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Climate and Average Weather Year Round in Ouésso Congo - Brazzaville

The climate in Ouésso is hot, oppressive, and overcast. Over the course of the year, the temperature typically varies from 71°F to 90°F and is rarely below 66°F or above 97°F.

Based on the beach/pool score, the best times of year to visit Ouésso for hot-weather activities are from early June to late August and from early December to late January.

Climate in Ouésso

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow34%34%19%19%overcastprecipitation: 7.7 inprecipitation: 7.7 in1.5 in1.5 inmuggy: 100%muggy: 100%88%88%beach/pool score: 6.1beach/pool score: 6.14.54.5
Ouésso weather by month. Click on each chart for more information.

Average Temperature in Ouésso

The temperature in Ouésso varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature in Ouésso

Average High and Low Temperature in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1488°FJan 1488°FFeb 1990°FFeb 1990°F71°F71°F72°F72°FApr 1789°FApr 1789°FJun 1785°FJun 1785°FSep 2085°FSep 2085°F73°F73°F72°F72°F71°F71°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 in Ouésso

Average Hourly Temperature in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablewarmwarmhothotcomfortable
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.

Barinitas, Venezuela (5,966 miles away) is the far-away foreign place with temperatures most similar to Ouésso (view comparison).

Compare Ouésso to another city:

Clouds

In Ouésso, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Ouésso begins around May 24 and lasts for 3.0 months, ending around August 23. On July 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 34% of the time, and overcast or mostly cloudy 66% of the time.

The cloudier part of the year begins around August 23 and lasts for 9.0 months, ending around May 24. On March 29, the cloudiest day of the year, the sky is overcast or mostly cloudy 81% of the time, and clear, mostly clear, or partly cloudy 19% of the time.

Cloud Cover Categories in Ouésso

Cloud Cover Categories in OuéssoclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 234%Jul 234%Mar 2919%Mar 2919%May 2427%May 2427%Aug 2327%Aug 2327%NowNowmostly clearpartly cloudymostly cloudyovercastclear
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 in Ouésso varies very significantly throughout the year.

The wetter season lasts 8.9 months, from March 6 to December 1, with a greater than 49% chance of a given day being a wet day. The chance of a wet day peaks at 77% on September 27.

The drier season lasts 3.1 months, from December 1 to March 6. The smallest chance of a wet day is 20% on January 10.

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 77% on September 27.

Daily Chance of Precipitation in Ouésso

Daily Chance of Precipitation in OuéssowetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 2777%Sep 2777%Jan 1020%Jan 1020%Jan 122%Jan 122%Mar 649%Mar 649%Dec 149%Dec 149%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. Ouésso experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Ouésso. The most rain falls during the 31 days centered around October 1, with an average total accumulation of 7.7 inches.

The least rain falls around January 10, with an average total accumulation of 1.5 inches.

Average Monthly Rainfall in Ouésso

Average Monthly Rainfall in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inOct 17.7 inOct 17.7 inJan 101.5 inJan 101.5 inMay 134.8 inMay 134.8 inMar 284.7 inMar 284.7 inJul 163.1 inJul 163.1 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 in Ouésso does not vary substantially over the course of the year, staying within 12 minutes of 12 hours throughout. In 2021, the shortest day is December 21, with 12 hours, 2 minutes of daylight; the longest day is June 21, with 12 hours, 13 minutes of daylight.

Hours of Daylight and Twilight in Ouésso

Hours of Daylight and Twilight in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2012 hr, 13 minJun 2112 hr, 13 minJun 2112 hr, 7 minSep 2212 hr, 7 minSep 2212 hr, 2 minDec 2112 hr, 2 minDec 21nightnightdayNowNow
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 5:37 AM on October 31, and the latest sunrise is 31 minutes later at 6:08 AM on February 9. The earliest sunset is at 5:41 PM on November 4, and the latest sunset is 31 minutes later at 6:11 PM on February 14.

