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Average Weather at Santarém-Maestro Wilson Fonseca Airport Brazil

At Santarém-Maestro Wilson Fonseca Airport, the wet season is overcast, the dry season is partly cloudy, and it is hot and oppressive year round. Over the course of the year, the temperature typically varies from 75°F to 92°F and is rarely below 73°F or above 94°F.

Based on the beach/pool score, the best time of year to visit Santarém-Maestro Wilson Fonseca Airport for hot-weather activities is from mid June to late August.

Climate Summary

hotJanFebMarAprMayJunJulAugSepOctNovDecNowNow54%54%23%23%overcastclearprecipitation: 11.7 inprecipitation: 11.7 in0.8 in0.8 inmuggy: 100%muggy: 100%99%99%beach/pool score: 5.9beach/pool score: 5.93.83.8
Click on each chart for more information.

Temperature

The temperature at Santarém-Maestro Wilson Fonseca Airport varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature

Average High and Low Temperature at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 1088°FJul 1088°FOct 1192°FOct 1192°F75°F75°F78°F78°FSep 391°FSep 391°FDec 491°FDec 491°FJan 2088°FJan 2088°F77°F77°F78°F78°F77°F77°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.

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

Average Hourly Temperature at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmwarmhot
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.

Klang, Malaysia (10,809 miles away) and Banos, Philippines (11,685 miles) are the far-away foreign places with temperatures most similar to Santarém-Maestro Wilson Fonseca Airport (view comparison).

Clouds

At Santarém-Maestro Wilson Fonseca Airport, 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 at Santarém-Maestro Wilson Fonseca Airport begins around June 4 and lasts for 3.7 months, ending around September 27. On July 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 54% of the time, and overcast or mostly cloudy 46% of the time.

The cloudier part of the year begins around September 27 and lasts for 8.3 months, ending around June 4. On April 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 77% of the time, and clear, mostly clear, or partly cloudy 23% of the time.

Cloud Cover Categories

Cloud Cover Categories at Santarém-Maestro Wilson Fonseca AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2354%Jul 2354%Apr 1223%Apr 1223%Jun 438%Jun 438%Sep 2739%Sep 2739%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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Santarém-Maestro Wilson Fonseca Airport varies very significantly throughout the year.

The wetter season lasts 5.7 months, from December 26 to June 16, with a greater than 46% chance of a given day being a wet day. The chance of a wet day peaks at 81% on April 19.

The drier season lasts 6.3 months, from June 16 to December 26. The smallest chance of a wet day is 11% on September 12.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 81% on April 19.

Daily Chance of Precipitation

Daily Chance of Precipitation at Santarém-Maestro Wilson Fonseca AirportwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Apr 1981%Apr 1981%Sep 1211%Sep 1211%Jan 152%Jan 152%Jun 1646%Jun 1646%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).

Rainfall

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. Santarém-Maestro Wilson Fonseca Airport experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Santarém-Maestro Wilson Fonseca Airport. The most rain falls during the 31 days centered around March 30, with an average total accumulation of 11.7 inches.

The least rain falls around September 16, with an average total accumulation of 0.8 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 inMar 3011.7 inMar 3011.7 inSep 160.8 inSep 160.8 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 liquid-equivalent snowfall.

Sun

The length of the day at Santarém-Maestro Wilson Fonseca Airport does not vary substantially over the course of the year, staying within 15 minutes of 12 hours throughout. In 2021, the shortest day is June 20, with 11 hours, 59 minutes of daylight; the longest day is December 21, with 12 hours, 16 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minSep 2212 hr, 6 minSep 2212 hr, 16 minDec 2112 hr, 16 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2011 hr, 59 minJun 2011 hr, 59 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.

The earliest sunrise is at 5:16 AM on November 7, and the latest sunrise is 31 minutes later at 5:47 AM on February 17. The earliest sunset is at 5:28 PM on October 29, and the latest sunset is 31 minutes later at 5:59 PM on February 6.

