April weather forecastSan Isidro, Spain

April

Weather in April

April, like March, in San Isidro, Spain, is another refreshing spring month, with an average temperature ranging between min 12°C (53.6°F) and max 19°C (66.2°F).

Temperature

As San Isidro welcomes April, the average high-temperature stabilizes at a still comfortable 19°C (66.2°F), maintaining alignment with March's conditions. Throughout April, San Isidro anticipates an average low-temperature of 12°C (53.6°F).

Rainfall

In April, the rain falls for 4 days. Throughout April, 34mm (1.34") of precipitation is accumulated. In San Isidro, Spain, during the entire year, the rain falls for 46 days and collects up to 431mm (16.97") of precipitation.

Sea temperature

The months with the coldest seawater are January through April, with an average sea temperature of 19°C (66.2°F).
Note: When the surface water temperature is 19°C (66.2°F), most do not enjoy swimming. Breathing control becomes more complex as temperatures drop below 21°C (69.8°F).

Daylight

In April, the average length of the day is 13h and 13min.
On the first day of April in San Isidro, sunrise is at 07:47 and sunset at 20:26. On the last day of the month, sunrise is at 07:07 and sunset at 20:53 CEST.

Sunshine

The average sunshine in April is 8h.

UV index

The average daily maximum UV index in April is 9. A UV Index estimate of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 9 in April suggests the following recommendations:
It is crucial to take precautions; skin and eyes can get damaged if left unprotected. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

The high-temperature, in April, in San Isidro, records 19°C (66.2°F), while the low-temperature is 12°C (53.6°F).

In San Isidro, during April, the rain falls for 4 days and regularly aggregates up to 34mm (1.34") of precipitation.

January through April, with an average sea temperature of 19°C (66.2°F), are months with the coldest seawater in San Isidro, Spain.

In San Isidro, Spain, in April, the average water temperature is 19°C (66.2°F). Swimming in 19°C (66.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

In San Isidro, the average day length in April is 13h and 13min.

On the first day of April in San Isidro, sunrise is at 07:47 and sunset at 20:26. On the last day of the month, sunrise is at 07:07 and sunset at 20:53 CEST.

The average sunshine duration in April in San Isidro is 8h.

In April, the average daily maximum UV index is 9. A UV Index of 8 to 10 symbolizes a very high health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sea temperature
Average sunshine
Average UV index

Average temperature in April
San Isidro, Spain

  • Average high temperature in April: 19°C

The warmest month (with the highest average high temperature) is August (26°C).
The months with the lowest average high temperature are January, February and December (18°C).

  • Average low temperature in April: 12°C

The months with the highest average low temperature are August and September (18°C).
The coldest months (with the lowest average low temperature) are January, February, March and April (12°C).

Average rainfall in April
San Isidro, Spain

  • Average rainfall in April: 34mm

The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the least rainfall) is July (1mm).

Average rainfall days in April
San Isidro, Spain

  • Average rainfall days in April: 4 days

The months with the highest number of rainy days are November and December (6 days).
The months with the least rainy days are July and August (1 days).

Average sea temperature in April
San Isidro, Spain

  • Average sea temperature in April: 19°C

The best months for swimming (with the highest average sea temperature) are August, September and October (23°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (19°C).

Average daylight in April /
Average sunshine in April
San Isidro, Spain

  • Average daylight in April: 13h and 12min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in April: 8h

The month with the most sunshine is July (Average sunshine: 10h).
The months with the least sunshine are January, November and December (Average sunshine: 6h).

Average UV index in April
San Isidro, Spain

  • Average UV index in April: 9

The months with the highest UV index are June, July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 4).