Last updated: March 17, 2025
August in London, United Kingdom is a month of contrasts, featuring sunny days with a maximum temperature reaching up to 34°C (93°F), while the average temperature hovers around a pleasant 18°C (64°F). As the summer wanes, the city experiences a mix of warm afternoons and cooler evenings, with a minimum temperature dipping to 8°C (47°F). Humidity remains relatively high at 76%, adding a touch of stickiness to the air. However, don’t forget your umbrella—precipitation is expected on 12 days, totaling 70 mm (2.7 in) throughout the month. Whether you’re exploring the vibrant cityscape or enjoying a quiet park, August offers a dynamic and enjoyable experience in London.
In August, London basks in warm temperatures that mark the height of summer. With minimums around 8°C (47°F) and averages settling at a pleasant 18°C (64°F), the city enjoys a cozy yet vibrant climate. The real charm lies in the maximum temperatures, which can soar up to 34°C (93°F), offering ideal conditions for outdoor events and leisurely strolls along the Thames. Following the hot July, August maintains the warmth but signals a gradual transition towards early autumn, as the days grow slightly shorter. This blend of warmth and comfortable evenings invites both locals and tourists to relish in London’s parks and lively streets before the cooler months set in.
August in London sees a noticeable uptick in precipitation, with 70 mm (2.7 inches) of rain spread over 12 days. This increased rainfall marks a shift from the drier months of late spring and early summer, where June and July recorded lower totals of 77 mm and 64 mm, respectively. Despite not being the wettest month overall, August ranks high in terms of rainy days, suggesting a persistent drizzle rather than heavy downpours. As the city transitions into autumn, the weather becomes more humid and unsettled, hinting at the upcoming 84 mm in October, which often brings heavier and more concentrated rainfall. This pattern highlights a gradual increase in precipitation that sets the tone for the wetter months ahead.
August in London brings a slight dip in humidity, averaging around 76%, a modest change from the sweltering July levels of 71%. This period marks a transition from the peak summer months toward the more humid later part of the year. As the city bids farewell to summer, humidity begins to rise again, leading into a consistently damp September at 82%. Overall, while August offers a reprieve with relatively comfortable conditions, it foreshadows the return of the city’s characteristic moisture, with humidity levels creeping back up as autumn approaches. This trend highlights London's perennial climate, where even warm months are intertwined with the persistent, sticky air that residents have come to expect year-round.
In August, the UV Index in London remains at a high level of 7, indicating it's crucial to take protective measures during sun exposure. As summer peaks, the burn time is approximately 25 minutes, highlighting the need for diligent sun safety. With values gradually decreasing from the peak 8 seen in both June and July, it's evident that while August still offers sunny days, the intensity of UV radiation starts to ease as the season transitions into fall. This trend showcases the importance of being sun-smart even in late summer. For more detailed information, visit the London UV Index.
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August in London boasts a generous 368 hours of sunshine, marking a vibrant transition from the sun-soaked months of July and June, which enjoy even more daylight at 404 and 389 hours respectively. As summer peaks, the city's bright days taper off slightly, yet August remains one of the strongest months for sunshine, following the ascent from just 98 hours in January to a high of 404 hours in July. This light-filled month serves as a bridge to the cooler, cloudier autumn, with September also retaining a respectable 300 hours of sunlight. Overall, Londoners can bask in the warmth of summer's lingering rays before embracing the gradual shift to shorter days ahead.
As summer peaks, August in London offers a shift in weather dynamics, but the chance of sunny days remains moderate at 25%. While the sunniest months, like April, feature nearly half of their days drenched in sunlight, August's probability dips below those heights, reminiscent of June and May's cooler profiles. This forecast reflects a broader trend of fluctuating sunshine throughout the year, where the winter months struggle with a mere 19% to 25% likelihood of sun. Such patterns highlight the unpredictability of London's weather—an invitation to embrace both the patches of brightness and the charm of a quintessentially British drizzle.
