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Climate Lab — Saint Helier, Jersey

Climate Lab·

Monthly climate metrics across temperature, precipitation, wind, and UV.

MetricJanFebMarAprMayJunJulAugSepOctNovDecYear
Temperature
Daily high°C
11
11
11
13
15
18
20
20
20
17
14
12
15
Daily mean°C
9
9
10
11
13
15
17
18
17
15
13
10
13
Daily low°C
6
8
7
9
11
14
15
16
15
14
9
7
11
Thermal comfort
High feels°C
4
6
11
15
20
24
26
25
22
17
11
4
15
Mean feels°C
-5
-4
0
5
12
15
17
17
14
9
3
-3
7
Low feels°C
-11
-12
-8
-5
0
7
9
9
5
1
-7
-11
-2
Humidity
Humidity%
82
82
81
79
81
82
83
83
81
82
81
82
81
Dewpoint°C
4.6
6.4
6.6
7.5
10.4
12.6
14.3
15.1
13.6
11.9
9.4
6.3
9.9
Precipitation
Rainfallmm
109
73
97
54
34
62
45
51
83
138
79
181
1005
Rain days≥1mm
17
13
15
7
11
13
13
10
11
17
16
20
163
Wind
Wind avgm/s
7.7
8.7
6.7
6.2
5.5
5.3
5.5
5.8
5.1
7.3
6.3
8.3
6.5
Wind gustsm/s
14.1
14.3
13.4
12.1
9.6
10.1
10.2
10.7
11.9
13.0
13.7
14.2
12.3
Sun & UV
Sunshinehrs/day
4.0
5.6
8.0
10.7
11.4
11.7
11.5
10.2
8.7
6.6
4.9
3.0
8.0
Clear skyindex
24%
28%
44%
43%
40%
43%
51%
44%
37%
36%
32%
20%
37%
UV indexmax avg
0.6
1.1
2.2
3.8
5.4
6.0
5.7
5.3
3.7
2.0
0.9
0.5
3.1
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High

How winter feel compares

Compared worldwide

Saint Helier: -8.9 °C. Typical range: -9.1–15.9 °C. Low anchor: Toronto, -18.1 °C. High anchor: Singapore, 25.2 °C.

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