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Average Weather in Dolisie Congo - Brazzaville

In Dolisie, the wet season is hot, oppressive, and overcast and the dry season is warm, muggy, and partly cloudy. Over the course of the year, the temperature typically varies from 67°F to 88°F and is rarely below 64°F or above 91°F.

Based on the beach/pool score, the best time of year to visit Dolisie for hot-weather activities is from late May to early October.

Climate Summary

hotwarmJanFebMarAprMayJunJulAugSepOctNovDec62%62%16%16%overcastprecipitation: 9.3 inprecipitation: 9.3 in0.0 in0.0 inmuggy: 100%muggy: 100%39%39%beach/pool score: 7.4beach/pool score: 7.44.14.1
Click on each chart for more information.

Temperature

The hot season lasts for 3.6 months, from January 22 to May 10, with an average daily high temperature above 86°F. The hottest day of the year is March 15, with an average high of 88°F and low of 73°F.

The cool season lasts for 2.3 months, from June 25 to September 3, with an average daily high temperature below 80°F. The coldest day of the year is July 25, with an average low of 67°F and high of 78°F.

Average High and Low Temperature

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 in DolisieJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcomfortablecomfortablewarmwarmhotwarm
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.

Hickam Field, Hawaii, United States (11,108 miles away); Veragua Arriba, Dominican Republic (5,868 miles); and Nova Viçosa, Brazil (3,644 miles) are the far-away foreign places with temperatures most similar to Dolisie (view comparison).

Clouds

In Dolisie, 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 in Dolisie begins around May 28 and lasts for 4.0 months, ending around September 29. On July 8, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 62% of the time, and overcast or mostly cloudy 38% of the time.

The cloudier part of the year begins around September 29 and lasts for 8.0 months, ending around May 28. On April 23, the cloudiest day of the year, the sky is overcast or mostly cloudy 84% of the time, and clear, mostly clear, or partly cloudy 16% of the time.

Cloud Cover Categories

Cloud Cover Categories in DolisieclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 862%Jul 862%Apr 2316%Apr 2316%May 2839%May 2839%Sep 2940%Sep 2940%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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Dolisie varies very significantly throughout the year.

The wetter season lasts 7.2 months, from October 12 to May 18, with a greater than 43% chance of a given day being a wet day. The chance of a wet day peaks at 86% on November 20.

The drier season lasts 4.8 months, from May 18 to October 12. The smallest chance of a wet day is 0% on June 29.

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 86% on November 20.

Daily Chance of Precipitation

Daily Chance of Precipitation in DolisiewetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 2086%Nov 2086%Jun 290%Jun 290%Jan 164%Jan 164%Oct 1243%Oct 1243%May 1843%May 1843%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 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. Dolisie experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.0 months, from September 16 to June 15, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around November 18, with an average total accumulation of 9.3 inches.

The rainless period of the year lasts for 3.0 months, from June 15 to September 16. The least rain falls around July 11, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall

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 Dolisie does not vary substantially over the course of the year, staying within 22 minutes of 12 hours throughout. In 2018, the shortest day is June 21, with 11 hours, 53 minutes of daylight; the longest day is December 21, with 12 hours, 22 minutes of daylight.

Hours of Daylight and Twilight

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 5:44 AM on November 10, and the latest sunrise is 34 minutes later at 6:18 AM on July 20. The earliest sunset is at 6:00 PM on October 25, and the latest sunset is 31 minutes later at 6:31 PM on February 3.

Daylight saving time (DST) is not observed in Dolisie during 2018.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in DolisieJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 105:44 AMNov 105:44 AM6:31 PMFeb 36:31 PMFeb 3Oct 256:00 PMOct 256:00 PM6:18 AMJul 206:18 AMJul 20daynightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. 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.

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.

Dolisie experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 11 months, from August 23 to July 10, during which time the comfort level is muggy, oppressive, or miserable at least 54% of the time. The muggiest day of the year is April 30, with muggy conditions 100% of the time.

