Climate and Average Weather Year Round in São Paulo Brazil
In São Paulo, the summers are warm, muggy, wet, and mostly cloudy and the winters are short, cool, and partly cloudy. Over the course of the year, the temperature typically varies from 55°F to 83°F and is rarely below 49°F or above 89°F.
Based on the tourism score, the best times of year to visit São Paulo for warm-weather activities are from early April to early July and from late July to mid September.
Climate in São Paulo
The warm season lasts for 3.4 months, from December 11 to March 24, with an average daily high temperature above 80°F. The hottest month of the year in São Paulo is February, with an average high of 82°F and low of 69°F.
The cool season lasts for 2.9 months, from May 13 to August 11, with an average daily high temperature below 74°F. The coldest month of the year in São Paulo is July, with an average low of 56°F and high of 72°F.
Average High and Low Temperature in São Paulo
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in São Paulo
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
In São Paulo, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in São Paulo begins around March 28 and lasts for 6.5 months, ending around October 12.
The clearest month of the year in São Paulo is August, during which on average the sky is clear, mostly clear, or partly cloudy 66% of the time.
The cloudier part of the year begins around October 12 and lasts for 5.5 months, ending around March 28.
The cloudiest month of the year in São Paulo is January, during which on average the sky is overcast or mostly cloudy 71% of the time.
Cloud Cover Categories in São Paulo
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in São Paulo varies very significantly throughout the year.
The wetter season lasts 5.5 months, from October 19 to April 4, with a greater than 42% chance of a given day being a wet day. The month with the most wet days in São Paulo is January, with an average of 21.0 days with at least 0.04 inches of precipitation.
The drier season lasts 6.5 months, from April 4 to October 19. The month with the fewest wet days in São Paulo is August, with an average of 5.3 days with at least 0.04 inches of precipitation.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in São Paulo is January, with an average of 21.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 69% on January 19.
Daily Chance of Precipitation in São Paulo
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. São Paulo experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in São Paulo. The month with the most rain in São Paulo is January, with an average rainfall of 8.5 inches.
The month with the least rain in São Paulo is August, with an average rainfall of 1.6 inches.
Average Monthly Rainfall in São Paulo
The length of the day in São Paulo varies over the course of the year. In 2023, the shortest day is June 21, with 10 hours, 41 minutes of daylight; the longest day is December 22, with 13 hours, 35 minutes of daylight.
Hours of Daylight and Twilight in São Paulo
The earliest sunrise is at 5:11 AM on November 30, and the latest sunrise is 1 hour, 38 minutes later at 6:49 AM on July 5. The earliest sunset is at 5:27 PM on June 7, and the latest sunset is 1 hour, 31 minutes later at 6:58 PM on January 13.
Daylight saving time (DST) is not observed in São Paulo during 2023.
Sunrise & Sunset with Twilight in São Paulo
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.
Solar Elevation and Azimuth in São Paulo
The figure below presents a compact representation of key lunar data for 2023. 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.
Moon Rise, Set & Phases in São Paulo
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.
São Paulo experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.6 months, from November 3 to April 22, during which time the comfort level is muggy, oppressive, or miserable at least 16% of the time. The month with the most muggy days in São Paulo is January, with 17.8 days that are muggy or worse.
The month with the fewest muggy days in São Paulo is July, with 0.0 days that are muggy or worse.
Humidity Comfort Levels in São Paulo
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 São Paulo experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.3 months, from August 20 to December 30, with average wind speeds of more than 7.6 miles per hour. The windiest month of the year in São Paulo is October, with an average hourly wind speed of 8.6 miles per hour.
The calmer time of year lasts for 7.7 months, from December 30 to August 20. The calmest month of the year in São Paulo is February, with an average hourly wind speed of 6.7 miles per hour.
Average Wind Speed in São Paulo
The predominant average hourly wind direction in São Paulo varies throughout the year.
The wind is most often from the north for 1.6 months, from June 2 to July 20, with a peak percentage of 37% on June 23. The wind is most often from the east for 10 months, from July 20 to June 2, with a peak percentage of 33% on January 1.
Wind Direction in São Paulo
São Paulo 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 water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.7 months, from December 28 to April 20, with an average temperature above 78°F. The month of the year in São Paulo with the warmest water is February, with an average temperature of 80°F.
The time of year with cooler water lasts for 3.4 months, from June 25 to October 6, with an average temperature below 70°F. The month of the year in São Paulo with the coolest water is August, with an average temperature of 68°F.
Average Water Temperature in São Paulo
To characterize how pleasant the weather is in São Paulo throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit São Paulo for general outdoor tourist activities are from early April to early July and from late July to mid September, with a peak score in the first week of May.
Tourism Score in São Paulo
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit São Paulo for hot-weather activities are from mid February to late April and for the entire month of December, with a peak score in the third week of March.
Beach/Pool Score in São Paulo
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
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 São Paulo 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.
Time Spent in Various Temperature Bands and the Growing Season in São Paulo
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
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.
Growing Degree Days in São Paulo
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 experiences some seasonal variation over the course of the year.
The brighter period of the year lasts for 2.7 months, from October 16 to January 7, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in São Paulo is November, with an average of 6.4 kWh.
The darker period of the year lasts for 2.6 months, from May 10 to July 31, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year in São Paulo is June, with an average of 3.8 kWh.
Average Daily Incident Shortwave Solar Energy in São Paulo
For the purposes of this report, the geographical coordinates of São Paulo are -23.548 deg latitude, -46.636 deg longitude, and 2,523 ft elevation.
The topography within 2 miles of São Paulo contains only modest variations in elevation, with a maximum elevation change of 427 feet and an average elevation above sea level of 2,497 feet. Within 10 miles contains only modest variations in elevation (1,657 feet). Within 50 miles contains very significant variations in elevation (5,630 feet).
The area within 2 miles of São Paulo is covered by artificial surfaces (99%), within 10 miles by artificial surfaces (86%), and within 50 miles by trees (46%) and water (15%).
This report illustrates the typical weather in São Paulo, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in São Paulo.
For each station, the records are corrected for the elevation difference between that station and São Paulo according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at São Paulo is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between São Paulo and a given station.
The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of São Paulo and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © OpenStreetMap contributors.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.
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