Last updated: August 21, 2025
May in Saint Peter Port, Guernsey offers a pleasant maritime climate, with maximum temperatures reaching a comfortable 18°C (65°F) and an average of 12°C (54°F). While the minimums dip to around 7°C (45°F), the warmth is often accompanied by moderate humidity levels at 81%, creating a refreshing atmosphere. Rainfall is a consideration, with approximately 55 mm (2.2 in) of precipitation spread across 8 days, making it a month ideal for experiencing the region's lush greenery and vibrant blooms. Embrace the charm of spring as you explore this picturesque coastal town!
As spring unfolds in Saint Peter Port, Guernsey, May brings a delightful warming trend, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 18°C (65°F). This marks a significant leap from earlier months, as the average temperature rises to 12°C (54°F), indicating a clear shift towards more pleasant and inviting weather. Compared to the cooler days of April, where highs only reached 15°C (59°F), May offers an appealing mix of milder days perfect for outdoor adventures and exploration. With the warmth, the vibrant beauty of Guernsey's coastal landscape begins to blossom, making it an ideal time to experience the island's charm under the welcoming sun.
In May, Saint Peter Port, Guernsey experiences a transition towards drier weather, with precipitation totaling 55 mm (2.2 in) over just 8 days. This marks a notable increase from the significantly wetter conditions of earlier months, such as January and February, where precipitation was over 90 mm. As spring unfolds, May's rainfall is less than April's mere 34 mm, highlighting a shift towards sunnier skies. With the days growing longer, May serves as a gentle prelude to the summer months, paving the way for the slightly higher rainfall anticipated in June, encouraging lush greenery while maintaining a delightful balance of pleasant weather.
In May, Saint Peter Port experiences a noticeable dip in humidity, with levels at 81%, reflecting the transition into drier summer months. Following the trend from the previous month, where humidity was slightly higher at 84%, May indicates a continuing decrease as temperatures rise. This seasonal shift sets the stage for the upcoming summer, where July sees the most significant drop to 63%. As the year progresses, the gradual decline from the wetter winter months—January through April—highlights the coastal climate's dynamic nature, balancing between refreshing breezes and occasional humidity.
As May arrives in Saint Peter Port, Guernsey, the UV Index climbs to a notable 7, indicating a high exposure category with a burn time of just 25 minutes. This uptick in UV levels follows a trend observed from the previous months — moving from a moderate index in March and April to a high index that starts to shape summer health considerations. As the days grow longer and sunnier, it's vital to take precautions to protect your skin while enjoying the pleasant spring weather. The consistent rise in UV intensity leading into summer highlights the importance of awareness, making it essential to stay informed about local UV forecasts. For detailed readings, visit Saint Peter Port UV Index.
UV Risk Categories
As May unfolds in Saint Peter Port, Guernsey, the island basks in the warmth of 414 hours of sunshine, marking a delightful peak in its early summer radiance. This month stands out as a significant transition from the increasing daylight hours seen in previous months like April, with its 359 hours, paving the way for the sun-drenched days that lie ahead. Following closely behind, June and July continue this trend, each boasting over 400 hours of sun, creating an inviting atmosphere for outdoor activities. The gradual climb from the wintry chill of January's mere 107 hours to the vibrant glow of May beautifully illustrates the evolving charm of Guernsey's climate, drawing both locals and visitors to revel in the island's sunnier disposition.
In Saint Peter Port, Guernsey, May brings a notable shift in sunny weather compared to the earlier months. With a 42% chance of sun, May sees a decline from the 62% sunshine experienced in April, yet it remains above the lower probabilities recorded in the preceding months of January and February. This slight dip is not unusual, as the region typically enjoys varied spring weather. As the summer approaches, June and July promise more sunny days, but May offers a refreshing opportunity to bask in the moderate springtime sun, making it a delightful month for outdoor activities.
