August Weather in Vila de Porto Santo Portugal

Daily high temperatures are around 77°F, rarely falling below 74°F or exceeding 81°F. The highest daily average high temperature is 78°F on August 29.

Daily low temperatures are around 70°F, rarely falling below 68°F or exceeding 73°F. The highest daily average low temperature is 71°F on August 28.

For reference, on August 28, the hottest day of the year, temperatures in Vila de Porto Santo typically range from 71°F to 78°F, while on February 17, the coldest day of the year, they range from 58°F to 65°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Callao, Peru (5,075 miles away) is the far-away foreign place with temperatures most similar to Vila de Porto Santo (view comparison).

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The month of August in Vila de Porto Santo experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 15% to 25%.

The clearest day of the month is August 1, with clear, mostly clear, or partly cloudy conditions 85% of the time.

For reference, on January 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 52%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 87%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Vila de Porto Santo, the chance of a wet day over the course of August is essentially constant, remaining around 1% throughout.

For reference, the year's highest daily chance of a wet day is 17% on December 6, and its lowest chance is 0% on July 25.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during August in Vila de Porto Santo is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.3 inches or falling below -0.0 inches.

Over the course of August in Vila de Porto Santo, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 53 minutes, implying an average daily decrease of 1 minute, 47 seconds, and weekly decrease of 12 minutes, 27 seconds.

The shortest day of the month is August 31, with 12 hours, 52 minutes of daylight and the longest day is August 1, with 13 hours, 45 minutes of daylight.

The earliest sunrise of the month in Vila de Porto Santo is 7:18 AM on August 1 and the latest sunrise is 20 minutes later at 7:39 AM on August 31.

The latest sunset is 9:03 PM on August 1 and the earliest sunset is 33 minutes earlier at 8:31 PM on August 31.

Daylight saving time is observed in Vila de Porto Santo during 2024, but it neither starts nor ends during August, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:56 AM and sets 14 hours, 20 minutes later, at 9:17 PM, while on December 21, the shortest day of the year, it rises at 8:04 AM and sets 9 hours, 58 minutes later, at 6:02 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for August 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Vila de Porto Santo is rapidly increasing during August, rising from 30% to 41% over the course of the month.

The highest chance of a muggy day during August is 42% on August 29.

For reference, on August 27, the muggiest day of the year, there are muggy conditions 42% of the time, while on February 9, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Vila de Porto Santo is decreasing during August, decreasing from 13.2 miles per hour to 11.7 miles per hour over the course of the month.

For reference, on December 29, the windiest day of the year, the daily average wind speed is 14.8 miles per hour, while on September 10, the calmest day of the year, the daily average wind speed is 11.4 miles per hour.

The hourly average wind direction in Vila de Porto Santo throughout August is predominantly from the north, with a peak proportion of 88% on August 1.

Vila de Porto Santo is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Vila de Porto Santo is essentially constant during August, remaining within 1°F of 73°F throughout.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Vila de Porto Santo are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Vila de Porto Santo are rapidly increasing during August, increasing by 707°F, from 3,173°F to 3,881°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Vila de Porto Santo is decreasing during August, falling by 1.0 kWh, from 7.5 kWh to 6.5 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Vila de Porto Santo are 33.060 deg latitude, -16.334 deg longitude, and 46 ft elevation.

The topography within 2 miles of Vila de Porto Santo contains very significant variations in elevation, with a maximum elevation change of 1,594 feet and an average elevation above sea level of 225 feet. Within 10 miles also contains very significant variations in elevation (1,604 feet). Within 50 miles contains very significant variations in elevation (6,102 feet).

The area within 2 miles of Vila de Porto Santo is covered by water (44%), artificial surfaces (17%), and grassland (16%), within 10 miles by water (95%), and within 50 miles by water (97%).