Last updated: August 21, 2025
In December, Saint Peter Port, Guernsey experiences a mild maritime climate characterized by a maximum temperature of 14°C (58°F) and an average of 11°C (51°F). The nights can feel quite cool, dipping to a minimum of 5°C (41°F). This month is marked by significant precipitation, totaling 163 mm (6.4 in) over 21 days, contributing to the region's lush greenery. With an average humidity of 90%, visitors should prepare for a damp atmosphere, enhancing the cozy charm of this historic port town during the winter season.
As December arrives in Saint Peter Port, Guernsey, temperatures begin to showcase the transition from the mild autumn chill to the crisp winter air. The month typically sees minimum temperatures around 5°C (41°F), providing a refreshing bite, while the average hovers around 11°C (51°F)—a reminder that winter is indeed on its way. During the day, highs can reach up to 14°C (58°F), making for pleasantly cool afternoons perfect for a stroll along the waterfront. Compared to the milder autumn months, December introduces a slight dip in temperatures; however, it maintains a moderate climate that is characteristic of the region. As the year closes, visitors can expect a tranquil atmosphere, underscored by the beauty of winter's embrace.
In December, Saint Peter Port, Guernsey experiences a notable increase in precipitation, with an impressive 163 mm (6.4 in) falling over 21 days of rain. This marks the wettest month of the year, following October and November, which also had significant rainfall totals. The trend reveals that as the year comes to a close, the island grapples with its dampest weather, reflecting an overall pattern where winter months consistently bring more frequent and heavier showers. With December seeing almost double the precipitation of the spring months, residents and visitors alike should be prepared for the brisk, rain-soaked days that define this time of year.
In December, Saint Peter Port experiences a notable spike in humidity, reaching 90%, a level consistent with the high humidity seen in October and November. This winter month marks the tail end of a gradual increase from the drier summer periods, where humidity dipped to a comfortable 63% in July. As the year draws to a close, the transition from the relative warmth of summer into the chill of winter seems to amplify the moisture in the air, creating a cozy, albeit damp, atmosphere that envelops the island. This trend highlights the significant role of seasonal shifts in influencing humidity levels, making December one of the most humid months of the year in this picturesque location.
As the year comes to a close, December in Saint Peter Port, Guernsey brings the lowest UV Index of the year, registering at just 1, which falls into the low exposure category. With a burn time of 45 minutes, this month highlights a notable decrease in UV intensity, particularly following the higher-than-average readings seen from June to August, when the Index peaked at 9. Transitioning from the sunny heights of summer, both November and December offer more comfortable conditions, urging residents and visitors alike to enjoy the outdoors with minimal sun protection. For more insights on the UV levels throughout the year, visit Saint Peter Port UV Index.
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In December, Saint Peter Port, Guernsey, experiences a gentle decline in sunshine, with 130 hours of golden rays gracing the island. This marks a notable drop from the vibrant peak of July, where sunshine reaches its zenith at 436 hours. As winter approaches, the days shortens, but December still offers a charming contrast to the year's earlier months, especially when compared to the sun-drenched April and May, which bask in over 350 hours. This seasonal transition signals not just the end of the year, but also a delightful opportunity to appreciate the softer light and serene beauty of the coastal landscape, making December a unique time to explore the island's natural charm.
In December, the likelihood of experiencing sunny weather in Saint Peter Port, Guernsey, dips to 26%, marking one of the year's lowest chances for sunshine. This trend reflects a gradual decline as colder months approach, with a notable contrast to the more hopeful figures of spring. April boasts a sunny probability of 62%, while summer months typically hover around 49% for July. As the year winds down, residents and visitors can expect increasing cloudiness and fewer sunny days, a pattern consistent with the cooler months from November through January. Despite the lower odds, the charm of Guernsey’s coastal landscapes remains, inviting those who appreciate the unique beauty of winter’s embrace.
