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Climate and Average Weather Year Round in Santos Brazil

In Santos, the summers are short, hot, oppressive, and mostly cloudy; the winters are long, comfortable, and mostly clear; and it is wet year round. Over the course of the year, the temperature typically varies from 66°F to 89°F and is rarely below 60°F or above 96°F.

Based on the tourism score, the best time of year to visit Santos for warm-weather activities is from early May to late September.

Climate in Santos

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow70%70%32%32%clearovercastprecipitation: 9.1 inprecipitation: 9.1 in1.9 in1.9 inmuggy: 94%muggy: 94%5%5%tourism score: 7.6tourism score: 7.63.43.4
Santos weather by month. Click on each chart for more information.

The hot season lasts for 2.6 months, from December 31 to March 17, with an average daily high temperature above 86°F. The hottest month of the year in Santos is February, with an average high of 88°F and low of 78°F.

The cool season lasts for 4.9 months, from May 18 to October 15, with an average daily high temperature below 80°F. The coldest month of the year in Santos is July, with an average low of 67°F and high of 78°F.

Average High and Low Temperature in Santos

Average High and Low Temperature in SantoshotcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 2678°FJul 2678°FFeb 1489°FFeb 1489°F66°F66°F78°F78°FDec 3186°FDec 3186°FMar 1786°FMar 1786°FMay 1880°FMay 1880°FOct 1580°FOct 1580°F76°F76°F77°F77°F71°F71°F69°F69°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 87°F88°F86°F84°F80°F79°F78°F78°F78°F80°F82°F85°F
Temp. 81°F83°F81°F79°F75°F73°F71°F72°F72°F74°F77°F79°F
Low 77°F78°F77°F75°F71°F68°F67°F67°F67°F69°F72°F75°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 Santos

Average Hourly Temperature in SantosJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcomfortablewarmwarmwarmhot
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.

Sagua la Grande, Cuba (3,950 miles away) and Le Port, Réunion (6,332 miles) are the far-away foreign places with temperatures most similar to Santos (view comparison).

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In Santos, 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 Santos begins around March 25 and lasts for 6.6 months, ending around October 11.

The clearest month of the year in Santos is August, during which on average the sky is clear, mostly clear, or partly cloudy 69% of the time.

The cloudier part of the year begins around October 11 and lasts for 5.4 months, ending around March 25.

The cloudiest month of the year in Santos is January, during which on average the sky is overcast or mostly cloudy 67% of the time.

Cloud Cover Categories in Santos

Cloud Cover Categories in SantosclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2670%Aug 2670%Jan 1432%Jan 1432%Mar 2551%Mar 2551%Oct 1151%Oct 1151%NowNowclearmostly clearpartly cloudyovercastmostly cloudy
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 67%65%53%39%35%35%34%31%37%50%53%59%
Clearer 33%35%47%61%65%65%66%69%63%50%47%41%

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

The wetter season lasts 6.1 months, from October 3 to April 7, with a greater than 42% chance of a given day being a wet day. The month with the most wet days in Santos is January, with an average of 19.9 days with at least 0.04 inches of precipitation.

The drier season lasts 5.9 months, from April 7 to October 3. The month with the fewest wet days in Santos is August, with an average of 6.5 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 Santos is January, with an average of 19.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 66% on January 29.

Daily Chance of Precipitation in Santos

Daily Chance of Precipitation in SantoswetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 2966%Jan 2966%Aug 1518%Aug 1518%Oct 342%Oct 342%Apr 742%Apr 742%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 19.9d18.2d16.7d11.4d8.9d7.3d6.9d6.5d10.5d13.3d13.8d17.3d

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. Santos experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Santos. The month with the most rain in Santos is January, with an average rainfall of 8.7 inches.

The month with the least rain in Santos is August, with an average rainfall of 2.0 inches.

Average Monthly Rainfall in Santos

Average Monthly Rainfall in SantosJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 inJan 279.1 inJan 279.1 inAug 101.9 inAug 101.9 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 8.7″8.4″6.8″4.5″3.1″2.8″2.3″2.0″3.8″4.2″4.9″6.8″

The length of the day in Santos varies over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 39 minutes of daylight; the longest day is December 21, with 13 hours, 37 minutes of daylight.

Hours of Daylight and Twilight in Santos

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 13.4h12.9h12.2h11.5h10.9h10.7h10.8h11.3h12.0h12.7h13.3h13.6h

The earliest sunrise is at 5:09 AM on November 29, and the latest sunrise is 1 hour, 40 minutes later at 6:48 AM on July 3. The earliest sunset is at 5:25 PM on June 7, and the latest sunset is 1 hour, 33 minutes later at 6:58 PM on January 13.

