Last updated: March 17, 2025
March in Cardiff, United Kingdom, presents a dynamic blend of weather conditions as winter transitions into spring. Temperatures range from a minimum of -5°C (22°F) to a maximum of 18°C (65°F), with an average temperature of 7°C (45°F) providing a brisk but invigorating atmosphere. Expect frequent rainfall, with 97 mm (3.8 in) of precipitation spread over 15 days, resulting in an average humidity of 86%. As the days grow longer and the landscape begins to blossom, this month offers a refreshing yet often damp experience, perfect for those who enjoy nature's awakening.
In March, Cardiff begins to shake off the chill of winter, with temperatures making a noticeable shift. The month typically registers a minimum of -5°C (22°F), while daytime averages rise to around 7°C (45°F), peaking at a pleasant 18°C (65°F). This gradual warming trend signals the onset of spring, as the city transitions from the frigid depths of January and February. With each passing week, you can expect increasing sunlight and milder conditions, making March an ideal time for outdoor exploration and enjoying the blossoming scenery. The promise of warmer days ahead adds to the city's charm, inviting both locals and visitors to relish the refreshing change in weather.
In March, Cardiff experiences a notable shift in precipitation patterns, with a recorded 97 mm (3.8 in) of rainfall over 15 days. This amount reflects a decrease from the wetter months of January and February, yet still maintains significant moisture levels as spring approaches. The transition from February's 101 mm (4.0 in) showcases how March serves as a bridge between the heavy winter rains and the drier conditions of April, which typically averages just 57 mm (2.2 in). As the petals of spring bloom, the consistent rain in March helps to nurture the vibrant landscapes of Cardiff, even as it signals the start of a gradual reduction in precipitation leading into the sunnier days of late spring and summer.
In March, Cardiff experiences a slight dip in humidity, with levels around 86%, a subtle decrease from the 88% recorded in the preceding months of January and February. This seasonal transition marks the beginning of a gradual decline in humidity as spring approaches, leading into April's average of 84% and May's further drop to 80%. The overall trend showcases a shift from the higher, more humid winter months, paving the way for drier conditions as summer arrives. Cardiff's weather exemplifies the typical shift of urban climates, where humidity gradually lessens, offering a refreshing change for inhabitants and visitors alike.
As March rolls into Cardiff, residents can expect a noticeable shift in UV exposure with the UV Index reaching 4, indicating a moderate level of sun intensity. This is a step up from the previous months, where the UV Index lingered at lower levels of 1 and 2, allowing for a more relaxed attitude toward sun safety. With a burn time of just 30 minutes, it's essential to start taking precautions, especially during mid-day hours. This trend foreshadows even stronger UV levels in the coming months, peaking in June and July. As spring unfolds, stay informed and prepared for increased sun exposure by checking the Cardiff UV Index for real-time updates.
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March in Cardiff sees a notable surge in sunshine, basking in 192 hours of bright, cheerful light as winter gives way to spring. This increase marks a significant transition from the 134 hours recorded in February, heralding the arrival of longer, sunnier days. As the month unfolds, residents can savor the gentle warmth and burgeoning blossoms, paving the way for even brighter April experiences, which jump to 303 hours. This upward trend not only signals the end of the gray winter months but also invites outdoor activities and a renewed appreciation for nature. March truly acts as that delightful bridge, bringing a growing sense of optimism and vitality to the vibrant city of Cardiff.
As March approaches in Cardiff, the probability of basking in sunny skies begins to rise, with a likelihood of 29% compared to the colder months. This gradual increase from January's mere 21% and February's 23% marks a transition toward spring, hinting at longer days and brighter weather. While April sees a significant leap to 52%, March serves as a precursor, suggesting that the gloom of winter is giving way to a more cheerful climate. This trend illustrates not just a numerical increase, but also an optimistic shift in the overall atmosphere as residents and visitors alike look forward to sunnier days ahead.
As winter gives way to spring, March in Cardiff brings a noticeable increase in daylight, with the hours stretching to an inviting 11 hours. This marks a significant leap from February's 9 hours, signaling the awakening of longer days and brighter evenings. The gradual transition continues into April and May, where daylight durations increase further to 13 and 15 hours respectively, showcasing the rhythm of the changing seasons. This uplifting trend promises both invigorating sunlight and opportunities for outdoor activities, as the city shakes off the winter chill and embraces the lush possibilities of spring.
