May Weather in Porthleven, United Kingdom

Last updated: March 17, 2025

May in Porthleven, United Kingdom offers a delightful mix of spring weather, with temperatures ranging from a comfortable maximum of 20°C (68°F) to a cooler minimum of 6°C (42°F), averaging around 12°C (54°F). Visitors can expect frequent rain, with 64 mm (2.5 in) of precipitation spread across 11 days, contributing to the region's lush landscapes. The month typically features a high humidity level of 85%, enhancing the invigorating coastal atmosphere. Embrace the unique charm of Porthleven this May, where nature flourishes and the vibrant community thrives despite the occasional shower.

May Temperature in Porthleven

In May, Porthleven begins to shake off the chill of winter, presenting a delightful transition into spring. Temperatures range from a minimum of 6°C (42°F), gently rising to an enjoyable maximum of 20°C (68°F), with an average of 12°C (54°F). This pleasant warmth sets the stage for a more vibrant coastal atmosphere, inviting locals and visitors alike to explore its scenic charm. The trend shows a steady increase in temperatures from the cooler months, promoting outdoor activities as longer days and milder evenings encourage social gatherings. With each passing day, Porthleven proudly showcases its blossoming character, making May an ideal time to relish the beauty of this coastal gem.

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

The chart illustrates May temperature patterns in Porthleven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec474848505459636260565250
Data source: Temperature data for Porthleven 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 Porthleven

In May, Porthleven experiences a moderate level of precipitation, with 64 mm (2.5 in) recorded over approximately 11 days of rainfall. This amount is a notable increase from the drier April, which saw just 45 mm (1.8 in) over 8 days. The rainfall in May often sets the stage for the lush greenery of summer, as the region begins to vibrate with life after the spring showers. Interestingly, this month's precipitation is lower than the preceding months of January, February, and March, but it aligns closely with September's levels, suggesting a pattern of rainfall that peaks in the cooler months and tapers slightly as the temperatures rise. The consistent precipitation underscores Porthleven's coastal weather, where the ocean's influence often leads to a dynamic climate.

May Precipitation Trends in Porthleven

The chart displays monthly precipitation patterns in Porthleven, 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.
JanFebMarAprMayJunJulAugSepOctNovDec739085466474705764120102123
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Porthleven

In May, Porthleven experiences a notable rise in humidity, reaching 85%. This increase marks a gradual trend observed throughout spring, where humidity levels have steadily climbed from 81% in January to 83% in April. As the weather warms and nature comes alive, this heightened moisture in the air contributes to the lush landscape of the region, setting the stage for the slightly cooler, yet equally humid months of June through August. Consistent humidity levels during this period reflect the maritime climate, creating a refreshing yet damp ambiance that characterizes life by the coast.

May Average Humidity in Porthleven

This chart illustrates the average monthly humidity levels in Porthleven, 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.
JanFebMarAprMayJunJulAugSepOctNovDec81%84%82%83%85%85%85%85%84%84%82%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Porthleven

As May rolls into Porthleven, the UV Index escalates to 7, marking a high exposure category that underscores the importance of sun protection. This trend follows a steady incline from the previous months, with April already ramping up to a 6. The burn time for fair skin decreases to 25 minutes, making it crucial to be mindful of sun safety, especially as we edge closer to the summer months. Compared to the earlier part of the year, where UV levels were notably lower—like January's modest 2—May signals a significant shift in solar intensity. With June approaching and expectations of even higher UV levels, understanding these trends is vital for enjoying the sunny weather safely. For those planning their outdoor activities, stay informed at Porthleven UV Index.

Maximum UV Index Levels in Porthleven for May

The chart shows the monthly maximum UV Index (UVI) for Porthleven 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.
JanFebMarAprMayJunJulAugSepOctNovDec234679886421
Data source: Porthleven 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 Porthleven

In Porthleven, United Kingdom, May shines as a highlight in the annual sunshine calendar, boasting an impressive 407 hours of sunshine. This month stands out not only for its warmth but also as a turning point, welcoming the peak brightness of summer ahead. March and April lay the groundwork with 235 and 354 hours respectively, gradually coaxing the sun out of its winter slumber. Following May, June and July maintain this vibrant trend, with 403 and 427 hours of sun, reinforcing Porthleven's reputation as a delightful seaside destination. As summer wanes into August and beyond, the hours of sunshine begin to disminish, yet May remains a cherished gem in the hearts of locals and visitors alike.

