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Climate Lab — Viana do Castelo, Portugal

Climate Lab·

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

MetricJanFebMarAprMayJunJulAugSepOctNovDecYear
Temperature
Daily high°C
14
16
17
19
21
23
26
25
23
21
18
15
20
Daily mean°C
11
13
13
15
16
18
21
21
20
17
15
12
16
Daily low°C
6
9
9
11
12
15
17
17
16
14
11
7
12
Thermal comfort
High feels°C
17
21
22
24
25
29
33
31
28
27
22
17
25
Mean feels°C
6
10
10
14
16
20
24
25
19
14
10
7
15
Low feels°C
-2
-1
1
5
7
13
15
15
11
7
4
-1
6
Humidity
Humidity%
84
82
78
76
76
79
75
75
79
85
83
84
80
Dewpoint°C
6.4
8.8
8.7
10.9
11.5
14.5
16.1
16.3
15.8
14.9
11.3
8.0
11.9
Precipitation
Rainfallmm
194
67
102
101
48
39
16
8
95
304
107
185
1267
Rain days≥1mm
13
10
14
10
9
8
5
4
10
19
12
19
133
Wind
Wind avgm/s
3.5
3.1
3.6
3.4
3.0
3.4
3.5
3.5
2.9
3.4
3.3
3.9
3.4
Windiest hoursm/s
8.1
6.6
7.7
6.9
6.4
6.5
6.4
6.2
6.5
7.9
7.8
7.1
7.0
Sun & UV
Sunshinehrs/day
7.0
8.0
8.8
10.4
11.3
11.6
12.8
11.7
9.0
7.3
6.3
5.7
9.2
Clear skyindex
44%
50%
45%
49%
52%
54%
76%
66%
50%
41%
43%
38%
51%
UV indexmax avg
1.3
2.2
3.6
5.1
6.4
7.1
8.3
7.3
5.0
2.6
1.8
1.2
4.3
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High

How winter feel compares

Compared across Portugal

Viana do Castelo: 1.1 °C. Typical range in Portugal: 0.5–3.0 °C. Low anchor: Bragança, -3.3 °C. High anchor: Funchal, 9.8 °C.

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