As March unfolds in Cardiff, the average wind speed dips to 4.8 m/s (11 mph), a slight decrease from February’s breezier 5.7 m/s (13 mph). This trend signifies a gradual easing of the winds as winter gives way to spring, creating a calmer atmosphere just ahead of the warming months. While the wind may still make an occasional statement, it tends to soften in comparison to the preceding months, with April bringing even more tranquility at 3.7 m/s (8 mph). Interestingly, March’s breezy nature serves as a precursor to the upcoming seasonal shifts, marking the transition from winter’s chill to the gentle embrace of spring, ultimately enhancing Cardiff's charm.
The weather in Cardiff 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 Cardiff and find detailed weather information for every month.
When comparing the weather in March to that in January, we notice notable differences in temperature and precipitation patterns. March typically experiences a broader temperature range, with average highs reaching 18°C (65°F) compared to January's maximum of 13°C (56°F). While January has slightly higher minimum temperatures, March's average of 7°C (45°F) suggests a transition towards spring. Additionally, March sees more precipitation overall, with 97 mm (3.8 in) falling over 15 days, compared to January's 75 mm (3.0 in) across 12 days. The humidity levels are also quite similar, though slightly higher in January at 88%, compared to March's 86%. For more detailed insights into January’s weather specifically, you can check this link: Cardiff weather in January.
In comparing the weather between February and March, we see a slight increase in average temperatures, with March averaging 7°C (45°F) compared to February's 6°C (44°F). While February recorded a minimum temperature of -4°C (26°F) and a maximum of 15°C (60°F), March's temperatures ranged from -5°C (22°F) to a warmer maximum of 18°C (65°F). Precipitation levels are quite similar, with February experiencing 101 mm (4.0 in) over 14 days, slightly more than March's 97 mm (3.8 in) across 15 days. Humidity remains comparable, with February at 88% and March at 86%. For more details on February's conditions, you can explore Cardiff weather in February.
March typically experiences a wider range of temperatures, with a minimum of -5°C (22°F) and a maximum of 18°C (65°F), leading to an average of 7°C (45°F). This month is also marked by higher precipitation, averaging 97 mm (3.8 in) over 15 days and maintaining a humidity of 86%. In contrast, April offers a milder experience, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 20°C (69°F), resulting in an average of 9°C (49°F). Additionally, April sees a decrease in precipitation, averaging 57 mm (2.2 in) over 10 days, and slightly lower humidity at 84%. For more detailed insights, you can check Cardiff weather in April.
March and May present notably different weather patterns. In March, temperatures range from a chilly minimum of -5°C (22°F) to a maximum of 18°C (65°F), with an average of 7°C (45°F). The month experiences a significant amount of precipitation at 97 mm (3.8 in) over 15 days, coupled with a high humidity level of 86%. In contrast, May offers a more temperate climate, with minimum temperatures of 2°C (35°F) and maximums soaring to 24°C (76°F), resulting in an average temperature of 12°C (54°F). Precipitation in May is lower at 79 mm (3.1 in) over 12 days, and humidity is also somewhat reduced at 80%. For a detailed look at May weather specifics, check Cardiff weather in May.
In March, temperatures can be quite chilly, ranging from a minimum of -5°C (22°F) to a maximum of 18°C (65°F), with an average of 7°C (45°F). The month sees significant precipitation, averaging 97 mm (3.8 in) over 15 days, coupled with a high humidity level of 86%. In contrast, June offers much milder weather, with temperatures starting at a minimum of 7°C (45°F) and peaking at 27°C (82°F), leading to a comfortable average of 15°C (60°F). Rainfall decreases to 84 mm (3.3 in) spread over 12 days, and humidity levels drop slightly to 80%. For more details, check out Cardiff weather in June.
