Last updated: March 17, 2025
July in Cardiff, United Kingdom, offers a delightful mix of warmth and occasional rain. With maximum temperatures reaching 28°C (82°F), the city experiences an average of 17°C (63°F), creating perfect conditions for outdoor activities. However, the month is not without its challenges, as 85 mm (3.3 in) of rain falls over approximately 12 days, keeping the air humid at around 70%. Whether basking in the sun or exploring indoor attractions, July presents a vibrant atmosphere in this charming capital.
In Cardiff, United Kingdom, July marks the peak of summer, bringing a delightful shift in temperatures that contrasts sharply with the chill of winter months. With minimums averaging around 9°C (48°F) and the average high reaching a pleasant 28°C (82°F), July offers a warm environment perfect for outdoor activities. This month typically sees a gracious average of 17°C (63°F), making Cardiff an inviting escape for those looking to bask in mild summer warmth. As the city transitions from the cooler spring months, it's a time when both locals and visitors can fully enjoy the vibrant atmosphere that the Welsh capital has to offer. With consistent warmth extending into August, July sets the stage for sun-filled days and lively evenings, enhancing Cardiff’s charm as a summer destination.
In July, Cardiff experiences a modest yet significant precipitation level, with 85 mm (3.3 in) of rain spread over 12 days. This figure remains consistent with the early summer trend observed in June, where rainfall measured 84 mm (3.3 in). As the city transitions into August, precipitation slightly increases to 97 mm (3.8 in) over 13 days, suggesting a shift towards the wetter conditions typical of late summer. Overall, July acts as a bridge, maintaining a balance between spring's freshness and the impending autumn deluge, which peaks in October with 135 mm (5.3 in) of rainfall over 16 days.
In July, Cardiff experiences a notable shift in humidity, dipping to 70%, making it one of the most comfortable months of the year. This decline follows a steady decrease from the winter months, where humidity levels are typically high, peaking at 88% in both January and February. As spring progresses, humidity gradually lowers to 80% in June, setting the stage for July's refreshing break. While summer continues into August with a slight rise to 73%, the trend clearly illustrates a seasonal pattern: as the year unfolds, Cardiff's humid climate gives way to a more pleasant atmosphere, allowing residents and visitors alike to enjoy outdoor activities amid the mild warmth.
In July, Cardiff experiences a UV Index of 8, categorizing exposure as very high, which means that sun protection is essential for most outdoor activities. With a burn time of just 15 minutes, residents and visitors should be particularly vigilant about sun safety during this peak summer month. This trend of increased UV levels continues from June, which also recorded a UV Index of 8, indicating a strong summer sun that can lead to skin damage in a short amount of time. As summer progresses, it's important for everyone to stay informed about the UV Index to enjoy the sunny days responsibly. For more detailed information, check out Cardiff UV Index.
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July shines brightly in Cardiff, offering an impressive 399 hours of sunshine that marks the zenith of the year. As summer unfolds, the city basks in a golden glow, following a steady ascent from the 81 hours seen in January. This surge in sunlight reaches its peak during July, showcasing the dramatic increase from previous months like June, which provided 355 hours. After this sun-drenched month, however, the days gradually shorten, with August seeing a promising 345 hours before the light wanes into the cooler seasons. The trend highlights not only the allure of Cardiff's summer but also the beautiful transition into autumn, creating a cycle of warmth and renewal that captivates both locals and visitors alike.
In July, the likelihood of sunny weather in Cardiff, United Kingdom, reaches 41%, showcasing a promising uptick compared to the preceding months. After a steady increase from the grey winter days, where chances hover around 21% in January and 23% in February, there is a notable shift as spring arrives, with April enjoying a brighter 52% of sunny days. While June offers a dip to 27%, July stands as a peak summer month, eclipsed only by the spring glory. This invigorating trend suggests that while Cardiff may not be the sunniest destination, July definitely brings a brighter disposition, perfect for outdoor gatherings and enjoying the season's warmth.
