Last updated: March 17, 2025
July in London, United Kingdom, offers a dynamic blend of weather experiences. With maximum temperatures soaring up to 36°C (96°F), the month can bring unexpected heat waves, while the average temperature rests at a comfortable 18°C (65°F). Evenings can cool down to a refreshing 9°C (49°F), providing a delightful contrast. The city sees an average precipitation of 64 mm (2.5 in) across approximately 11 days, creating a humid ambiance with levels around 71%. Whether basking in the sun or enjoying the occasional summer rain, July in London promises both vibrant outdoor activities and cozy indoor retreats.
In July, London experiences a warm embrace, with temperatures showing a marked increase as summer peaks. The month begins with a minimum of 9°C (49°F), but quickly rises to an impressive maximum of 36°C (96°F), creating an inviting atmosphere for both locals and tourists alike. The average temperature settles at a comfortable 18°C (65°F), making it the ideal time to explore the city’s vibrant parks and outdoor events. This upward trend from the cooler spring months highlights July as a standout in London’s climate, offering sun-drenched days perfect for enjoying the rich culture and lively street life that the city is known for.
In July, London experiences an average precipitation of 64 mm (2.5 in) over approximately 11 days, marking a shift from the wetter June months, which saw 77 mm (3.0 in). While July's rainfall is slightly above the drier spell of April, it still showcases a moderate summer pattern, suggesting that Londoners should keep their umbrellas handy. As the city transitions into August, where average precipitation increases to 70 mm (2.7 in) across 12 days, the overall trend indicates a persistence of summer showers amid longer spells of sunshine, creating a classic blend of British summer weather.
In July, London experiences a significant dip in humidity, dropping to 71%, which is notably lower than the preceding months. This decrease marks the peak of summer, providing a brief respite from the intense moisture that characterizes the early months of the year, where humidity levels hover above 85%. As spring transitions into summer, humidity begins to decline, with June still holding a relatively high 80%. Following July, humidity starts to gradually rise again, reaching 76% in August as autumn approaches. This pattern illustrates London’s seasonal shift, with July standing out as the month of comparative dryness amidst an otherwise humid climate.
In July, London experiences a UV Index of 8, categorized as very high, which means sun exposure can be intense, with a burn time as short as 15 minutes. This trend of elevated UV levels continues from June, highlighting the peak of summer's warmth and sunlight. As the month progresses, residents and visitors should be vigilant against sunburn, especially since the UV Index will gradually decrease in August, dropping to a high of 7. Early summer months like May also see significant increases, with a high exposure category that starts to set the tone for the sunnier days ahead. For comprehensive details on sun safety and UV trends, visit London UV Index.
UV Risk Categories
July shines as the pinnacle of sunlight in London, boasting 404 hours of radiant days that surpass all other months. Following a steady ascent from the low light of January's 98 hours, the city's sunshine hours soar throughout the spring and early summer, peaking in July before gradually tapering off in August to 368 hours. This trend reveals a clear transition from winter’s scarcity to the glorious abundance of summer, with blissful daylight marking the mid-year. As residents bask in the warmth, they relish the long, sun-drenched days that define London’s vibrant July, setting a splendid backdrop for outdoor adventures and leisurely gatherings.
July in London offers a promising chance of sunny spells, with a 38% likelihood of sunshine illuminating the city's vibrant parks and historic landmarks. This marks a notable increase from the cloudier months preceding it—April's 49% and June's 28% showcase the shifting patterns toward summer warmth. Although July's sun probability is not the highest, it stands out against the more muted expectations of August at 25%. Thus, while hot summer days may not be a given, July presents a unique window to enjoy London basking in the sun, making it an ideal time for outdoor adventures and leisurely strolls through the city's scenic streets.
In July, London basks in an impressive 16 hours of daylight, tying with June for the longest days of the year. This peak illuminates vibrant parks and bustling streets, inviting both locals and tourists to seize the sun-soaked days. As the year progresses, daylight gradually wanes, dropping to 14 hours in August and further to 12 hours in September. This noticeable decline signals the transition from the bright summer months into the softer hues of autumn, illustrating a rhythmic ebb and flow of light that characterizes London’s seasonal rhythm. Enjoying the long days of July is a fleeting pleasure, but it sets the stage for the changing tapestry of daylight that follows.
