May Weather in City of Westminster, United Kingdom

Last updated: March 17, 2025

May in the City of Westminster offers a mix of pleasant warmth and occasional showers, making it a month full of surprises. With maximum temperatures reaching a delightful 25°C (78°F) and an average of 13°C (55°F), the climate is perfect for exploring the charming streets and historic sites. However, the weather can be unpredictable, as evidenced by 11 days of rainfall totaling 62 mm (2.5 in). Humidity hovers around a comfortable 79%, providing a refreshing atmosphere. Whether basking in the sun or enjoying the gentle rain, May is a vibrant time to visit this iconic city.

May Temperature in City of Westminster

As May arrives in the City of Westminster, the temperatures begin to rise markedly, signaling the delightful approach of summer. With a minimum of around 1°C (35°F) and a pleasant average of 13°C (55°F), residents and visitors alike can shed their winter layers and enjoy the unfolding bloom of spring. The maximum temperature can reach a comfortable 25°C (78°F), making it an ideal time for outdoor adventures and leisurely strolls through the city's beautiful parks. This month marks a distinct transition from the chill of early spring in April, where temperatures peaked at just 26°C (80°F), showcasing the rapid warming trend as the season progresses towards the vibrant summer months ahead.

May Weather in City of Westminster: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in City of Westminster, 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 City of Westminster 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 City of Westminster

In May, the City of Westminster experiences a notable uptick in precipitation, with 62 mm (2.5 in) of rain recorded over 11 days. This increase marks a shift from the drier conditions of April, which saw only 33 mm (1.3 in). As spring blossoms into summer, May typically brings more frequent showers, making it one of the wetter months of the year. This pattern not only replenishes local flora but also sets the stage for the rainier June, which averages 77 mm (3.0 in). The consistent rainfall in late spring underscores the importance of these months for both nature and city life, as Westminster transitions into its vibrant summer season.

May Precipitation Trends in City of Westminster

The chart displays monthly precipitation patterns in City of Westminster, 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 City of Westminster

In the City of Westminster, May brings a noticeable shift in humidity levels, with a comfortable average of 79%. This marks a significant decrease from the wetter winter months—January’s humidity hovers at a lofty 91% and February at 89%. As spring progresses, April sees a slight dip to 85%, but it is in May that residents truly feel the transition to drier weather. This trend of decreasing humidity continues into June with 80%, indicating a gradual approach to the summery conditions of July, where levels drop further to 71%. As the year unfolds, Westminster's humidity fluctuates, but May stands out as a refreshing reprieve before the summer heat sets in.

May Average Humidity in City of Westminster

This chart illustrates the average monthly humidity levels in City of Westminster, 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 City of Westminster

As spring transitions into summer, the UV Index in the City of Westminster experiences a notable surge, with May showcasing a high UV Index of 7. This indicates an increased risk of harm from unprotected sun exposure, leading to a recommended burn time of just 25 minutes. Comparatively, the months preceding May maintain a low to moderate range, with January and February recording the lowest values of 1 and 2, respectively. However, the climb is significant, jumping to 4 in March and reaching 5 in April before hitting its peak in May. As the sun’s intensity ramps up, residents are urged to take precautions to protect their skin. To explore more about the UV Index trends throughout the year, visit City of Westminster UV Index.

Maximum UV Index Levels in City of Westminster for May

The chart shows the monthly maximum UV Index (UVI) for City of Westminster 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: City of Westminster 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 City of Westminster

May welcomes a delightful surge of sunshine in the City of Westminster, with 398 hours basking in daylight, marking it as the sunniest month so far this year. This vibrant increase follows a steady ascent from 319 hours in April, culminating in a captivating contrast against the dreariness of the earlier months. After a sluggish start to the year with just 98 hours in January and a gradual climb into spring, Westminster starts to embrace the warmth of longer days. As summer approaches, the city's sunshine record continues to glow, peaking at 404 hours in July, highlighting a trend of increasing sunshine that elevates the overall vibrancy of the season.

Monthly Sunshine Duration in City of Westminster: May Highlighted

The May sunshine duration represents the total number of hours City of Westminster 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: City of Westminster May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in City of Westminster During May

In the City of Westminster, the likelihood of sunny weather in May presents a noticeable trend as spring unfolds. With a 33% chance of sunshine, May is a transition month, falling between the more promising conditions of April, which boasts a 49% chance, and a summer that starts to cool down in June at 28%. This slight dip in sunny prospects from April suggests that while May holds the potential for delightful days, it is not quite as reliable as its predecessor. Nevertheless, it surpasses the chances seen in the chillier months of winter and early spring, making May an intriguing time for outdoor activities amidst the blooming beauty of nature.