March and July present contrasting weather conditions. In March, temperatures range from a chilly -5°C (22°F) at night to a mild 18°C (65°F) during the day, with an average of 7°C (45°F). The month sees significant precipitation, with 97 mm (3.8 in) falling over 15 days, leading to a high humidity level of 86%. In contrast, July warms up considerably, featuring minimum temperatures of 9°C (48°F) and maximum temperatures reaching 28°C (82°F), averaging 17°C (63°F). The summer month experiences less rainfall, totaling 85 mm (3.3 in) over just 12 days, and lower humidity at 70%. For more details, check out Cardiff weather in July.
March typically brings cooler temperatures, with a range from a chilly -5°C (22°F) to a mild 18°C (65°F) and an average of around 7°C (45°F). The month is characterized by high humidity at 86% and frequent precipitation, occurring on about 15 days, resulting in a total of 97 mm (3.8 in) of rain.
In contrast, August features warmer weather, with temperatures varying from a comfortable 9°C (48°F) to a warm 29°C (84°F) and an average of 17°C (62°F). Although it also sees 97 mm (3.8 in) of precipitation, it is spread over just 13 days, and the humidity is notably lower at 73%. For more details on summer weather, you can check Cardiff weather in August.
March and September present quite contrasting weather patterns. In March, temperatures range from a chilly minimum of -5°C (22°F) to a mild maximum of 18°C (65°F), with an average of 7°C (45°F). The month experiences significant rainfall, totaling 97 mm (3.8 in) across about 15 days, coupled with high humidity at 86%. In contrast, September offers a considerably warmer climate, with temperatures starting at a minimum of 4°C (40°F) and peaking at 27°C (81°F), averaging 15°C (59°F). The precipitation decreases to 81 mm (3.2 in) over 12 days, and humidity lowers to 79%. This shift from the cold and wet conditions of March to the warmer and drier feel of September highlights the transition of seasons. For more detailed information, check Cardiff weather in September.
March and October present distinctly different weather patterns. In March, temperatures range from a chilly -5°C (22°F) at night to a mild 18°C (65°F) during the day, with an average temperature around 7°C (45°F). The month experiences significant precipitation, with 97 mm (3.8 in) falling over 15 days and humidity levels are relatively high at 86%. In contrast, October sees slightly milder temperatures, with a minimum of 1°C (33°F) and a maximum of 21°C (70°F), leading to an average of 12°C (54°F). This month is wetter overall, accumulating 135 mm (5.3 in) of precipitation over 16 days and slightly higher humidity at 89%. For a more detailed look at what to expect, you can check Cardiff weather in October.
March and November in Cardiff share some similarities in terms of temperature and precipitation, yet they also showcase distinct characteristics. In March, the average temperature ranges from a chilly -5°C (22°F) at night to a mild 18°C (65°F) during the day, while November experiences slightly warmer temperatures, with a minimum of -1°C (30°F) and a maximum of 16°C (61°F). Both months have comparable precipitation levels, with March receiving 97 mm (3.8 in) and November at 99 mm (3.9 in), each spread over 15 days. However, November tends to be a bit more humid, with humidity levels at 90% compared to March's 86%. For more insights on the November climate in Cardiff, check out Cardiff weather in November.
In comparing the weather in March and December, both months experience similar average temperatures around 7°C (45°F), but December tends to be slightly cooler with a maximum of 13°C (56°F) compared to March's high of 18°C (65°F). March sees a total precipitation of 97 mm (3.8 in) over about 15 days, while December is wetter, with 130 mm (5.1 in) of rain spread across 17 days. Humidity levels are also comparable, with March at 86% and December slightly higher at 89%. For more details on December conditions, you can explore Cardiff weather in December.
As March unfolds in Cardiff, the weather begins its transition from winter's chill towards the promise of spring. With temperatures gradually climbing from an average of 7°C to a maximum of 18°C, the month offers a refreshing taste of warmth, albeit often accompanied by a significant 86% humidity and nearly 15 days of precipitation. This makes March notably wetter compared to the drier summer months, challenging the onset of outdoor activities. While the brisk air still holds traces of winter—evident in the occasional dip to -5°C—the increasing daylight and milder conditions hint at the vibrant spring that lies ahead. For a deeper dive into the climate specifics that shape Cardiff’s weather throughout the year, explore Cardiff Climate.