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Cardiff Climate Guide
United Kingdom
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Maximum Daytime Temperature (°C)
Minimum Night-time Temperature (°C)
7
7 °C (45°F) Maximum Daytime Temperature in January
7
7 °C (45°F) Maximum Daytime Temperature in February
10
10 °C (50°F) Maximum Daytime Temperature in March
12
12 °C (54°F) Maximum Daytime Temperature in April
16
16 °C (61°F) Maximum Daytime Temperature in May
19
19 °C (66°F) Maximum Daytime Temperature in June
20
20 °C (68°F) Maximum Daytime Temperature in July
20
20 °C (68°F) Maximum Daytime Temperature in August
18
18 °C (64°F) Maximum Daytime Temperature in September
14
14 °C (57°F) Maximum Daytime Temperature in October
10
10 °C (50°F) Maximum Daytime Temperature in November
8
8 °C (46°F) Maximum Daytime Temperature in December
J F M A M J J A S O N D
2
2 °C (36°F) Minimum Night-time Temperature in January
2
2 °C (36°F) Minimum Night-time Temperature in February
3
3 °C (37°F) Minimum Night-time Temperature in March
4
4 °C (39°F) Minimum Night-time Temperature in April
7
7 °C (45°F) Minimum Night-time Temperature in May
10
10 °C (50°F) Minimum Night-time Temperature in June
12
12 °C (54°F) Minimum Night-time Temperature in July
12
12 °C (54°F) Minimum Night-time Temperature in August
10
10 °C (50°F) Minimum Night-time Temperature in September
8
8 °C (46°F) Minimum Night-time Temperature in October
5
5 °C (41°F) Minimum Night-time Temperature in November
3
3 °C (37°F) Minimum Night-time Temperature in December
J F M A M J J A S O N D
Hours of Sunshine
Hours of Daylight
2
2 Hours of Sunshine (20% of Daylight Hours) in January
3
3 Hours of Sunshine (25% of Daylight Hours) in February
4
4 Hours of Sunshine (31% of Daylight Hours) in March
5
5 Hours of Sunshine (39% of Daylight Hours) in April
6
6 Hours of Sunshine (41% of Daylight Hours) in May
7
7 Hours of Sunshine (41% of Daylight Hours) in June
6
6 Hours of Sunshine (39% of Daylight Hours) in July
6
6 Hours of Sunshine (41% of Daylight Hours) in August
5
5 Hours of Sunshine (38% of Daylight Hours) in September
3
3 Hours of Sunshine (29% of Daylight Hours) in October
2
2 Hours of Sunshine (26% of Daylight Hours) in November
2
2 Hours of Sunshine (19% of Daylight Hours) in December
J F M A M J J A S O N D
8
8 Hours of Daylight in January
10
10 Hours of Daylight in February
12
12 Hours of Daylight in March
14
14 Hours of Daylight in April
16
16 Hours of Daylight in May
17
17 Hours of Daylight in June
16
16 Hours of Daylight in July
15
15 Hours of Daylight in August
13
13 Hours of Daylight in September
11
11 Hours of Daylight in October
9
9 Hours of Daylight in November
8
8 Hours of Daylight in December
J F M A M J J A S O N D
Days with some Rain
Monthly Rainfall (mm)
19
19 Days with some Rain in January
14
14 Days with some Rain in February
17
17 Days with some Rain in March
14
14 Days with some Rain in April
14
14 Days with some Rain in May
13
13 Days with some Rain in June
12
12 Days with some Rain in July
14
14 Days with some Rain in August
14
14 Days with some Rain in September
17
17 Days with some Rain in October
18
18 Days with some Rain in November
18
18 Days with some Rain in December
J F M A M J J A S O N D
104
104 mm (4.1 inches) Monthly Rainfall in January
76
76 mm (3.0 inches) Monthly Rainfall in February
79
79 mm (3.1 inches) Monthly Rainfall in March
60
60 mm (2.4 inches) Monthly Rainfall in April
65
65 mm (2.6 inches) Monthly Rainfall in May
65
65 mm (2.6 inches) Monthly Rainfall in June
66
66 mm (2.6 inches) Monthly Rainfall in July
81
81 mm (3.2 inches) Monthly Rainfall in August
91
91 mm (3.6 inches) Monthly Rainfall in September
101
101 mm (4.0 inches) Monthly Rainfall in October
105
105 mm (4.1 inches) Monthly Rainfall in November
109
109 mm (4.3 inches) Monthly Rainfall in December
J F M A M J J A S O N D
Heat & Humidity / Chance of Frost
UV Index (Maximum)
14
14 Days with Frost in January
13
13 Days with Frost in February
13
13 Days with Frost in March
10
10 Days with Frost in April
5
5 Days with Frost in May
-
No Heat & Humidity or Frost in June
-
No Heat & Humidity or Frost in July
-
No Heat & Humidity or Frost in August
-
No Heat & Humidity or Frost in September
4
4 Days with Frost in October
10
10 Days with Frost in November
13
13 Days with Frost in December
J F M A M J J A S O N D
1
UV 1 (Low) in January
1
UV 1 (Low) in February
3
UV 3 (Moderate) in March
4
UV 4 (Moderate) in April
5
UV 5 (Moderate) in May
6
UV 6 (High) in June
6
UV 6 (High) in July
6
UV 6 (High) in August
4
UV 4 (Moderate) in September
2
UV 2 (Low) in October
1
UV 1 (Low) in November
0
UV 0 (None) in December
J F M A M J J A S O N D
Sea Temperature (°C)
10
10 °C (50°F) Sea Temperature in January
9
9 °C (48°F) Sea Temperature in February
9
9 °C (48°F) Sea Temperature in March
10
10 °C (50°F) Sea Temperature in April
11
11 °C (52°F) Sea Temperature in May
13
13 °C (55°F) Sea Temperature in June
15
15 °C (59°F) Sea Temperature in July
16
16 °C (61°F) Sea Temperature in August
16
16 °C (61°F) Sea Temperature in September
15
15 °C (59°F) Sea Temperature in October
13
13 °C (55°F) Sea Temperature in November
11
11 °C (52°F) Sea Temperature in December
J F M A M J J A S O N D
Cardiff Climate Guide (Historical Weather Averages), United Kingdom
Elev: 0 m   Long: 003°10'W   Lat: 51°28'N
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