The least muggy day of the year is July 29, with muggy conditions 39% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in DolisiemuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2939%Jul 2939%100%Apr 30100%Apr 30miserablemiserableoppressiveoppressivemuggymuggyhumidhumid
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 Dolisie experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 2.9 months, from July 17 to October 13, with average wind speeds of more than 2.3 miles per hour. The windiest day of the year is August 31, with an average hourly wind speed of 3.2 miles per hour.

The calmer time of year lasts for 9.1 months, from October 13 to July 17. The calmest day of the year is May 3, with an average hourly wind speed of 1.4 miles per hour.

Average Wind Speed

Average Wind Speed in DolisiewindyJanFebMarAprMayJunJulAugSepOctNovDec0.0 mph0.5 mph1.0 mph1.5 mph2.0 mph2.5 mph3.0 mph3.5 mph4.0 mph4.5 mphAug 313.2 mphAug 313.2 mphMay 31.4 mphMay 31.4 mphJul 172.3 mphJul 172.3 mphOct 132.3 mphOct 132.3 mph
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 Dolisie varies throughout the year.

The wind is most often from the south for 3.7 months, from February 26 to June 17 and for 1.7 weeks, from December 1 to December 13, with a peak percentage of 54% on May 4. The wind is most often from the west for 5.5 months, from June 17 to December 1 and for 2.5 months, from December 13 to February 26, with a peak percentage of 82% on August 30.

Wind Direction

Wind Direction in DolisieWSWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsouth
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 Dolisie 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 Dolisie for general outdoor tourist activities is from mid June to early September, with a peak score in the third week of July.

Tourism Score

Tourism Score in Dolisiebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468108.08.02.82.83.03.0 precipitationprecipitationtemperaturetemperaturetourism 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 Dolisie for hot-weather activities is from late May to early October, with a peak score in the third week of June.

Beach/Pool Score

Beach/Pool Score in Dolisiebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.47.44.14.17.27.24.34.3 precipitationprecipitationtemperaturetemperaturebeach/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 Dolisie 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 in DolisieJanFebMarAprMayJunJulAugSepOctNovDec0%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 3comfortablewarmhotcool
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 in DolisieJanFebMarAprMayJunJulAugSepOctNovDec0°F1,000°F2,000°F3,000°F4,000°F5,000°F6,000°F7,000°F8,000°F9,000°FJul 590°FJul 590°FAug 12900°FAug 12900°FJun 309,634°FJun 309,634°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 1.8 months, from August 11 to October 6, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is September 5, with an average of 5.6 kWh.

The darker period of the year lasts for 1.2 months, from April 11 to May 17, with an average daily incident shortwave energy per square meter below 4.5 kWh. The darkest day of the year is April 25, with an average of 4.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in DolisiebrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWhSep 55.6 kWhSep 55.6 kWhApr 254.2 kWhApr 254.2 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.

Topography

For the purposes of this report, the geographical coordinates of Dolisie are -4.198 deg latitude, 12.667 deg longitude, and 1,089 ft elevation.

The topography within 2 miles of Dolisie contains only modest variations in elevation, with a maximum elevation change of 371 feet and an average elevation above sea level of 1,112 feet. Within 10 miles contains only modest variations in elevation (1,873 feet). Within 50 miles contains very significant variations in elevation (2,890 feet).

The area within 2 miles of Dolisie is covered by grassland (45%), shrubs (33%), and trees (19%), within 10 miles by shrubs (58%) and trees (27%), and within 50 miles by shrubs (48%) and trees (42%).

Data Sources

This report illustrates the typical weather in Dolisie, 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 Dolisie.

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

The stations contributing to this reconstruction are: Dolisie Airport (99%, 3.7 kilometers, east) and Pointe Noire Airport (0.6%, 111 kilometers, southwest).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.