Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
April brings a slight rise in Harrow's average high-temperature, moving from a cool 10.4°C (50.7°F) in March to a mild 14.2°C (57.6°F). In the month of April, Harrow experiences an average low-temperature of 5.4°C (41.7°F).Humidity
The average relative humidity in April in Harrow is 78%.Rainfall
In Harrow, United Kingdom, in April, it is raining for 14.8 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, there are 165.8 rainfall days, and 345mm (13.58") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Harrow, the average length of the day in April is 13h and 54min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:35 pm. On the last day of April, in Harrow, United Kingdom, sunrise is at 5:33 am and sunset at 8:23 pm BST.
Sunshine
The average sunshine in April in Harrow is 7.7h.UV index
In Harrow, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: During April, 3 as the daily maximum UV index converts into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Harrow?
What is the average humidity in April in Harrow?
How many days does it rain in April in Harrow?
When it does not snow in Harrow?
Does it snow in Harrow in April?
What is the average length of the day in April in Harrow?
When is the sunrise / sunset in April in Harrow?
How long on average sun shines in April in Harrow?
How high is the UV index in April in Harrow?
Average temperature in April
Harrow, United Kingdom
- Average high temperature in April: 14.2°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 April: 5.4°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 April
Harrow, United Kingdom
- Average pressure in April: 1015.7mbar
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 April
Harrow, United Kingdom
- Average wind speed in April: 13.5km/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 April
Harrow, United Kingdom
- Average humidity in April: 78%
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 April
Harrow, United Kingdom
- Average rainfall in April: 21mm
The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is January (19mm).
Average rainfall days in April
Harrow, United Kingdom
- Average rainfall days in April: 14.8 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 April
Harrow, United Kingdom
- Average snowfall in April: 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 April
Harrow, United Kingdom
- Average snowfall days in April: 0.1 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 April /
Average sunshine in April
Harrow, United Kingdom
- Average daylight in April: 13h 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 April: 7h and 4min
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 April
Harrow, United Kingdom
- Average sunshine days in April: 11.9 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 April
Harrow, United Kingdom
- Average UV index in April: 3
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 April
Harrow, United Kingdom
- Average cloud cover in April: 49
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 April
Harrow, United Kingdom
- Average visibility in April: 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).