In July, London experiences a slight uptick in average wind speed, reaching 3.3 m/s (7 mph). This subtle increase follows a notably calm June, where winds dropped to 3.1 m/s (7 mph), making July feel a bit breezier yet still mild. Ultimately, the summer months showcase a gentle breeze, with July's winds aligned closely with the patterns observed in August and September, suggesting a consistent lightness in the air as London enjoys its warmer days. With both July and June reflecting lower wind speeds relative to the spring, it’s clear that the summer season often brings a tranquil atmosphere to the capital, perfect for leisurely strolls along the Thames or relaxing in its vibrant parks.
The weather in London 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 London and find detailed weather information for every month.
July and January present remarkably contrasting weather patterns. In July, temperatures range from a refreshing 9°C (49°F) at night to a sweltering peak of 36°C (96°F) during the day, with an average of 18°C (65°F). The month typically sees about 64 mm (2.5 in) of precipitation over 11 days, accompanied by a comfortable humidity level of 71%. In contrast, January showcases a much colder climate, with temperatures dipping as low as -5°C (24°F) and averaging only 5°C (41°F), reaching a maximum of 14°C (58°F). It experiences slightly less precipitation at 54 mm (2.1 in) over 10 days, but the humidity is notably higher at 91%. For more insights into January's weather, check out London weather in January.
July and February present striking contrasts in weather conditions. In July, temperatures range from a minimum of 9°C (49°F) to a scorching maximum of 36°C (96°F), with an average of 18°C (65°F), making it a much warmer month. However, it does experience some rainfall, with about 64 mm (2.5 in) of precipitation over 11 days and a humidity level of 71%. In contrast, February is significantly cooler, showcasing temperatures that dip as low as -5°C (23°F) and peak at 18°C (65°F), with an average of just 6°C (43°F). Despite receiving slightly less precipitation at 53 mm (2.1 in) over the same number of days, February's humidity is higher at 89%, contributing to a damp and chilly atmosphere. For more details, visit London weather in February.
In comparing the weather of July and March, a stark contrast emerges. July experiences much warmer temperatures, with a minimum of 9°C (49°F) and a maximum reaching up to 36°C (96°F), averaging around 18°C (65°F). In contrast, March is considerably cooler, with temperatures ranging from a chilly -5°C (23°F) to a mild 22°C (71°F), and an average of just 7°C (46°F). While July sees 64 mm (2.5 in) of precipitation over 11 days and a humidity level of 71%, March has slightly less precipitation at 54 mm (2.1 in) spread over 13 days, but a higher humidity of 86%. For a closer look at the specifics of March weather, you can check London weather in March.
When comparing the weather in July and April, it's clear that July offers a significantly warmer climate, with average temperatures reaching 18°C (65°F) and maximums soaring up to 36°C (96°F). In contrast, April's temperatures range from a chilly -2°C (29°F) to a pleasant 26°C (80°F), making it cooler overall. Precipitation levels are higher in July, with 64 mm (2.5 in) of rainfall over 11 days, while April sees less rain at 33 mm (1.3 in) over 8 days. Additionally, humidity levels in April are higher at 85%, compared to 71% in July, contributing to a different feel in the air during these months. For a more detailed look at the weather, you can visit London weather in April.
July and May showcase notable differences in weather patterns. July features a broader temperature range, with minimums of 9°C (49°F) and maximums soaring to 36°C (96°F), averaging around 18°C (65°F). In contrast, May experiences milder temperatures, with a minimum of 1°C (35°F) and a maximum of 25°C (78°F), averaging 13°C (55°F). Both months see similar precipitation levels, around 64 mm (2.5 in) over 11 days; however, July's humidity is slightly lower at 71% compared to May's 79%. For more detailed information, you can check London weather in May.
