April weather forecast
Olhão, Portugal

englishespañol中文
Share

Weather in April

As April sets in, Olhão, Portugal turns warmer, indicative of the full arrival of spring. Compared to March, there is a noticeable rise in average temperatures and an increase in relative humidity from 73% to 74%. Temperatures can reach as high as 18.3°C (64.9°F), making it one of the warmer months in the first half of the year. Springtime hues are in full bloom across the city parks and streets, making it the perfect time for photography or a leisurely stroll. With substantially longer days than March, there's more time available for outdoor activities such as sailing or fishing.

Temperature

The advent of April observes an average high-temperature of a still comfortable 18.3°C (64.9°F), nearly identical to March's 16.8°C (62.2°F). A modest dip in temperatures to an average of 13.7°C (56.7°F) is observed throughout Olhão's April nights.

Humidity

The most humid month is April, with an average relative humidity of 74%.

Rainfall

In Olhão, during April, the rain falls for 8.2 days and regularly aggregates up to 17mm (0.67") of precipitation. Throughout the year, in Olhão, there are 54.1 rainfall days, and 109mm (4.29") of precipitation is accumulated.

Sea temperature

In Olhão, the average seawater temperature in April is 17.3°C (63.1°F).
Note: Swimming in water with a temperature of 17.3°C (63.1°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.

Daylight

The average length of the day in April is 13h and 10min.
On the first day of April, sunrise is at 07:16 and sunset at 19:54. On the last day of the month, sunrise is at 06:37 and sunset at 20:19 WEST.

Sunshine

In Olhão, the average sunshine in April is 9.5h.

UV index

The average daily maximum UV index in April in Olhão is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 during April leads to these advisories:
Undertake precautions - It is suggested to shield oneself from sunburn. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

What is the average April temperature in Olhão?

An average high-temperature, in April, in Olhão, is 18.3°C (64.9°F) and the average low-temperature is 13.7°C (56.7°F).

What is the most humid month in Olhão?

April is the most humid month, with an average relative humidity of 74%.

What is the average humidity in April in Olhão?

In April, the average relative humidity in Olhão, Portugal, is 74%.

How many days does it rain in April in Olhão?

In Olhão, in April, it is raining for 8.2 days, with typically 17mm (0.67") of accumulated precipitation.

How cold is the water in April in Olhão?

In Olhão, Portugal, in April, the average water temperature is 17.3°C (63.1°F). Swimming in 17.3°C (63.1°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Olhão have in April?

The average day length in April in Olhão, Portugal, is 13h and 10min.

When is the sunrise / sunset in April in Olhão?

In April, on the first day of the month, sunrise is at 07:16 and sunset at 19:54. On the last day of the month, in Olhão, sunrise is at 06:37 and sunset at 20:19 WEST.

How many hours of sunshine does Olhão have in April?

The average sunshine duration in April in Olhão is 9.5h.

What is the UV index reading in April in Olhão?

In April, the average daily maximum UV index in Olhão is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.

Average temperature in April
Olhão, Portugal

Average temperature in April - Olhão, Portugal
  • Average high temperature in April: 18.3°C

The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (15.1°C).

  • Average low temperature in April: 13.7°C

The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is February (11.2°C).

Average pressure in April
Olhão, Portugal

Average pressure in April - Olhão, Portugal
  • Average pressure in April: 1015.4mbar

The month with the highest atmospheric pressure is December (1022.5mbar).
The months with the lowest atmospheric pressure are April and August (1015.4mbar).

Average wind speed in April
Olhão, Portugal

Average wind speed in April - Olhão, Portugal
  • Average wind speed in April: 17.3km/h

The windiest months (with the highest average wind speed) are February and March (19km/h).
The calmest month (with the lowest average wind speed) is September (12.7km/h).

Average humidity in April
Olhão, Portugal

Average humidity in April - Olhão, Portugal
  • Average humidity in April: 74%

The month with the highest relative humidity is April (74%).
The month with the lowest relative humidity is August (62%).

Average rainfall in April
Olhão, Portugal

Average rainfall in April - Olhão, Portugal
  • Average rainfall in April: 17mm

The wettest month (with the highest rainfall) is November (19mm).
The driest months (with the least rainfall) are June, July and August (1mm).

Average rainfall days in April
Olhão, Portugal

Average rainfall days in April - Olhão, Portugal
  • Average rainfall days in April: 8.2 days

The month with the highest number of rainy days is April (8.2 days).
The month with the least rainy days is August (0.8 days).

Average sea temperature in April
Olhão, Portugal

Average sea temperature in April - Olhão, Portugal
  • Average sea temperature in April: 17.3°C

The best month for swimming (with the highest average sea temperature) is August (22.1°C).
The coldest month (with the lowest average sea temperature) is March (15.9°C).

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

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in April: 9h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

Average sunshine days in April
Olhão, Portugal

Average sunshine days in April - Olhão, Portugal
  • Average sunshine days in April: 20.3 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is April (20.3 days).

Average UV index in April
Olhão, Portugal

Average UV index in April - Olhão, Portugal
  • Average UV index in April: 5

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, November and December (UV index 4).

Average cloud cover in April
Olhão, Portugal

Average cloud cover in April - Olhão, Portugal
  • Average cloud cover in April: 28

The month with the most cloud cover is January (Cloud cover 30).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in April
Olhão, Portugal

Average visibility in April - Olhão, 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).

Olhão, Portugal

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location