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Climate and Average Weather Year Round in São João Brazil

In São João, the summers are long, hot, muggy, and mostly cloudy; the winters are short, comfortable, humid, wet, and mostly clear; and it is windy year round. Over the course of the year, the temperature typically varies from 60°F to 88°F and is rarely below 56°F or above 92°F.

Based on the tourism score, the best time of year to visit São João for warm-weather activities is from mid June to mid October.

Climate in São João

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow75%75%39%39%overcastclearprecipitation: 4.6 inprecipitation: 4.6 in0.4 in0.4 inmuggy: 91%muggy: 91%36%36%tourism score: 7.7tourism score: 7.75.15.1
São João weather by month. Click on each chart for more information.

The hot season lasts for 5.2 months, from October 29 to April 6, with an average daily high temperature above 86°F. The hottest month of the year in São João is March, with an average high of 87°F and low of 66°F.

The cool season lasts for 2.7 months, from June 6 to August 30, with an average daily high temperature below 78°F. The coldest month of the year in São João is July, with an average low of 60°F and high of 76°F.

Average High and Low Temperature in São João

Average High and Low Temperature in São JoãohothotcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FAug 376°FAug 376°FDec 2088°FDec 2088°F60°F60°F65°F65°FOct 2986°FOct 2986°FApr 686°FApr 686°FJun 678°FJun 678°F63°F63°F66°F66°F62°F62°F60°F60°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 88°F87°F87°F84°F81°F77°F76°F77°F81°F84°F87°F88°F
Temp. 75°F75°F75°F73°F71°F68°F67°F67°F69°F71°F73°F75°F
Low 65°F65°F66°F65°F64°F62°F60°F60°F61°F62°F64°F65°F

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 João

Average Hourly Temperature in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowcoolcoolcomfortablecomfortablewarmhothot
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
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Lembeni, Tanzania (5,091 miles away) is the far-away foreign place with temperatures most similar to São João (view comparison).

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In São João, 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 João begins around May 26 and lasts for 4.7 months, ending around October 17.

The clearest month of the year in São João is July, during which on average the sky is clear, mostly clear, or partly cloudy 74% of the time.

The cloudier part of the year begins around October 17 and lasts for 7.3 months, ending around May 26.

The cloudiest month of the year in São João is April, during which on average the sky is overcast or mostly cloudy 60% of the time.

Cloud Cover Categories in São João

Cloud Cover Categories in São JoãoclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1275%Jul 1275%Apr 2139%Apr 2139%May 2657%May 2657%Oct 1757%Oct 1757%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 53%54%57%60%50%32%26%28%29%42%57%57%
Clearer 47%46%43%40%50%68%74%72%71%58%43%43%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in São João varies significantly throughout the year.

The wetter season lasts 5.2 months, from March 11 to August 16, with a greater than 29% chance of a given day being a wet day. The month with the most wet days in São João is June, with an average of 14.9 days with at least 0.04 inches of precipitation.

The drier season lasts 6.8 months, from August 16 to March 11. The month with the fewest wet days in São João is November, with an average of 1.8 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 João is June, with an average of 14.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 52% on June 17.

Daily Chance of Precipitation in São João

Daily Chance of Precipitation in São JoãowetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 1752%Jun 1752%Oct 295%Oct 295%Mar 1129%Mar 1129%Aug 1629%Aug 1629%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 5.2d7.1d9.8d12.4d13.4d14.9d14.0d9.2d4.6d2.2d1.8d2.8d

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 João experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in São João. The month with the most rain in São João is June, with an average rainfall of 4.6 inches.

The month with the least rain in São João is November, with an average rainfall of 0.4 inches.

Average Monthly Rainfall in São João

Average Monthly Rainfall in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inJun 194.6 inJun 194.6 inNov 120.4 inNov 120.4 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 1.3″1.8″2.5″3.6″3.9″4.6″4.0″2.1″1.1″0.6″0.4″0.6″

The length of the day in São João does not vary substantially over the course of the year, staying within 38 minutes of 12 hours throughout. In 2024, the shortest day is June 20, with 11 hours, 36 minutes of daylight; the longest day is December 21, with 12 hours, 39 minutes of daylight.

Hours of Daylight and Twilight in São João

Hours of Daylight and Twilight in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minSep 2212 hr, 6 minSep 2212 hr, 39 minDec 2112 hr, 39 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2011 hr, 36 minJun 2011 hr, 36 minJun 20daydaynightNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 12.6h12.4h12.1h11.9h11.7h11.6h11.7h11.8h12.1h12.3h12.5h12.6h

The earliest sunrise is at 4:54 AM on November 16, and the latest sunrise is 47 minutes later at 5:41 AM on July 14. The earliest sunset is at 5:12 PM on May 26, and the latest sunset is 41 minutes later at 5:53 PM on January 28.

