September Weather in Praia da Vitória Portugal

Daily high temperatures decrease by 4°F, from 77°F to 73°F, rarely falling below 69°F or exceeding 81°F.

Daily low temperatures decrease by 3°F, from 67°F to 64°F, rarely falling below 59°F or exceeding 71°F.

For reference, on August 11, the hottest day of the year, temperatures in Praia da Vitória typically range from 67°F to 78°F, while on February 13, the coldest day of the year, they range from 54°F to 62°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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.

Avalon, United States (4,894 miles away); Antofagasta, Chile (5,147 miles); and Mossel Bay, South Africa (5,948 miles) are the far-away foreign places with temperatures most similar to Praia da Vitória (view comparison).

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The month of September in Praia da Vitória experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 40% to 48%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 61% of the time.

For reference, on December 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 63%, while on July 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 75%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Praia da Vitória, the chance of a wet day over the course of September is very rapidly increasing, starting the month at 16% and ending it at 25%.

For reference, the year's highest daily chance of a wet day is 35% on December 5, and its lowest chance is 5% on July 10.

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 September in Praia da Vitória is increasing, starting the month at 1.0 inches, when it rarely exceeds 2.2 inches or falls below 0.2 inches, and ending the month at 2.0 inches, when it rarely exceeds 4.3 inches or falls below 0.7 inches.

Over the course of September in Praia da Vitória, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 12 minutes, implying an average daily decrease of 2 minutes, 28 seconds, and weekly decrease of 17 minutes, 19 seconds.

The shortest day of the month is September 30, with 11 hours, 48 minutes of daylight and the longest day is September 1, with 13 hours, 0 minutes of daylight.

The earliest sunrise of the month in Praia da Vitória is 7:17 AM on September 1 and the latest sunrise is 26 minutes later at 7:43 AM on September 30.

The latest sunset is 8:17 PM on September 1 and the earliest sunset is 46 minutes earlier at 7:31 PM on September 30.

Daylight saving time is observed in Praia da Vitória during 2024, but it neither starts nor ends during September, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:23 AM and sets 14 hours, 53 minutes later, at 9:16 PM, while on December 21, the shortest day of the year, it rises at 8:02 AM and sets 9 hours, 27 minutes later, at 5:30 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 September 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 Praia da Vitória is rapidly decreasing during September, falling from 46% to 27% over the course of the month.

For reference, on August 12, the muggiest day of the year, there are muggy conditions 51% of the time, while on March 3, 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 Praia da Vitória is rapidly increasing during September, increasing from 11.7 miles per hour to 14.0 miles per hour over the course of the month.

For reference, on December 26, the windiest day of the year, the daily average wind speed is 18.7 miles per hour, while on July 16, the calmest day of the year, the daily average wind speed is 10.0 miles per hour.

The hourly average wind direction in Praia da Vitória throughout September is predominantly from the north, with a peak proportion of 30% on September 22.

Praia da Vitória 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 Praia da Vitória is gradually decreasing during September, falling by 2°F, from 73°F to 71°F, over the course of the month.

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 Praia da Vitória 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 Praia da Vitória are rapidly increasing during September, increasing by 589°F, from 3,267°F to 3,856°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 Praia da Vitória is decreasing during September, falling by 1.4 kWh, from 5.7 kWh to 4.3 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Praia da Vitória are 38.733 deg latitude, -27.067 deg longitude, and 85 ft elevation.

The topography within 2 miles of Praia da Vitória contains significant variations in elevation, with a maximum elevation change of 817 feet and an average elevation above sea level of 157 feet. Within 10 miles contains significant variations in elevation (2,612 feet). Within 50 miles contains large variations in elevation (3,376 feet).

The area within 2 miles of Praia da Vitória is covered by water (50%), trees (28%), and grassland (15%), within 10 miles by water (74%) and grassland (18%), and within 50 miles by water (98%).