Last updated: February 24, 2025
March in San Francisco showcases a delightful transition into spring, with maximum temperatures reaching a comfortable 20°C (69°F) and a cool average of 12°C (53°F). Visitors can expect an invigorating atmosphere, complemented by a minimum temperature dipping to 5°C (42°F) during the cooler nights. The month also brings about 78 mm (3.1 in) of rainfall, spread across approximately 10 days, hinting at those iconic, misty moments that the city is known for. With an humidity level averaging 82%, the air is often fresh, adding to the charm of exploring this vibrant city during the early spring.
In March, temperatures in San Francisco begin to transition from the cooler winter months, with a minimum of 5°C (42°F) and an average of 12°C (53°F). The highs reach around 20°C (69°F), offering a pleasant beginning to spring that encourages outdoor activities. This month marks a slight rise compared to February's steady averages, signaling the city's gradual warming trend. As the days lengthen and the chill recedes, residents and visitors alike can enjoy the crisp yet mild climate, making it an ideal time for exploring the vibrant cityscape and its famed landmarks.
In March, San Francisco experiences a noticeable dip in precipitation, with 78 mm (or 3.1 inches) falling over 10 days, marking a transition from the wetter winter months. This reduction is a stark contrast to the over 100 mm seen in both January and February. The shift heralds the onset of spring, where the city gradually shifts towards drier conditions in April, with only 35 mm (1.4 inches) expected. As the month progresses, there’s a clear trend towards dryness, with May and June exhibiting significantly lower rainfall, culminating in virtually no precipitation during the summer months. This pattern not only reflects the seasonal dynamics of the region but also prepares the landscape for the vibrant growth that characterizes the springtime in San Francisco.
In March, San Francisco experiences a humidity level of 82%, maintaining the same rate as February. This consistency in humidity is indicative of a transitional period as the city moves from the cooler winter months into the more temperate spring season. As we progress into April, humidity dips slightly to 79%, suggesting a gradual drying trend as the warmer months approach. Interestingly, the summer months see a rise in humidity, peaking at 87% in both July and August. This pattern highlights the city's unique climatic influences, where the coastal breeze keeps conditions relatively moist, especially during the warmer seasons. Overall, March serves as a pivot point, linking the dampness of winter to the upcoming fluctuations of summer.
As March arrives in San Francisco, the UV Index climbs to 8, marking a transition to the very high exposure category. This increase signals a significant shift from the cooler winter months, where January and February boasted moderate levels and longer burn times of 30 minutes. With the arrival of spring, residents and visitors must now be aware that unprotected skin can burn in just 15 minutes. The trend foreshadows an even more intense April and May, where UV levels reach 9 and 10, respectively, highlighting the need for effective sun protection as outdoor activities become more appealing. For more details on protecting yourself under the sun, check the San Francisco UV Index.
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March marks a delightful transition into spring in San Francisco, bringing an impressive average of 263 hours of sunshine. This increase from 216 hours in February signals the city's gradual awakening from winter's embrace. As the days lengthen, March not only showcases a beautiful surge in sunlight but also sets the stage for a steady climb towards summer, with April reaching 296 hours and May basking in a glorious 341 hours. This upward trend reflects the city's unique climatic charm, where the allure of bright, sunny days resonates with both locals and visitors alike, making March a perfect time to explore the vibrant streets and scenic vistas of San Francisco.
March in San Francisco marks a notable shift toward sunnier weather, boasting a 62% chance of sunshine—its highest percentage since January. As winter transitions to spring, this increase is particularly inviting, especially when compared to February's 56% and April's slight dip back to 56%. The sunnier days of March not only herald the approach of summer but also encourage locals and visitors alike to embrace outdoor activities. Following March, May sees a rise to 66%, making it an optimal time for enjoying the city's iconic landscapes. Overall, the trend suggests that March is a month where sunshine begins to take center stage, setting the tone for the upcoming seasons.