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

Sunrise & Sunset with Twilight in Santos

Sunrise & Sunset with Twilight in SantosJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 295:09 AMNov 295:09 AM6:58 PMJan 136:58 PMJan 13Jun 75:25 PMJun 75:25 PM6:48 AMJul 36:48 AMJul 3daySolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Santos

Solar Elevation and Azimuth in SantosJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00001010101020202020303030304040404050505060607070800000101010102020202030303030404040405050506060607070804389NowNow
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 Santos

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.

Santos experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.7 months, from September 28 to May 20, during which time the comfort level is muggy, oppressive, or miserable at least 27% of the time. The month with the most muggy days in Santos is January, with 28.3 days that are muggy or worse.

The month with the fewest muggy days in Santos is July, with 1.7 days that are muggy or worse.

Humidity Comfort Levels in Santos

Humidity Comfort Levels in SantosmuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 205%Jul 205%94%Feb 1494%Feb 14Sep 2827%Sep 2827%May 2027%May 2027%NowNowoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydrymiserablemiserable
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 28.3d27.1d27.6d20.4d10.0d3.8d1.7d3.0d6.0d13.2d18.6d25.0d

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

The windier part of the year lasts for 4.1 months, from August 22 to December 25, with average wind speeds of more than 8.5 miles per hour. The windiest month of the year in Santos is October, with an average hourly wind speed of 9.3 miles per hour.

The calmer time of year lasts for 7.9 months, from December 25 to August 22. The calmest month of the year in Santos is February, with an average hourly wind speed of 7.7 miles per hour.

Average Wind Speed in Santos

Average Wind Speed in SantoswindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphSep 259.4 mphSep 259.4 mphFeb 247.6 mphFeb 247.6 mphDec 258.5 mphDec 258.5 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) 8.27.78.18.38.38.28.48.49.29.39.28.7

The predominant average hourly wind direction in Santos varies throughout the year.

The wind is most often from the north for 1.0 months, from June 9 to July 9, with a peak percentage of 33% on June 22. The wind is most often from the east for 11 months, from July 9 to June 9, with a peak percentage of 43% on January 1.

Wind Direction in Santos

Wind Direction in SantosENEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowsoutheastnorthwest
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).

Santos 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 19, with an average temperature above 78°F. The month of the year in Santos 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 24 to October 5, with an average temperature below 70°F. The month of the year in Santos with the coolest water is August, with an average temperature of 68°F.

Average Water Temperature in Santos

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 79°F80°F79°F78°F74°F71°F69°F68°F69°F71°F74°F77°F

To characterize how pleasant the weather is in Santos 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 Santos for general outdoor tourist activities is from early May to late September, with a peak score in the second week of August.

Tourism Score in Santos

Tourism Score in Santosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.67.63.43.4NowNowtemperaturetemperature 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 Santos for hot-weather activities is from late March to late May, with a peak score in the last week of April.

Beach/Pool Score in Santos

Beach/Pool Score in Santosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.17.14.94.96.06.05.45.4NowNowtemperaturetemperature 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 Santos 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 Santos

Time Spent in Various Temperature Bands and the Growing Season in SantosJanFebMarAprMayJunJulAugSepOctNovDec0%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 Santos

Growing Degree Days in SantosJanFebMarAprMayJunJulAugSepOctNovDec0°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°F9,000°F9,000°FJul 590°FJul 590°FAug 12900°FAug 12900°FSep 221,800°FSep 221,800°FJun 309,511°FJun 309,511°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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 2.6 months, from October 20 to January 8, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Santos is November, with an average of 6.6 kWh.

The darker period of the year lasts for 2.8 months, from May 8 to August 2, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year in Santos is June, with an average of 3.7 kWh.

Average Daily Incident Shortwave Solar Energy in Santos

Average Daily Incident Shortwave Solar Energy in SantosbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhNov 306.7 kWhNov 306.7 kWhJun 243.6 kWhJun 243.6 kWhOct 206.1 kWhOct 206.1 kWhJan 86.1 kWhJan 86.1 kWhMay 84.3 kWhMay 84.3 kWhAug 24.3 kWhAug 24.3 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) 6.05.75.44.94.13.73.94.65.36.06.66.5

For the purposes of this report, the geographical coordinates of Santos are -23.961 deg latitude, -46.334 deg longitude, and 39 ft elevation.

The topography within 2 miles of Santos contains significant variations in elevation, with a maximum elevation change of 646 feet and an average elevation above sea level of 82 feet. Within 10 miles contains significant variations in elevation (3,094 feet). Within 50 miles contains large variations in elevation (4,718 feet).

The area within 2 miles of Santos is covered by artificial surfaces (56%) and water (25%), within 10 miles by water (44%) and trees (33%), and within 50 miles by water (55%) and trees (28%).

This report illustrates the typical weather in Santos, 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 is only a single weather station, Congonhas-São Paulo Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Santos.

At a distance of 50 kilometers from Santos, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Santos according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.