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Climate in Jersey (United Kingdom)


Average weather, temperature, rainfall, sunshine hours

Flag - United Kingdom

Jersey, where it is located


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Climate chart - Jersey
The climate of Jersey is oceanic, cool and humid throughout the year.
Jersey is the largest of the Channel islands, which are found a short distance from the French coast of Lower Normandy, and belong to Great Britain. The main islands are Jersey, Guernsey and Alderney.
The climate of Jersey is very similar to that of the neighboring island of Guernsey, although it is slightly more exposed to both cold and heat, since it is closer to the continent.

Precipitation amounts to 865 millimeters (34 inches) per year. The relatively wettest season is autumn, the least rainy is summer.

Winter, from December to February, is quite cold: temperatures are not so low, but wind and humidity can increase the sensation of cold. The sky is often cloudy, and rainfall is frequent. Sometimes, intense Atlantic depressions can cause wind storms.
Snowfalls are relatively rare and not abundant. Usually, cold spells are not intense and do not last long. The temperature rarely drops below -5 °C (23 °F), however, the coldest record is -10.9 °C (12.4 °F) and was set in January 1963.

In spring, from March to May, the temperature slowly rises, and Atlantic fronts become a bit less frequent. In May, it is often still quite cold, especially in the first half of the month.

Summer, from June to August, is cool, with quite frequent rains, but also with a bit of good weather. Sometimes fog can form.
Hot days are rare: the temperature may not reach 25 °C (77 °F) for an entire month. However, it can sometimes exceed 30 °C (86 °F). The highest record is 37.8 °C (100 °F) and was set in July 2022. The previous record was 36 °C (96.8 °F), set in July 2019.

Autumn, from September to November, is gray, cloudy and rainy, and with each passing week, it gets progressively colder. In November, the wind is often moderate or strong.

Mont Orgueil castle

The sun in Jersey does not shine often from October to March (although it can come out between one disturbance and another), while from April to September, it shines for an acceptable number of hours. In a year, there are 1,900 hours of sunshine: we are at the levels of the English south coast, which is the highest in Great Britain.

The sea is cold all year round, however, from July to September the water temperature reaches 17/18 °C (62/64 °F).

Best Time


The best time to visit Jersey runs from June to mid-September. July and August are the warmest months, or the least cool, however, it's better to bring a sweatshirt and a light jacket also in midsummer.

Jersey - Climate data


In Jersey, the average temperature of the coldest month (February) is of 6.5 °C, that of the warmest month (August) is of 17.5 °C. Here are the average temperatures.
Jersey - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January4.78.66.7
February4.38.86.5
March5.410.78
April6.813.110
May9.415.912.6
June11.918.615.2
July13.920.417.1
August14.320.617.5
September12.918.915.9
October10.615.513.1
November7.9129.9
December5.49.57.5
Year914.411.7

Precipitation amounts to 865 millimeters per year: so, it is at an intermediate level. It ranges from 45 millimeters in the driest month (July) to 110 millimeters in the wettest one (December). Here is the average precipitation.
Jersey - Average precipitation
MonthRain (mm)Days
January9515
February7012
March6512
April5510
May559
June508
July457
August507
September659
October10514
November10515
December11016
Year865133

The sea temperature ranges from 9 °C in February, March to 18 °C in August. Here are the average sea temperatures.
Jersey - Sea temperature
MonthTemperatures (°C)
January10
February9
March9
April10
May12
June14
July17
August18
September17
October15
November13">
December12
Year13

There are on average around 1905 sunshine hours per year. Here are the average hours of sunshine per day.
Jersey - Sunshine hours
MonthAverageTotal
January265
February3.595
March4.5135
April6.5195
May7.5235
June8245
July8255
August7.5235
September6185
October4120
November2.580
December265
Year5.21905

Jersey - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January is generally a quite mild month. The average temperature is of 6.7 °C, with a minimum of 4.7 °C and a maximum of 8.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -1 °C. However, it dropped to -6.5 °C in January 1997.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 12 °C. However, it reached 13.4 °C in January 1993.
Rain iconPrecipitation amounts to 95 mm, distributed over 15 days.
The day lasts on average 8 hours and 40 minutes.
Sun iconThere are on average 2 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of 24.6 kph.
Sea iconThe average sea temperature is of 10 °C. Therefore, the sea is very cold for swimming.


February, the coldest month of the year, is generally a quite cold month. The average temperature is of 6.5 °C, with a minimum of 4.3 °C and a maximum of 8.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -1 °C. However, it dropped to -8.7 °C in February 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 12.5 °C. However, it reached 16.6 °C in February 2019.
Rain iconPrecipitation amounts to 70 mm, distributed over 12 days.
The day lasts on average 10 hours and 10 minutes.
Sun iconThere are on average 3.5 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of 23.1 kph.
Sea iconThe average sea temperature is of 9 °C. Therefore, the sea is very cold for swimming.