As spring unfolds in Saint Peter Port, Guernsey, May brings a delightful surge in daylight hours, with 15 hours of sunlight illuminating the landscape. This marks a significant leap from the 13 hours experienced in April, showcasing the gradual transition towards the vibrant summer days. Following this peak in May, daylight begins to wane slightly, dropping to 16 hours in June and tapering off through the summer months. Such trends emphasize the increasing warmth and activity in nature, inviting residents and visitors alike to enjoy the longer days before they blend into the shorter, cozier months of autumn and winter. The steady increase in daylight hours throughout spring signals a time of rejuvenation and abundance in Guernsey, with May standing out as a beacon of light and life.
In May, the winds in Saint Peter Port, Guernsey are brisk yet bearable, with an average speed of 8.2 m/s (18 mph). This is a notable uplift from the calmer breezes of April, reflecting a transition towards a more blustery spring as the months progress. After experiencing a peak in January and February at around 9.0 m/s and 9.1 m/s respectively, the wind speeds dip in early spring before making a slight recovery in May. The pattern reveals a trend of diminishing winds as the summer months approach, where June sees a significant drop to just 4.6 m/s (10 mph). This combination of refreshing winds makes May an ideal time to enjoy the vibrant landscapes of Guernsey while still feeling the invigorating touch of the sea breeze.
Weather in Saint Peter Port varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Saint Peter Port, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, it is evident that May enjoys milder temperatures, with average highs reaching 18°C (65°F) compared to January's maximum of 14°C (57°F). While May has a minimum temperature of 7°C (45°F) and an average of 12°C (54°F), January's temperatures dip slightly lower, with a minimum of 3°C (37°F) and an average of 9°C (49°F). Precipitation is also notably higher in January, with 94 mm (3.7 in) falling over 14 days, compared to May's 55 mm (2.2 in) over just 8 days. Additionally, the humidity in January is slightly higher at 89%, compared to 81% in May. For those interested in more specific details, you can check Saint Peter Port weather in January.
In May, the weather in Saint Peter Port is generally milder, with average temperatures ranging from 7°C (45°F) to a maximum of 18°C (65°F), and an average humidity of 81%. The month experiences about 55 mm (2.2 in) of precipitation over approximately 8 days. In contrast, February tends to be cooler with temperatures averaging between 0°C (33°F) and 13°C (56°F). It also experiences higher rainfall, with 86 mm (3.4 in) across 16 days and slightly increased humidity at 88%. For a more detailed comparison, check out Saint Peter Port weather in February.
When comparing the weather in March and May, notable differences arise in both temperature and precipitation. In March, temperatures range from a chilly minimum of 0°C (32°F) to a maximum of 13°C (55°F), with an average of 9°C (49°F). The month is relatively wet, experiencing 73 mm (2.9 in) of rainfall spread over 15 days and humidity levels at 85%. In contrast, May offers a milder climate, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 18°C (65°F), and an average of 12°C (54°F). Although May sees less precipitation at 55 mm (2.2 in) over 8 days, the humidity remains high at 81%. For more detailed insights into March weather, you can visit Saint Peter Port weather in March.
In comparison to April, May experiences slightly warmer temperatures, with average highs reaching 18°C (65°F) compared to April's maximum of 15°C (59°F). The minimum temperatures are also higher in May, averaging 7°C (45°F) versus April's 5°C (41°F). While both months see precipitation on 8 days, May receives more rainfall overall, totaling 55 mm (2.2 in) compared to April's 34 mm (1.3 in). Humidity levels are marginally lower in May at 81% compared to April's 84%. For a detailed look at the weather in April, you can visit Saint Peter Port weather in April.
In May, the weather typically features lower temperatures, with a minimum of 7°C (45°F) and an average of 12°C (54°F), while June sees a slight increase, with minimum temperatures rising to 11°C (53°F) and an average of 14°C (58°F). Both months experience similar precipitation levels, with May receiving 55 mm (2.2 in) and June slightly more at 59 mm (2.3 in), accompanied by rain on about 8 days in each month. Humidity is also higher in May at 81%, compared to June's 77%, making June feel a bit more comfortable despite the similar rain frequency. For more detailed information on June weather specifics, visit Saint Peter Port weather in June.