As December rolls in, Saint Peter Port, Guernsey, experiences a familiar descent into shorter days, with daylight lasting a modest 8 hours. This marks a continuation of the annual trend where daylight sees a gradual increase from the winter months of November's 9 hours to the longer stretches of light found in spring and summer. Notably, the longest days peak in June with 16 hours of daylight, but as the year nears its end, the ongoing cycle reminds us of nature’s rhythm. The progression from 8 hours in December reflects the comforting embrace of the winter solstice, offering a chance to relish those cozy, candle-lit evenings before the days gradually start to lengthen once more.
As the year draws to a close, the December winds in Saint Peter Port, Guernsey, pick up the pace, averaging a brisk 9.8 m/s (22 mph), making it one of the windiest months of the year. This notable increase follows a generally declining trend from the spring's gentle breezes of 6.8 m/s in April to the more moderate summer winds hovering around 6.0 to 6.6 m/s. By the time autumn arrives, the winds begin to regain their strength, peaking sharply in December. Compared to the earlier months, which averaged between 6.0 and 9.1 m/s, the gusty conditions in December not only invigorate the coastal landscape but also signal the arrival of winter, enveloping Saint Peter Port in an enchanting embrace of invigorating maritime energy.
Weather in Saint Peter Port varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint Peter Port, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present a notable contrast in weather, particularly in temperature and precipitation. December typically sees slightly milder temperatures, with averages around 11°C (51°F), while January cools down a bit with an average of 9°C (49°F). Although both months can reach a maximum of 14°C (57°F), January starts off with lower minimum temperatures, hitting 3°C (37°F), compared to December's 5°C (41°F). Rainfall also differs significantly, as December experiences a higher total of 163 mm (6.4 in) over 21 days, whereas January receives just 94 mm (3.7 in) across 14 days. Humidity levels remain quite similar, with December at 90% and January slightly lower at 89%. For a detailed look at January's weather, you can refer to Saint Peter Port weather in January.
In comparing the weather between December and February, December tends to be slightly milder, with average temperatures ranging from 5°C (41°F) to 14°C (58°F), while February sees lower minimum temperatures of 0°C (33°F) and a slightly cooler average temperature of 9°C (48°F). December is also characterized by higher precipitation levels, with 163 mm (6.4 in) over 21 days, compared to February's 86 mm (3.4 in) over just 16 days. Humidity levels are quite similar in both months, hovering around 90% in December and 88% in February. For more specific details on February weather patterns, you can visit Saint Peter Port weather in February.
In December, the weather is generally milder, with average temperatures ranging from 5°C (41°F) at night to a maximum of 14°C (58°F) during the day. This month sees significant rainfall, accumulating about 163 mm (6.4 in) over 21 days, coupled with high humidity levels at 90%. In contrast, March experiences cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 13°C (55°F), and average precipitation drops to 73 mm (2.9 in) over 15 days. The humidity is slightly lower at 85%, making March feel less damp compared to December. For more details on March weather in Saint Peter Port, visit Saint Peter Port weather in March.
December and April exhibit distinct weather characteristics. In December, temperatures tend to be slightly warmer, with an average of 11°C (51°F) and highs reaching 14°C (58°F), but the month is marked by high humidity at 90% and significant precipitation of 163 mm (6.4 in) spread over 21 days. In contrast, April features a cooler average temperature of 10°C (50°F) and slightly higher maximums of 15°C (59°F), accompanied by much drier conditions, with only 34 mm (1.3 in) of rain falling over 8 days and lower humidity levels at 84%. For more specific details about April weather, you can check Saint Peter Port weather in April.
December and May present contrasting weather conditions. In December, the temperatures range from a minimum of 5°C (41°F) to a maximum of 14°C (58°F), with an average of 11°C (51°F). The month is characterized by significant precipitation, totaling 163 mm (6.4 in) over approximately 21 days, coupled with high humidity levels at 90%. In contrast, May brings milder temperatures with a minimum of 7°C (45°F) and a maximum reaching 18°C (65°F), averaging 12°C (54°F). The weather is generally drier, with only 55 mm (2.2 in) of precipitation spread across 8 days and lower humidity at 81%. For more details about the weather in May, visit Saint Peter Port weather in May.
