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May Weather in São Mateus do Maranhão Brazil

Daily high temperatures are around 85°F, rarely falling below 81°F or exceeding 88°F.

Daily low temperatures are around 73°F, rarely falling below 71°F or exceeding 76°F.

For reference, on October 4, the hottest day of the year, temperatures in São Mateus do Maranhão typically range from 76°F to 101°F, while on July 6, the coldest day of the year, they range from 71°F to 87°F.

Average High and Low Temperature in May in São Mateus do Maranhão

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 hourly average temperatures for the quarter of the year centered on May. 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.

Average Hourly Temperature in May in São Mateus do Maranhão

Average Hourly Temperature in May in São Mateus do MaranhãoMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMAprJuncomfortablewarmwarmhot
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.

Solāpur, India (8,310 miles away); Pālghāt, India (8,391 miles); and Ho Chi Minh City, Vietnam (10,415 miles) are the far-away foreign places with temperatures most similar to São Mateus do Maranhão (view comparison).

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The month of May in São Mateus do Maranhão experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 81% to 61%.

The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 39% of the time.

For reference, on March 31, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 86%, while on July 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.

Cloud Cover Categories in May in São Mateus do Maranhão

Cloud Cover Categories in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunMay 119%May 119%May 3139%May 3139%May 1124%May 1124%May 2132%May 2132%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In São Mateus do Maranhão, the chance of a wet day over the course of May is very rapidly decreasing, starting the month at 64% and ending it at 26%.

For reference, the year's highest daily chance of a wet day is 83% on March 21, and its lowest chance is 3% on August 10.

Probability of Precipitation in May in São Mateus do Maranhão

Probability of Precipitation in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%AprJunMay 164%May 164%May 3126%May 3126%May 1151%May 1151%May 2136%May 2136%rain
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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during May in São Mateus do Maranhão is very rapidly decreasing, starting the month at 8.1 inches, when it rarely exceeds 15.5 inches or falls below 1.6 inches, and ending the month at 2.4 inches, when it rarely exceeds 5.2 inches or falls below 0.3 inches.

Average Monthly Rainfall in May in São Mateus do Maranhão

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.

Over the course of May in São Mateus do Maranhão, the length of the day is essentially constant. The shortest day of the month is May 31, with 11 hours, 54 minutes of daylight and the longest day is May 1, with 11 hours, 58 minutes of daylight.

Hours of Daylight and Twilight in May in São Mateus do Maranhão

Hours of Daylight and Twilight in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAprJundaydaydaydaynightMay 111 hr, 58 minMay 111 hr, 58 minMay 3111 hr, 54 minMay 3111 hr, 54 minMay 1611 hr, 56 minMay 1611 hr, 56 min
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 of the month in São Mateus do Maranhão is 5:55 AM on May 5 and the latest sunrise is 2 minutes, 44 seconds later at 5:58 AM on May 31.

The latest sunset is 5:53 PM on May 1 and the earliest sunset is 1 minute, 48 seconds earlier at 5:52 PM on May 20.

Daylight saving time is not observed in São Mateus do Maranhão during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:45 AM and sets 12 hours, 22 minutes later, at 6:07 PM, while on June 20, the shortest day of the year, it rises at 6:02 AM and sets 11 hours, 53 minutes later, at 5:56 PM.

Sunrise & Sunset with Twilight in May in São Mateus do Maranhão

Sunrise & Sunset with Twilight in May in São Mateus do MaranhãoMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAprJun5:55 AM5:55 AMMay 55:53 PMMay 55:53 PM5:56 AM5:56 AMMay 205:52 PMMay 205:52 PM5:58 AM5:58 AMMay 315:52 PMMay 315:52 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of May. 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 May in São Mateus do Maranhão

Solar Elevation and Azimuth in May in São Mateus do MaranhãoMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMAprJun00101020202030304040505050606070000101020203030304040505060606070
northeastsouthwest
Solar elevation and azimuth over the course of May 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 May 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. 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.

