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Belfast 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
9
9 °C (48°F) Maximum Daytime Temperature in March
11
11 °C (52°F) Maximum Daytime Temperature in April
14
14 °C (57°F) Maximum Daytime Temperature in May
17
17 °C (63°F) Maximum Daytime Temperature in June
18
18 °C (64°F) Maximum Daytime Temperature in July
18
18 °C (64°F) Maximum Daytime Temperature in August
16
16 °C (61°F) Maximum Daytime Temperature in September
13
13 °C (55°F) Maximum Daytime Temperature in October
9
9 °C (48°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
2
2 °C (36°F) Minimum Night-time Temperature in March
4
4 °C (39°F) Minimum Night-time Temperature in April
6
6 °C (43°F) Minimum Night-time Temperature in May
9
9 °C (48°F) Minimum Night-time Temperature in June
11
11 °C (52°F) Minimum Night-time Temperature in July
11
11 °C (52°F) Minimum Night-time Temperature in August
9
9 °C (48°F) Minimum Night-time Temperature in September
7
7 °C (45°F) Minimum Night-time Temperature in October
4
4 °C (39°F) Minimum Night-time Temperature in November
2
2 °C (36°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
2
2 Hours of Sunshine (25% of Daylight Hours) in February
3
3 Hours of Sunshine (28% of Daylight Hours) in March
5
5 Hours of Sunshine (36% of Daylight Hours) in April
6
6 Hours of Sunshine (38% of Daylight Hours) in May
6
6 Hours of Sunshine (34% of Daylight Hours) in June
5
5 Hours of Sunshine (30% of Daylight Hours) in July
5
5 Hours of Sunshine (32% of Daylight Hours) in August
4
4 Hours of Sunshine (30% of Daylight Hours) in September
3
3 Hours of Sunshine (28% of Daylight Hours) in October
2
2 Hours of Sunshine (25% of Daylight Hours) in November
1
1 Hour of Sunshine (18% 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
17
17 Hours of Daylight in July
15
15 Hours of Daylight in August
13
13 Hours of Daylight in September
10
10 Hours of Daylight in October
8
8 Hours of Daylight in November
7
7 Hours of Daylight in December
J F M A M J J A S O N D
Days with some Rain
Monthly Rainfall (mm)
20
20 Days with some Rain in January
15
15 Days with some Rain in February
19
19 Days with some Rain in March
15
15 Days with some Rain in April
16
16 Days with some Rain in May
15
15 Days with some Rain in June
15
15 Days with some Rain in July
17
17 Days with some Rain in August
17
17 Days with some Rain in September
19
19 Days with some Rain in October
19
19 Days with some Rain in November
20
20 Days with some Rain in December
J F M A M J J A S O N D
101
101 mm (4.0 inches) Monthly Rainfall in January
71
71 mm (2.8 inches) Monthly Rainfall in February
78
78 mm (3.1 inches) Monthly Rainfall in March
63
63 mm (2.5 inches) Monthly Rainfall in April
65
65 mm (2.6 inches) Monthly Rainfall in May
68
68 mm (2.7 inches) Monthly Rainfall in June
63
63 mm (2.5 inches) Monthly Rainfall in July
89
89 mm (3.5 inches) Monthly Rainfall in August
94
94 mm (3.7 inches) Monthly Rainfall in September
100
100 mm (3.9 inches) Monthly Rainfall in October
96
96 mm (3.8 inches) Monthly Rainfall in November
94
94 mm (3.7 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)
18
18 Days with Frost in January
16
16 Days with Frost in February
15
15 Days with Frost in March
11
11 Days with Frost in April
6
6 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
12
12 Days with Frost in November
15
15 Days with Frost in December
J F M A M J J A S O N D
0
UV 0 (None) in January
1
UV 1 (Low) in February
2
UV 2 (Low) in March
3
UV 3 (Moderate) in April
5
UV 5 (Moderate) in May
6
UV 6 (High) in June
6
UV 6 (High) in July
5
UV 5 (Moderate) in August
3
UV 3 (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)
8
8 °C (46°F) Sea Temperature in January
7
7 °C (45°F) Sea Temperature in February
7
7 °C (45°F) Sea Temperature in March
8
8 °C (46°F) Sea Temperature in April
10
10 °C (50°F) Sea Temperature in May
12
12 °C (54°F) Sea Temperature in June
14
14 °C (57°F) Sea Temperature in July
15
15 °C (59°F) Sea Temperature in August
14
14 °C (57°F) Sea Temperature in September
13
13 °C (55°F) Sea Temperature in October
12
12 °C (54°F) Sea Temperature in November
10
10 °C (50°F) Sea Temperature in December
J F M A M J J A S O N D
Belfast Climate Guide (Historical Weather Averages), United Kingdom
Elev: 0 m   Long: 005°54'W   Lat: 54°35'N
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