Winter Weather in Embu Guaçu São Paulo, Brazil

Daily high temperatures are around 72°F, rarely falling below 58°F or exceeding 84°F. The lowest daily average high temperature is 70°F on July 20.

Daily low temperatures are around 57°F, rarely falling below 49°F or exceeding 64°F. The lowest daily average low temperature is 56°F on July 24.

For reference, on February 13, the hottest day of the year, temperatures in Embu Guaçu typically range from 69°F to 82°F, while on July 23, the coldest day of the year, they range from 56°F to 70°F.

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

Akhfennir, Morocco (4,274 miles away); Scottburgh, KwaZulu-Natal, South Africa (4,707 miles); and Le Tampon, Réunion (6,365 miles) are the far-away foreign places with temperatures most similar to Embu Guaçu (view comparison).

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The winter in Embu Guaçu experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 37% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 34% on August 27.

The clearest day of the winter is August 27, with clear, mostly clear, or partly cloudy conditions 66% of the time.

For reference, on January 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on August 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 66%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Embu Guaçu, the chance of a wet day over the course of the winter is essentially constant, remaining around 22% throughout.

For reference, the year's highest daily chance of a wet day is 68% on January 27, and its lowest chance is 17% on August 16.

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 winter in Embu Guaçu is gradually decreasing, starting the season at 2.9 inches, when it rarely exceeds 6.5 inches or falls below 0.6 inches, and ending the season at 2.6 inches, when it rarely exceeds 5.1 inches or falls below 0.5 inches.

The lowest average 31-day accumulation is 1.7 inches on August 10.

Over the course of the winter in Embu Guaçu, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 52 minutes, implying an average daily increase of 34 seconds, and weekly increase of 3 minutes, 59 seconds.

The shortest day of the winter is June 21, with 10 hours, 40 minutes of daylight and the longest day is August 31, with 11 hours, 37 minutes of daylight.

The latest sunrise of the winter in Embu Guaçu is 6:50 AM on July 3 and the earliest sunrise is 31 minutes earlier at 6:19 AM on August 31.

The earliest sunset is 5:27 PM on June 8 and the latest sunset is 29 minutes later at 5:56 PM on August 31.

Daylight saving time is not observed in Embu Guaçu during 2026.

For reference, on December 21, the longest day of the year, the Sun rises at 5:17 AM and sets 13 hours, 37 minutes later, at 6:53 PM, while on June 21, the shortest day of the year, it rises at 6:49 AM and sets 10 hours, 40 minutes later, at 5:29 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 winter of 2026. 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 Embu Guaçu is essentially constant during the winter, remaining within 1% of 1% throughout.

The lowest chance of a muggy day during the winter is 0% on July 22.

For reference, on February 9, the muggiest day of the year, there are muggy conditions 65% of the time, while on July 20, 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 Embu Guaçu is gradually increasing during the winter, increasing from 6.5 miles per hour to 7.3 miles per hour over the course of the season.

For reference, on September 26, the windiest day of the year, the daily average wind speed is 7.9 miles per hour, while on February 24, the calmest day of the year, the daily average wind speed is 6.2 miles per hour.

The lowest daily average wind speed during the winter is 6.4 miles per hour on June 18.

The wind direction in Embu Guaçu during the winter is predominantly out of the east from June 1 to June 5 and from July 20 to August 31 and the north from June 5 to July 20.

Embu Guaçu 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 Embu Guaçu is decreasing during the winter, falling by 4°F, from 72°F to 68°F, over the course of the season.

The lowest average surface water temperature during the winter is 68°F on August 8.

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 Embu Guaçu 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 Embu Guaçu are very rapidly decreasing during the winter, decreasing by 5,327°F, from 6,113°F to 786°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 in Embu Guaçu is increasing during the winter, rising by 1.2 kWh, from 3.8 kWh to 5.0 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 3.6 kWh on June 26.

For the purposes of this report, the geographical coordinates of Embu Guaçu are -23.832 deg latitude, -46.811 deg longitude, and 2,513 ft elevation.

The topography within 2 miles of Embu Guaçu contains only modest variations in elevation, with a maximum elevation change of 259 feet and an average elevation above sea level of 2,515 feet. Within 10 miles contains only modest variations in elevation (1,135 feet). Within 50 miles contains very significant variations in elevation (4,718 feet).

The area within 2 miles of Embu Guaçu is covered by trees (50%), shrubs (21%), and cropland (19%), within 10 miles by trees (76%) and shrubs (10%), and within 50 miles by trees (46%) and water (27%).