Percentage of Sunny Days in May in City of Westminster

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

Daylight Hours in City of Westminster in May

In the City of Westminster, May marks a delightful peak in daylight hours, basking in 15 hours of sunlight that contrast sharply with the shorter days of winter. As the year unfolds, daylight begins at a modest 8 hours in January, gradually increasing through February's 9 hours and March's 11 hours. By April, the days stretch to 13 hours, setting the stage for May’s abundant brightness. This upward trend continues into the summer months, reaching a maximum of 16 hours in both June and July, before gradually tapering off as autumn approaches. August sees a decline to 14 hours, followed by further reductions through September and October, before the cycle returns to winter’s shorter days. This rhythm of changing daylight reveals the beauty and contrast of seasons in Westminster.

Average Daylight Hours in City of Westminster for May

The chart illustrates the variation in daylight duration in City of Westminster 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: City of Westminster daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in City of Westminster

In the City of Westminster, May brings with it a gentle breeze, with an average wind speed of 4.2 m/s (9 mph), mirroring the conditions of January. As the city shakes off the chill of winter, this mild wind speed provides a refreshing backdrop for outdoor activities. Over the months leading to May, wind speeds fluctuate, peaking in February at 4.7 m/s (11 mph) before tapering off in the following months. Interestingly, wind levels drop to their lowest point in June at 3.1 m/s (7 mph), suggesting a shift towards calmer, warmer days as summer approaches. Overall, May’s breezy yet moderate conditions make it an ideal time for enjoying the enchanting parks and vibrant streets of Westminster.

Average May Wind Speed in City of Westminster

The chart displays monthly wind speed patterns in City of Westminster, 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: City of Westminster May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in City of Westminster Compares to Other Months

The weather in City of Westminster 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 City of Westminster and find detailed weather information for every month.

May and January showcase distinctly different 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), making it a much warmer month overall. This springtime month receives 62 mm (2.5 in) of precipitation over approximately 11 days, and the humidity stands at 79%, resulting in a pleasant atmosphere for outdoor activities. In contrast, January experiences colder temperatures, with a minimum of -5°C (24°F) and a maximum of 14°C (58°F), averaging around 5°C (41°F). It has slightly less precipitation at 54 mm (2.1 in) but higher humidity at 91%, contributing to a chillier and more damp environment. For more detailed information, refer to City of Westminster weather in January.

When comparing the weather in May and February, May generally offers milder and more enjoyable conditions. 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). This month experiences about 62 mm (2.5 in) of precipitation over 11 days, along with a humidity level of 79%. In contrast, February is significantly colder, with temperatures ranging from a low of -5°C (23°F) to a high of 18°C (65°F), averaging just 6°C (43°F). Although February has slightly less rainfall at 53 mm (2.1 in) and the same number of rainy days, the humidity is higher at 89%. For more detailed information, you can visit the link: City of Westminster weather in February.

In comparing the weather of May and March, we can see a notable shift in temperatures and conditions. May typically enjoys milder temperatures, averaging 13°C (55°F) with highs reaching up to 25°C (78°F), while March has a lower average of 7°C (46°F) and maximum temperatures peaking at 22°C (71°F). Additionally, May experiences slightly more precipitation at 62 mm (2.5 in) over 11 days, compared to March's 54 mm (2.1 in) over 13 days. Humidity levels are also lower in May at 79%, contrasted with March’s higher 86%. For more specific details, you can check the City of Westminster weather in March.

In comparing the weather of May and April, May generally presents milder temperatures with a minimum of 1°C (35°F) and an average of 13°C (55°F), contrasting with April's colder minimum of -2°C (29°F) and average of 10°C (49°F). While both months can experience warmer maximum temperatures, April records a peak of 26°C (80°F), slightly higher than May's maximum of 25°C (78°F). May also sees an increase in precipitation, totaling 62 mm (2.5 in) over 11 days, compared to April's 33 mm (1.3 in) over 8 days. Humidity remains relatively high in both months, with April slightly ahead at 85% compared to May's 79%. For a more detailed look at April's weather, you can visit City of Westminster weather in April.