As summer draws to a close in August, London enjoys a generous 14 hours of daylight, providing a radiant backdrop for the city's activities. This duration reflects a slight decline from the peak of 16 hours experienced in both June and July, signaling the transition towards autumn. The daylight hours have gradually increased since the dreariness of January, where only 8 hours were available, creating a pattern of rising daylight as spring unfolds into summer. As the year progresses, daylight diminishes, with September seeing a decrease to 12 hours and the days continuing to shorten through the fall and winter months. This rhythm serves as a reminder of the beautiful cycle of light that graces London throughout the year.
In August, the wind in London tends to be a gentle whisper, with an average speed of 3.8 m/s (8 mph), marking a slight increase from the calmer summer months of June and July. As summer reaches its twilight, the breezes become more invigorating, setting a perfect backdrop for leisurely strolls along the Thames or vibrant markets in the city. This trend of relatively mild winds continues into the autumn, reflecting a gradual shift in the season's atmosphere. Notably, the average wind speeds remain consistently lower during the peak of summer, contrasting with the brisk gusts of October and December, which boast averages of 4.4 m/s (10 mph). As summer fades, residents and visitors alike can enjoy this tranquil wind that ushers in the delightful changes of late summer into fall.
The weather in London changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August'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.
When comparing the weather in August and January, it's evident that these months have starkly different climates. August boasts a warmer temperature range, with minimums around 8°C and maximums reaching 34°C, averaging a comfortable 18°C. In contrast, January experiences much cooler temperatures, where minima can drop to -5°C and average a mere 5°C, with maximums of only 14°C. Rainfall is relatively moderate in both months, with August receiving about 70 mm across 12 days, while January sees slightly less at 54 mm over 10 days. The humidity in January is also higher at 91%, compared to 76% in August, contributing to the chill of winter. For more detailed insights, you can check the link: London weather in January.
August and February present a stark contrast in weather patterns. August typically boasts warmer temperatures, with an average of 18°C (64°F) and highs reaching up to 34°C (93°F), while February has cooler averages around 6°C (43°F) and maximums peaking at 18°C (65°F). Additionally, August experiences higher humidity at 76%, contributing to a notable warmth. In contrast, February has a higher humidity level of 89%, which, combined with lower temperatures, creates a chilly atmosphere. Precipitation levels are also noteworthy; August sees 70 mm (2.7 in) of rain over approximately 12 days, whereas February has slightly less at 53 mm (2.1 in) over 11 days. For further details on February weather, check out London weather in February.
August and March present quite different weather conditions. In August, temperatures range from a low of 8°C (47°F) to a high of 34°C (93°F), with an average of 18°C (64°F). The month experiences around 70 mm (2.7 inches) of precipitation across 12 days, while humidity is relatively high at 76%. In contrast, March sees cooler temperatures, with a minimum of -5°C (23°F), an average of 7°C (46°F), and a maximum of 22°C (71°F). Although it has slightly less precipitation at 54 mm (2.1 inches) over 13 days, humidity is higher at 86%. For more information on March weather, check London weather in March.
When comparing the weather in April and August, we see a stark contrast in temperatures and overall conditions. August boasts a much warmer climate, with average temperatures reaching 18°C (64°F) and highs soaring up to 34°C (93°F). In contrast, April starts out cooler, with an average temperature of 10°C (49°F), and its maximum temperature only hitting 26°C (80°F). While both months experience some rainfall—70 mm (2.7 in) in August compared to 33 mm (1.3 in) in April—April has slightly fewer rainy days, with 8 compared to August's 12. Humidity levels also differ, being slightly higher in April at 85%, compared to 76% in August. For a detailed look at the weather during this month, you can reference London weather in April.
In comparing the weather between August and May, August tends to be much warmer, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), compared to May's milder range of 1°C (35°F) to 25°C (78°F). Both months experience a fair amount of precipitation, with August receiving around 70 mm (2.7 in) over 12 days, slightly more than May's 62 mm (2.5 in) across 11 days. Humidity levels are relatively high in both months, with August at 76% and May slightly higher at 79%. For more detailed information about May weather specifically, you can check out London weather in May.