In comparing the weather between June and July, we see a notable increase in both temperature and humidity levels. July boasts a range from a minimum of 9°C (49°F) to a maximum of 36°C (96°F), with an average temperature of 18°C (65°F), while June has slightly lower temperatures, ranging from 7°C (45°F) to 31°C (89°F) and averaging 16°C (62°F). Precipitation in July is slightly lower at 64 mm (2.5 in) over 11 days, compared to June's 77 mm (3.0 in) over 9 days, indicating that July may feature slightly wetter conditions despite being warmer. Additionally, the humidity in July is 71%, which is lower than June’s 80%, suggesting that while July is hotter, it may feel less muggy than June. For more detailed information, check out London weather in June.
In comparing the weather between July and August, both months exhibit similar average temperatures, hovering around 18°C (65°F), but July tends to be slightly warmer with maximum temperatures reaching up to 36°C (96°F) compared to August’s high of 34°C (93°F). Precipitation levels are relatively close, with July receiving 64 mm (2.5 in) over about 11 days, while August sees a slight increase in precipitation to 70 mm (2.7 in) across 12 days. Additionally, humidity levels rise in August to 76%, up from July's 71%, making August feel a bit more humid overall. For a more detailed look at the weather during this month, you can check London weather in August.
In comparing the weather between July and September, July is characterized by warmer temperatures, with minimums around 9°C (49°F) and maximums soaring up to 36°C (96°F), while September sees cooler temperatures, ranging from a low of 4°C (39°F) to a high of 28°C (83°F). Precipitation is slightly lower in September, totaling 45 mm (1.8 in) over about 10 days, compared to July's 64 mm (2.5 in) spread across 11 days, making the earlier month a bit wetter overall. Additionally, humidity levels are higher in September at 82%, compared to July's 71%, contributing to a more muggy feeling as the year transitions into autumn. For more detailed insights, you can check out London weather in September.
July and October present quite contrasting weather patterns. In July, temperatures range from a minimum of 9°C (49°F) to a maximum of 36°C (96°F), with an average of 18°C (65°F), making it the warmest month of the year. Although July experiences considerable warmth, it also sees 64 mm (2.5 in) of precipitation over 11 days, and humidity levels hover around 71%.
In stark contrast, October's weather is significantly cooler, featuring temperatures that range from a chilly 1°C (34°F) to a comfortable 22°C (73°F), with an average of 12°C (54°F). October is also wetter, with a total precipitation of 84 mm (3.3 in) spread over 12 days and higher humidity at 90%. For more details on London weather in October, be sure to check the provided link.
July and November present stark contrasts in weather patterns. July experiences a wide range of temperatures, with a minimum of 9°C (49°F) and a maximum of 36°C (96°F), leading to an average of 18°C (65°F). This month also boasts higher humidity levels at 71% and receives around 64 mm (2.5 in) of precipitation over 11 days. In contrast, November's climate is much cooler, with temperatures ranging from a chilly -2°C (29°F) to a mild 16°C (62°F), averaging only 8°C (47°F). The humidity spikes to 92%, and while November sees slightly less precipitation at 52 mm (2.0 in), it also spans 11 days. For more information on this month's weather, check out London weather in November.
July and December present strikingly different weather patterns. In July, temperatures can range from a comfortable 9°C (49°F) at night to a scorching high of 36°C (96°F) during the day, with an average of 18°C (65°F). The month sees around 64 mm (2.5 in) of precipitation over 11 days, accompanied by a humidity level of 71%. In contrast, December experiences much colder temperatures, dipping down to a minimum of -4°C (24°F) and only reaching a maximum of 14°C (58°F), with an average of 6°C (44°F). Precipitation increases slightly to 84 mm (3.3 in) over 13 days, and humidity rises to a substantial 92%. For more detailed climate information, you can check London weather in December.
As July arrives in London, the city's weather transforms into a delightful summer experience, characterized by warmer temperatures and a vibrant atmosphere. Unlike the chill of winter and the mildness of spring, July showcases notable highs, making it the warmest month of the year. With greater humidity and occasional rainfall, locals and visitors alike enjoy the lush greenery that follows. While the summer sun invites outdoor activities, the sporadic showers remind us that London’s weather can still be unpredictable. For an in-depth look at how July compares with other months, explore the detailed insights at London Climate.