March Weather in San Diego, Mexico

Last updated: April 22, 2025

In March, San Diego's climate offers a delightful blend of warmth and sunshine, with maximum temperatures reaching up to 34°C (94°F) and an average of 22°C (72°F). The nights are pleasantly cool, dipping to a comfortable minimum of 10°C (51°F). Notably, the precipitation is minimal, with only 2 mm (0.1 in) expected and no recorded rain days, allowing for uninterrupted outdoor adventures. With a humidity level of 57%, the weather provides a refreshing backdrop for enjoying the beauty of this vibrant coastal city.

March Temperature in San Diego

In March, San Diego, Mexico, begins to show signs of warming as spring approaches, with temperatures that range from a comfortable 10°C (51°F) at night to a pleasant 34°C (94°F) during the day. The average temperature settles around 22°C (72°F), making it an ideal time for outdoor activities and enjoying the stunning coastal scenery. This month marks a gradual increase from the cooler winter temperatures of January and February, demonstrating a clear trend of rising warmth as the region transitions into the hotter months ahead. As daylight stretches longer and the sun shines brighter, visitors can expect mild evenings and sun-soaked days that perfectly capture the essence of San Diego's vibrant climate.

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

The chart illustrates March 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.
JanFebMarAprMayJunJulAugSepOctNovDec676971757984858483827670
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.

March Precipitation in San Diego

In March, San Diego, Mexico, experiences a notable dip in precipitation, recording just 2 mm (0.1 in), with no significant rainfall days. This marks a decline from the preceding months, particularly February, which saw 24 mm (0.9 in) over two days. As winter transitions into spring, the region begins to showcase its characteristic dry spell, leading into April and May, where zero precipitation is expected. This trend underscores the shift towards the arid conditions that dominate the summer months, aligning with the overall seasonal pattern observed in the area, where rainfall accumulates predominantly during the later summer and early fall.

March Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, with values for each month alongside March's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec6242002686152143434617
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Diego

In March, San Diego, Mexico, experiences a notable dip in humidity levels, averaging 57%, a refreshing change from the wetter conditions of the earlier months. This decrease follows the trend set in January (76%) and February (69%), where humidity gradually declines leading into spring. As temperatures warm up, April's levels drop even further to 49%, hinting at a shift toward more arid conditions that will characterize the late spring and early summer months. Interestingly, the humidity begins to rise again in June, climbing to 64%, and peaks dramatically during the summer, indicating a cyclical pattern influenced by seasonal changes. Overall, March serves as a transitional month, bridging the cozy humidity of winter to the more variable conditions of the upcoming seasons.

March Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, with March's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how March's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%69%57%49%49%64%82%87%88%83%84%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in San Diego

March marks a significant rise in UV exposure in San Diego, Mexico, with a UV Index of 11, classified as extreme. This increase from February’s already high level of 10 indicates that visitors and residents alike need to exercise caution when enjoying outdoor activities. With a burn time of just 10 minutes, it's crucial to protect your skin from the sun's intense rays. As we transition into April and May, the UV Index remains consistently high at 13, emphasizing the importance of sun safety during these months. Notably, from January to March, the trend shows a sharp escalation, warning us to be vigilant as we embrace the spring. For more information on UV exposure throughout the year, check out the detailed San Diego UV Index.

Maximum UV Index Levels in San Diego for March

The chart shows the monthly maximum UV Index (UVI) for San Diego in March, 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.
JanFebMarAprMayJunJulAugSepOctNovDec710111313121212121186
Data source: San Diego March 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.

March Sunshine in San Diego

March brings a remarkable transition in San Diego, Mexico, where the sun graces the city with a generous 308 hours of bright daylight. This uptick in sunshine marks a significant increase from February's 259 hours, setting the stage for the warmer months ahead. As spring unfolds, the trend continues, leading into April with even more radiant 325 hours. This upward trajectory not only enhances outdoor activities but also elevates the overall vibrancy of the city, making March a perfect time for visitors and locals alike to embrace the sunshine and enjoy the blossoming beauty of the region. With each passing month, San Diego bursts into life, promising an abundance of sunny days that only intensifies as we move toward the summer.

Monthly Sunshine Duration in San Diego: March Highlighted

The March sunshine duration represents the total number of hours San Diego experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec222h259h308h325h360h334h319h296h278h298h272h273h
Data source: San Diego March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Diego During March

March in San Diego, Mexico offers a 57% chance of sunny weather, marking a slight dip from the sunnier months of January and February. This transitional period hints at the shifting seasons as the region approaches a peak in sunshine by May, when the odds soar to 80%. Despite the lower likelihood compared to the preceding winter months, March still provides plenty of opportunities for outdoor activities before the summer heat sets in. As the year progresses into spring, the fluctuating sun chances create an inviting backdrop for visitors and locals alike to enjoy the city's vibrant atmosphere.

