The climate of Saint Peter Port
Saint Peter Port, nestled in
Guernsey, reflects a Marine west coast, warm summer type of climate, as categorized under the Köppen climate classification Cfb. On a broad level, the city experiences moderate temperatures throughout the year. Peaks in temperature are not overly drastic, with
January maintaining the lowest average low temperature, 7°C (44.6°F), and
August reaching the highest average high, 17.8°C (64°F).
Dealing with relative humidity, a dampness of the air ranges from 77% in
December and January to 84% in
June and
July, showcasing a slight difference across the year. While the city does not experience any snowfall, rainfall amounts vary notably, escalating from a minimum of 26mm (1.02") in July to a substantial 87mm (3.43") in
November. Rainfall days show similar turbulence, with July at the lower end with 12.8 days and November exhibiting maximum rainfall days, reaching a count of 22.8.
Focusing on sunshine hours, a distinct oscillation can be observed throughout the year, ranging from an annual low of 3.9 hours per day in December and January, ascending to an impressive 9.7 hours per day in July. A clue into the wind strength suggests a gradual increase from 21.9km/h (13.6mph) in July up to 36km/h (22.4mph) in December, leading to a mildly windy and breezy climate.
The best time to visit Saint Peter Port
Considering the blend of temperatures, precipitation, and daylight hours, the period from sustained from
June to
August emerges as the most promising time for a visit. This period not only experiences the warmest temperatures, ranging from 15.2°C (59.4°F) to 17.8°C (64°F), but also, it has the maximum amount of sunshine hours, averaging between 9.1 hours and 9.7 hours per day. Additionally, rainfall during these months leans towards the lower side, between 26mm (1.02") and 41mm (1.61"), and the sea temperatures ascend to a comfortable range between 14°C (57.2°F) and 17°C (62.6°F).
The worst time to visit Saint Peter Port
On the contrary, the span between
November and
January might not be the best time to plan a visit. This period is accompanied by colder temperatures varying from 7°C (44.6°F) to 9.8°C (49.6°F), shorter daylight hours ranging from 8.3 hours to 9.1 hours per day, and the maximum annual rainfall indexes, rising from 70mm (2.76") to 87mm (3.43").
Spring weather in Saint Peter Port
In
Saint Peter Port, Spring spans from
March to
May and sees an uplift in temperature. The average high temperature lies between 9.8°C (49.6°F) in March and 12.8°C (55°F) in May. During this period, the rainfall counts narrows down from 38mm (1.5") to 27mm (1.06"). Sunshine hours start to escalate, providing between 6.2 hours and 9.1 hours of clear skies. All these factors contribute to a welcoming spring season in the city.
Summer weather in Saint Peter Port
Summer months, ranging from
June to
August, provide the most pleasing weather conditions in
Saint Peter Port. The high temperatures sit comfortably between the range of 15.2°C (59.4°F) and 17.8°C (64°F), with the low temperatures optimally sitting in the range of 13.2°C (55.8°F) and 15.8°C (60.4°F). Rainfall levels are also quite modest with amounts oscillating between 26mm (1.02") and 41mm (1.61"). With an ample amount of sunlight, averaging between 9.1 hours to 9.7 hours per day, the city offers an enjoyable summer experience.
Autumn weather in Saint Peter Port
The autumn months of
September to
November present a gradual decline in temperature, starting at 17.2°C (63°F) in September and decreasing to 13°C (55.4°F) by November. The lower temperatures also highlight a similar downward trend, slipping from 15.4°C (59.7°F) to 10.9°C (51.6°F). Over these months, rainfall starts to increase significantly, from 31mm (1.22") in September to 87mm (3.43") by November, along with an increase in the number of rainfall days, matching between 18.5 days and 22.8 days. Despite the increase in rainfall, the city maintains a modest amount of sunlight during this period.
