Saint Helier weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Fair
Best time to visit: June – September
What is the weather like in Saint Helier in October?
In October, Saint Helier is cool: daytime highs average 16 °C, and nights cool down to about 13 °C. The sea averages 16.2 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. It rains often – on about 15 days, adding up to 95 mm. It is often windy, with gusts of around 29 km/h. All in all, October is a so-so month for a holiday in Saint Helier.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 77 | 47 | 27 |
| Day | 18° | 16° | 12° |
| Night | 15° | 13° | 10° |
| Sea | 18° | 16° | 14° |
| Sun | 6 h | 4 h | 3 h |
| Rain days | 10 | 15 | 16 |
More details for October
- Daylight
- 10 h 53 min07:27 – 18:21
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 29 km/haverage daily peakAll months
- Cloud cover
- 71 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Jersey
How the score comes together
- Temperatureweight 50 %75 %
- Sunshineweight 20 %12 %
- Few rainy daysweight 30 %23 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
- Windproof jacket
Saint Helier in October: quick answers
Is Saint Helier hot in October?
No. In October, Saint Helier is cool: daytime highs average 16 °C and nights drop to about 13 °C.
Can you swim in Saint Helier in October?
Only if you don't mind cold water: in October the sea averages just 16.2 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Saint Helier in October?
It rains often – on about 15 days, adding up to 95 mm.
Saint Helier month by month
The whole year in Saint HelierAll destinations: JerseyWhere to go in OctoberSea temperature in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences