Average Weather in Koundara Guinea

1. World
2. Guinea
3. Boke
4. Koundara Prefecture
5. Koundara

In Koundara, the wet season is hot, oppressive, and overcast and the dry season is sweltering and partly cloudy. Over the course of the year, the temperature typically varies from 67°F to 104°F and is rarely below 62°F or above 108°F.

The hot season lasts for 2.9 months, from February 19 to May 17, with an average daily high temperature above 100°F. The hottest day of the year is April 10, with an average high of 104°F and low of 80°F.

The cool season lasts for 3.0 months, from June 26 to September 25, with an average daily high temperature below 90°F. The coldest day of the year is December 26, with an average low of 67°F and high of 94°F.

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.

In Koundara, 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 Koundara begins around November 12 and lasts for 6.7 months, ending around June 3. On March 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 61% of the time, and overcast or mostly cloudy 39% of the time.

The cloudier part of the year begins around June 3 and lasts for 5.3 months, ending around November 12. On August 29, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.

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

The wetter season lasts 4.3 months, from June 4 to October 13, with a greater than 47% chance of a given day being a wet day. The chance of a wet day peaks at 92% on August 22.

The drier season lasts 7.7 months, from October 13 to June 4. The smallest chance of a wet day is 0% on February 25.

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 92% on August 22.

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. Koundara experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.3 months, from May 1 to November 11, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 20, with an average total accumulation of 13.5 inches.

The rainless period of the year lasts for 5.7 months, from November 11 to May 1. The least rain falls around December 23, with an average total accumulation of 0.0 inches.

The length of the day in Koundara does not vary substantially over the course of the year, staying within 51 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 11 hours, 24 minutes of daylight; the longest day is June 21, with 12 hours, 52 minutes of daylight.

The earliest sunrise is at 6:26 AM on May 31, and the latest sunrise is 53 minutes later at 7:19 AM on January 24. The earliest sunset is at 6:24 PM on November 19, and the latest sunset is 59 minutes later at 7:23 PM on July 9.

Daylight saving time (DST) is not observed in Koundara during 2017.

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.

Koundara experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.3 months, from April 17 to November 26, during which time the comfort level is muggy, oppressive, or miserable at least 27% of the time. The muggiest day of the year is August 30, with muggy conditions 100% of the time.

The least muggy day of the year is January 12, with muggy conditions 1% of the time.

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 Koundara experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 8.3 months, from December 8 to August 17, with average wind speeds of more than 3.4 miles per hour. The windiest day of the year is January 26, with an average hourly wind speed of 4.7 miles per hour.

The calmer time of year lasts for 3.7 months, from August 17 to December 8. The calmest day of the year is October 21, with an average hourly wind speed of 2.3 miles per hour.

The predominant average hourly wind direction in Koundara varies throughout the year.

The wind is most often from the north for 1.8 months, from February 11 to April 4, with a peak percentage of 47% on March 3. The wind is most often from the west for 6.8 months, from April 4 to October 29, with a peak percentage of 64% on July 9. The wind is most often from the east for 3.4 months, from October 29 to February 11, with a peak percentage of 63% on January 1.

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 2.3 months, from March 1 to May 11, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest day of the year is April 10, with an average of 7.0 kWh.

The darker period of the year lasts for 4.8 months, from June 23 to November 16, with an average daily incident shortwave energy per square meter below 5.1 kWh. The darkest day of the year is August 23, with an average of 4.6 kWh.

For the purposes of this report, the geographical coordinates of Koundara are 12.483 deg latitude, -13.300 deg longitude, and 233 ft elevation.

The topography within 2 miles of Koundara contains only modest variations in elevation, with a maximum elevation change of 138 feet and an average elevation above sea level of 235 feet. Within 10 miles contains only modest variations in elevation (1,526 feet). Within 50 miles contains very significant variations in elevation (2,510 feet).

The area within 2 miles of Koundara is covered by cropland (72%) and artificial surfaces (20%), within 10 miles by trees (50%) and cropland (34%), and within 50 miles by trees (56%) and shrubs (20%).

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

At a distance of 145 kilometers from Koundara, 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 Koundara 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 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.