March Weather in San Sebastian, Spain

Last updated: February 6, 2025

In March, San Sebastián experiences a diverse climate marked by mild temperatures and notable rainfall. With a maximum temperature reaching 22°C (71°F) and an average hovering around 10°C (51°F), the weather can shift dramatically, occasionally dipping to a chilly -1°C (30°F). This month sees about 124 mm (4.9 in) of precipitation spread over 17 days, contributing to a damp yet lush environment. Coupled with a humidity level of 82%, visitors should prepare for a mix of sunny spells and rainy moments, making March a unique time to explore the vibrant beauty of this coastal city.

March Temperature in San Sebastian

In March, San Sebastian starts to shake off the chill of winter, with temperatures reflecting the season's transition. The minimum temperature rests at a mild -1°C (30°F), while the average climbs to a comfortable 10°C (51°F). The upper end of the spectrum reaches a pleasant 22°C (71°F), matching the warmth of late summer in some regions. As winter's grasp loosens, March offers a blend of crisp mornings and sunny afternoons, inviting both locals and visitors to embrace the outdoors. This month marks a pivotal shift, paving the way for the sun-soaked days of April and May, making it an ideal time for exploring the picturesque landscapes and vibrant culture of this coastal gem.

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

The chart illustrates March temperature patterns in San Sebastian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454950535863666764595249
Data source: Temperature data for San Sebastian generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in San Sebastian

March in San Sebastián marks a transitional phase in the city’s weather pattern, with precipitation amounting to 124 mm (4.9 in) over 17 days. As the region begins to shake off the winter chill, this month still registers a significant volume of rain, though it shows a slight decline from the peaks of January and February. Notably, the increase in rainy days signals that early spring can be quite damp, hinting at the unpredictability of the Basque climate. This precipitation trend lays the groundwork for the lush greenery that characterizes the region as it moves into the warmer months, making March a critical period for both the environment and local agriculture.

March Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec147130124108120135939597135190217
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in San Sebastian

March marks a notable shift in San Sebastian's humidity, with levels dipping to 82%, a gradual decrease from January's 86% and February's 85%. This decline reflects the arrival of spring, as the city transitions towards warmer months. Throughout the year, humidity tends to lower consistently from March through August, reaching its annual low of 76% in August before gradually rising again as autumn approaches. Such patterns suggest a refreshing change in the air, inviting residents and visitors alike to enjoy the blooming landscapes and vibrant outdoor activities that define San Sebastian during this time of year.

March Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%83%81%80%81%80%76%75%81%85%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in San Sebastian

As March arrives in San Sebastian, Spain, the UV Index climbs to 6, categorizing it as high and signaling a shift in sun exposure. Compared to the previous months, the increase from a moderate UV Index of 4 in February to 6 this month highlights the arrival of spring sunlight and the need for vigilance against UV radiation. With a burn time of just 25 minutes, it’s essential to prioritize sun protection during outdoor activities. As we look forward to April, when the UV Index further intensifies to 7, it's clear that the trend towards stronger sunlight is on the horizon. For more insights on UV levels throughout the year, visit San Sebastian UV Index.

Maximum UV Index Levels in San Sebastian for March

The chart shows the monthly maximum UV Index (UVI) for San Sebastian 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.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: San Sebastian 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 Sebastian

As winter fades away, March welcomes a radiant transformation in San Sebastián, with sunshine hours skyrocketing to 305 hours—an impressive leap from the 240 hours in February. This marked increase not only signals the arrival of spring but also sets the stage for the warmer months ahead. The trend continues, with April seeing even more sun, averaging 333 hours, and May shining the brightest with 369 hours. This gradual ascent reflects a clear pattern of growing daylight that invigorates the coastal city, inviting both locals and visitors to bask in its beauty. Each month enhances the allure of San Sebastián, making the journey into summer an unforgettable experience full of sun-soaked adventures.

Monthly Sunshine Duration in San Sebastian: March Highlighted

The March sunshine duration represents the total number of hours San Sebastian 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.
JanFebMarAprMayJunJulAugSepOctNovDec170h240h305h333h369h380h403h385h335h293h230h212h
Data source: San Sebastian March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Sebastian During March

As March rolls in, San Sebastian begins to shake off the winter gloom, showing a notable 43% chance of sunny weather—a significant leap compared to the 21% observed in January and February. This uptick marks the start of a more promising season, with the likelihood of sunny days peaking ahead of the slightly lower percentages in April and May. Interestingly, while summer months like June and July hover around the 28-34% range, March emerges as a delightful transition month, offering an invigorating blend of milder temperatures and longer days. This makes it an ideal time for visitors to enjoy the city's stunning landscapes and rich culture under the warmth of the sun.

