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Winter Weather in Rio Tinto Brazil

Daily high temperatures are around 83°F, rarely falling below 79°F or exceeding 87°F. The lowest daily average high temperature is 82°F on July 17.

Daily low temperatures are around 73°F, rarely falling below 70°F or exceeding 76°F. The lowest daily average low temperature is 72°F on August 6.

For reference, on March 10, the hottest day of the year, temperatures in Rio Tinto typically range from 77°F to 89°F, while on August 1, the coldest day of the year, they range from 72°F to 82°F.

Average High and Low Temperature in the Winter in Rio Tinto

Average High and Low Temperature in the Winter in Rio TintoJunJulAug70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FFallSpringJul 1682°FJul 1682°F73°F73°FJun 184°FJun 184°F75°F75°FAug 3183°FAug 3183°F73°F73°FJul 182°FJul 182°F73°F73°FAug 182°FAug 182°F72°F72°F
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 winter temperatures. 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 the Winter in Rio Tinto

Average Hourly Temperature in the Winter in Rio TintoJunJulAug12 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 AMFallSpringcomfortablecomfortablewarmwarmhot
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.

Siloah, Jamaica (3,383 miles away) and Mombasa, Kenya (5,146 miles) are the far-away foreign places with temperatures most similar to Rio Tinto (view comparison).

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The winter in Rio Tinto experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 40% to 27%. The lowest chance of overcast or mostly cloudy conditions is 23% on July 11.

The clearest day of the winter is July 11, with clear, mostly clear, or partly cloudy conditions 77% of the time.

For reference, on April 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 64%, while on July 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

Cloud Cover Categories in the Winter in Rio Tinto

Cloud Cover Categories in the Winter in Rio TintoJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpringApr 2236%Apr 2236%Jun 160%Jun 160%Aug 3173%Aug 3173%Jul 174%Jul 174%Aug 176%Aug 176%clearmostly clearpartly 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 Rio Tinto, the chance of a wet day over the course of the winter is very rapidly decreasing, starting the season at 54% and ending it at 22%.

For reference, the year's highest daily chance of a wet day is 56% on June 17, and its lowest chance is 5% on October 27.

Probability of Precipitation in the Winter in Rio Tinto

Probability of Precipitation in the Winter in Rio TintoJunJulAug0%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%55%55%60%60%FallSpringJun 1756%Jun 1756%Jun 154%Jun 154%Aug 3122%Aug 3122%Jul 153%Jul 153%Aug 136%Aug 136%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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Rio Tinto is very rapidly decreasing, starting the season at 6.5 inches, when it rarely exceeds 11.3 inches or falls below 2.7 inches, and ending the season at 1.8 inches, when it rarely exceeds 3.9 inches or falls below 0.2 inches.

The highest average 31-day accumulation is 6.9 inches on June 15.

Average Monthly Rainfall in the Winter in Rio Tinto

Average Monthly Rainfall in the Winter in Rio TintoJunJulAug0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inFallSpringJun 146.9 inJun 146.9 inJun 16.5 inJun 16.5 inAug 311.8 inAug 311.8 inJul 16.3 inJul 16.3 inAug 13.4 inAug 13.4 in
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 the winter in Rio Tinto, the length of the day is essentially constant. The shortest day of the winter is June 20, with 11 hours, 44 minutes of daylight and the longest day is August 31, with 11 hours, 59 minutes of daylight.

Hours of Daylight and Twilight in the Winter in Rio Tinto

Hours of Daylight and Twilight in the Winter in Rio TintoJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringJun 2011 hr, 44 minJun 2011 hr, 44 mindaydaydaydaynightAug 3111 hr, 59 minAug 3111 hr, 59 minAug 111 hr, 49 minAug 111 hr, 49 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 latest sunrise of the winter in Rio Tinto is 5:33 AM on July 17 and the earliest sunrise is 12 minutes earlier at 5:21 AM on August 31.

The earliest sunset is 5:10 PM on June 1 and the latest sunset is 11 minutes later at 5:21 PM on August 8.

Daylight saving time is not observed in Rio Tinto during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:03 AM and sets 12 hours, 31 minutes later, at 5:34 PM, while on June 20, the shortest day of the year, it rises at 5:30 AM and sets 11 hours, 44 minutes later, at 5:13 PM.

Sunrise & Sunset with Twilight in the Winter in Rio Tinto

Sunrise & Sunset with Twilight in the Winter in Rio TintoJunJulAug12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMFallSpring5:21 AM5:21 AMAug 315:19 PMAug 315:19 PM5:30 AM5:30 AMAug 85:21 PMAug 85:21 PM5:25 AM5:25 AMJun 15:10 PMJun 15:10 PM5:33 AM5:33 AMJul 175:19 PMJul 175:19 PM5:32 AM5:32 AMJul 15:16 PMJul 15:16 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the winter. 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 the Winter in Rio Tinto

Solar Elevation and Azimuth in the Winter in Rio TintoJunJulAug12 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 AMFallSpring00102020303040505060608000101020303040405060
northeastsouthwest
Solar elevation and azimuth in the the winter of 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 the winter of 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 the Winter in Rio Tinto

