher than the cooler months. With temperatures peaking at a maximum of 40°C (104°F), this month welcomes spring with warmth, though it still retains hints of the mild mornings typical of the season. Rainfall is modest, typically resulting in only a few days of precipitation, which keeps the landscape vibrant without dampening outdoor activities. The humidity level during this month hovers around 64%, contributing to a pleasantly comfortable atmosphere perfect for exploring all that San Diego has to offer. For a deeper understanding of how April fits into the broader patterns of local weather, visit San Diego Climate.