Percentage of Sunny Days in March in San Sebastian

The chart illustrates the percentage of sunny days in San Sebastian 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 Sebastian experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%21%43%38%29%28%34%37%28%38%17%34%
Data source: San Sebastian March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Sebastian in March

As March unfolds in San Sebastian, the city begins to bask in an inviting increase in daylight, with the duration extending to 11 hours—a delightful leap from the 10 hours seen in February. This gradual lengthening of days not only signals the arrival of spring, but also hints at the vibrant energy that the season brings. March marks a turning point, where daylight hours begin to increase more noticeably each month, paving the way for the longer days of April and May. This trend highlights a gradual transition in the landscape and lifestyle of San Sebastian, with each additional hour of sunlight inviting both locals and visitors to explore and enjoy the scenic beauty of the region as it awakens from winter's embrace.

Average Daylight Hours in San Sebastian for March

The chart illustrates the variation in daylight duration in San Sebastian throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 22m10h 30m11h 57m13h 26m14h 41m15h 19m14h 59m13h 52m12h 27m10h 58m9h 41m9h 1m
Data source: San Sebastian daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in San Sebastian

In March, San Sebastián experiences a gentle easing in wind conditions, with an average wind speed of 3.6 m/s (8 mph), slightly calmer than the preceding months. This shift marks a transition from the brisker breezes of winter, where January and February boasted higher averages of 4.0 m/s (9 mph) and 4.7 m/s (10 mph), respectively. As spring approaches, the winds continue to soften, setting the stage for warmer months ahead; by April, the average dips to just 3.5 m/s (8 mph). This consistent decline hints at the idyllic coastal atmosphere that characterizes San Sebastián as it sheds its winter chill and welcomes visitors eager to enjoy the beauty of its beaches and vibrant streets.

Average March Wind Speed in San Sebastian

The chart displays monthly wind speed patterns in San Sebastian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.73.6 m/s3.53.02.92.82.62.73.23.74.7
Data source: San Sebastian March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in San Sebastian Compares to Other Months

The weather in San Sebastian 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 Sebastian and find detailed weather information for every month.

In comparing the weather between March and January, we notice that March tends to be slightly warmer, with average temperatures reaching 10°C (51°F) compared to January's average of 7°C (45°F). March also offers higher maximum temperatures, peaking at 22°C (71°F), while January's maximum is 18°C (65°F). However, January experiences more significant precipitation, totaling 147 mm (5.8 in) over 14 days, compared to March’s 124 mm (4.9 in) spread over 17 days, making both months relatively wet but January slightly wetter. Additionally, the humidity levels are higher in January at 86%, compared to March's 82%. For more detailed information, you can check San Sebastian weather in January.

In comparison to February, March typically showcases a slight increase in average temperatures, rising from 9°C (49°F) in February to 10°C (51°F). Both months experience similar maximum temperatures, with March peaking at 22°C (71°F), just like February. However, February sees lower minimum temperatures with lows of -4°C (25°F) compared to March's -1°C (30°F). Precipitation levels are relatively close, with March receiving 124 mm (4.9 in) over 17 days, while February records 130 mm (5.1 in) across 13 days. Humidity is slightly lower in March at 82%, compared to 85% in February, making March feel a bit more comfortable overall. For a detailed look at February's weather, you can visit San Sebastian weather in February.

March and April exhibit a notable transition in weather patterns. In March, temperatures range from a low of -1°C (30°F) to a maximum of 22°C (71°F), with an average of 10°C (51°F). The month sees significant precipitation, totaling 124 mm (4.9 in) over 17 days, accompanied by an average humidity of 82%. In contrast, April brings slightly warmer temperatures, with a minimum of 1°C (34°F), an average of 12°C (54°F), and a maximum of 23°C (74°F). Rainfall decreases to 108 mm (4.3 in) over 14 days, with humidity dipping slightly to 81%. This gradual warming and reduction in precipitation marks a shift towards more pleasant spring weather. For more details, you can visit San Sebastian weather in April.

In March, the weather tends to be cooler, with average temperatures ranging from a minimum of -1°C (30°F) to a maximum of 22°C (71°F). The month also experiences considerable precipitation, with around 124 mm (4.9 in) accumulated over 17 rainy days and humidity levels at 82%. In contrast, May offers a noticeable warming trend, featuring an average temperature ranging from a minimum of 4°C (39°F) to a maximum of 27°C (80°F). Precipitation decreases slightly to 120 mm (4.7 in) over the same number of rainy days, while humidity remains relatively stable at 80%. This transition highlights a shift towards milder and more pleasant conditions as spring progresses. For detailed insights into May's climate, you can refer to San Sebastian weather in May.

