May Weather in Hounslow, United Kingdom

Last updated: March 17, 2025

May in Hounslow, United Kingdom, showcases a delightful transition into warmer weather, with maximum temperatures averaging 25°C (78°F), contrasting with a cooler average of 13°C (55°F). While visitors can enjoy mild days, nighttime temperatures can dip as low as 1°C (35°F). This month also experiences notable precipitation, totaling 62 mm (2.5 in) over approximately 11 days, contributing to the region's lush greenery. With humidity levels at a moderate 79%, May in Hounslow is a month of refreshing contrasts, inviting both residents and tourists to revel in the vibrant spring atmosphere.

May Temperature in Hounslow

As spring transitions into summer, Hounslow experiences a delightful warming trend in May. With minimum temperatures rising to a comfortable 1°C (35°F) and an average around 13°C (55°F), residents can finally bid farewell to the lingering chill of winter. The month sees maximum temperatures reaching a pleasant 25°C (78°F), making it a perfect time for outdoor activities and enjoying the blooming scenery. Compared to the preceding months, May showcases a significant rise, with average temperatures notably higher than those in April. This shift towards milder weather sets the stage for the upcoming summer months, inviting both locals and visitors to embrace the vibrant warmth of early summer days in the heart of the United Kingdom.

May Weather in Hounslow: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Hounslow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345495562656459534643
Data source: Temperature data for Hounslow generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Hounslow

In May, Hounslow experiences a notable increase in precipitation, with 62 mm (2.5 in) of rain over 11 days. This marks a significant rise from April’s 33 mm and hints at the transition into the wetter months of late spring. The rainfall in May not only surpasses that of earlier months but also sets the stage for the impending summer, where June typically sees even higher totals. As blossoms bloom and the landscape becomes lush, residents can expect occasional showers, which provide essential moisture for the vibrant gardens that define this time of year.

May Precipitation Trends in Hounslow

The chart displays monthly precipitation patterns in Hounslow, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec545354336277647045845284
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hounslow

May in Hounslow, United Kingdom, marks a shift in humidity as the damp chill of spring begins to yield to slightly drier air. With a humidity level of 79%, May experiences a noticeable drop compared to the preceding months, showcasing a transition towards the more comfortable summer conditions. This dip sets the stage for warmer, sunnier days ahead, as June's humidity rises slightly to 80%. While the month still holds onto residual moisture from the spring, it offers a refreshing change from the high humidity levels typical of winter, which frequently hover around 91% in January and remain elevated through November. Thus, May stands as a pivotal month that gently ushers in the warmth of summer while gradually reducing the heavier humidity of earlier months.

May Average Humidity in Hounslow

This chart illustrates the average monthly humidity levels in Hounslow, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hounslow

As May rolls into Hounslow, the UV Index rises to 7, indicating a high exposure category that calls for increased sun safety awareness. This marks a notable increase from April's moderate level of 5. With a burn time reduced to just 25 minutes, it's essential to take precautions, such as applying sunscreen and wearing protective clothing when heading outside. Experts recommend being mindful of sun exposure as the summer months approach, highlighted by the very high UV Index of 8 in June and July. Understanding these trends is vital for enjoying the sunny days safely. For more information, visit Hounslow UV Index.

Maximum UV Index Levels in Hounslow for May

The chart shows the monthly maximum UV Index (UVI) for Hounslow in May, 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Hounslow May 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.

May Sunshine in Hounslow

May brings a delightful surge of sunshine to Hounslow, United Kingdom, illuminating the landscape with a remarkable 398 hours of daylight. As the year progresses, this month stands out as a peak, following a steady increase from January's 98 hours and culminating in a vibrant spring. The transition from winter to summer is beautifully evident, with the sun steadily gaining strength, especially as April's 319 hours gives way to May's brilliance. This trend continues into the summer months, where June and July maintain close to 400 hours of sunshine, making Hounslow an inviting destination for outdoor activities and social gatherings. As summer fades into autumn, the hours gradually recede, with September still basking in 300 hours, before tapering off to 144 hours by November. This rhythmic dance of daylight highlights the seasonal charm, encouraging residents and visitors alike to relish the abundant sunshine while it lasts.

Monthly Sunshine Duration in Hounslow: May Highlighted

The May sunshine duration represents the total number of hours Hounslow experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec98h148h210h319h398h389h404h368h300h241h144h109h
Data source: Hounslow May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hounslow During May

In Hounslow, May brings a moderate 33% chance of sunny weather, making it a refined blend of springtime brightness and lingering clouds. While this figure represents a decline from the peak sunny days of April, which boasts a 49% chance, it still stands out positively compared to the chillier months of January and February. Interestingly, as we transition from spring into summer, the likelihood of sunshine doesn't follow a consistent upward trajectory, dipping to 28% in June before rising again during the height of summer. This fluctuation demonstrates the unpredictability of weather patterns, reminding us that while May may not be the sunniest month, it holds its own charm amidst the changing skies.

