Saint Helier
9 to 18°C
temperature
2592 hours
sunshine per day
442 mm
rain
186 days
dry
179 days
rain
0 days
snow

Climate of Saint Helier

Saint Helier has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Saint Helier is 13° degrees and there is about 443 mm of rain in a year. It is dry for 149 days a year with an average humidity of 80% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 9°C and 18°C
  • Night:the average nighttime temperature is between 7°C and 17°C
  • Sea temperature: the sea temperature is between 9°C and 19°C
  • Rain: it rains 179 days and there is a total of approximately 442 mm rainfall
  • Sun hours: throughout the year there are 2592 sun hours
Maximum temperature: between 9°C and 18°C
Warmest month: 18°C in July
Coldest month: 9°C in January
Night temperature: between 7°C and 17°C
Sea temperature: between 9°C and 19°C
Dry days: 186 days
Days with rain: 179 days
Days with snow: 0 days
Total rain sum: 442 mm
Hours of sunshine: 2592 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Saint Helier.

Precipitation graph

This graph shows the average amount of rainfall per month for Saint Helier.

Climate table of Saint Helier

In this climate table you can see at a glance what the average weather per month is for Saint Helier. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Saint Helier might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 9 9 10 11 13 16 18 18 18 16 13 11
Night temp. (°C) 7 7 8 9 11 14 16 17 16 14 11 9
Water temp. (°C) 10 9 10 12 12 15 19 18 19 16 14 11
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 51 41 31 23 25 24 25 35 28 42 61 56
Days with rain 20 17 15 12 12 11 12 12 12 16 20 20
Dry days 11 11 16 18 19 19 19 19 18 15 10 11
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 4 7 10 9 10 10 10 9 5 4 4
Wind force (Bft) 5 5 4 4 4 4 4 4 4 4 5 5
UV-index 2 2 3 3 4 5 5 5 5 4 3 3

Best time to visit Saint Helier

The best time to visit Saint Helier on Jersey is from July through September. In this period you have a pleasant temperature and almost no precipitation. The highest average temperature in Saint Helier is 18°C in July and the lowest is 9°C in January. The highest water temperature is 19°C and at its coldest the water is 9°C.

Climate of Saint Helier by month

What is the average climate in a given month for Saint Helier? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Saint Helier weather experiences

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