In March, the weather features a wide range of temperatures, with minimums dipping to -1°C (30°F) and highs reaching up to 22°C (71°F). The month is marked by significant precipitation, totaling 124 mm (4.9 in) over 17 days, and high humidity at 82%. In contrast, June brings warmer conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 32°C (90°F), showcasing an average of 17°C (63°F). Although June experiences slightly more precipitation at 135 mm (5.3 in) over 15 days, the humidity levels are comparable at 81%. For a detailed look at what to expect, check out San Sebastian weather in June.

In March, the weather is considerably cooler, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 22°C (71°F), averaging around 10°C (51°F). The month sees higher precipitation, totaling 124 mm (4.9 in) over approximately 17 days, along with a humidity level of 82%. In contrast, July offers a much warmer climate, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 33°C (91°F) and an average temperature of 19°C (67°F). With a total precipitation of 93 mm (3.7 in) spread over 14 days and slightly lower humidity at 80%, July provides a more pleasant and drier experience. For more detailed information, you can check San Sebastian weather in July.

March and August present distinct weather contrasts. In March, temperatures range from a chilly -1°C (30°F) at night to a mild 22°C (71°F) during the day, with an average temperature of 10°C (51°F). The month is characterized by higher precipitation, totaling 124 mm (4.9 in) over 17 days, accompanied by a humidity level of 82%. In contrast, August offers a much warmer climate, with minimum temperatures of 12°C (53°F) and maximums reaching 31°C (88°F), averaging around 20°C (67°F). Precipitation decreases to 95 mm (3.7 in) across 15 days, with a lower humidity of 76%. For a detailed look at August's weather, visit San Sebastian weather in August.

March and September present quite contrasting weather conditions. In March, temperatures can drop to a chilly -1°C (30°F), with an average of 10°C (51°F) and a maximum of 22°C (71°F). The month is also characterized by significant precipitation, averaging 124 mm (4.9 in) over 17 days and relatively high humidity at 82%. In contrast, September enjoys milder temperatures, with lows around 9°C (48°F) and highs reaching 29°C (85°F), resulting in an average of 18°C (65°F). The amount of rainfall is also less, at 97 mm (3.8 in) spread over just 12 days, accompanied by lower humidity levels at 75%. For more detailed insights on September weather, check out San Sebastian weather in September.

March and October present quite different weather patterns. In March, temperatures can dip to a chillier minimum of -1°C (30°F), with an average of 10°C (51°F) and a maximum reaching 22°C (71°F). The month is marked by significant rainfall, with about 124 mm (4.9 in) of precipitation over 17 days, and humidity levels hovering around 82%. In contrast, October enjoys milder temperatures, with a minimum of 5°C (41°F) and an average of 15°C (59°F), peaking at 26°C (79°F). This month experiences slightly more rainfall, totaling 135 mm (5.3 in) across 14 days, but maintains a lower humidity level at 81%. For a closer look at what to expect, check out San Sebastian weather in October.

In March, temperatures in the region typically range from a minimum of -1°C (30°F) to a maximum of 22°C (71°F), with an average temperature of 10°C (51°F). March experiences about 124 mm (4.9 in) of precipitation across 17 days, and humidity averages around 82%. In contrast, November’s weather features slightly milder temperatures, with a minimum of 2°C (36°F) and an average of 11°C (52°F), peaking at a comfortable 22°C (72°F). Precipitation significantly increases to 190 mm (7.5 in) over 18 days, accompanied by a higher humidity level of 85%. For more details on the weather conditions you can expect in November, you can visit San Sebastian weather in November.

In March, temperatures begin to rise, with averages around 10°C (51°F) and maximums reaching up to 22°C (71°F), while precipitation levels are relatively moderate at 124 mm (4.9 in) over 17 days with a humidity of 82%. In contrast, December sees cooler temperatures, averaging 9°C (49°F) and peaking at 18°C (64°F), but experiences significantly higher rainfall at 217 mm (8.5 in) across the same number of days, along with increased humidity levels at 87%. For a more in-depth look at December weather, you can check out San Sebastian weather in December.

Compare San Sebastian's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in San Sebastian

In March, San Sebastian begins to shake off the winter chill, presenting a delightful transition with milder temperatures that invite outdoor explorations. The average temperature rises significantly compared to the colder winter months, though occasional chilly days remind visitors of the season's lingering grasp. However, with significant rainfall—often sweeping through nearly half of the month—it's wise to keep an umbrella handy. The high humidity also adds to the freshness in the air, giving the city its vibrant charm. This period marks a promising shift towards spring, perfect for enjoying the picturesque landscapes. For a deeper dive into what to expect throughout the year, check out the detailed information at San Sebastian Climate.