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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Harrow on the Hill, United Kingdom, is another chilly winter month, with an average temperature ranging between min 1.9°C (35.4°F) and max 6.7°C (44.1°F). The coldest period tends to be January, when average temperatures fluctuate between a high of 6.7°C (44.1°F) and a low of 1.9°C (35.4°F). Weather in January »
Weather in February
February, the last month of the winter in Harrow on the Hill, is another chilly month, with temperature in the range of an average low of 2.5°C (36.5°F) and an average high of 7.5°C (45.5°F). The arrival of February sees a recorded average high-temperature of a still chilly 7.5°C (45.5°F), showing little divergence from the previous month's conditions. Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Harrow on the Hill, United Kingdom, with an average temperature fluctuating between 3.3°C (37.9°F) and 10.4°C (50.7°F). Upon the beginning of March, Harrow on the Hill's high-temperatures register at a fresh 10.4°C (50.7°F), closely mirroring the preceding month. Weather in March »
Weather in April
April in Harrow on the Hill, United Kingdom, is a mild spring month, with an average temperature fluctuating between 14.2°C (57.6°F) and 5.4°C (41.7°F). Harrow on the Hill in April experiences a slight uptick in the average high-temperature, adjusting from March's cool 10.4°C (50.7°F) to a refreshing 14.2°C (57.6°F). Weather in April »
Weather in May
May, the last month of the spring in Harrow on the Hill, is an enjoyable month, with an average temperature fluctuating between 16.5°C (61.7°F) and 7.9°C (46.2°F). May observes an average high-temperature of a still refreshing 16.5°C (61.7°F), marking an insignificant difference from April's 14.2°C (57.6°F). Weather in May »
Weather in June
The first month of the summer, June, is still a refreshing month in Harrow on the Hill, United Kingdom, with an average temperature varying between 10.8°C (51.4°F) and 19.5°C (67.1°F). In June, the average high-temperature marginally rises from a refreshing 16.5°C (61.7°F) in May to a still enjoyable 19.5°C (67.1°F). Weather in June »
Weather in July
July in Harrow on the Hill, United Kingdom, is a pleasant summer month, with an average temperature ranging between min 13.2°C (55.8°F) and max 21.8°C (71.2°F). July, characterized by an average high temperature of 21.8°C (71.2°F) and a low temperature of 13.2°C (55.8°F), is generally the warmest month. Weather in July »
Weather in August
The last month of the summer, August, is also an agreeable month in Harrow on the Hill, United Kingdom, with an average temperature ranging between min 13.7°C (56.7°F) and max 21.6°C (70.9°F). As August takes its course, Harrow on the Hill's average high-temperature registers at a still pleasant 21.6°C (70.9°F), closely aligning with the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Harrow on the Hill, is still a refreshing month, with temperature in the range of an average low of 11.2°C (52.2°F) and an average high of 18.8°C (65.8°F). As September takes its course, Harrow on the Hill's average high-temperature registers at an enjoyable 18.8°C (65.8°F), closely aligning with the preceding month. Weather in September »
Weather in October
October, the same as September, in Harrow on the Hill, United Kingdom, is another refreshing autumn month, with an average temperature varying between 15°C (59°F) and 8.9°C (48°F). October is characterized by a mild reduction in the average high-temperature, from a comfortable 18.8°C (65.8°F) in September to a moderate 15°C (59°F). Weather in October »
Weather in November
November, the last month of the autumn in Harrow on the Hill, is another cool month, with an average temperature varying between 10.2°C (50.4°F) and 5.6°C (42.1°F). Harrow on the Hill's weather subtly changes with the onset of November, barely falling from a refreshing 15°C (59°F) in October to a cool 10.2°C (50.4°F). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Harrow on the Hill, United Kingdom, with an average temperature ranging between min 3.3°C (37.9°F) and max 7.6°C (45.7°F). The transition into December is marked with an average high-temperature of a chilly 7.6°C (45.7°F), showing an insignificant shift from November's 10.2°C (50.4°F). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Harrow on the Hill?
January proves to be the coldest month, recording an average maximum temperature of 6.7°C (44.1°F) and a minimum temperature of 1.9°C (35.4°F).
What is the driest month in Harrow on the Hill?
The month with the least rainfall in Harrow on the Hill is January, when the rain falls for 11 days and typically collects 19mm (0.75") of precipitation.
How many days does it rain in Harrow on the Hill?
In Harrow on the Hill, during the entire year, the rain falls for 165.8 days and collects up to 345mm (13.58") of precipitation.
When does it snow in Harrow on the Hill?
Months with snowfall in Harrow on the Hill are January through March, November and December.
How much does it snow in Harrow on the Hill?
In Harrow on the Hill, during the entire year, snow falls for 5.5 days and aggregates up to 40mm (1.57") of snow.