As March unfolds in San Francisco, residents and visitors alike begin to revel in the increasing daylight hours, with the sun shining for an impressive 11 hours each day. This notable shift marks the gradual transition from the chill of winter toward the warmth of spring, following January's 9 hours and February's 10. The trend of extending daylight continues as the month progresses, leading seamlessly into April, which boasts an even brighter 13 hours. This upward trajectory not only enhances the vibrancy of the city but also reinvigorates outdoor activities, making March an alluring prelude to San Francisco’s sunnier months ahead.
As San Francisco transitions into March, the city experiences a gentle uptick in average wind speed, increasing to 4.1 m/s (9 mph), slightly above February's 4.0 m/s (9 mph). This trend signals the onset of spring, as the whiffs of warmer air become more noticeable. With a steady rise expected through April—reaching 4.6 m/s (10 mph)—and culminating in May's peak at 5.4 m/s (12 mph), the month's mild breezes blend harmoniously with blossoming scenery. The winds, known for their playful yet calming demeanor, usher in a lively atmosphere, inviting both residents and visitors to embrace the refreshing energy of San Francisco.
The weather in San Francisco 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 Francisco and find detailed weather information for every month.
In comparing the weather between January and March, it is notable that both months feature mild temperatures, with January displaying slightly cooler minimums and an average comparable to March. January has a minimum temperature of 3°C (38°F) and an average of 11°C (52°F), while March's minimum is a bit higher at 5°C (42°F) and an average of 12°C (53°F). Despite these similarities, January experiences more precipitation, totaling 106 mm (4.2 in) over 9 days, whereas March has 78 mm (3.1 in) across 10 days. Additionally, January tends to have a slightly higher humidity level of 85% compared to March's 82%. For more detailed information, check out San Francisco weather in January.
In comparing the weather between February and March, both months exhibit similar temperature ranges, with March having a minimum of 5°C (42°F) and an average of 12°C (53°F), while February features a slightly lower minimum of 4°C (39°F) and an average of 11°C (52°F). Interestingly, the maximum temperatures in both months peak at 20°C (69°F). However, March sees a decrease in precipitation, amounting to 78 mm (3.1 in) over 10 days, compared to February's higher total of 109 mm (4.3 in) across 9 days. Despite this difference in precipitation, both months maintain a consistent humidity level of 82%. For more detailed insights on February’s weather, you can check San Francisco weather in February.
In comparing the weather between March and April, we can see a noticeable shift in both temperature and precipitation. March typically experiences cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 20°C (69°F), while April offers a warmer range, with temperatures starting at a minimum of 7°C (44°F) and reaching up to 28°C (82°F). Additionally, April generally sees significantly less rainfall, recording only 35 mm (1.4 in) over 5 days, compared to March's 78 mm (3.1 in) spread across 10 days. Humidity levels remain relatively consistent, with March at 82% and April slightly lower at 79%. For more detailed information on weather patterns, you can check San Francisco weather in April.
In March, temperatures range from a minimum of 5°C (42°F) to a maximum of 20°C (69°F), with an average of 12°C (53°F). The month experiences higher precipitation levels at 78 mm (3.1 in) spread over 10 days, contributing to the relatively high humidity of 82%. In contrast, May offers milder conditions with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (75°F), averaging around 14°C (57°F). Precipitation drops significantly to just 20 mm (0.8 in) over only 2 days, while humidity remains slightly elevated at 83%. For more details on the weather during this month, you can check San Francisco weather in May.
March and June present notably different weather patterns. In March, temperatures range from a minimum of 5°C (42°F) to a maximum of 20°C (69°F), with an average of 12°C (53°F). The month sees a significant amount of precipitation, totaling 78 mm (3.1 in) over about 10 days, contributing to a humidity level of 82%. In contrast, June boasts warmer conditions, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 31°C (88°F), averaging 15°C (60°F). Rainfall is scarce, with only 3 mm (0.1 in) and no rainy days, resulting in a slightly higher humidity of 84%. For more detailed information, you can check out San Francisco weather in June.