Percentage of Sunny Days in May in Hounslow

The chart illustrates the percentage of sunny days in Hounslow throughout the year, with May 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 Hounslow experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%25%29%49%33%28%38%25%29%25%32%17%
Data source: Hounslow May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hounslow in May

As the seasons evolve in Hounslow, United Kingdom, daylight duration steadily increases, creating a vibrant ambiance that invites outdoor activities and exploration. Starting with a modest 8 hours in January, the days gradually lengthen, reaching 15 hours by May, signifying the heart of spring when blossoms flourish and parks fill with visitors. This trend continues, peaking at a luxurious 16 hours in June and July before gently tapering off. As summer gives way to autumn, daylight shrinks to 12 hours in September, and then back to 10 hours in October, reflecting nature's rhythmic cycle. As the year winds down, daylight returns to an early sunset with just 7 hours in December, but the promise of longer days ahead always remains just around the corner.

Average Daylight Hours in Hounslow for May

The chart illustrates the variation in daylight duration in Hounslow throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 23m9h 58m11h 55m13h 54m15h 38m16h 32m16h 3m14h 30m12h 35m10h 36m8h 50m7h 53m
Data source: Hounslow daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Hounslow

In May, Hounslow experiences a refreshing wind that mirrors the vibrant energy of spring. With an average wind speed of 4.2 m/s (9 mph), the breezes in this month are consistent with January's similar gusts, suggesting a gradual transition towards the summer months. These gentle winds, slightly higher than the April lull of 3.5 m/s (8 mph), create a pleasant atmosphere, ideal for outdoor activities. As the warm weather approaches, the wind tends to taper off in June, dropping to 3.1 m/s (7 mph). This trend of fluctuating speeds reveals the dynamic nature of Hounslow's climate, where May stands out as a perfect blend of gentle winds and blooming florals, paving the way for a balmy summer ahead.

Average May Wind Speed in Hounslow

The chart displays monthly wind speed patterns in Hounslow, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.74.43.54.2 m/s3.13.33.83.34.43.84.4
Data source: Hounslow May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Hounslow Compares to Other Months

The weather in Hounslow changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Hounslow and find detailed weather information for every month.

When comparing the weather in May and January, it's clear that May offers a much milder and more pleasant atmosphere. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 25°C (78°F), with an average temperature of 13°C (55°F). In contrast, January is significantly cooler, with temperatures dipping as low as -5°C (24°F) and peaking at 14°C (58°F), averaging just 5°C (41°F). Additionally, May experiences noticeably less humidity at 79%, compared to January's higher humidity of 91%. Precipitation levels are somewhat comparable, with May receiving 62 mm (2.5 in) over approximately 11 days, while January sees 54 mm (2.1 in) spread over about 10 days. For more detailed information on January weather, visit Hounslow weather in January.

In comparing the weather of May and February, notable differences emerge in temperature and humidity. May showcases a milder climate with average temperatures ranging from a chilly 1°C (35°F) to a pleasant high of 25°C (78°F), while February experiences a colder range, with temperatures dipping as low as -5°C (23°F) and peaking at 18°C (65°F). Additionally, May sees slightly more precipitation at 62 mm (2.5 in) over 11 days, compared to February's 53 mm (2.1 in) across the same number of days. Humidity is higher in February at 89%, compared to May’s 79%. For more detailed information, check Hounslow weather in February.

In March, the weather in Hounslow is notably cooler, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 22°C (71°F) and an average of 7°C (46°F). The month sees a bit more precipitation, totaling 54 mm (2.1 in) over 13 days, accompanied by higher humidity levels at 86%. In contrast, May brings warmer conditions, with temperatures varying from a minimum of 1°C (35°F) to a maximum of 25°C (78°F) and an average temperature of 13°C (55°F). Although May experiences slightly more rainfall, at 62 mm (2.5 in) across 11 days, the humidity remains a bit lower at 79%. For more information on March weather, check Hounslow weather in March.

In comparing the weather between April and May, May generally presents a milder and slightly warmer climate. While April has a minimum temperature dipping to -2°C (29°F) and an average of 10°C (49°F), May's temperatures start at 1°C (35°F) with a more comfortable average of 13°C (55°F). Notably, both months experienced maximum temperatures around 25°C (77°F in April and 78°F in May). Precipitation is more frequent in May, with 62 mm (2.5 in) over 11 days, compared to April's 33 mm (1.3 in) across 8 days. However, April has slightly higher humidity at 85%, while May averages around 79%. For more detailed information, you can check Hounslow weather in April.

