Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
August
Weather in August
Temperature
As July transitions into August, Harrow records an average high-temperature of a still pleasant 21.6°C (70.9°F), showing a gentle shift from the preceding month. Throughout the August nights, Harrow encounters a low-temperature of 13.7°C (56.7°F).Humidity
July and August, with an average relative humidity of 74%, are the least humid months in Harrow.Rainfall
In Harrow, during August, the rain falls for 16.7 days and regularly aggregates up to 37mm (1.46") of precipitation. Throughout the year, in Harrow, there are 165.8 rainfall days, and 345mm (13.58") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Harrow.Daylight
In Harrow, the average length of the day in August is 14h and 34min.On the first day of August, sunrise is at 5:25 am and sunset at 8:49 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:49 pm BST.
Sunshine
July and August, with an average of 8h of sunshine, are months with the most sunshine in Harrow.UV index
The average daily maximum UV index in August in Harrow is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during August translates into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Harrow in August?
What is the least humid month in Harrow?
What is the average humidity in August in Harrow?
How many days does it rain in August in Harrow?
When it does not snow in Harrow?
How many hours of daylight does Harrow have in August?
When is the sunrise / sunset in August in Harrow?
What is the month with the most sunshine in Harrow?
How long on average sun shines in August in Harrow?
How high is the UV index in August in Harrow?
Average temperature in August
Harrow, United Kingdom
- Average high temperature in August: 21.6°C
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).
- Average low temperature in August: 13.7°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 in August
Harrow, United Kingdom
- Average pressure in August: 1014.8mbar
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 in August
Harrow, United Kingdom
- Average wind speed in August: 12.9km/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 in August
Harrow, United Kingdom
- Average humidity in August: 74%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in August
Harrow, United Kingdom
- Average rainfall in August: 37mm
The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is January (19mm).
Average rainfall days in August
Harrow, United Kingdom
- Average rainfall days in August: 16.7 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 in August
Harrow, United Kingdom
- Average snowfall in August: 0mm
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 in August
Harrow, United Kingdom
- Average snowfall days in August: 0 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 in August /
Average sunshine in August
Harrow, United Kingdom
- Average daylight in August: 14h and 4min
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 August: 8h and 0min
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 in August
Harrow, United Kingdom
- Average sunshine days in August: 10.3 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 in August
Harrow, United Kingdom
- Average UV index in August: 4
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 in August
Harrow, United Kingdom
- Average cloud cover in August: 50
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 in August
Harrow, United Kingdom
- Average visibility in August: 9km
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).
