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 sea temperature 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
Weather in April
Temperature
With the onset of April, the average high-temperature in Cardiff stands at a cool 12.3°C (54.1°F), closely aligned with March's 9.8°C (49.6°F). During the month of April, an average temperature of 5.9°C (42.6°F) is noted during the nights.Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 81%.Rainfall
April is the month with the least rainfall. Rain falls for 9.1 days and accumulates 12mm (0.47") of precipitation.Snowfall
March through October are months without snowfall.Sea temperature
In Cardiff, the average seawater temperature in April is 9.9°C (49.8°F).Note: You can swim in 9.9°C (49.8°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.
Daylight
In April, the average length of the day in Cardiff is 13h and 54min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:46 pm. On the last day of April, in Cardiff, sunrise is at 5:45 am and sunset at 8:34 pm BST.
Sunshine
In April, the average sunshine is 8.1h.UV index
In Cardiff, United Kingdom, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In April, a daily maximum UV index of 3 leads to the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Cardiff in April?
What are the least humid months in Cardiff?
What is the average humidity in April in Cardiff?
What is the driest month in Cardiff?
How much does it rain in Cardiff in April?
When it does not snow in Cardiff?
What is the water temperature in April in Cardiff?
How many hours of daylight does Cardiff have in April?
What time are sunrise and sunset in April in Cardiff?
How many hours of sunshine does Cardiff have in April?
What is the UV index reading in April in Cardiff?
Average temperature in April
Cardiff, United Kingdom
- Average high temperature in April: 12.3°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in April: 5.9°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in April
Cardiff, United Kingdom
- Average pressure in April: 1015.4mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in April
Cardiff, United Kingdom
- Average wind speed in April: 16.2km/h
The windiest month (with the highest average wind speed) is February (22.3km/h).
The calmest months (with the lowest average wind speed) are June and July (15.2km/h).
Average humidity in April
Cardiff, United Kingdom
- Average humidity in April: 81%
The months with the highest relative humidity are November and December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in April
Cardiff, United Kingdom
- Average rainfall in April: 12mm
The wettest months (with the highest rainfall) are August and November (31mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in April
Cardiff, United Kingdom
- Average rainfall days in April: 9.1 days
The month with the highest number of rainy days is November (13.5 days).
The months with the least rainy days are February and April (9.1 days).
Average snowfall in April
Cardiff, United Kingdom
- Average snowfall in April: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in April
Cardiff, United Kingdom
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in April
Cardiff, United Kingdom
- Average sea temperature in April: 9.9°C
The best months for swimming (with the highest average sea temperature) are August and September (16.6°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in April /
Average sunshine in April
Cardiff, 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: 8h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in April
Cardiff, United Kingdom
- Average sunshine days in April: 19.2 days
The month with the most sunshine days is April (19.2 days).
The month with the least sunshine days is November (13.7 days).
Average UV index in April
Cardiff, United Kingdom
- Average UV index in April: 3
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Cardiff, United Kingdom
- Average cloud cover in April: 46
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in April
Cardiff, United Kingdom
- Average visibility in April: 9km
The months with the highest visibility are February, March and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October and November (9km).
Cardiff, United Kingdom
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