In comparing the weather of May and July, notable differences emerge in temperature and humidity. May experiences cooler temperatures, with an average of 12°C (54°F) and maximums reaching only 18°C (65°F). In contrast, July sees warmer conditions, with an average temperature of 16°C (62°F) and highs reaching 21°C (70°F). Moreover, May has higher humidity at 81%, while July offers a more comfortable humidity level of 63%. Precipitation is relatively mild in both months, with May receiving 55 mm (2.2 in) over 8 days, compared to July's 37 mm (1.5 in) over 7 days. For more details on the typical weather conditions during July, you can check Saint Peter Port weather in July.
The weather in May is generally cooler and wetter compared to August, with an average temperature of 12°C (54°F) and about 55 mm (2.2 in) of precipitation over 8 rainy days. In contrast, August enjoys milder temperatures, averaging 17°C (63°F) and slightly less rainfall at 50 mm (2.0 in) across 9 days. Additionally, humidity levels are higher in May at 81%, while August offers a more comfortable 71%. For more details, you can check Saint Peter Port weather in August.
In May, the weather tends to be cooler, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 18°C (65°F). The month sees approximately 55 mm (2.2 in) of precipitation over about 8 days, with humidity levels reaching 81%. In contrast, September experiences milder temperatures; the minimum is 12°C (54°F), averaging around 17°C (62°F), and peaking at 21°C (71°F). While September has slightly more precipitation at 63 mm (2.5 in) over 9 days, the humidity is somewhat lower at 76%. This shift in weather marks a transition from the coolness of spring to the more temperate conditions of early fall. For more specific details on September weather, check out Saint Peter Port weather in September.
In comparing the weather between May and October, we see notable differences in temperature and precipitation. May typically experiences milder temperatures, with averages ranging from a chilly 7°C to a comfortable maximum of 18°C, accompanied by about 55 mm of rainfall spread over 8 days. In contrast, October sees slightly warmer temperatures, with a minimum of 9°C and a maximum reaching 20°C. However, this month also brings significantly higher precipitation levels, totaling 144 mm over 17 days, alongside increased humidity at 89%. For a detailed look at October's weather, you can check Saint Peter Port weather in October.
Comparing the weather in May and November reveals some notable differences. Both months share a similar average temperature of around 12°C (54°F), but November tends to be slightly cooler, with a minimum temperature of 6°C (43°F) compared to May's 7°C (45°F). While May experiences a moderate amount of rainfall (55 mm over 8 days), November sees a significant increase in precipitation, totaling 126 mm across 18 days, making it a much wetter month. Additionally, November's humidity is higher at 90%, compared to May's already elevated 81%. For more specific details on November weather, you can check Saint Peter Port weather in November.
When comparing the weather in May and December, it's clear that both months have distinct characteristics. May typically experiences milder temperatures, with a minimum of 7°C and a maximum reaching 18°C. It also sees relatively lower precipitation at 55 mm, spread over about 8 rainy days, and an average humidity of 81%. In contrast, December is cooler, with temperatures ranging from a minimum of 5°C to a maximum of 14°C. This month is much wetter, with total precipitation of 163 mm over 21 days, and even higher humidity levels at 90%. For a more detailed look at December weather specifics, you can explore Saint Peter Port weather in December.
As May unfolds in Saint Peter Port, the weather transitions to milder temperatures, marking a pleasant departure from the chill of earlier months. With an average temperature around 12°C (54°F) and maximums reaching up to 18°C (65°F), outdoor activities become increasingly enjoyable, inviting visitors to explore the picturesque scenery. While rainfall remains a factor, with about 55 mm over approximately 8 days, the increased humidity of 81% creates a refreshing atmosphere that signals the approach of summer. For a comprehensive understanding of the climate variations throughout the year, be sure to check out Saint Peter Port Climate.