Monthly Sunshine Duration in Porthleven: May Highlighted

The May sunshine duration represents the total number of hours Porthleven 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.
JanFebMarAprMayJunJulAugSepOctNovDec94h156h235h354h407h403h427h387h330h261h156h118h
Data source: Porthleven May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Porthleven During May

In Porthleven, the likelihood of sun begins to rise significantly as the year progresses, peaking in April at 51%. By May, however, it dips slightly to 38%, indicating a transition into warmer weather but with a mix of cloudy days likely. This trend reflects a common pattern of fluctuating sunshine as spring edges closer to summer, yet May still offers a considerable chance for sunny moments, making it a delightful time to enjoy the coastal charm of this quaint village. As the season continues, the probability of sunny weather stabilizes in the summer months, suggesting that while May may not be the sunniest, it certainly holds the promise of pleasant days ahead.

Percentage of Sunny Days in May in Porthleven

The chart illustrates the percentage of sunny days in Porthleven 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 Porthleven experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%24%34%52%38%31%40%33%33%30%24%20%
Data source: Porthleven May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Porthleven in May

As spring blossoms into summer, daylight duration in Porthleven, UK, reveals a captivating trend of gradual elongation. In May, the sun graces the skies for 15 hours, reflecting the peak of spring’s vibrant renewal. The transition from the 8 hours of daylight in January to this bountiful month marks a journey of increasing brightness. Following May, daylight continues to peak in June with an impressive 16 hours, before gently tapering off in the following months. This rhythm of light not only enriches the picturesque coastal landscape but also invites residents and visitors to revel in the longer evenings of outdoor activities, showcasing Porthleven’s charm during these sun-filled months.

Average Daylight Hours in Porthleven for May

The chart illustrates the variation in daylight duration in Porthleven throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 35m10h 4m11h 55m13h 48m15h 26m16h 17m15h 50m14h 22m12h 33m10h 41m9h8h 7m
Data source: Porthleven daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Porthleven

In May, Porthleven experiences a gentle breeze, with average wind speeds reaching 6.9 m/s (15 mph). This transitional month follows a trend of decreasing winds, as April showcased a slightly higher average of 5.6 m/s (12 mph). Interestingly, May’s winds are stronger than those in both July and August, which settle at 5.3 m/s (12 mph). As the season progresses towards summer, the wind typically softens, but May stands out as a perfect blend of refreshing gusts and mild coastal charm. Overall, this month provides a delightful outdoor experience, with winds that contribute positively to the vibrant atmosphere of Porthleven.

Average May Wind Speed in Porthleven

The chart displays monthly wind speed patterns in Porthleven, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.08.46.65.66.9 m/s4.65.35.35.16.55.88.4
Data source: Porthleven May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Porthleven Compares to Other Months

The weather in Porthleven 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 Porthleven and find detailed weather information for every month.

May and January present distinctly different weather patterns. In May, temperatures range from a minimum of 6°C (42°F) to a maximum of 20°C (68°F), with an average of 12°C (54°F). The month tends to be relatively wet, with 64 mm (2.5 in) of precipitation spread over 11 days, coupled with high humidity at 85%. In contrast, January experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 15°C (58°F), averaging 8°C (47°F). While the month also sees precipitation, it is slightly higher at 73 mm (2.9 in) over 12 days, with humidity at a lower 81%. For more specific insights on January weather, you can visit Porthleven weather in January.

In comparing the weather of May and February, notable differences emerge in both temperature and precipitation patterns. May generally offers more comfortable temperatures, with a minimum of 6°C and a maximum of 20°C, while February experiences chillier conditions, ranging from a minimum of -1°C to a maximum of 13°C. Precipitation is higher in February, totaling 90 mm over 15 days, compared to May's 64 mm across 11 days, making February the wetter month. However, humidity levels are quite similar, with May at 85% and February at 83%. For a deeper look at February's weather specifics, you can visit Porthleven weather in February.

When comparing the weather in May and March, there are notable differences in temperature and precipitation. May brings milder temperatures, with a minimum of 6°C (42°F) and an average of 12°C (54°F), peaking at 20°C (68°F). In contrast, March starts colder, with a minimum of -2°C (28°F) and an average of 9°C (48°F), reaching a maximum of 14°C (57°F). Additionally, May experiences less precipitation, totaling 64 mm (2.5 in) over 11 days, while March sees heavier rainfall at 85 mm (3.4 in) over 16 days. The humidity is slightly higher in May, at 85%, compared to March’s 82%. For a more detailed look at the weather in March, you can visit Porthleven weather in March.

In comparing the weather between April and May, we observe that May generally offers slightly warmer temperatures, with averages reaching up to 12°C (54°F) compared to April's 10°C (50°F). The maximum temperatures in May can reach 20°C (68°F), while in April, they peak at 18°C (64°F). However, May also brings more precipitation, totaling 64 mm (2.5 in) over 11 days, compared to April's 45 mm (1.8 in) over 8 days. Humidity levels are relatively similar, with May at 85% and April at 83%. For a more detailed look at April weather, check out Porthleven weather in April.

