Harrow Weather Year-Round — Best Time to Visit
Harrow, United Kingdom has cool weather year-round. The best time to visit is July (score: 79/100). Annual average high: 14°C, total rainfall: 656mm.
When is the best time to visit Harrow?
79
July is the best month to visit Harrow with a travel score of 79/100 (Good).
Expect highs of 21.4°C, 10 rain days, and 11.3 hours of daily sunshine.
View July weather details →Travel Score by Month
42
Jan
48
Feb
55
Mar
65
Apr
71
May
76
Jun
79
Jul
78
Aug
72
Sep
57
Oct
49
Nov
43
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Harrow each month?
14°C
Avg High
7.3°C
Avg Low
656mm
Annual Rain
How much rain does Harrow get?
Harrow receives 656mm of rain annually. The wettest month is typically October with 64mm, while April is the driest.
What is the weather like each month in Harrow?
January
42
7°C
Low: 2°C
11 rain days
Mixed
February
48
8°C
Low: 2°C
10 rain days
Mixed
March
55
10°C
Low: 3°C
10 rain days
Mixed
April
65
13°C
Low: 5°C
10 rain days
Good
May
71
16°C
Low: 8°C
10 rain days
Good
June
76
19°C
Low: 11°C
9 rain days
Good
July
Best time to visit79
21°C
Low: 13°C
10 rain days
Good
August
78
21°C
Low: 13°C
10 rain days
Good
September
72
19°C
Low: 11°C
9 rain days
Good
October
57
15°C
Low: 9°C
11 rain days
Mixed
November
49
10°C
Low: 5°C
11 rain days
Mixed
December
43
8°C
Low: 3°C
11 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31