Daylight saving time (DST) is not observed in São João during 2024.

Sunrise & Sunset with Twilight in São João

Sunrise & Sunset with Twilight in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMNov 164:54 AMNov 164:54 AM5:53 PMJan 285:53 PMJan 28May 265:12 PMMay 265:12 PM5:41 AMJul 145:41 AMJul 14daySolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

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 João

Solar Elevation and Azimuth in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM0000101010102020202030303030404040405050505060606060707070800000101010102020202030303030404040405050505060606070708058NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 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.

Moon Rise, Set & Phases in São João

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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 João experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.7 months, from October 20 to July 10, during which time the comfort level is muggy, oppressive, or miserable at least 50% of the time. The month with the most muggy days in São João is April, with 26.9 days that are muggy or worse.

The month with the fewest muggy days in São João is August, with 11.5 days that are muggy or worse.

Humidity Comfort Levels in São João

Humidity Comfort Levels in São JoãomuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 1036%Aug 1036%91%Apr 2291%Apr 22Oct 2050%Oct 2050%Jul 1050%Jul 1050%NowNowoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 21.2d21.7d26.1d26.9d26.1d20.0d14.5d11.5d12.5d15.1d16.8d19.2d

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 João experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.7 months, from August 23 to February 15, with average wind speeds of more than 11.0 miles per hour. The windiest month of the year in São João is November, with an average hourly wind speed of 12.4 miles per hour.

The calmer time of year lasts for 6.3 months, from February 15 to August 23. The calmest month of the year in São João is April, with an average hourly wind speed of 9.6 miles per hour.

Average Wind Speed in São João

Average Wind Speed in São JoãowindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphNov 1512.4 mphNov 1512.4 mphApr 169.6 mphApr 169.6 mphAug 2311.0 mphAug 2311.0 mphFeb 1511.0 mphFeb 1511.0 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 11.611.010.19.69.710.210.611.011.311.912.412.2

The predominant average hourly wind direction in São João is from the east throughout the year.

Wind Direction in São João

Wind Direction in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

To characterize how pleasant the weather is in São João 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 time of year to visit São João for general outdoor tourist activities is from mid June to mid October, with a peak score in the first week of September.

Tourism Score in São João

Tourism Score in São Joãobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.77.75.15.15.55.5NowNowtemperaturetemperature precipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit São João for hot-weather activities is from early September to late March, with a peak score in the second week of October.

Beach/Pool Score in São João

Beach/Pool Score in São Joãobest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.46.44.54.5NowNow precipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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 João 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 João

Time Spent in Various Temperature Bands and the Growing Season in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 2100%Jul 2NowNowcoolcomfortablewarmhot
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
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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 João

Growing Degree Days in São JoãoJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°F8,000°F8,000°FJul 690°FJul 690°FAug 24900°FAug 24900°FOct 101,800°FOct 101,800°FJun 307,769°FJun 307,769°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

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 3.6 months, from September 19 to January 6, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in São João is November, with an average of 7.5 kWh.

The darker period of the year lasts for 2.8 months, from May 9 to August 2, with an average daily incident shortwave energy per square meter below 5.8 kWh. The darkest month of the year in São João is June, with an average of 5.4 kWh.

Average Daily Incident Shortwave Solar Energy in São João

Average Daily Incident Shortwave Solar Energy in São JoãobrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhOct 317.6 kWhOct 317.6 kWhJun 265.4 kWhJun 265.4 kWhSep 197.2 kWhSep 197.2 kWhJan 67.2 kWhJan 67.2 kWhMay 95.8 kWhMay 95.8 kWhAug 25.8 kWhAug 25.8 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 7.17.06.86.35.75.45.56.27.17.57.57.3

For the purposes of this report, the geographical coordinates of São João are -8.876 deg latitude, -36.367 deg longitude, and 2,336 ft elevation.

The topography within 2 miles of São João contains significant variations in elevation, with a maximum elevation change of 817 feet and an average elevation above sea level of 2,402 feet. Within 10 miles contains significant variations in elevation (1,581 feet). Within 50 miles contains very significant variations in elevation (3,780 feet).

The area within 2 miles of São João is covered by cropland (29%), trees (25%), shrubs (23%), and grassland (23%), within 10 miles by cropland (29%) and grassland (24%), and within 50 miles by trees (27%) and shrubs (25%).

This report illustrates the typical weather in São João, 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 João.

For each station, the records are corrected for the elevation difference between that station and São João 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 João is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between São João 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 João 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.

Other 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.

Disclaimer

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.

Please review our full terms contained on our Terms of Service page.