Castlereagh Weather Year-Round — Best Time to Visit
Castlereagh, United Kingdom has cool weather year-round. The best time to visit is June (score: 68/100). Annual average high: 12.2°C, total rainfall: 909mm.
When is the best time to visit Castlereagh?
68
June is the best month to visit Castlereagh with a travel score of 68/100 (Good).
Expect highs of 16.1°C, 13 rain days, and 10.7 hours of daily sunshine.
View June weather details →Travel Score by Month
39
Jan
45
Feb
50
Mar
59
Apr
63
May
68
Jun
67
Jul
66
Aug
62
Sep
52
Oct
45
Nov
40
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Castlereagh each month?
12.2°C
Avg High
7.5°C
Avg Low
909mm
Annual Rain
How much rain does Castlereagh get?
Castlereagh receives 909mm of rain annually. The wettest month is typically October with 92mm, while April is the driest.
What is the weather like each month in Castlereagh?
January
39
7°C
Low: 4°C
13 rain days
Poor
February
45
8°C
Low: 4°C
12 rain days
Mixed
March
50
9°C
Low: 4°C
13 rain days
Mixed
April
59
11°C
Low: 6°C
12 rain days
Mixed
May
63
14°C
Low: 8°C
14 rain days
Good
June
Best time to visit68
16°C
Low: 11°C
13 rain days
Good
July
67
18°C
Low: 12°C
14 rain days
Good
August
66
18°C
Low: 12°C
14 rain days
Good
September
62
16°C
Low: 11°C
12 rain days
Good
October
52
13°C
Low: 9°C
13 rain days
Mixed
November
45
10°C
Low: 6°C
13 rain days
Mixed
December
40
8°C
Low: 4°C
13 rain days
Poor
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Data based on 1994–2024 averages · Last updated: 2024-12-31