March and July present contrasting weather patterns, with March experiencing cooler temperatures and more precipitation. In March, the temperatures range from a minimum of 5°C (42°F) to a maximum of 20°C (69°F), with an average of 12°C (53°F) and a significant 78 mm (3.1 in) of rainfall spread over 10 days, coupled with a humidity level of 82%. In contrast, July boasts milder conditions, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 24°C (76°F) and an average of 15°C (60°F). Notably, July is characterized by minimal rainfall, with only 3 mm (0.1 in) and no rainy days, though it has a slightly higher humidity level of 87%. For more details on July weather in San Francisco, check out San Francisco weather in July.
March and August present strikingly different weather conditions. In March, temperatures range from a minimum of 5°C (42°F) to a maximum of 20°C (69°F), with an average of 12°C (53°F). This month experiences significant precipitation, totaling 78 mm (3.1 in) over approximately 10 days, and a humidity level of 82%. In contrast, August is warmer, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 27°C (81°F) and an average of 16°C (61°F). Remarkably, August sees very little precipitation, only 2 mm (0.1 in), and boasts zero rainy days, along with a slightly higher humidity of 87%. For more detailed insights, you can check San Francisco weather in August.
In March, temperatures in San Francisco range from a minimum of 5°C (42°F) to a maximum of 20°C (69°F), with an average of 12°C (53°F). The month experiences significant precipitation, totaling 78 mm (3.1 in) over about 10 days, and the humidity sits at 82%. In contrast, September boasts warmer temperatures, with a minimum of 11°C (51°F) and a maximum that can reach up to 35°C (96°F), averaging 17°C (63°F). Notably, September sees very little rainfall, with just 2 mm (0.1 in) and virtually no rainy days, while humidity increases slightly to 86%. For more details on the weather in September, you can explore San Francisco weather in September.
March and October present distinct weather patterns, making each month unique. In March, temperatures range from a chilly 5°C (42°F) at night to a mild 20°C (69°F) during the day, with an average of 12°C (53°F). This month experiences a fair amount of precipitation, with about 78 mm (3.1 in) spread over 10 days and humidity levels at 82%. In contrast, October offers warmer conditions, with nighttime lows of 9°C (48°F) and daytime highs reaching 28°C (84°F), averaging around 16°C (60°F). It is also much drier, with only 30 mm (1.2 in) of rain over just 2 days, and a slightly lower humidity level of 80%. For more details on the specific weather conditions, you can check out San Francisco weather in October.
March and November present contrasting yet mild weather patterns. In March, temperatures range from a minimum of 5°C (42°F) to a maximum of 20°C (69°F), with an average of 12°C (53°F). This month experiences more rainfall, totaling 78 mm (3.1 in) over approximately 10 days, while humidity levels are higher at 82%. Conversely, November features slightly warmer temperatures, with a minimum of 6°C (43°F) and a maximum of 23°C (74°F), averaging 13°C (56°F). There is less precipitation in November, totaling 50 mm (2.0 in) spread over just 5 days, and humidity is slightly lower at 79%. For more detailed information, you can check San Francisco weather in November.
In comparing the weather between March and December, we see some notable similarities and differences. Both months experience a range of temperatures, with March averaging around 12°C (53°F) and December a slightly cooler 11°C (52°F), but both capable of reaching a maximum of 20°C (69°F). However, March tends to be a bit wetter, with 78 mm (3.1 in) of precipitation over about 10 days, compared to December's 95 mm (3.7 in) over 9 days. In terms of humidity, March has a slight edge at 82%, while December's humidity is at 79%. For those interested in a more detailed look at December weather specifically, you can check out San Francisco weather in December.
As March unfolds in San Francisco, the weather begins to transition gracefully from winter's chill to the more temperate spring atmosphere. While the city enjoys mild temperatures, with pleasant highs around 20°C (69°F), the average conditions hover at a comfortable 12°C (53°F), offering a crisp freshness in the air. Rainfall is not uncommon, with around 10 days of precipitation adding to the 82% humidity, making it a month where layers are both a necessity and a comfort. Compared to the colder months preceding it, March introduces a vibrant mix of sunny spells and refreshing showers, setting the stage for the warmer days ahead. For a deeper insight into the overall climate patterns, explore San Francisco Climate.