October weather forecast and climate
Saint Helier, Jersey

A shot of the Elizabeth Castle found on Tidal Island in Saint Helier Parish, Jersey
A shot of the Elizabeth Castle found on Tidal Island in Saint Helier Parish, Jersey

What is the temperature in October in Saint Helier?

In Saint Helier, in October, the average high-temperature is 15.7°C (60.3°F), and the average low-temperature is 10.6°C (51.1°F).

How much does it rain in Saint Helier in October?

In Saint Helier, during October, the rain falls for 17 days and regularly aggregates up to 92.2mm (3.6") of precipitation.

What is the sea temperature in October in Saint Helier?

In Saint Helier, in October, the average water temperature is 15°C (59°F). For most, swimming in 15°C (59°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average UV index in October in Saint Helier?

In October, the average UV index in Saint Helier, Jersey, is 2.
Average temperature in October - Saint Helier, Jersey
  • Average high temperature in October: 15.7°C

The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is January (9.5°C).

  • Average low temperature in October: 10.6°C

The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (4°C).

Average rainfall in October - Saint Helier, Jersey
  • Average rainfall in October: 92.2mm

The wettest month (with the highest rainfall) is December (110.5mm).
The driest month (with the lowest rainfall) is July (37mm).

Average rainfall days in October - Saint Helier, Jersey
  • Average rainfall days in October: 17 days

The month with the highest number of rainy days is December (19.5 days).
The month with the lowest number of rainy days is July (9.9 days).

Average sea temperature in October - Saint Helier, Jersey
  • Average sea temperature in October: 15°C

The best month for swimming (with the highest average sea temperature) is August (17°C).
Coldest months (with the lowest average sea temperature) are February and March (9°C).

Average daylight in October / Average sunshine in October - Saint Helier, Jersey
  • Average daylight in October: 10.8h

The month with the longest days is June (Average daylight: 16.2h).
The month with shortest days is December (Average daylight: 8.3h).

  • Average sunshine in October: 4h

Months with most sunshine are May, June, July and August (Average sunshine: 8h).
Months with least sunshine are January and December (Average sunshine: 2).

Average UV index in October - Saint Helier, Jersey
  • Average UV index in October: 2

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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