July Weather in Oeiras Brazil

Daily high temperatures are around 95°F, rarely falling below 91°F or exceeding 98°F.

Daily low temperatures are around 72°F, rarely falling below 68°F or exceeding 75°F. The lowest daily average low temperature is 71°F on July 24.

For reference, on October 5, the hottest day of the year, temperatures in Oeiras typically range from 78°F to 101°F, while on July 24, the coldest day of the year, they range from 71°F to 95°F.

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

Somotillo, Nicaragua (3,375 miles away) and Tanguiéta, Benin (3,228 miles) are the far-away foreign places with temperatures most similar to Oeiras (view comparison).

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The month of July in Oeiras experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 31% to 27%. The lowest chance of overcast or mostly cloudy conditions is 27% on July 31.

The clearest day of the month is July 31, with clear, mostly clear, or partly cloudy conditions 73% of the time.

For reference, on February 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 80%, while on July 31, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.

Over the course of July in Oeiras, the length of the day is essentially constant. The shortest day of the month is July 1, with 11 hours, 43 minutes of daylight and the longest day is July 31, with 11 hours, 49 minutes of daylight.

The latest sunrise of the month in Oeiras is 6:02 AM on July 17 and the earliest sunrise is 1 minute, 25 seconds earlier at 6:00 AM on July 31.

The earliest sunset is 5:44 PM on July 1 and the latest sunset is 5 minutes later at 5:49 PM on July 31.

Daylight saving time is not observed in Oeiras during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:30 AM and sets 12 hours, 32 minutes later, at 6:02 PM, while on June 20, the shortest day of the year, it rises at 5:58 AM and sets 11 hours, 43 minutes later, at 5:41 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 July 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 Oeiras is decreasing during July, falling from 10% to 3% over the course of the month.

For reference, on March 27, the muggiest day of the year, there are muggy conditions 97% of the time, while on August 31, the least muggy day of the year, there are muggy conditions 1% 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 Oeiras is gradually increasing during July, increasing from 11.3 miles per hour to 12.2 miles per hour over the course of the month.

For reference, on August 9, the windiest day of the year, the daily average wind speed is 12.4 miles per hour, while on March 15, the calmest day of the year, the daily average wind speed is 5.5 miles per hour.

The hourly average wind direction in Oeiras throughout July is predominantly from the east, with a peak proportion of 92% on July 1.

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 Oeiras 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 Oeiras are very rapidly increasing during July, increasing by 912°F, from 1°F to 913°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 Oeiras is gradually increasing during July, rising by 0.5 kWh, from 5.9 kWh to 6.4 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Oeiras are -7.025 deg latitude, -42.131 deg longitude, and 594 ft elevation.

The topography within 2 miles of Oeiras contains only modest variations in elevation, with a maximum elevation change of 371 feet and an average elevation above sea level of 642 feet. Within 10 miles contains only modest variations in elevation (568 feet). Within 50 miles contains significant variations in elevation (1,545 feet).

The area within 2 miles of Oeiras is covered by shrubs (44%), grassland (27%), and trees (26%), within 10 miles by shrubs (41%) and trees (31%), and within 50 miles by shrubs (40%) and trees (36%).