Winter weather in Saint Peter Port
Winter in
Saint Peter Port, stretching from
December to
February, witnesses the chilliest temperatures, averaging between 7°C (44.6°F) and 9.8°C (49.6°F). Nevertheless, the sea temperatures remain slightly higher, hovering between 10°C (50°F) and 11°C (51.8°F). The city experiences its highest humidity, 78%, and rainfall reaching between 51mm (2.01") and 70mm (2.76"), with an average of 20.37 rainfall days in
January. Even in the darkest months, Saint Peter Port receives reasonable daylight hours, stretching from 8.3 hours to 10.2 hours. While winters are fairly cold and damp, the city's weather remains relatively mild compared to many other locations.
Weather in January
The year in
Saint Peter Port,
Guernsey begins with
January, a month notable for relatively cool temperatures and high rainfall, accentuated by 63mm (2.48") of rain across 22 rainy days. The chill in the air is signaled by relatively low sea temperatures and the presence of snowfall, though it must be noted that snow remains an uncommon occurrence.
Weather in January »Weather in February
February marks a slight drying trend in
Saint Peter Port,
Guernsey, with a drop in rainfall to 51mm (2.01") over slightly fewer rainy days. A hint of the approaching spring is visible as the daily sunshine hours start to increase, but winter holds fast with brisk wind speeds and relatively low temperatures.
Weather in February » Weather in March
As
March rolls in, the first signs of spring are visible in
Saint Peter Port,
Guernsey with temperatures creeping up and an overall decrease in rainfall to 38mm (1.5") spread across fewer days. Although the days are becoming longer, wind speeds remain moderate, and the sea temperatures are still too low for most marine activities.
Weather in March »
Weather in April
April in
Saint Peter Port,
Guernsey is marked by the full onset of spring, with noticeably warmer days. Rainfall during April is recorded at only 32mm (1.26") and is dispersed over fewer days. The wind speeds decrease significantly, offering a welcome respite from the nippiness felt in the preceding months.
Weather in April » Weather in May
May ushers in an appreciably warm period in
Saint Peter Port,
Guernsey with many sunny days. Compared to
April, rainfall decreases to 27mm (1.06") and is experienced over comparatively fewer days, hence arriving at the driest month of the year.
Weather in May » Weather in June
June in
Saint Peter Port,
Guernsey witnesses a further increase in temperatures, setting the stage for forthcoming summer. Interestingly, there is a minor rise in the amount of rainfall to 33mm (1.3"), though this happens over a fractional increase in rainy days.
Weather in June »
Weather in July
As the year reaches its zenith,
July is the warmest month in
Saint Peter Port,
Guernsey, with temperatures reaching a peak of 16.9°C (62.4°F). The wind speed reduces somewhat from
June, contributing to the warm, summery sensation.
Weather in July »Weather in August
August in
Saint Peter Port,
Guernsey carries forward the warm and pleasant weather conditions of
July. There is a slight increase in rainfall to 41mm (1.61") over more days, suggesting the incipient easing of summer. However, with temperatures enjoying their peak and wind speeds remaining moderate, the weather conditions are still predominantly summery.
Weather in August » Weather in September
As summer begins to recede in
Saint Peter Port,
Guernsey,
September brings a gentle mix of warmth and freshness in the air. Rainfall records a slight decrease to 31mm (1.22") over relatively fewer days. The daylight hours start to dwindle, heralding the slow approach of winter.
Weather in September »
Weather in October
October in
Saint Peter Port,
Guernsey, signifies the full onset of autumn with a marked decrease in temperatures and longer, cooler nights. An increase in rainfall to 58mm (2.28") over a rise in the number of rainy days, underlines the progression towards winter.
Weather in October » Weather in November
In
November,
Saint Peter Port,
Guernsey registers a further drop in temperature, and with 87mm (3.43") of rain over 22.8 days, it becomes the wettest month of the year. As winter approaches, reduction in daylight hours is noticeable, and the sea temperature also shows a considerable decline.
Weather in November »Weather in December
[Resources]