What is the month with the lowest UV index in Harrow on the Hill?
The months with the lowest UV index in Harrow on the Hill are January, February, November and December, with an average maximum UV index of 2.
What is the snowiest month in Harrow on the Hill?
The month with the most snowfall in Harrow on the Hill is February, when snow falls for 2.1 days and typically aggregates up to 16mm (0.63") of snow.
What is the month with the least sunshine in Harrow on the Hill?
The month with the least sunshine is February, with an average of 3.7h of sunshine.
When it does not snow in Harrow on the Hill?
In Harrow on the Hill, United Kingdom, snow does not fall in April through October.
What is the rainiest month in Harrow on the Hill?
June is the month with the most rainfall. Rain falls for 17.4 days and accumulates 46mm (1.81") of precipitation.
When are the longest days in Harrow on the Hill?
June has the longest days of the year in Harrow on the Hill, with an average of 16h and 36min of daylight.
What is the month with the highest UV index in Harrow on the Hill?
June and July, with an average maximum UV index of 5, are months with the highest UV index.
What is the warmest month in Harrow on the Hill?
July, with its high-temperature average of 21.8°C (71.2°F) and a low-temperature average of 13.2°C (55.8°F), is the warmest month in Harrow on the Hill.
What are the least humid months in Harrow on the Hill?
The months with the lowest humidity are July and August, with an average relative humidity of 74%.
What is the month with the most sunshine in Harrow on the Hill?
The months with the most sunshine are July and August, with an average of 8h of sunshine.
When is Daylight Saving Time (DST) in Harrow on the Hill?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Harrow on the Hill, United Kingdom, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to BST.
What is the most humid month in Harrow on the Hill?
December is the most humid month, with an average relative humidity of 89%.
What is the month with the shortest days in Harrow on the Hill?
With an average of 7h and 54min of daylight, December has the shortest days of the year in Harrow on the Hill.
Average temperature
Harrow on the Hill, United Kingdom
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (6.7°C).
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (1.9°C).
Average pressure
Harrow on the Hill, United Kingdom
- Average pressure in January:
1014.5mbar - Average pressure in February:
1013.8mbar - Average pressure in March:
1015.5mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1016.8mbar - Average pressure in June:
1016.2mbar
- Average pressure in July:
1015.3mbar - Average pressure in August:
1014.8mbar - Average pressure in September:
1016.9mbar - Average pressure in October:
1015.1mbar - Average pressure in November:
1010.5mbar - Average pressure in December:
1014.4mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed
Harrow on the Hill, United Kingdom
- Average wind speed in January:
16.8km/h - Average wind speed in February:
17.6km/h - Average wind speed in March:
16.1km/h - Average wind speed in April:
13.5km/h - Average wind speed in May:
13.5km/h - Average wind speed in June:
13km/h
- Average wind speed in July:
12.7km/h - Average wind speed in August:
12.9km/h - Average wind speed in September:
12.8km/h - Average wind speed in October:
14.6km/h - Average wind speed in November:
15.8km/h - Average wind speed in December:
17.3km/h
The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity
Harrow on the Hill, United Kingdom
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall
Harrow on the Hill, United Kingdom
The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is January (19mm).
Average rainfall days
Harrow on the Hill, United Kingdom
- Average rainfall days in January:
11 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
18.4 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
11 days - Average rainfall days in December:
12.2 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is February (10.8 days).
Average snowfall
Harrow on the Hill, United Kingdom
The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Harrow on the Hill, United Kingdom
- Average snowfall days in January:
1.8 days - Average snowfall days in February:
2.1 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.6 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Harrow on the Hill, United Kingdom
- Average daylight in January:
8h and 2min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 4min - Average daylight in June:
16h and 4min
- Average daylight in July:
16h and 1min - Average daylight in August:
14h and 4min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 4min - Average daylight in November:
8h and 5min - Average daylight in December:
7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 4min - Average sunshine in May:
7h and 3min - Average sunshine in June:
7h and 3min
- Average sunshine in July:
8h and 0min - Average sunshine in August:
8h and 0min - Average sunshine in September:
7h and 1min - Average sunshine in October:
4h and 4min - Average sunshine in November:
4h and 1min - Average sunshine in December:
4h and 2min
The months with the most sunshine are July and August (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days
Harrow on the Hill, United Kingdom
- Average sunshine days in January:
16 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
9.7 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
10.3 days - Average sunshine days in September:
14.1 days - Average sunshine days in October:
14.9 days - Average sunshine days in November:
16 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is December (16.3 days).
The month with the least sunshine days is July (9.3 days).
Average UV index
Harrow on the Hill, United Kingdom
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Harrow on the Hill, United Kingdom
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are April and September (Cloud cover 49).
Average visibility
Harrow on the Hill, United Kingdom
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Harrow on the Hill, United Kingdom
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