🇯🇪 Weather in Saint Helier
Map Overlays:
Hourly Forecast for Saint Helier
00:00
20°
9%
01:00
20°
9%
02:00
20°
10%
03:00
20°
26%
04:00
20°
11%
05:00
20°
23%
06:00
20°
10%
07:00
20°
10%
08:00
20°
9%
09:00
21°
7%
10:00
22°
6%
11:00
23°
4%
12:00
23°
4%
13:00
24°
3%
14:00
24°
3%
15:00
24°
4%
16:00
24°
4%
17:00
23°
4%
18:00
23°
4%
19:00
23°
4%
20:00
23°
4%
21:00
22°
5%
22:00
21°
6%
23:00
21°
6%
14-Day Forecast for Saint Helier
2026-07-09
Sunny
22° /
19°
2026-07-10
Sunny
24° /
20°
2026-07-11
Sunny
23° /
20°
2026-07-12
Partly Cloudy
23° /
18°
2026-07-13
Sunny
21° /
18°
2026-07-14
Sunny
23° /
17°
2026-07-15
Sunny
20° /
18°
Additional Forecasts for Saint Helier
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 126.0 μg/m³
O₃ (Ozone) 98.0 μg/m³
NO₂ (Nitrogen Dioxide) 2.2 μg/m³
SO₂ (Sulphur Dioxide) 0.2 μg/m³
PM2.5 (Fine particles) 7.1 μg/m³
PM10 (Coarse particles) 12.2 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Jersey
Weather in Saint Helier — FAQ
Answers refreshed each request based on current conditions in Saint Helier.
What is the weather like right now in Saint Helier?
Right now in Saint Helier, Jersey the temperature is 21.2°C (feels like 21.2°C), with clear. Relative humidity is 73% and wind is 19.4 km/h.
What is today's high and low temperature in Saint Helier?
Today's forecast high in Saint Helier is 22.4°C and the overnight low is 18.9°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Saint Helier today?
The chance of precipitation in Saint Helier today is 14%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Saint Helier differ from nearby cities?
Even short distances can change temperatures noticeably. Saint Helier's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.