March is generally a quite mild month. The average temperature is of 8 °C, with a minimum of 5.4 °C and a maximum of 10.7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 1 °C. However, it dropped to -3.4 °C in March 2018.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 16 °C. However, it reached 20.3 °C in March 2012.
Rain iconPrecipitation amounts to 65 mm, distributed over 12 days.
The day lasts on average 12 hours and 0 minutes.
Sun iconThere are on average 4.5 hours of sunshine per day. So, the sun shines 36% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 21.8 kph.
Sea iconThe average sea temperature is of 9 °C. Therefore, the sea is very cold for swimming.


April is generally a mild month. The average temperature is of 10 °C, with a minimum of 6.8 °C and a maximum of 13.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3 °C. However, it dropped to -0.7 °C in April 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 20 °C. However, it reached 25.2 °C in April 2020.
Rain iconPrecipitation amounts to 55 mm, distributed over 10 days.
The day lasts on average 13 hours and 50 minutes.
Sun iconThere are on average 6.5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 20.2 kph.
Sea iconThe average sea temperature is of 10 °C. Therefore, the sea is very cold for swimming.


May is generally a mild month. The average temperature is of 12.6 °C, with a minimum of 9.4 °C and a maximum of 15.9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 5.5 °C. However, it dropped to 1.7 °C in May 2010.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 23.5 °C. However, it reached 27.6 °C in May 2017.
Rain iconPrecipitation amounts to 55 mm, distributed over 9 days.
The day lasts on average 15 hours and 25 minutes. So the days are long.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 19.2 kph.
Sea iconThe average sea temperature is of 12 °C. Therefore, the sea is very cold for swimming.


June is generally a very mild month. The average temperature is of 15.2 °C, with a minimum of 11.9 °C and a maximum of 18.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 8.5 °C. However, it dropped to 6.5 °C in June 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27 °C. However, it reached 32.5 °C in June 2017.
Rain iconPrecipitation amounts to 50 mm, distributed over 8 days.
The day lasts on average 16 hours and 10 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 18.5 kph.
Sea iconThe average sea temperature is of 14 °C. Therefore, the sea is very cold for swimming.


July is generally a very mild month. The average temperature is of 17.1 °C, with a minimum of 13.9 °C and a maximum of 20.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11 °C. However, it dropped to 9.3 °C in July 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27.5 °C. However, it reached 36 °C in July 2019.
Rain iconPrecipitation amounts to 45 mm, distributed over 7 days.
The day lasts on average 15 hours and 40 minutes. So the days are long.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 18.1 kph.
Sea iconThe average sea temperature is of 17 °C. Therefore, the sea is cold for swimming.


August, the warmest month of the year, is generally a very mild month. The average temperature is of 17.5 °C, with a minimum of 14.3 °C and a maximum of 20.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11 °C. However, it dropped to 7.7 °C in August 2011.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28 °C. However, it reached 34.3 °C in August 2003.
Rain iconPrecipitation amounts to 49.5 mm, distributed over 7 days.
The day lasts on average 14 hours and 20 minutes. So the days are long.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 17.6 kph.
Sea iconThe average sea temperature is of 18 °C. Therefore, the sea is cold for swimming.


September is generally a very mild month. The average temperature is of 15.9 °C, with a minimum of 12.9 °C and a maximum of 18.9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 9 °C. However, it dropped to 6.5 °C in September 2018.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 24.5 °C. However, it reached 30.8 °C in September 2020.
Rain iconPrecipitation amounts to 65 mm, distributed over 9 days.
The day lasts on average 12 hours and 30 minutes.
Sun iconThere are on average 6 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 19.6 kph.
Sea iconThe average sea temperature is of 17 °C. Therefore, the sea is cold for swimming.


October is generally a mild month. The average temperature is of 13.1 °C, with a minimum of 10.6 °C and a maximum of 15.5 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 5.5 °C. However, it dropped to 0.4 °C in October 1997.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 19.5 °C. However, it reached 25.6 °C in October 2011.
Rain iconPrecipitation amounts to 105 mm, distributed over 14 days.
The day lasts on average 10 hours and 40 minutes.
Sun iconThere are on average 4 hours of sunshine per day. So, the sun shines 36% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 22.2 kph.
Sea iconThe average sea temperature is of 15 °C. Therefore, the sea is cold for swimming.


November is generally a mild month. The average temperature is of 9.9 °C, with a minimum of 7.9 °C and a maximum of 12 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3 °C. However, it dropped to -3 °C in November 2010.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 15.5 °C. However, it reached 17.6 °C in November 2016.
Rain iconPrecipitation amounts to 105 mm, distributed over 15 days.
The day lasts on average 9 hours and 5 minutes.
Sun iconThere are on average 2.5 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of 23.8 kph.
Sea iconThe average sea temperature is of 13 °C. Therefore, the sea is very cold for swimming.


December is generally a quite mild month. The average temperature is of 7.5 °C, with a minimum of 5.4 °C and a maximum of 9.5 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -0.5 °C. However, it dropped to -5.1 °C in December 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 13 °C. However, it reached 14.7 °C in December 2015.
Rain iconPrecipitation amounts to 110 mm, distributed over 16 days.
The day lasts on average 8 hours and 10 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 2 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of 24.8 kph.
Sea iconThe average sea temperature is of 12 °C. Therefore, the sea is very cold for swimming.

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