December and June present strikingly different weather conditions. In December, temperatures range from a chilly 5°C (41°F) at night to a mild 14°C (58°F) during the day, accompanied by frequent rainfall totaling 163 mm (6.4 in) across 21 days. The high humidity of 90% adds to the winter chill, creating a damp atmosphere. In contrast, June offers a more pleasant climate, with minimum temperatures starting at 11°C (53°F) and reaching a comfortable average of 14°C (58°F) during the day, peaking at 19°C (67°F). Rainfall is significantly reduced to 59 mm (2.3 in) over just 8 days, and humidity drops to a more comfortable 77%. For those interested, you can find more details on Saint Peter Port weather in June.
When comparing the weather in December to that of July, it becomes evident that these two months offer contrasting experiences. December is cooler, with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 14°C (58°F), accompanied by a significant amount of rainfall at 163 mm (6.4 in) over approximately 21 days, resulting in a high humidity level of 90%. In stark contrast, July enjoys milder temperatures, with averages between 14°C (57°F) and 21°C (70°F), as well as markedly less precipitation, totaling just 37 mm (1.5 in) over 7 days, and lower humidity at 63%. This makes July a much drier and more temperate month compared to the damp, chilly conditions of December. For a closer look at July's weather specifics, you can check Saint Peter Port weather in July.
In December, the weather is notably cooler with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 14°C (58°F) and an average of 11°C (51°F). The month is characterized by high humidity at 90% and significant precipitation, totaling 163 mm (6.4 in) over 21 days. In contrast, August offers a much milder climate, where temperatures vary from a minimum of 14°C (57°F) to a maximum of 22°C (72°F), with an average of 17°C (63°F). Precipitation in August is considerably lower, at just 50 mm (2.0 in) over 9 days and humidity is a much more comfortable 71%. For more detailed information, you can check Saint Peter Port weather in August.
In comparing the weather between December and September, it's clear that September boasts milder temperatures, with average highs reaching 21°C (71°F) compared to December's maximum of 14°C (58°F). The minimum temperature in December drops to 5°C (41°F), whereas September starts at a more comfortable 12°C (54°F). Additionally, September experiences significantly less rainfall, with only 63 mm (2.5 in) over 9 days, while December sees a substantial increase in precipitation, totaling 163 mm (6.4 in) across 21 days. The humidity levels are also higher in December at 90%, compared to September's 76%. For more details on September weather, you can check Saint Peter Port weather in September.
December weather tends to be cooler and wetter compared to October. With minimum temperatures dropping to around 5°C (41°F), December averages about 11°C (51°F) and peaks at 14°C (58°F). In contrast, October sees milder temperatures, ranging from a minimum of 9°C (48°F) to a maximum of 20°C (68°F) and an average of 15°C (59°F). Precipitation also increases in December, reaching 163 mm (6.4 in) over 21 days, while October has slightly less at 144 mm (5.7 in) over 17 days. Despite the drop in temperature, December's humidity remains high at 90%, just above October's 89%. For more specifics about October weather, check out Saint Peter Port weather in October.
In comparing the weather between November and December, we can observe several notable differences. December tends to be slightly cooler, with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 14°C (58°F), whereas November experiences a marginally warmer range with a minimum of 6°C (43°F) and a maximum of 17°C (63°F). Precipitation also increases in December, totaling 163 mm (6.4 in) over 21 days compared to November's 126 mm (5.0 in) over 18 days. Both months share a high humidity level of 90%, but December’s cooler temperatures and greater rainfall may contribute to a more overcast and damp atmosphere. For a more detailed look at November's climate, you can visit Saint Peter Port weather in November.
December in Saint Peter Port offers a unique glimpse into winter, marked by mild temperatures that set it apart from the rest of the year. While the average temperature hovers around a comfortable 11°C, the month’s distinct chill is accompanied by a significant amount of rain, with precipitation occurring on nearly two-thirds of the days. This high humidity, reaching 90%, creates a damp atmosphere that is more pronounced than in other months. As the year draws to a close, the weather invites cozy indoor activities, making it a perfect time to explore the rich history and charm of this beautiful port. For a deeper understanding of the climate, check out Saint Peter Port Climate.