Daylight saving time (DST) is not observed at Santarém-Maestro Wilson Fonseca Airport during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMNov 75:16 AMNov 75:16 AM5:59 PMFeb 65:59 PMFeb 6Oct 295:28 PMOct 295:28 PM5:47 AMFeb 175:47 AMFeb 17daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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

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.

Humidity

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 perceived humidity level at Santarém-Maestro Wilson Fonseca Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 100% throughout.

Humidity Comfort Levels

Humidity Comfort Levels at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 299%Dec 299%100%Feb 13100%Feb 13NowNowmiserablemiserableoppressiveoppressivemuggymuggy
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.

Wind

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 at Santarém-Maestro Wilson Fonseca Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.1 months, from July 20 to November 24, with average wind speeds of more than 4.2 miles per hour. The windiest day of the year is September 18, with an average hourly wind speed of 4.8 miles per hour.

The calmer time of year lasts for 7.9 months, from November 24 to July 20. The calmest day of the year is April 27, with an average hourly wind speed of 3.6 miles per hour.

Average Wind Speed

Average Wind Speed at Santarém-Maestro Wilson Fonseca AirportwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mphSep 184.8 mphSep 184.8 mphApr 273.6 mphApr 273.6 mphJul 204.2 mphJul 204.2 mphNov 244.2 mphNov 244.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Santarém-Maestro Wilson Fonseca Airport is from the east throughout the year.

Wind Direction

Wind Direction at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastnorthsouth
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).

Best Time of Year to Visit

To characterize how pleasant the weather is at Santarém-Maestro Wilson Fonseca Airport 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 Santarém-Maestro Wilson Fonseca Airport for general outdoor tourist activities is from mid June to late August, with a peak score in the third week of July.

Tourism Score

Tourism Score at Santarém-Maestro Wilson Fonseca Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810103.83.82.52.5NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Santarém-Maestro Wilson Fonseca Airport for hot-weather activities is from mid June to late August, with a peak score in the second week of July.

Beach/Pool Score

Beach/Pool Score at Santarém-Maestro Wilson Fonseca Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.95.93.83.8NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/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.

Growing Season

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 at Santarém-Maestro Wilson Fonseca Airport 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

Time Spent in Various Temperature Bands and the Growing Season at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0%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 3100%Jul 3NowNowwarmhotcomfortable
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

Growing Degree Days at Santarém-Maestro Wilson Fonseca AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FJul 490°FJul 490°FAug 281,800°FAug 281,800°FJun 3011,477°FJun 3011,477°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 2.3 months, from August 27 to November 7, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is October 6, with an average of 6.2 kWh.

The darker period of the year lasts for 2.8 months, from March 20 to June 15, with an average daily incident shortwave energy per square meter below 4.8 kWh. The darkest day of the year is May 16, with an average of 4.4 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Santarém-Maestro Wilson Fonseca AirportbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhOct 66.2 kWhOct 66.2 kWhMay 164.4 kWhMay 164.4 kWhAug 275.8 kWhAug 275.8 kWhMar 204.8 kWhMar 204.8 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.

Topography

For the purposes of this report, the geographical coordinates of Santarém-Maestro Wilson Fonseca Airport are -2.422 deg latitude, -54.793 deg longitude, and 190 ft elevation.

The topography within 2 miles of Santarém-Maestro Wilson Fonseca Airport contains only modest variations in elevation, with a maximum elevation change of 266 feet and an average elevation above sea level of 85 feet. Within 10 miles contains only modest variations in elevation (673 feet). Within 50 miles contains significant variations in elevation (1,024 feet).

The area within 2 miles of Santarém-Maestro Wilson Fonseca Airport is covered by water (38%), trees (33%), and cropland (14%), within 10 miles by water (53%) and trees (26%), and within 50 miles by trees (45%) and water (33%).

Data Sources

This report illustrates the typical weather at Santarém-Maestro Wilson Fonseca Airport, 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

Santarém-Maestro Wilson Fonseca Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.