May and June exhibit a notable transition in weather patterns. In May, temperatures range from a minimum of 6°C (42°F) to a maximum of 20°C (68°F), with an average of 12°C (54°F). Precipitation totals 64 mm (2.5 in) across 11 days, while humidity remains relatively high at 85%. In contrast, June sees a rise in temperatures, with a minimum of 10°C (50°F) and a maximum of 23°C (75°F), averaging 15°C (59°F). Although June experiences a slight increase in precipitation to 74 mm (2.9 in) over the same number of days, the humidity remains steady at 85%. For more detailed insights on June weather, you can visit Porthleven weather in June.

May and July exhibit notable differences in weather conditions. In May, temperatures range from a cool 6°C (42°F) at night to a comfortable 20°C (68°F) during the day, with an average of 12°C (54°F). This month experiences around 64 mm (2.5 in) of rainfall across approximately 11 days, maintaining a high humidity level of 85%. In contrast, July brings warmer temperatures, with minimums of 12°C (53°F) and maximums reaching 24°C (76°F), resulting in an average of 17°C (63°F). While July has slightly more precipitation at 70 mm (2.8 in) over about 10 days, the humidity remains consistent at 85%. For more details, check out Porthleven weather in July.

May and August showcase distinct weather patterns, reflecting the transition from spring to summer. In May, temperatures range from a chilly 6°C (42°F) at night to a comfortable high of 20°C (68°F), with an average of 12°C (54°F). The month experiences 64 mm (2.5 in) of rainfall over 11 days, accompanied by high humidity at 85%. In contrast, August offers warmer temperatures, with nighttime lows of 12°C (54°F) and daytime highs reaching 22°C (72°F), averaging 17°C (62°F). Despite being a summer month, August sees slightly less precipitation at 57 mm (2.3 in) over the same number of rainy days, while maintaining the same humidity level of 85%. For more insights on August weather, check this link: Porthleven weather in August.

In May, the weather tends to be cooler with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 20°C (68°F), averaging around 12°C (54°F). The month sees an average of 64 mm (2.5 in) of precipitation over 11 days, coupled with high humidity at 85%. In contrast, September brings slightly warmer temperatures, with a minimum of 10°C (50°F) and a maximum of 22°C (72°F), averaging 16°C (60°F). Though it also experiences around 64 mm (2.5 in) of precipitation, it has one more rainy day at 12. Humidity remains relatively stable at 84%. For more specific details about weather patterns, check out Porthleven weather in September.

When comparing the weather in May and October, both months exhibit mild temperatures, though October generally feels a bit cooler. In May, temperatures range from a minimum of 6°C (42°F) to a maximum of 20°C (68°F), with an average of 12°C (54°F). By contrast, October sees slightly lower temperatures, with a minimum of 4°C (40°F) and a maximum of 19°C (67°F), averaging at 13°C (56°F). Additionally, October experiences a noticeable increase in precipitation, receiving 120 mm (4.7 in) over 14 days, compared to May's 64 mm (2.5 in) across 11 days. Humidity levels remain fairly similar, hovering around 85% in May and 84% in October. For a more detailed look at October conditions, check out Porthleven weather in October.

May and November present distinct weather characteristics that highlight the transition from spring to autumn. In May, temperatures range from a minimum of 6°C (42°F) to a maximum of 20°C (68°F), with an average of 12°C (54°F). The month sees moderate rainfall, totaling 64 mm (2.5 in) across approximately 11 days, accompanied by relatively high humidity levels at 85%. In contrast, November features cooler temperatures, with a range of 5°C (40°F) to 16°C (61°F) and an average of 11°C (52°F). This month experiences significantly higher precipitation, reaching 102 mm (4.0 in) over about 16 days, and slightly lower humidity at 82%. For a detailed look at November weather, you can check Porthleven weather in November.

May typically boasts milder temperatures, with a minimum of around 6°C and an average high of 20°C, compared to December's cooler conditions, where temperatures range from a minimum of 4°C to a maximum of 14°C. While both months experience considerable humidity, May's level at 85% is slightly higher than December's 81%. Precipitation, however, is more pronounced in December, with 123 mm falling over 19 days, in contrast to May's 64 mm over just 11 days. For a closer look at December weather, you can refer to Porthleven weather in December.

Compare Porthleven's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Porthleven

As May unfolds in Porthleven, a refreshing transition from the cooler spring months becomes evident. With pleasant temperatures that flirt with 20°C (68°F), this month is a delightful prelude to summer compared to the chillier weeks of April. While rainfall is still a consideration, with about 64 mm (2.5 in) over 11 days, the overall humidity hovers around 85%, giving the air a fresh, vibrant feel. This blend of mild warmth and occasional showers makes May a unique and revitalizing time in Porthleven, beckoning both locals and visitors to enjoy the blossoming beauty of the region. For more insights into Porthleven's climate throughout the year, be sure to check out Porthleven Climate.