In Cardiff, United Kingdom, July brings the pinnacle of summer with an impressive 16 hours of daylight, matching the longest days of June. As the seasons progress, the increasing daylight from just 8 hours in January to July’s radiant glow highlights a steady upward trend. Following this peak, August experiences a gentle decline, with daylight tapering to 14 hours, signaling the gradual transition into autumn. This remarkable length of daylight during the height of summer not only encourages outdoor activities but also enhances the vibrant atmosphere of the city, making July a cherished time for residents and visitors alike.
In July, Cardiff experiences a gentle shift in its wind patterns, with an average wind speed of 3.4 m/s (8 mph). This marks a slight decrease from the more blustery months earlier in the year, particularly June, which recorded an average of 3.5 m/s (8 mph). As summer settles in, July brings warmer days and a sense of calm, with the wind softening noticeably compared to the gustier late autumn and early winter months, like November and December where speeds peak at 4.2 m/s (9 mph) and 5.3 m/s (12 mph), respectively. Overall, this trend suggests that while summer may present more subdued breezes, the shift in wind dynamics reflects the comforts of the season, inviting residents and visitors alike to enjoy the outdoors with a refreshing touch of Welsh air.
The weather in Cardiff changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July'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.
In July, the weather is typically much warmer and more pleasant, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 28°C (82°F) and an average of 17°C (63°F). Despite experiencing 12 days of precipitation, the overall humidity is around 70%. In contrast, January brings significantly colder conditions, with temperatures dipping to a minimum of -3°C (27°F) and peaking at just 13°C (56°F), culminating in an average of 6°C (42°F). January also sees a similar number of rainy days—12 in total—but with a higher humidity level of 88%. For more details on January weather, you can visit Cardiff weather in January.
When comparing the weather in July and February, the differences are quite striking. July enjoys a much warmer climate, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 28°C (82°F) and an average of 17°C (63°F). In contrast, February experiences much cooler temperatures, with a minimum of -4°C (26°F) and a maximum of 15°C (60°F), leading to an average of only 6°C (44°F).
Additionally, July sees a total precipitation of 85 mm (3.3 inches) spread over about 12 days, resulting in moderate humidity at 70%. February, however, is slightly wetter, with a total of 101 mm (4.0 inches) of precipitation over 14 days, accompanied by higher humidity levels at 88%. For more detailed information on the conditions during this month, you can check Cardiff weather in February.
July and March showcase distinctly different weather patterns. In July, temperatures range from a comfortable 9°C (48°F) at night to a warm 28°C (82°F) during the day, with an average of 17°C (63°F). With 85 mm (3.3 in) of precipitation spread over 12 days, July tends to be humid, averaging around 70%. In contrast, March starts with much cooler temperatures, dipping as low as -5°C (22°F) at night and reaching a maximum of 18°C (65°F) during the day, averaging 7°C (45°F). This month experiences slightly higher precipitation at 97 mm (3.8 in) over 15 days, accompanied by a higher humidity level of 86%. For more insights on the weather conditions during March, you can check Cardiff weather in March.
In comparing the weather between July and April, July boasts significantly warmer temperatures, with a minimum of 9°C (48°F) and an average of 17°C (63°F), peaking at 28°C (82°F). In contrast, April experiences much cooler conditions, starting with a minimum of -1°C (30°F) and averaging 9°C (49°F), with a maximum of 20°C (69°F). Additionally, July sees more precipitation, totaling 85 mm (3.3 in) over 12 days, compared to April's 57 mm (2.2 in) over 10 days. Notably, while July's humidity level is 70%, April is slightly higher at 84%. For a more detailed look at April's weather, you can visit Cardiff weather in April.
In comparison to May, July experiences warmer temperatures with a minimum of 9°C (48°F) and an average high of 28°C (82°F), while May's temperatures range from a minimum of 2°C (35°F) to a maximum of 24°C (76°F). Despite both months having approximately the same level of precipitation days, July sees slightly more rainfall, totaling 85 mm (3.3 in) compared to May's 79 mm (3.1 in). Additionally, while the humidity in July averages around 70%, May has slightly higher humidity at 80%. For a more detailed look at how temperatures and weather conditions differ, you can check Cardiff weather in May.
