Saint Helier in Winter
In winter (December, January and February), Saint Helier sees average daytime highs around 9°C and overnight lows near 7°C, with 329 mm of precipitation over about 45 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Over the season highs ease from about 11°C in early December to 9°C by late February. The sky is clear or mostly clear about 14% of the time across winter, and the air most often feels dry.
Winter is Saint Helier's weakest season of the year to visit on our travel score. For the whole year in context, see Saint Helier's year-round climate.
- Avg daytime high
- 9°C
- coldest season of the year
- Avg overnight low
- 7°C
- Precipitation
- 329 mm
- 45 wet days
- Avg wind
- 30 km/h
- Travel score
- 1.6
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Saint Helier in Winter
Over the season highs ease from about 11°C in early December to 9°C by late February.
A typical winter day in Saint Helier reaches about 9°C and drops to 7°C overnight. The warmest of the three months is December, the coolest February.
Saint Helier weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 9° / 7° | 110 | 15.8 | 8.5 | 1.5 |
| Feb | 9° / 7° | 81 | 12.9 | 9.8 | 1.4 |
| Mar | 9° / 8° | 69 | 12.4 | 11.6 | 1.9 |
| Apr | 11° / 9° | 57 | 10.5 | 13.4 | 2.7 |
| May | 13° / 11° | 53 | 9.4 | 15 | 3.8 |
| Jun | 16° / 14° | 50 | 8.7 | 15.9 | 5.0 |
| Jul | 18° / 16° | 48 | 9.1 | 15.6 | 6.0 |
| Aug | 18° / 17° | 63 | 9.8 | 14.2 | 6.1 |
| Sep | 17° / 16° | 77 | 11 | 12.4 | 5.5 |
| Oct | 15° / 13° | 122 | 15.5 | 10.5 | 4.0 |
| Nov | 12° / 10° | 132 | 17.6 | 8.9 | 2.7 |
| Dec | 10° / 8° | 138 | 16.7 | 8.1 | 1.9 |
Cloud cover in Winter
The sky is clear or mostly clear about 14% of the time across winter.
Chance of precipitation in Winter
Saint Helier gets around 329 mm of rain and snow over 45 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 30 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 8 h 18 min in early December to 10 h 36 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 1.2 kWh/m².
Hazard calendar for Saint Helier
In winter, Saint Helier overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Saint Helier's rainy season runs August–March, when most of the year's rain falls.
Is winter a good time to visit Saint Helier?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Saint Helier.
What to pack for Saint Helier in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Saint Helier sees daytime highs around 9°C and nights near 7°C. Pack a warm layer, rain gear and a windbreaker. About 45 days see rain.
Sea temperature near Saint Helier in Winter
The nearest coast averages about 10°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 18°C and coldest in February near 9°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 10 | 9 | 9 | 10 | 12 | 15 | 17 | 18 | 18 | 16 | 14 | 11 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 9 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 12 | Bracing |
| Jun | 15 | Bracing |
| Jul | 17 | Cool |
| Aug | 18 | Cool |
| Sep | 18 | Cool |
| Oct | 16 | Cool |
| Nov | 14 | Bracing |
| Dec | 11 | Bracing |
UV index in Saint Helier in Winter
Clear-sky midday UV across winter averages around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Saint Helier peaks around August 13 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 6 | 7 | 6 | 7 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 6 | High |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Saint Helier?
Saint Helier sits at 49.2°N, 2.1°W, 11 m above sea level, in Jersey. The nearest listed city is Saint Peter Port, 43 km away.
Topography around Saint Helier
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Saint Helier.
Within 3 km, the terrain around Saint Helier has only modest variations in elevation — a maximum elevation change of 100 m around an average of 31 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 137 m; within 80 km, significant variations in elevation — a maximum elevation change of 290 m.
The land around Saint Helier is covered by water (32%), trees (22%) and artificial surfaces (21%) within 3 km, water (85%) within 16 km, and water (68%) within 80 km.
Jersey travel facts
- Power plugs
- Type G
- 230 V · 50 Hz
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Saint Helier (49.188°, -2.1049°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.