April weather forecast
Sesimbra, Portugal

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Weather in April

In April, the transition culminates in a seasonal swing, marking its departure from the initial coolness. The weather takes a warm turn with temperatures touching 19.4°C (66.9°F), an appreciable change from March. With rainfall gradually receding, the area enjoys an encouraging 13.2 hours of daylight, a significant increase from the previous month. Increased visibility ties into the clear, sunny days characteristic of April in Sesimbra. It's a time when the region unabashedly showcases its Mediterranean charm.

Temperature

April in Sesimbra begins with an average high-temperature of a still enjoyable 19.4°C (66.9°F), reflecting close similarity to the preceding month. The nighttime temperature in Sesimbra dips to a cool 11.5°C (52.7°F) on average during April.

Humidity

In Sesimbra, Portugal, the average relative humidity in April is 73%.

Rainfall

In Sesimbra, Portugal, during April, the rain falls for 12.8 days and regularly aggregates up to 45mm (1.77") of precipitation. Throughout the year, in Sesimbra, Portugal, there are 100.8 rainfall days, and 338mm (13.31") of precipitation is accumulated.

Sea temperature

In Sesimbra, the average seawater temperature in April is 16.5°C (61.7°F).
Note: For most people, a water temperature of 16.5°C (61.7°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).

Daylight

In Sesimbra, the average length of the day in April is 13h and 13min.
On the first day of April, sunrise is at 07:20 and sunset at 19:59. On the last day of the month, sunrise is at 06:39 and sunset at 20:27 WEST.

Sunshine

In April, the average sunshine is 8.7h.

UV index

The months with the lowest UV index in Sesimbra are January through April, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 4 during April translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.

Frequently asked questions

What is the average April temperature in Sesimbra?

In April, the average high-temperature and low-temperature in Sesimbra, Portugal, are 19.4°C (66.9°F) and 11.5°C (52.7°F) respectively.

What is the average humidity in April in Sesimbra?

In Sesimbra, the average relative humidity in April is 73%.

How many days does it rain in April in Sesimbra?

In Sesimbra, during April, the rain falls for 12.8 days and regularly aggregates up to 45mm (1.77") of precipitation.

How cold is the water in April in Sesimbra?

In April, the average sea temperature in Sesimbra is 16.5°C (61.7°F). For swimming, a surface water temperature of 16.5°C (61.7°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Sesimbra have in April?

The average day length in April in Sesimbra is 13h and 13min.

When are sunrise and sunset in April in Sesimbra?

On the first day of April, sunrise is at 07:20 and sunset at 19:59. On the last day of the month, sunrise is at 06:39 and sunset at 20:27 WEST.

How long on average sun shines in April in Sesimbra?

The average sunshine duration in April in Sesimbra is 8.7h.

What are the months with the lowest UV index in Sesimbra?

The months with the lowest UV index in Sesimbra, Portugal, are January through April, November and December, with an average maximum UV index of 4.

How high is the UV index in April in Sesimbra?

The average daily maximum UV index in April in Sesimbra, Portugal, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.

Average temperature in April
Sesimbra, Portugal

Average temperature in April - Sesimbra, Portugal
  • Average high temperature in April: 19.4°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in April: 11.5°C

The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.1°C).

Average pressure in April
Sesimbra, Portugal

Average pressure in April - Sesimbra, Portugal
  • Average pressure in April: 1015.6mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

Average wind speed in April
Sesimbra, Portugal

Average wind speed in April - Sesimbra, Portugal
  • Average wind speed in April: 13.6km/h

The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is September (11.6km/h).

Average humidity in April
Sesimbra, Portugal

Average humidity in April - Sesimbra, Portugal
  • Average humidity in April: 73%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (64%).

Average rainfall in April
Sesimbra, Portugal

Average rainfall in April - Sesimbra, Portugal
  • Average rainfall in April: 45mm

The wettest month (with the highest rainfall) is November (55mm).
The driest months (with the least rainfall) are July and August (2mm).

Average rainfall days in April
Sesimbra, Portugal

Average rainfall days in April - Sesimbra, Portugal
  • Average rainfall days in April: 12.8 days

The month with the highest number of rainy days is November (13.3 days).
The month with the least rainy days is August (1.7 days).

Average sea temperature in April
Sesimbra, Portugal

Average sea temperature in April - Sesimbra, Portugal
  • Average sea temperature in April: 16.5°C

The best month for swimming (with the highest average sea temperature) is October (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.3°C).

Average daylight in April /
Average sunshine in April
Sesimbra, Portugal

Average daylight in April / Average sunshine in April - Sesimbra, Portugal
  • Average daylight in April: 13h and 1min

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 30min).

  • Average sunshine in April: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in April
Sesimbra, Portugal

Average sunshine days in April - Sesimbra, Portugal
  • Average sunshine days in April: 15.6 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (14.9 days).

Average UV index in April
Sesimbra, Portugal

Average UV index in April - Sesimbra, Portugal
  • Average UV index in April: 4

The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).

Average cloud cover in April
Sesimbra, Portugal

Average cloud cover in April - Sesimbra, Portugal
  • Average cloud cover in April: 36

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in April
Sesimbra, Portugal

Average visibility in April - Sesimbra, Portugal
  • Average visibility in April: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Sesimbra, Portugal

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