Cardiff
United Kingdom
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Cardiff, United Kingdom

April in Cardiff, United Kingdom, is a moderate spring month, with average temperature fluctuating between 5.2°C (41.4°F) and 13.8°C (56.8°F).

Temperature

In April, the average high-temperature is relatively the same as in March - a moderate 13.8°C (56.8°F). The average low-temperature, in Cardiff, is 5.2°C (41.4°F).

Rainfall

In Cardiff, in April, it is raining for 11.1 days, with typically 68.6mm (2.7") of accumulated precipitation. In Cardiff, during the entire year, the rain falls for 148.8 days and collects up to 1152.1mm (45.4") of precipitation.

Sea temperature

In April, the average sea temperature is 9.9°C (49.8°F).
Note: Swimming in 9.9°C (49.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Cardiff, the average length of the day is 13.9h.

Sunshine

The average sunshine in Cardiff is 5.7h.

UV index

In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in April in Cardiff?

The average high-temperature, in April, in Cardiff, is 13.8°C (56.8°F), while the average low-temperature is 5.2°C (41.4°F).

How much does it rain in Cardiff in April?

In Cardiff, United Kingdom, in April, it is raining for 11.1 days, with typically 68.6mm (2.7") of accumulated precipitation.

What is the water temperature in April in Cardiff?

In Cardiff, United Kingdom, the average seawater temperature in April is 9.9°C (49.8°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in April in Cardiff?

In April, the average length of the day is 13.9h.

How many hours of sunshine does Cardiff have in April?

In Cardiff, the average sunshine in April is 5.7h.

What is the UV index reading in April in Cardiff?

The average daily maximum UV index in April in Cardiff, United Kingdom, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in April - Cardiff, United Kingdom
  • Average high temperature in April: 13.8°C

The warmest month (with the highest average high temperature) is July (21.7°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in April: 5.2°C

The month with the highest average low temperature is July (13.1°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).

Average rainfall in April - Cardiff, United Kingdom
  • Average rainfall in April: 68.6mm

The wettest month (with the highest rainfall) is October (133.5mm).
The driest month (with the lowest rainfall) is June (66.6mm).

Average rainfall days in April - Cardiff, United Kingdom
  • Average rainfall days in April: 11.1 days

The month with the highest number of rainy days is January (15.7 days).
The month with the lowest number of rainy days is June (10.1 days).

Average sea temperature in April - Cardiff, United Kingdom
  • Average sea temperature in April: 9.9°C

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: 13.9h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 7.9h).

  • Average sunshine in April: 5.7h

The month with most sunshine is July (Average sunshine: 6.4h).
The month with least sunshine is December (Average sunshine: 1.6h).

Average UV index in April - Cardiff, United Kingdom
  • Average UV index in April: 4

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 0).