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Winter Weather in Brazzaville Congo - Brazzaville

Daily high temperatures are around 84°F, rarely falling below 77°F or exceeding 91°F. The lowest daily average high temperature is 82°F on July 11.

Daily low temperatures are around 69°F, rarely falling below 64°F or exceeding 74°F. The lowest daily average low temperature is 67°F on July 19.

For reference, on April 2, the hottest day of the year, temperatures in Brazzaville typically range from 74°F to 90°F, while on July 17, the coldest day of the year, they range from 67°F to 82°F.

Average High and Low Temperature in the Winter in Brazzaville

Average High and Low Temperature in the Winter in BrazzavilleJunJulAug65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FFallSpringJul 1182°FJul 1182°F67°F67°FJun 185°FJun 185°F71°F71°FAug 3186°FAug 3186°F70°F70°FAug 183°FAug 183°F68°F68°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 Brazzaville

Average Hourly Temperature in the Winter in BrazzavilleJunJulAug12 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 AMFallSpringcomfortablecomfortablewarmwarmwarmhothot
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.

Santo Domingo, Dominican Republic (6,010 miles away) is the far-away foreign place with temperatures most similar to Brazzaville (view comparison).

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The winter in Brazzaville experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 47% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 40% on July 8.

The clearest day of the winter is July 8, with clear, mostly clear, or partly cloudy conditions 60% of the time.

For reference, on December 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 80%, while on July 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 60%.

Cloud Cover Categories in the Winter in Brazzaville

Cloud Cover Categories in the Winter in BrazzavilleJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpringDec 1520%Dec 1520%Jun 146%Jun 146%Aug 3149%Aug 3149%Jul 159%Jul 159%Aug 157%Aug 157%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 Brazzaville, the chance of a wet day over the course of the winter is very rapidly decreasing, starting the season at 27% and ending it at 14%.

For reference, the year's highest daily chance of a wet day is 87% on November 11, and its lowest chance is 2% on July 1.

Probability of Precipitation in the Winter in Brazzaville

Probability of Precipitation in the Winter in BrazzavilleJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%FallSpringJun 302%Jun 302%Jun 127%Jun 127%Aug 3114%Aug 3114%Aug 13%Aug 13%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 Brazzaville is rapidly decreasing, starting the season at 2.5 inches, when it rarely exceeds 4.8 inches or falls below 0.4 inches, and ending the season at 0.9 inches, when it rarely exceeds 2.1 inches or falls below 0.1 inches.

The lowest average 31-day accumulation is 0.1 inches on July 8.

Average Monthly Rainfall in the Winter in Brazzaville

Average Monthly Rainfall in the Winter in BrazzavilleJunJulAug0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inFallSpringJul 80.1 inJul 80.1 inJun 12.5 inJun 12.5 inAug 310.9 inAug 310.9 inAug 10.2 inAug 10.2 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 Brazzaville, the length of the day is essentially constant. The shortest day of the winter is June 20, with 11 hours, 53 minutes of daylight and the longest day is August 31, with 12 hours, 2 minutes of daylight.

Hours of Daylight and Twilight in the Winter in Brazzaville

Hours of Daylight and Twilight in the Winter in BrazzavilleJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringJun 2011 hr, 53 minJun 2011 hr, 53 mindaydaydaydaynightAug 3112 hr, 2 minAug 3112 hr, 2 minAug 111 hr, 56 minAug 111 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 latest sunrise of the winter in Brazzaville is 6:08 AM on July 19 and the earliest sunrise is 10 minutes earlier at 5:58 AM on August 31.

The earliest sunset is 5:53 PM on June 1 and the latest sunset is 10 minutes later at 6:03 PM on August 3.

Daylight saving time is not observed in Brazzaville 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 6:08 PM, while on June 20, the shortest day of the year, it rises at 6:04 AM and sets 11 hours, 53 minutes later, at 5:56 PM.

Sunrise & Sunset with Twilight in the Winter in Brazzaville

Sunrise & Sunset with Twilight in the Winter in BrazzavilleJunJulAug12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMFallSpring5:58 AM5:58 AMAug 315:59 PMAug 315:59 PM6:06 AM6:06 AMAug 36:03 PMAug 36:03 PM6:00 AM6:00 AMJun 15:53 PMJun 15:53 PM6:06 AM6:06 AMJul 15:59 PMJul 15:59 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 Brazzaville

Solar Elevation and Azimuth in the Winter in BrazzavilleJunJulAug12 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 AMFallSpring001020203030405050606080001010203030404050606070
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 Brazzaville