In comparing the weather between June and August, one can observe notable differences in temperature and precipitation. August typically features a wider temperature range with minimums of 8°C (47°F) and maximums reaching up to 34°C (93°F), resulting in an average temperature of 18°C (64°F). In contrast, June has slightly cooler readings, with a minimum of 7°C (45°F) and a maximum of 31°C (89°F), averaging 16°C (62°F). Precipitation in August totals 70 mm (2.7 in) over about 12 days, while June experiences a slightly higher rainfall of 77 mm (3.0 in) over just 9 days. Humidity levels are also high in both months, peaking at 76% in August and 80% in June. For a more detailed look at June's weather, visit London weather in June.
In comparing the weather between July and August, both months feature similar average temperatures around 18°C (64°F), but with distinct variations in extremes. July typically sees a slightly warmer maximum temperature of 36°C (96°F), compared to August's high of 34°C (93°F). Additionally, July experiences a slightly higher minimum temperature at 9°C (49°F) versus August's 8°C (47°F). Precipitation levels are fairly close, with July receiving 64 mm (2.5 in) over 11 days and August slightly wetter at 70 mm (2.7 in) across 12 days. Additionally, August tends to be more humid with a humidity level of 76%, compared to July's 71%. For more insights on July weather specifics, visit London weather in July.
In August, the weather tends to be warmer, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 34°C (93°F) and an average of 18°C (64°F). The month experiences approximately 70 mm (2.7 in) of precipitation over about 12 days, coupled with a humidity level of 76%. In contrast, September sees cooler temperatures, with a minimum of 4°C (39°F), an average of 15°C (59°F), and a maximum of 28°C (83°F). Additionally, it has less precipitation at 45 mm (1.8 in) over 10 days and slightly higher humidity at 82%. For more detailed information, you can check this link: London weather in September.
August and October present quite contrasting weather patterns. In August, temperatures range from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), with an average of 18°C (64°F), making it a warmer month ideal for outdoor activities. However, it also has a notable humidity level of 76% and experiences approximately 70 mm (2.7 in) of rainfall over 12 days. In contrast, October sees cooler temperatures, with a minimum of 1°C (34°F), an average of 12°C (54°F), and a maximum of 22°C (73°F). This month tends to be wetter, with precipitation reaching 84 mm (3.3 in) over the same number of days, and the humidity increases to 90%. For more detailed information, you can check London weather in October.
August and November present contrasting weather patterns. In August, temperatures typically range from a pleasant 8°C (47°F) at night to a warm 34°C (93°F) during the day, with an average of 18°C (64°F). The month experiences moderate rainfall, averaging 70 mm (2.7 in) over 12 days and comes with a humidity level of 76%, providing a warm, albeit sometimes muggy, atmosphere. In contrast, November sees much cooler temperatures, with a minimum of -2°C (29°F) and a maximum of only 16°C (62°F), averaging around 8°C (47°F). Despite lower total precipitation at 52 mm (2.0 in) across 11 days, November features a higher humidity level of 92%, which can contribute to a chilly and damp feeling. For a more detailed look at what to expect during this time, visit London weather in November.
August and December present stark contrasts in weather. In August, temperatures range from a mild minimum of 8°C (47°F) to a sweltering maximum of 34°C (93°F), with an average of 18°C (64°F). This month typically sees 70 mm (2.7 in) of precipitation over 12 days, accompanied by a humidity level of 76%. Conversely, December features much colder conditions, with minimum temperatures dropping to -4°C (24°F) and a maximum of only 14°C (58°F), resulting in an average temperature of 6°C (44°F). This winter month experiences a slightly higher rainfall of 84 mm (3.3 in) across 13 days, all with elevated humidity levels of 92%. For more detailed information on December's weather, you can refer to London weather in December.
As summer reaches its peak in August, London experiences a notable shift in weather, showcasing warm temperatures and increased humidity that lend a vibrant energy to the city. Unlike the cooler months, August often sees warmer days that can soar to sweltering highs, complemented by a refreshing average that encourages outdoor exploration. However, the month is also marked by bursts of rain, leading to a dance of sunshine and showers that keeps the landscape lush. With about 12 days of precipitation, visitors should be prepared for brief rain, but the striking warmth and lively atmosphere make it an enticing time to enjoy all that London has to offer. For a deeper insight into the city's climate patterns, check London Climate.