Moon Rise, Set & Phases in the Winter in Rio TintoJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringMay 812:23 AMMay 812:23 AMMay 2310:54 AMMay 2310:54 AMJun 69:38 AMJun 69:38 AMJun 2110:09 PMJun 2110:09 PMJul 57:58 PMJul 57:58 PMJul 217:18 AMJul 217:18 AMAug 48:14 AMAug 48:14 AMAug 193:26 PMAug 193:26 PMSep 210:56 PMSep 210:56 PMSep 1711:35 PMSep 1711:35 PM5:35 AM5:35 AM4:25 PM4:25 PM5:14 AM5:14 AM5:20 AM5:20 AM4:55 PM4:55 PM5:56 AM5:56 AM5:08 AM5:08 AM4:42 PM4:42 PM5:40 AM5:40 AM5:37 AM5:37 AM5:39 PM5:39 PM5:25 PM5:25 PM6:05 AM6:05 AM4:59 AM4:59 AM5:00 PM5:00 PM5:28 AM5:28 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.

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 Rio Tinto is essentially constant during the winter, remaining within 1% of 99% throughout.

For reference, on January 29, the muggiest day of the year, there are muggy conditions 100% of the time, while on September 18, the least muggy day of the year, there are muggy conditions 98% of the time.

Humidity Comfort Levels in the Winter in Rio Tinto

Humidity Comfort Levels in the Winter in Rio TintoJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%FallSpringJun 1100%Jun 1100%Aug 3199%Aug 3199%Jul 1100%Jul 1100%Aug 199%Aug 199%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 Rio Tinto is increasing during the winter, increasing from 11.7 miles per hour to 13.5 miles per hour over the course of the season.

For reference, on August 29, the windiest day of the year, the daily average wind speed is 13.5 miles per hour, while on March 27, the calmest day of the year, the daily average wind speed is 10.2 miles per hour.

The highest daily average wind speed during the winter is 13.5 miles per hour on August 29.

Average Wind Speed in the Winter in Rio Tinto

Average Wind Speed in the Winter in Rio TintoJunJulAug0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mphFallSpringAug 2913.5 mphAug 2913.5 mphJun 111.7 mphJun 111.7 mphJul 112.4 mphJul 112.4 mphAug 113.2 mphAug 113.2 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Rio Tinto during the winter is predominantly out of the east from June 1 to June 9 and from August 19 to August 31 and the south from June 9 to August 19.

Wind Direction in the Winter in Rio Tinto

Wind Direction in the Winter in Rio TintoESEJunJulAug0%100%20%80%40%60%60%40%80%20%100%0%FallSpringsoutheast
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).

Rio Tinto 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 surface water temperature in Rio Tinto is gradually decreasing during the winter, falling by 3°F, from 82°F to 79°F, over the course of the season.

The lowest average surface water temperature during the winter is 79°F on August 17.

Average Water Temperature in the Winter in Rio Tinto

Average Water Temperature in the Winter in Rio TintoJunJulAug78°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°FFallSpringAug 1779°FAug 1779°FJun 182°FJun 182°FAug 3179°FAug 3179°FJul 180°FJul 180°FAug 179°FAug 179°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Rio Tinto 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 the Winter in Rio Tinto

Time Spent in Various Temperature Bands and the Growing Season in the Winter in Rio TintoJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpring100%Jul 17100%Jul 17comfortablewarmhot
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 Rio Tinto are very rapidly decreasing during the winter, decreasing by 8,343°F, from 9,965°F to 1,622°F, over the course of the season.

Growing Degree Days in the Winter in Rio Tinto

Growing Degree Days in the Winter in Rio TintoJunJulAug2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FFallSpringJun 19,965°FJun 19,965°FAug 311,622°FAug 311,622°FJul 11°FJul 11°FAug 1824°FAug 1824°F
The average growing degree days accumulated over the course of the winter, 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 Rio Tinto is increasing during the winter, rising by 1.2 kWh, from 5.5 kWh to 6.7 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 5.4 kWh on June 22.

Average Daily Incident Shortwave Solar Energy in the Winter in Rio Tinto

Average Daily Incident Shortwave Solar Energy in the Winter in Rio TintoJunJulAug0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhFallSpringJun 225.4 kWhJun 225.4 kWhJun 15.5 kWhJun 15.5 kWhAug 316.7 kWhAug 316.7 kWhAug 16.0 kWhAug 16.0 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 Rio Tinto are -6.803 deg latitude, -35.081 deg longitude, and 115 ft elevation.

The topography within 2 miles of Rio Tinto contains only modest variations in elevation, with a maximum elevation change of 456 feet and an average elevation above sea level of 143 feet. Within 10 miles contains only modest variations in elevation (738 feet). Within 50 miles contains significant variations in elevation (2,113 feet).

The area within 2 miles of Rio Tinto is covered by cropland (48%), trees (23%), shrubs (14%), and grassland (12%), within 10 miles by cropland (39%) and trees (26%), and within 50 miles by water (45%) and cropland (19%).

This report illustrates the typical weather in Rio Tinto, 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 Rio Tinto.

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

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