In May, temperatures range from a chilly 1°C (35°F) at night to a pleasant average of 13°C (55°F) during the day, peaking at 25°C (78°F). The month also sees around 62 mm (2.5 in) of precipitation over 11 days, with humidity levels at 79%. By June, the weather becomes notably warmer, with minimum temperatures rising to 7°C (45°F), an average of 16°C (62°F), and maximums reaching up to 31°C (89°F). Although precipitation increases slightly to 77 mm (3.0 in), it falls over fewer days, just 9, while humidity remains relatively stable at 80%. For more detailed information, check Hounslow weather in June.

In May, temperatures range from a chilly 1°C (35°F) at night to a comfortable 25°C (78°F) during the day, offering an average of 13°C (55°F). The month sees about 62 mm (2.5 in) of precipitation over 11 days, accompanied by relatively high humidity at 79%. In contrast, July brings warmer conditions with nighttime lows of 9°C (49°F) and daytime highs reaching a sizzling 36°C (96°F). The average temperature for July is 18°C (65°F), and while the precipitation remains similar at 64 mm (2.5 in) across 11 days, the humidity drops to a more comfortable 71%. To learn more about July's weather patterns, you can check out Hounslow weather in July.

May and August display distinct weather characteristics, reflecting the transition from spring to summer. In May, temperatures range from a chilly minimum of 1°C (35°F) to a comfortable maximum of 25°C (78°F), with an average of 13°C (55°F). The month experiences about 62 mm (2.5 in) of precipitation spread over 11 days and maintains a relatively high humidity level of 79%. In contrast, August features warmer temperatures, with a minimum of 8°C (47°F) and a maximum reaching up to 34°C (93°F), resulting in an average temperature of 18°C (64°F). Though it sees slightly more precipitation at 70 mm (2.7 in) over 12 days, humidity drops to 76%. For more specifics on the weather during this month, visit Hounslow weather in August.

May and September both offer mild temperatures, but there are notable differences in their overall weather patterns. In May, the temperatures range from a chilly low of 1°C (35°F) to a pleasant high of 25°C (78°F), with an average of 13°C (55°F). This month experiences 62 mm (2.5 in) of precipitation over approximately 11 days, along with a humidity level of 79%. In contrast, September sees slightly warmer temperatures, with a minimum of 4°C (39°F), an average of 15°C (59°F), and a maximum of 28°C (83°F). Precipitation decreases to 45 mm (1.8 in) across around 10 days, while humidity rises marginally to 82%. For more detailed insights, check out Hounslow weather in September.

May and October present distinct weather patterns, highlighting the transition from spring to autumn. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 25°C (78°F), with an average of 13°C (55°F), and the month typically experiences 62 mm (2.5 in) of precipitation over 11 days, accompanied by a humidity level of 79%. In contrast, October features slightly cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 22°C (73°F), averaging at 12°C (54°F). This month sees an increase in precipitation to 84 mm (3.3 in) over 12 days, and humidity rises to 90%. For a deeper understanding of October's weather, you can check out Hounslow weather in October.

In May, temperatures begin to warm up, with minimums around 1°C (35°F) and maximums reaching up to 25°C (78°F), resulting in an average temperature of 13°C (55°F). The month experiences a moderate level of precipitation at 62 mm (2.5 in) over 11 days and maintains a humidity level of 79%. In contrast, November brings cooler conditions, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 16°C (62°F), averaging at 8°C (47°F). This month sees slightly less precipitation at 52 mm (2.0 in) over the same number of days, but the humidity increases to 92%, making the air feel notably damp. For more details, check out Hounslow weather in November.

May and December present contrasting weather patterns. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 25°C (78°F), with an average of 13°C (55°F). The month experiences a moderate level of precipitation at 62 mm (2.5 in) over about 11 days, and humidity sits around 79%. In contrast, December sees colder temperatures, with a minimum of -4°C (24°F) and a maximum of 14°C (58°F), averaging 6°C (44°F). This month is also wetter, receiving 84 mm (3.3 in) of precipitation over 13 days, coupled with higher humidity at 92%. For more details about the December climate, you can check Hounslow weather in December.

Compare Hounslow's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Hounslow

As May unfolds in Hounslow, the weather begins to reveal a delightful shift from the cooler months. With temperatures reaching a pleasant maximum of 25°C (78°F), this month is a welcome break from the chill, offering a taste of summer while maintaining an average temperature of 13°C (55°F). However, the month does bring along its share of rainy days, with precipitation occurring on about 11 occasions and totaling 62 mm (2.5 in), reminding us of spring's lingering presence. The humidity, hovering around a moderate 79%, adds to the season's refreshing ambiance. For more insights and details on what to expect throughout the year, explore Hounslow Climate.