Fall Weather at Augusto Severo International Airport (historical) Brazil

Daily high temperatures are around 87°F, rarely falling below 82°F or exceeding 91°F. The highest daily average high temperature is 88°F on March 8.

Daily low temperatures are around 75°F, rarely falling below 72°F or exceeding 79°F.

For reference, on March 4, the hottest day of the year, temperatures at Augusto Severo International Airport (historical) typically range from 76°F to 88°F, while on July 31, the coldest day of the year, they range from 71°F to 84°F.

The figure below shows you a compact characterization of the hourly average fall temperatures. 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.

Mahina, French Polynesia (7,678 miles away) and Nain, Jamaica (3,329 miles) are the far-away foreign places with temperatures most similar to Augusto Severo International Airport (historical) (view comparison).

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The fall at Augusto Severo International Airport (historical) experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 55% to 43%. The highest chance of overcast or mostly cloudy conditions is 66% on April 22.

The clearest day of the fall is May 31, with clear, mostly clear, or partly cloudy conditions 57% of the time.

For reference, on April 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 30, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Augusto Severo International Airport (historical), the chance of a wet day over the course of the fall is very rapidly increasing, starting the season at 35% and ending it at 46%.

For reference, the year's highest daily chance of a wet day is 52% on April 6, and its lowest chance is 3% on October 13.

Rainfall

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

The average sliding 31-day rainfall during the fall at Augusto Severo International Airport (historical) is rapidly increasing, starting the season at 3.3 inches, when it rarely exceeds 6.7 inches or falls below 0.5 inches, and ending the season at 5.0 inches, when it rarely exceeds 9.3 inches or falls below 1.7 inches.

The highest average 31-day accumulation is 5.5 inches on April 14.

Over the course of the fall at Augusto Severo International Airport (historical), the length of the day is gradually decreasing. From the start to the end of the season, the length of the day decreases by 25 minutes, implying an average daily decrease of 16 seconds, and weekly decrease of 1 minute, 54 seconds.

The shortest day of the fall is May 31, with 11 hours, 48 minutes of daylight and the longest day is March 1, with 12 hours, 13 minutes of daylight.

The latest sunrise of the fall at Augusto Severo International Airport (historical) is 5:26 AM on March 1 and the earliest sunrise is 6 minutes earlier at 5:21 AM on April 28.

The latest sunset is 5:39 PM on March 1 and the earliest sunset is 27 minutes earlier at 5:12 PM on May 23.

Daylight saving time is not observed at Augusto Severo International Airport (historical) during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:05 AM and sets 12 hours, 28 minutes later, at 5:33 PM, while on June 20, the shortest day of the year, it rises at 5:29 AM and sets 11 hours, 47 minutes later, at 5:16 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 the fall of 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 at Augusto Severo International Airport (historical) is essentially constant during the fall, remaining around 100% throughout.

For reference, on February 24, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 8, the least muggy day of the year, there are muggy conditions 96% 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 at Augusto Severo International Airport (historical) is increasing during the fall, increasing from 12.3 miles per hour to 13.6 miles per hour over the course of the season.

For reference, on September 4, the windiest day of the year, the daily average wind speed is 16.1 miles per hour, while on March 27, the calmest day of the year, the daily average wind speed is 11.3 miles per hour.

The lowest daily average wind speed during the fall is 11.3 miles per hour on March 28.

The hourly average wind direction at Augusto Severo International Airport (historical) throughout the fall is predominantly from the east, with a peak proportion of 94% on March 2.

Augusto Severo International Airport (historical) 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 at Augusto Severo International Airport (historical) is essentially constant during the fall, remaining within 1°F of 83°F throughout.

The highest average surface water temperature during the fall is 83°F on April 3.

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 at Augusto Severo International Airport (historical) 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 at Augusto Severo International Airport (historical) are very rapidly increasing during the fall, increasing by 2,754°F, from 7,182°F to 9,936°F, over the course of the season.

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 at Augusto Severo International Airport (historical) is gradually decreasing during the fall, falling by 1.0 kWh, from 6.6 kWh to 5.6 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of Augusto Severo International Airport (historical) are -5.911 deg latitude, -35.248 deg longitude, and 164 ft elevation.

The topography within 2 miles of Augusto Severo International Airport (historical) contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 157 feet. Within 10 miles also contains only modest variations in elevation (407 feet). Within 50 miles contains only modest variations in elevation (1,759 feet).

The area within 2 miles of Augusto Severo International Airport (historical) is covered by artificial surfaces (39%), shrubs (19%), trees (17%), and grassland (17%), within 10 miles by water (24%) and cropland (19%), and within 50 miles by water (53%) and cropland (13%).