Daylight saving time (DST) is not observed in Ouésso during 2021.

Sunrise & Sunset with Twilight in Ouésso

Sunrise & Sunset with Twilight in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMOct 315:37 AMOct 315:37 AM6:11 PMFeb 146:11 PMFeb 14Nov 45:41 PMNov 45:41 PM6:08 AMFeb 96:08 AMFeb 9daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 in Ouésso

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.

Ouésso experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 11 months, from February 3 to January 2, during which time the comfort level is muggy, oppressive, or miserable at least 91% of the time. The muggiest day of the year is November 4, with muggy conditions 100% of the time.

The least muggy day of the year is January 18, with muggy conditions 88% of the time.

Humidity Comfort Levels in Ouésso

Humidity Comfort Levels in OuéssomuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 1888%Jan 1888%100%Nov 4100%Nov 4NowNowoppressiveoppressivemuggymuggymiserablemiserablehumidhumid
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 in Ouésso does not vary significantly over the course of the year, remaining within 0.2 miles per hour of 1.6 miles per hour throughout.

Average Wind Speed in Ouésso

Average Wind Speed in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0.0 mph0.0 mph0.5 mph0.5 mph1.0 mph1.0 mph1.5 mph1.5 mph2.0 mph2.0 mph2.5 mph2.5 mphJan 241.8 mphJan 241.8 mphOct 101.5 mphOct 101.5 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 in Ouésso varies throughout the year.

The wind is most often from the west for 4.1 months, from June 23 to October 27, with a peak percentage of 55% on July 25. The wind is most often from the east for 2.6 weeks, from October 27 to November 14, with a peak percentage of 34% on November 13. The wind is most often from the south for 7.3 months, from November 14 to June 23, with a peak percentage of 33% on January 1.

Wind Direction in Ouésso

Wind Direction in OuéssoSWESJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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 in Ouésso 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 Ouésso for general outdoor tourist activities is from mid June to late August, with a peak score in the second week of July.

Tourism Score in Ouésso

Tourism Score in Ouéssobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.64.62.92.94.04.04.04.03.53.5NowNowprecipitationprecipitation 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 times of year to visit Ouésso for hot-weather activities are from early June to late August and from early December to late January, with a peak score in the second week of July.

Beach/Pool Score in Ouésso

Beach/Pool Score in Ouéssobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.16.14.54.55.85.8NowNowprecipitationprecipitationtemperaturetemperaturebeach/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 in Ouésso 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 Ouésso

Time Spent in Various Temperature Bands and the Growing Season in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0%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 3NowNowcomfortablewarmhotsweltering
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 Ouésso

Growing Degree Days in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FJan 390°FJan 390°FDec 3110,174°FDec 3110,174°FNowNow
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 per square meter does not vary significantly over the course of the year, remaining within 0.3 kilowatt-hours of 4.8 kilowatt-hours throughout.

Average Daily Incident Shortwave Solar Energy in Ouésso

Average Daily Incident Shortwave Solar Energy in OuéssoJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhFeb 195.0 kWhFeb 195.0 kWhJul 74.5 kWhJul 74.5 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 Ouésso are 1.614 deg latitude, 16.052 deg longitude, and 1,142 ft elevation.

The topography within 2 miles of Ouésso contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 1,137 feet. Within 10 miles contains only modest variations in elevation (696 feet). Within 50 miles contains significant variations in elevation (1,217 feet).

The area within 2 miles of Ouésso is covered by trees (38%), grassland (26%), water (16%), and shrubs (14%), within 10 miles by trees (87%), and within 50 miles by trees (96%).

Data Sources

This report illustrates the typical weather in Ouésso, 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, Ouesso, in our network suitable to be used as a proxy for the historical temperature and dew point records of Ouésso.

At a distance of 2 kilometer from Ouésso, 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 Ouésso 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 © 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.