Percentage of Sunny Days in March in San Diego

The chart illustrates the percentage of sunny days in San Diego throughout the year, with March 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.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%57%65%80%56%40%21%40%75%62%57%
Data source: San Diego March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Diego in March

As March unfolds in San Diego, Mexico, residents and visitors alike can revel in 12 hours of daylight, marking a delightful transition from the shorter days of winter. This increase from 11 hours in February signals the approach of spring, offering an inviting opportunity for outdoor activities and exploration. Following this upward trend, daylight will plateau in April before continuing to extend, peaking at 13 hours in May and June. The gradual lengthening of daylight not only brightens the atmosphere but also enhances the vibrant cultural and natural landscape that San Diego has to offer. As summer approaches, the generous daylight hours pave the way for memorable experiences under the sun.

Average Daylight Hours in San Diego for March

The chart illustrates the variation in daylight duration in San Diego throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 47m11h 19m12h 1m12h 44m13h 19m13h 37m13h 27m12h 56m12h 15m11h 32m10h 56m10h 37m
Data source: San Diego daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in San Diego

March in San Diego, Mexico, ushers in a slight uptick in average wind speed, reaching 2.1 m/s (5 mph), a refreshing change from the preceding months. This gentle breeze not only enchants outdoor enthusiasts but also signifies the arrival of spring, when nature begins to awaken. Notably, the wind speeds remain consistent yet tranquil, with the rest of the spring months—April and May—hovering around similar rates of 1.9 m/s (4 mph) and 2.0 m/s (4 mph), respectively. As summer approaches, the winds regain a bit of their March vigor, once again reaching 2.1 m/s (5 mph) in June. Overall, March serves as a transitional month, offering a subtle breeze that complements the budding vibrancy of the season, making it a delightful time to explore the coastal beauty of San Diego.

Average March Wind Speed in San Diego

The chart displays monthly wind speed patterns in San Diego, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.82.1 m/s1.92.02.11.61.51.41.61.71.8
Data source: San Diego March wind data, generated using information from the Copernicus Climate Change Service.

How March 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 March'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 March, the weather is generally warmer and drier compared to January. March experiences an average temperature of 22°C (72°F) with a minimum of 10°C (51°F) and a maximum of 34°C (94°F). In contrast, January has a slightly cooler average temperature of 20°C (68°F), ranging from a minimum of 8°C (47°F) to a maximum of 33°C (91°F). Notably, March has only 2 mm (0.1 in) of precipitation over zero days, while January sees more rain with 6 mm (0.3 in) falling on one day. Additionally, the humidity is lower in March at 57% compared to January’s higher 76%. For more detailed insights, check out San Diego weather in January.

March weather showcases a noticeable warmth compared to February, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 34°C (94°F), averaging 22°C (72°F). In contrast, February sees slightly cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 33°C (92°F), averaging 20°C (69°F). Additionally, March is significantly drier, recording only 2 mm (0.1 in) of precipitation over the entire month and no rainy days, while February experiences 24 mm (0.9 in) of precipitation over 2 days. The humidity levels also differ, with March at 57% and February higher at 69%. For more details on February weather, check out San Diego weather in February.

In comparing the weather of March and April, March experiences a slightly cooler temperature range with a minimum of 10°C (51°F) and a maximum of 34°C (94°F), while April sees an increase, with temperatures dipping only to 12°C (53°F) and peaking at 36°C (97°F). Both months showcase remarkably low precipitation, with March recording just 2 mm (0.1 in) and April remaining entirely dry. Additionally, humidity levels are higher in March at 57%, compared to a more comfortable 49% in April. For more specific details on April weather, visit San Diego weather in April.

March and May exhibit notable differences in weather patterns. In March, temperatures range from a minimum of 10°C (51°F) to a maximum of 34°C (94°F), averaging around 22°C (72°F), with a modest humidity level of 57%. Precipitation is virtually nonexistent, with 2 mm recorded over the entire month. In contrast, May offers warmer temperatures, starting at a minimum of 15°C (60°F) and reaching up to 37°C (98°F), while the average high sits at 26°C (80°F). This month also boasts a drier climate, with no recorded precipitation days and lower humidity at 49%. For a more detailed comparison of the weather in May, you can visit San Diego weather in May.