July generally experiences warmer temperatures compared to June, with average highs reaching 28°C (82°F) versus June's maximum of 27°C (82°F). However, July's minimum temperature is slightly higher at 9°C (48°F) compared to June's 7°C (45°F). Both months receive similar precipitation levels of around 85 mm (3.3 in) over 12 days, but humidity is lower in July at 70% compared to June's 80%. For more detailed information, you can check Cardiff weather in June.
In July, temperatures in Cardiff range from a minimum of 9°C (48°F) to a maximum of 28°C (82°F), with an average temperature of 17°C (63°F). The month sees about 85 mm (3.3 in) of precipitation over 12 days, with humidity levels around 70%. In comparison, August experiences slightly warmer conditions, with a similar minimum temperature but a higher maximum of 29°C (84°F) and an average temperature of 17°C (62°F). Precipitation increases to 97 mm (3.8 in) over 13 days, and humidity rises to 73%. For more details on the weather in August, you can check Cardiff weather in August.
July and September display notable differences in weather patterns. In July, temperatures range from a minimum of 9°C (48°F) to a pleasant average of 17°C (63°F), reaching a high of 28°C (82°F), making it the warmer month. In contrast, September sees cooler temperatures, with a minimum of 4°C (40°F) and an average of 15°C (59°F), while still reaching a maximum of 27°C (81°F). Both months experience similar precipitation levels, with July receiving 85 mm (3.3 in) and September slightly less at 81 mm (3.2 in), and both have rain on approximately 12 days. Additionally, September tends to be more humid at 79%, compared to July’s 70%. For more detailed information, you can check Cardiff weather in September.
In July, the weather is generally warmer, with temperatures ranging from a chilly 9°C (48°F) at night to a comfortable maximum of 28°C (82°F) during the day, alongside an average temperature of 17°C (63°F). This month experiences around 85 mm (3.3 in) of rainfall over about 12 days, with humidity levels sitting at 70%.
Conversely, October brings a significant drop in temperatures, with nighttime lows of 1°C (33°F) and average daytime highs reaching only 21°C (70°F). The average temperature settles around 12°C (54°F). Additionally, October is wetter, with precipitation totaling 135 mm (5.3 in) across about 16 days and increased humidity at 89%. For more details on what to expect, you can check this link: Cardiff weather in October.
July and November present significantly contrasting weather conditions. In July, temperatures range from a mild 9°C (48°F) at night to a warm 28°C (82°F) during the day, with an average of 17°C (63°F). The month sees about 85 mm (3.3 in) of precipitation, spread over 12 days, and a relatively comfortable humidity level of 70%. In stark contrast, November experiences much cooler temperatures, with nighttime lows plunging to -1°C (30°F) and daytime highs only reaching up to 16°C (61°F), averaging around 9°C (48°F). Precipitation increases to 99 mm (3.9 in) over 15 days, accompanied by a higher humidity of 90%. For more detailed information, refer to Cardiff weather in November.
July and December present strikingly contrasting weather conditions. In July, temperatures range from a mild 9°C (48°F) at night to a warm 28°C (82°F) during the day, with an average of 17°C (63°F). The month sees about 85 mm (3.3 in) of rainfall spread across 12 days, resulting in a relatively lower humidity of 70%. In contrast, December is much colder, with temperatures dipping as low as -4°C (26°F) and peaking at 13°C (56°F), averaging at 7°C (45°F). This month experiences higher precipitation, totaling 130 mm (5.1 in) over 17 days, along with increased humidity levels at 89%. For more details on December weather, visit Cardiff weather in December.
July in Cardiff offers a delightful departure from the cooler months, boasting warmer temperatures that average around 17°C (63°F), with highs reaching up to 28°C (82°F). This month stands out for its increased humidity, which often hovers around 70%, contributing to a balmy atmosphere perfect for summer activities. Despite the warmth, July experiences a moderate level of rainfall, with about 85 mm (3.3 in) spread across approximately 12 days. This blend of warmth and occasional showers creates a vibrant summer landscape, making it an ideal time to explore the charm of Cardiff. For more detailed insights into how July fits into the overall climate, visit Cardiff Climate.