Climate and monthly weather forecast
Jersey

Jersey, the largest of the Channel Islands, possesses a unique geography that directly influences its climate. Positioned in the English Channel, just off the coast of Normandy, France, it experiences a Marine West Coast Climate, denoted as "Cfb" in the Köppen climate classification. Throughout the year, the climate is mild and maritime, characterised by cool winters and warm summers. The island does not have a dry season, as it receives regular rainfall year-round, with the average annual precipitation amounting to 850mm (33.46"). Due to its location, the island is also subject to frequent changes in weather, with clear, sunny days often interrupted by clouds and light rain. The average temperature ranges from 5°C (41°F) in the coldest months to 20°C (68°F) in the warmest, creating an environment that is generally pleasant and rarely extreme.

The best time to visit Jersey largely depends on personal preferences, but generally, the summer months from June to August are quite popular among visitors. During this period, the weather is warm and sunny, with average temperatures ranging from 15°C (59°F) to 20°C (68°F). These months also have the longest days, providing ample daylight for sightseeing and outdoor activities. The rainfall during this period is moderate, providing a refreshing respite from the summer warmth. Whether one is interested in exploring the natural beauty, engaging in water sports, or just basking in the sun, summer in Jersey offers favourable conditions.

While Jersey can be visited any time of the year, the winter months from December to February are considered less ideal for tourists. During this period, the weather is relatively cold, with average temperatures hovering between 5°C (41°F) and 8°C (46.4°F). Additionally, the island experiences increased rainfall, and days are shorter, resulting in less daylight for outdoor activities. The frequent changes in weather during these months can make planning outdoor excursions somewhat challenging. Therefore, tourists who are not fond of cooler, wetter conditions might prefer to avoid this time of the year.

Spring, from March to May, in Jersey is marked by a gradual rise in temperature and an increase in daylight hours. Early spring can still feel somewhat cool, with temperatures in March averaging between 6°C (42.8°F) and 10°C (50°F). However, by May, the average temperature rises to between 11°C (51.8°F) and 16°C (60.8°F). The spring season is also known for its relatively moderate rainfall, making the island's landscape particularly lush and vibrant. Overall, spring in Jersey is a pleasant time marked by rejuvenation and growth.

Summers, from June to August, in Jersey are generally warm and inviting. The average temperature ranges from 15°C (59°F) to 20°C (68°F), offering ideal conditions for outdoor activities and exploring the island. These are the sunniest months, with daylight lasting up to 16 hours in the middle of the summer. Rainfall during summer is relatively moderate, and the sea temperature also rises, allowing for enjoyable swimming and water sports. Summer in Jersey is vibrant and lively, with numerous local events and festivals taking place.

Autumn in Jersey, from September to November, is characterised by gradually falling temperatures and shorter days. September often feels like an extension of summer, with average temperatures from 14°C (57.2°F) to 18°C (64.4°F), but by November, temperatures usually fall to between 9°C (48.2°F) and 12°C (53.6°F). Autumn can also be wetter than other seasons, with the highest amount of rainfall usually occurring in November. Despite the changeable weather, autumn's vibrant colours and crisp air offer a unique charm.

Winter in Jersey, from December to February, is relatively mild compared to many other places in Northern Europe. The average temperatures range from 5°C (41°F) to 8°C (46.4°F), which is fairly mild but can feel chilly due to the maritime winds. This period is marked by the shortest days, with daylight lasting only around 8 hours in mid-winter. The winter months are the wettest of the year, with a higher likelihood of overcast skies and precipitation. However, snow is relatively rare, with most winter precipitation falling as rain.

January is the coldest month of the year in Jersey, marking the peak of the winter season. The average temperatures during this month range from 4°C (39.2°F) to 8°C (46.4°F). While it is cooler compared to the milder months of December and February, it is still relatively mild when compared to other places at similar latitudes. Jersey, despite being a small island, does not have significant climatic variations between different regions. Weather in January »

As the last official month of winter, February in Jersey sees a slight increase in average temperatures compared to January. The mercury hovers between 4°C (39.2°F) and 8°C (46.4°F), with occasional warmer days indicating the impending arrival of spring. Weather in February »

March in Jersey signifies the transition from winter to spring, bringing a gradual rise in temperatures and longer daylight hours. The average temperatures typically range from 6°C (42.8°F) to 10°C (50°F), an appreciable rise from February's cooler climate. Weather in March »

April in Jersey heralds the full onset of spring, bringing noticeably warmer temperatures and a considerable increase in daylight hours. The average temperatures during April range from 7°C (44.6°F) to 12°C (53.6°F), representing a continued warming trend from the transitional temperatures of March. Like the rest of the island, St. Weather in April »

May in Jersey is well into the spring season and on the cusp of summer. It presents warming temperatures, more sunshine, and reduced rainfall compared to the earlier spring months. The average temperatures generally range from 10°C (50°F) to 15°C (59°F), providing a pleasant climate suitable for a wide array of outdoor activities. In St. Weather in May »

June in Jersey ushers in the beginning of the summer season, featuring the year's longest days and steadily rising temperatures. The average temperatures for June typically lie between 13°C (55.4°F) to 18°C (64.4°F), making it one of the warmer months of the year. Weather in June »

July is the height of summer in Jersey, offering the warmest temperatures of the year and continuing the trend of long, sunny days. The average temperatures typically range from 15°C (59°F) to 20°C (68°F), with heatwaves occasionally pushing the mercury even higher. Weather in July »

August in Jersey signifies the tail end of the summer season, delivering warm temperatures, but with a slightly increased chance of rainfall compared to July. Average temperatures typically range between 15°C (59°F) to 20°C (68°F), mirroring July's warmth but with a slight cooling trend noticeable towards the end of the month. As with previous months, St. Weather in August »

September in Jersey signifies the arrival of autumn, with the weather gradually transitioning from the warmth of summer to the cooler conditions of the upcoming season. Average temperatures typically range from 14°C (57.2°F) to 18°C (64.4°F), marking a decrease from the summer highs but still maintaining a comfortable warmth, especially in the early part of the month. In St. Weather in September »

October in Jersey brings with it the full onset of the autumn season, characterized by a significant drop in temperatures and an increase in rainfall compared to the preceding months. Average temperatures typically range from 11°C (51.8°F) to 15°C (59°F), marking a noticeable shift from the warmth of September towards cooler weather. As is consistent with other months, the weather conditions in St. Weather in October »

November in Jersey marks the transition from autumn to winter, with a further drop in temperatures and an increase in precipitation. Average temperatures generally range from 8°C (46.4°F) to 12°C (53.6°F), representing a notable shift from the milder conditions of October towards the colder winter climate. In St. Weather in November »

December in Jersey heralds the arrival of winter with the year's lowest temperatures and shortest daylight hours. Average temperatures during this month typically range from 5°C (41°F) to 9°C (48.2°F), with colder snaps and frosts becoming more common, particularly during the night and early morning. In St. Weather in December »