The climate of Saint Helier

The current climate in Saint Helier features temperatures ranging from a high of 21°C to a low of 10°C throughout the year. The average yearly temperature is around 16°C. At night, temperatures in the colder months average around 5°C and in the warmer months around 15°C.

Average temperatures and precipitation

This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Saint Helier, Jersey.

Temperature records

The highest temperature recorded in Saint Helier in recent years was 38°C in July 2022. The lowest daytime temperature recorded was -2°C in February 2018.

Rainfall amount

On average, Saint Helier receives 693 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.

Best time to visit Saint Helier?

The best time to visit Saint Helier for sunny weather is June through September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Saint Helier. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.

Climate Table of Saint Helier

The climate table of Saint Helier shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Temp. max (°C)	10	10	11	14	16	19	21	21	20	16	13	11
Temp. min (°C)	6	6	7	8	11	13	15	15	14	12	9	8
Precipitation
Precipitation (mm)	81	62	55	26	29	44	23	37	47	85	105	99
UV Index	2	3	5	7	8	8	8	7	6	4	2	2

Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.

Temperature charts

These charts display the average temperatures in Saint Helier, Jersey. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Average Temperature per Month in Saint Helier

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Yearly Temperature in Saint Helier

Precipitation charts

These charts show the average amount of precipitation in Saint Helier, Jersey. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Average Precipitation per Month in Saint Helier

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Total Yearly Precipitation in Saint Helier

UV index chart

This chart shows the average UV index per month in Saint Helier, Jersey. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.

Average UV Index per Month in Saint Helier

Weather experiences in Saint Helier

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Average weather in Saint Helier by month

Click on a month below to see detailed weather info for Saint Helier. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.