May and June present a noticeable transition in weather patterns. In May, temperatures range from a chilly minimum of 1°C (35°F) to a pleasant average of 13°C (55°F), peaking at 25°C (78°F). The month sees a total of 62 mm (2.5 in) of precipitation over 11 days, with humidity around 79%. In contrast, June offers warmer conditions with minimum temperatures starting at 7°C (45°F), an average of 16°C (62°F), and maximum highs reaching 31°C (89°F). Rainfall increases slightly to 77 mm (3.0 in) over 9 days, accompanied by a humidity level of 80%. For more details, check out the City of Westminster weather in June.

May and July present distinct differences in weather patterns. In May, temperatures range from a cool minimum of 1°C (35°F) to a comfortable average of 13°C (55°F) and can reach a pleasant maximum of 25°C (78°F). This month also experiences significant humidity at 79%, with precipitation totaling 62 mm (2.5 in) spread over 11 days. In contrast, July features warmer temperatures, with a minimum of 9°C (49°F), an average of 18°C (65°F), and occasional peaks at 36°C (96°F). Interestingly, despite a slight increase in precipitation to 64 mm (2.5 in) over the same number of rainy days, July exhibits lower humidity at 71%. For a closer look at the weather specifics for July, visit City of Westminster weather in July.

May and August present distinct weather patterns. In May, temperatures range from a brisk 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 sees around 62 mm (2.5 in) of precipitation over 11 days, coupled with relatively high humidity at 79%. In contrast, August features a notably warmer climate, with temperatures starting at a minimum of 8°C (47°F) and soaring to a maximum of 34°C (93°F), averaging 18°C (64°F). Precipitation slightly increases to 70 mm (2.7 in) spread over 12 days, while humidity remains moderate at 76%. For more detailed information about August weather, you can check City of Westminster weather in August.

May and September present distinct weather patterns as the seasons transition. 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 sees about 62 mm (2.5 in) of precipitation over 11 days and maintains a humidity level of 79%. Conversely, September experiences slightly warmer conditions, with temperatures varying from 4°C (39°F) to 28°C (83°F), averaging 15°C (59°F). Precipitation decreases to 45 mm (1.8 in) over 10 days, while humidity rises slightly to 82%. For more detailed information, you can check the climate conditions here: City of Westminster weather in September.

May and October present contrasting yet somewhat similar weather patterns. In May, temperatures range from a chilly 1°C (35°F) at night to a warm 25°C (78°F) during the day, with an average temperature of 13°C (55°F). Precipitation in May averages around 62 mm (2.5 inches) over approximately 11 days, accompanied by a relative humidity of 79%. In contrast, October brings a slightly cooler average temperature of 12°C (54°F) with daytime highs of 22°C (73°F) and nighttime lows still hovering around 1°C (34°F). The month sees increased precipitation, averaging 84 mm (3.3 inches) across 12 days, and a higher humidity level of 90%. For more detailed insights on October weather, you can visit City of Westminster weather in October.

May and November present quite different weather patterns. In May, temperatures range from a minimum of 1°C (35°F) to a pleasant maximum of 25°C (78°F), with an average of 13°C (55°F). This month sees around 62 mm (2.5 inches) of rainfall over 11 days, while humidity sits at a relatively comfortable 79%. In contrast, November experiences cooler conditions, with temperatures dipping as low as -2°C (29°F) and averaging only 8°C (47°F), peaking at 16°C (62°F). Although November has slightly less precipitation at 52 mm (2.0 inches) across the same number of days, the humidity is notably higher at 92%. For a more detailed look at November weather, visit City of Westminster weather in November.

In May, the weather is generally mild with temperatures ranging from a minimum of 1°C (35°F) to a pleasant maximum of 25°C (78°F), averaging around 13°C (55°F). The month sees about 62 mm (2.5 in) of precipitation over approximately 11 days, accompanied by a relatively moderate humidity level of 79%. In contrast, December brings much cooler temperatures, with a minimum of -4°C (24°F) and a maximum of only 14°C (58°F), settling at an average of 6°C (44°F). This month experiences slightly higher precipitation at 84 mm (3.3 in) over about 13 days, along with increased humidity at 92%. For more detailed information, you can visit City of Westminster weather in December.

Compare City of Westminster's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in City of Westminster

In May, the City of Westminster springs to life with a noticeable warm-up, marking a contrast to the cooler months that preceded it. As temperatures climb, with maximums reaching a delightful 25°C, residents and visitors alike can finally embrace the outdoors. However, a humid atmosphere, often hovering around 79%, reminds us that spring can still deliver some rainy days, with approximately 11 days experiencing precipitation. This blend of warmth and occasional showers creates the perfect backdrop for vibrant blooms and lively city events, making May a unique transition into the summer months. To explore the year-round weather patterns, visit City of Westminster Climate.