Moon Rise, Set & Phases in May in São Mateus do Maranhão

Moon Rise, Set & Phases in May in São Mateus do MaranhãoMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAprJunApr 83:22 PMApr 83:22 PMApr 238:50 PMApr 238:50 PMMay 812:23 AMMay 812:23 AMMay 2310:54 AMMay 2310:54 AMJun 69:38 AMJun 69:38 AMJun 2110:09 PMJun 2110:09 PM5:40 AM5:40 AM6:02 PM6:02 PM5:44 PM5:44 PM6:15 AM6:15 AM6:10 AM6:10 AM6:25 PM6:25 PM5:08 PM5:08 PM5:47 AM5:47 AM5:53 AM5:53 AM6:06 PM6:06 PM5:40 PM5:40 PM6:28 AM6:28 AM
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.
May 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
50%-12:35 PMWSW-6:16 AMS232,375 mi
2
40%12:50 AMESE1:26 PMWSW-7:09 AMS230,027 mi
3
28%1:43 AMESE2:15 PMW-8:00 AMS228,001 mi
4
18%2:35 AME3:02 PMW-8:49 AMN226,500 mi
5
9%3:27 AME3:50 PMW-9:38 AMN225,727 mi
6
3%4:19 AME4:38 PMWNW-10:28 AMN225,843 mi
7
0%5:13 AMENE5:30 PMWNW-11:20 AMN226,930 mi
8
0%6:10 AMENE6:25 PMWNW-12:16 PMN228,960 mi
9
3%7:09 AMENE7:22 PMWNW-1:15 PMN231,788 mi
10
9%8:10 AMENE8:22 PMWNW-2:16 PMN235,170 mi
11
16%9:10 AMENE9:21 PMWNW-3:15 PMN238,799 mi
12
25%10:06 AMENE10:17 PMWNW-4:12 PMN242,356 mi
13
34%10:58 AMENE11:09 PMWNW-5:05 PMN245,556 mi
14
44%11:46 AMENE11:57 PMWNW-5:52 PMN248,177 mi
15
50%12:29 PMENE--6:36 PMN250,067 mi
16
64%-12:41 AMWNW1:09 PME7:17 PMN251,151 mi
17
73%-1:23 AMW1:47 PME7:56 PMN251,421 mi
18
81%-2:04 AMW2:24 PME8:34 PMN250,930 mi
19
88%-2:45 AMW3:02 PME9:13 PMS249,781 mi
20
94%-3:26 AMW3:41 PMESE9:54 PMS248,108 mi
21
98%-4:10 AMWSW4:23 PMESE10:38 PMS246,065 mi
22
100%-4:57 AMWSW5:08 PMESE11:26 PMS243,808 mi
23
100%-5:47 AMWSW5:58 PMESE--
24
100%-6:42 AMWSW6:53 PMESE12:19 AMS241,481 mi
25
97%-7:40 AMWSW7:51 PMESE1:16 AMS239,204 mi
26
92%-8:39 AMWSW8:50 PMESE2:15 AMS237,060 mi
27
85%-9:36 AMWSW9:49 PMESE3:14 AMS235,101 mi
28
76%-10:31 AMWSW10:45 PMESE4:12 AMS233,351 mi
29
66%-11:23 AMWSW11:39 PMESE5:06 AMS231,822 mi
30
50%-12:11 PMW-5:56 AMS230,537 mi
31
42%12:30 AME12:58 PMW-6:45 AMS229,542 mi

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 São Mateus do Maranhão is essentially constant during May, remaining around 100% throughout.

For reference, on February 17, the muggiest day of the year, there are muggy conditions 100% of the time, while on September 16, the least muggy day of the year, there are muggy conditions 66% of the time.

Humidity Comfort Levels in May in São Mateus do Maranhão

Humidity Comfort Levels in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AprJunMay 1100%May 1100%May 31100%May 31100%May 11100%May 11100%May 21100%May 21100%miserablemiserableoppressiveoppressivemuggymuggy
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.

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 Mateus do Maranhão is essentially constant during May, remaining within 0.2 miles per hour of 3.2 miles per hour throughout.

For reference, on October 20, the windiest day of the year, the daily average wind speed is 5.8 miles per hour, while on April 17, the calmest day of the year, the daily average wind speed is 2.9 miles per hour.

Average Wind Speed in May in São Mateus do Maranhão

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in São Mateus do Maranhão throughout May is predominantly from the east, with a peak proportion of 62% on May 31.

Wind Direction in May in São Mateus do Maranhão

Wind Direction in May in São Mateus do MaranhãoNEMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%AprJuneastnorthwestsouth
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).

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 Mateus do Maranhão 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 May in São Mateus do Maranhão

Time Spent in Various Temperature Bands and the Growing Season in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJun100%May 16100%May 16comfortablewarmhot
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.

The average accumulated growing degree days in São Mateus do Maranhão are rapidly increasing during May, increasing by 857°F, from 9,281°F to 10,138°F, over the course of the month.

Growing Degree Days in May in São Mateus do Maranhão

Growing Degree Days in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031319,000°F9,000°F9,200°F9,200°F9,400°F9,400°F9,600°F9,600°F9,800°F9,800°F10,000°F10,000°F10,200°F10,200°F10,400°F10,400°FAprJunMay 19,281°FMay 19,281°FMay 3110,138°FMay 3110,138°FMay 119,562°FMay 119,562°FMay 219,850°FMay 219,850°F
The average growing degree days accumulated over the course of May, 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 in São Mateus do Maranhão is gradually increasing during May, rising by 0.5 kWh, from 4.5 kWh to 5.1 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in May in São Mateus do Maranhão

Average Daily Incident Shortwave Solar Energy in May in São Mateus do MaranhãoMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWhAprJunMay 14.5 kWhMay 14.5 kWhMay 315.1 kWhMay 315.1 kWhMay 114.7 kWhMay 114.7 kWhMay 214.9 kWhMay 214.9 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of São Mateus do Maranhão are -4.042 deg latitude, -44.475 deg longitude, and 154 ft elevation.

The topography within 2 miles of São Mateus do Maranhão is essentially flat, with a maximum elevation change of 95 feet and an average elevation above sea level of 141 feet. Within 10 miles is essentially flat (256 feet). Within 50 miles contains only modest variations in elevation (623 feet).

The area within 2 miles of São Mateus do Maranhão is covered by shrubs (35%), trees (31%), and grassland (24%), within 10 miles by trees (39%) and shrubs (31%), and within 50 miles by trees (49%) and shrubs (29%).

This report illustrates the typical weather in São Mateus do Maranhão, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

São Mateus do Maranhão is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of São Mateus do Maranhão, according to the International Standard Atmosphere .

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.

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.

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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.

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