Moon Rise, Set & Phases in the Winter in BrazzavilleJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringMay 84:23 AMMay 84:23 AMMay 232:54 PMMay 232:54 PMJun 61:38 PMJun 61:38 PMJun 222:09 AMJun 222:09 AMJul 511:58 PMJul 511:58 PMJul 2111:18 AMJul 2111:18 AMAug 412:14 PMAug 412:14 PMAug 197:26 PMAug 197:26 PMSep 32:56 AMSep 32:56 AMSep 183:35 AMSep 183:35 AM6:02 AM6:02 AM6:16 PM6:16 PM5:50 PM5:50 PM6:34 AM6:34 AM5:56 PM5:56 PM5:31 PM5:31 PM6:20 AM6:20 AM5:32 AM5:32 AM5:17 PM5:17 PM6:05 AM6:05 AM6:05 AM6:05 AM5:58 PM5:58 PM6:34 AM6:34 AM6:09 AM6:09 AM6:24 PM6:24 PM5:32 PM5:32 PM6:00 AM6:00 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 Brazzaville is very rapidly decreasing during the winter, falling from 97% to 66% over the course of the season.

The lowest chance of a muggy day during the winter is 47% on July 29.

For reference, on April 22, the muggiest day of the year, there are muggy conditions 100% of the time, while on July 29, the least muggy day of the year, there are muggy conditions 47% of the time.

Humidity Comfort Levels in the Winter in Brazzaville

Humidity Comfort Levels in the Winter in BrazzavilleJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%FallSpringJul 2947%Jul 2947%Jun 197%Jun 197%Aug 3166%Aug 3166%Jul 172%Jul 172%oppressiveoppressivemuggymuggyhumidhumidmiserablemiserablecomfortablecomfortable
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 Brazzaville is increasing during the winter, increasing from 4.1 miles per hour to 5.7 miles per hour over the course of the season.

For reference, on August 12, the windiest day of the year, the daily average wind speed is 6.0 miles per hour, while on November 30, the calmest day of the year, the daily average wind speed is 3.4 miles per hour.

The highest daily average wind speed during the winter is 6.0 miles per hour on August 12.

Average Wind Speed in the Winter in Brazzaville

Average Wind Speed in the Winter in BrazzavilleJunJulAug0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mphFallSpringAug 126.0 mphAug 126.0 mphJun 14.1 mphJun 14.1 mphAug 315.7 mphAug 315.7 mphJul 15.0 mphJul 15.0 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 Brazzaville during the winter is predominantly out of the south from June 1 to June 13 and the west from June 13 to August 31.

Wind Direction in the Winter in Brazzaville

Wind Direction in the Winter in BrazzavilleESWJunJulAug0%100%20%80%40%60%60%40%80%20%100%0%FallSpringwestsoutheastnorth
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 Brazzaville 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 Brazzaville

Time Spent in Various Temperature Bands and the Growing Season in the Winter in BrazzavilleJunJulAug0%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 17comfortablewarmhotcool
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 Brazzaville are very rapidly decreasing during the winter, decreasing by 7,906°F, from 9,410°F to 1,505°F, over the course of the season.

Growing Degree Days in the Winter in Brazzaville

Growing Degree Days in the Winter in BrazzavilleJunJulAug2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FFallSpringJun 19,410°FJun 19,410°FAug 311,505°FAug 311,505°FJul 11°FJul 11°FAug 1736°FAug 1736°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 Brazzaville is gradually increasing during the winter, rising by 0.7 kWh, from 4.8 kWh to 5.5 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the winter is 5.5 kWh on August 29.

Average Daily Incident Shortwave Solar Energy in the Winter in Brazzaville

Average Daily Incident Shortwave Solar Energy in the Winter in BrazzavilleJunJulAug0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhFallSpringAug 295.5 kWhAug 295.5 kWhJun 14.8 kWhJun 14.8 kWhJul 14.8 kWhJul 14.8 kWhAug 15.2 kWhAug 15.2 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 Brazzaville are -4.266 deg latitude, 15.283 deg longitude, and 932 ft elevation.

The topography within 2 miles of Brazzaville contains only modest variations in elevation, with a maximum elevation change of 266 feet and an average elevation above sea level of 928 feet. Within 10 miles contains only modest variations in elevation (1,070 feet). Within 50 miles also contains very significant variations in elevation (1,903 feet).

The area within 2 miles of Brazzaville is covered by artificial surfaces (72%) and water (28%), within 10 miles by shrubs (35%) and water (18%), and within 50 miles by shrubs (43%) and trees (36%).

This report illustrates the typical weather in Brazzaville, 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 Brazzaville.

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