Temperatures in December
It's cool in December in Saint Helier with an average temperature of 11°C. Temperatures this month range from a low of 9°C to a high of 12°C. At night, you can expect temperatures between 6°C and 10°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Saint Helier in December. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of December
The month of December starts in Saint Helier with cold temperatures, averaging around 11°C during the day and nights close to 8°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-December
By mid-December, the average daytime temperature stays the same at 11°C, with nights close to 8°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of December
By the end of December, the average daytime temperature in Saint Helier will be around 12°C, with nights close to 8°C. A shower might show up, but overall the weather will be dry and sunny.
Water temperature
The water temperature at Saint Helier is 11°C this month. This is too cold to swim without protective gear.
Precipitation in December
In December, there is an average of 99 mm of precipitation, spread over 15 days. Of the total precipitation, about 0,1 cm falls as snow in December. The wind speed is around 5 Bft, mostly coming from the Southwest.
The average precipitation chance is 49% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in December for Saint Helier. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Saint Helier in December |
London | ||
|---|---|---|---|
 Average Temperature |
11°C | 9°C | |
 High Temp |
12°C | 11°C | |
| Low Temp |
9°C | 8°C | |
 Total Precipitation |
99 mm | 67 mm | |
| Rainy Days |
15 days | 10 days | |
 Total Snowfall |
0,1 cm | 1,2 cm | |
| Snowy Days |
1 day | 1 day | |
November
UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Temperature records for Saint Helier in December
With 15°C, Saint Helier hit the highest temperature in the last 10 years in December 2021. The lowest daytime temperature in this month was 2°C in 2022. The extreme night temperatures ranged from a low of -2°C to a high of 13°C.
Check out the climate of Saint Helier for all months and discover the best travel time
Daily Temperature in December in Saint Helier
This chart shows the average daily temperatures, both day and night, for each day in December in Saint Helier, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in December in Saint Helier
The chart below shows the average daily precipitation in December for Saint Helier, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 15 days of rain in Saint Helier.
Daily Snowfall in December in Saint Helier
This chart shows the average daily snowfall in December in Saint Helier, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in December.
Daily UV Index in December in Saint Helier
This chart shows the average daily UV index in December in Saint Helier, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Saint Helier Over the Years
This chart shows the average temperature in December in Saint Helier, measured in degrees Celsius, over the past years.
Total Precipitation in December in Saint Helier Over the Years
This chart shows the average precipitation in December in Saint Helier, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in December in Saint Helier per year
This chart shows the average snowfall in December in Saint Helier, measured in centimetres, over the past years.
Daily climate in December for Saint Helier
Click on a specific day in December for detailed info on the typical weather on that day in Saint Helier. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Saint Helier
Have you been to Saint Helier in December?
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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.
Or check out the climate of Saint Helier for all months at once