In March, temperatures in the region range from a minimum of 10°C (51°F) to a maximum of 34°C (94°F), with an average of 22°C (72°F). The month experiences minimal precipitation, totaling just 2 mm (0.1 in) over zero rainy days, and has a humidity level of 57%. By June, the weather shifts significantly, with temperatures starting at a minimum of 20°C (68°F) and peaking at 38°C (100°F), leading to an average of 29°C (84°F). June is wetter, with 26 mm (1.0 in) of rainfall spread over three days, and humidity slightly increases to 64%. For more detailed information about weather conditions during this month, check out San Diego weather in June.

March and July showcase distinct weather patterns that highlight the transition from early spring to mid-summer. In March, temperatures range from a minimum of 10°C (51°F) to a comfortable average of 22°C (72°F), peaking at a maximum of 34°C (94°F). Notably, the month experiences very little precipitation, with only 2 mm recorded across zero rainy days and a humidity level of 57%.

In contrast, July brings significantly warmer temperatures, with a minimum of 23°C (74°F) and an average of 29°C (85°F), reaching highs of up to 37°C (100°F). This month also sees a marked increase in rainfall, totaling 86 mm over approximately 14 days, accompanied by higher humidity levels at 82%. For more insights into the summer climate, check out San Diego weather in July.

March and August present remarkably different weather patterns. In March, temperatures range from a mild 10°C (51°F) at night to a warm 34°C (94°F) during the day, with an average of 22°C (72°F). This month enjoys very low precipitation, with no rainy days and humidity sitting at a comfortable 57%. In contrast, August sees significantly warmer temperatures, with a minimum of 23°C (75°F) and daytime highs reaching 37°C (98°F), averaging around 29°C (85°F). The month is also characterized by high humidity at 87% and substantial rainfall, averaging 152 mm (6.0 in) spread across 19 days. For more detailed insights, check San Diego weather in August.

In March, the weather is relatively mild with temperatures ranging from a minimum of 10°C (51°F) to a comfortable average of 22°C (72°F), peaking at 34°C (94°F). With only 2 mm (0.1 in) of precipitation and no rainy days, humidity is at a moderate 57%. In contrast, September presents a hotter climate, with temperatures starting at a minimum of 23°C (74°F), averaging 28°C (83°F), and reaching up to a maximum of 36°C (97°F). However, it also brings significantly more rainfall, with 143 mm (5.6 in) spread over 20 days, resulting in higher humidity at 88%. For a closer look at September weather, you can check San Diego weather in September.

In March, the weather is generally warmer with average temperatures ranging from a mild 10°C (51°F) at night to a maximum of 34°C (94°F) during the day. This month experiences minimal rainfall, with just 2 mm (0.1 in) and no rainy days, accompanied by a humidity level of 57%. In contrast, October sees higher temperatures, with lows around 18°C (64°F) and afternoon highs reaching up to 37°C (98°F). However, it also brings more precipitation, totaling 43 mm (1.7 in) over five days, and a higher humidity level of 83%. For further details on October weather, you can explore San Diego weather in October.

March offers a pleasant spring climate, with temperatures ranging from a comfortable min of 10°C (51°F) to an average of 22°C (72°F) and a warm max of 34°C (94°F). The month is incredibly dry, receiving only 2 mm (0.1 in) of precipitation and maintaining a moderate humidity level of 57%. In contrast, November experiences slightly higher temperatures, with a minimum of 14°C (58°F) and an average of 25°C (77°F), while reaching a maximum of 36°C (98°F). However, it is also a much wetter month, with 46 mm (1.8 in) of rainfall over just 2 days, leading to increased humidity at 84%. For more insights into November's weather, you can check San Diego weather in November.

In comparing the weather of March and December, we find that both months share similar temperature ranges, with March having a slightly warmer average of 22°C (72°F) compared to December's 21°C (70°F). Both months can experience maximum temperatures reaching up to 34°C (94°F). However, March is much drier, with only 2 mm of precipitation, while December sees significantly higher precipitation at 17 mm over two days. Additionally, humidity levels are notably higher in December at 86%, compared to March's 57%. For more insights into December weather, you can check San Diego weather in December.

Compare San Diego's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in San Diego

As March arrives in San Diego, the city experiences a delightful shift in weather that sets the tone for spring. With average temperatures around 22°C (72°F), this month offers a welcome respite compared to the cooler winter months, ushering in milder days for outdoor adventures. Precipitation is almost nonexistent, with no rainy days recorded, allowing residents and visitors to bask in the sunshine and enjoy the refreshing coastal breezes. While humidity hovers around 57%, it's still quite comfortable, providing a perfect backdrop for the blooming landscapes. For a deeper dive into what San Diego has to offer throughout the year, be sure to check out San Diego Climate.