• Weather Spark
  • Map
  • °F
    1. WeatherSpark.com
    2. Gabon
    3. Franceville / Mvengue Airport

    Average Weather at Franceville / Mvengue Airport Gabon

    The climate at Franceville / Mvengue Airport is warm, oppressive, and overcast. Over the course of the year, the temperature typically varies from 69°F to 88°F and is rarely below 66°F or above 91°F.

    Average High and Low Temperature

    Average High and Low Temperature at Franceville / Mvengue Airport65°F70°F75°F80°F85°F90°F95°FJanFebMarAprMayJunJulAugSepOctNovDecJul 1881°FJul 1881°FMar 1688°FMar 1688°F69°F69°F72°F72°FFeb 286°FFeb 286°FMay 387°FMay 387°FJun 1482°FJun 1482°FAug 1582°FAug 1582°F72°F72°F72°F72°F70°F70°F70°F70°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 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 at Franceville / Mvengue Airport12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDeccomfortablewarmhot
    The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

    Clouds

    At Franceville / Mvengue Airport, 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 at Franceville / Mvengue Airport begins around May 30 and lasts for 3.5 months, ending around September 14. On July 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 48% of the time, and overcast or mostly cloudy 52% of the time.

    The cloudier part of the year begins around September 14 and lasts for 8.5 months, ending around May 30. On April 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 82% of the time, and clear, mostly clear, or partly cloudy 18% of the time.

    Cloud Cover

    Cloud Cover at Franceville / Mvengue Airportclearercloudiercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecApr 1682%Apr 1682%Jul 1052%Jul 1052%May 3067%May 3067%Sep 1467%Sep 1467%overcastmostly cloudypartly cloudymostly clearclear
    The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

    Precipitation

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

    The wetter season lasts 8.5 months, from September 14 to May 28, with a greater than 48% chance of a given day being a wet day. The chance of a wet day peaks at 90% on November 12.

    The drier season lasts 3.5 months, from May 28 to September 14. The smallest chance of a wet day is 5% on July 1.

    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 90% on November 12.

    Daily Chance of Precipitation

    Daily Chance of Precipitation at Franceville / Mvengue Airportwetwetdry0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecNov 1290%Nov 1290%Jul 15%Jul 15%Jan 161%Jan 161%Sep 1449%Sep 1449%May 2848%May 2848%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. Franceville / Mvengue Airport experiences extreme seasonal variation in monthly rainfall.

    The rainy period of the year lasts for 11 months, from August 10 to June 27, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around November 7, with an average total accumulation of 11.8 inches.

    The rainless period of the year lasts for 1.5 months, from June 27 to August 10. The least rain falls around July 10, with an average total accumulation of 0.3 inches.

    Average Monthly Rainfall

    Average Monthly Rainfall at Franceville / Mvengue Airportrainrain0 in5 in10 in15 in20 inJanFebMarAprMayJunJulAugSepOctNovDecNov 711.8 inNov 711.8 inJul 100.3 inJul 100.3 inApr 177.4 inApr 177.4 inJan 194.4 inJan 194.4 inAug 100.5 inAug 100.5 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 liquid-equivalent snowfall.

    Sun

    The length of the day at Franceville / Mvengue Airport does not vary substantially over the course of the year, staying within 13 minutes of 12 hours throughout. In 2017, the shortest day is June 21, with 12 hours, 2 minutes of daylight; the longest day is December 21, with 12 hours, 13 minutes of daylight.

    Hours of Daylight and Twilight

    Hours of Daylight and Twilight at Franceville / Mvengue Airport0 hr4 hr8 hr12 hr16 hr20 hr24 hrJanFebMarAprMayJunJulAugSepOctNovDec12 hr, 6 minSep 2212 hr, 6 minSep 2212 hr, 13 minDec 2112 hr, 13 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2012 hr, 2 minJun 2112 hr, 2 minJun 21daydaynight
    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 6, and the latest sunrise is 31 minutes later at 6:15 AM on February 14. The earliest sunset is at 5:54 PM on October 29, and the latest sunset is 31 minutes later at 6:25 PM on February 8.

    Daylight saving time (DST) is not observed at Franceville / Mvengue Airport during 2017.

    Sunrise & Sunset with Twilight

    Sunrise & Sunset with Twilight at Franceville / Mvengue Airport12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecNov 65:44 AMNov 65:44 AM6:25 PMFeb 86:25 PMFeb 8Oct 295:54 PMOct 295:54 PM6:15 AMFeb 146:15 AMFeb 14daynightnight
    The solar day over the course of the year 2017. 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.

    The perceived humidity level at Franceville / Mvengue Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 3% of 97% throughout.

    Humidity Comfort Levels

    Humidity Comfort Levels at Franceville / Mvengue Airport0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 195%Aug 195%100%May 5100%May 5miserablemiserableoppressiveoppressivemuggymuggy
    The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

    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 at Franceville / Mvengue Airport does not vary significantly over the course of the year, remaining within 0.1 miles per hour of 1.0 miles per hour throughout.

    Average Wind Speed

    Average Wind Speed at Franceville / Mvengue Airport0.0 mph0.2 mph0.4 mph0.6 mph0.8 mph1.0 mph1.2 mph1.4 mphJanFebMarAprMayJunJulAugSepOctNovDecAug 31.1 mphAug 31.1 mphOct 310.9 mphOct 310.9 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 at Franceville / Mvengue Airport varies throughout the year.

    The wind is most often from the west for 1.4 weeks, from January 1 to January 11 and for 4.3 months, from July 9 to November 19, with a peak percentage of 75% on August 20. The wind is most often from the south for 5.9 months, from January 11 to July 9 and for 1.4 months, from November 19 to January 1, with a peak percentage of 56% on March 11.

    Wind Direction

    Wind Direction at Franceville / Mvengue AirportSWS0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecwestsoutheastnorth
    The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

    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

    Average Daily Incident Shortwave Solar Energy at Franceville / Mvengue Airport0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWhJanFebMarAprMayJunJulAugSepOctNovDecFeb 265.1 kWhFeb 265.1 kWhMay 154.5 kWhMay 154.5 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 Franceville / Mvengue Airport are -1.656 deg latitude, 13.438 deg longitude, and 1,293 ft elevation.

    The topography within 2 miles of Franceville / Mvengue Airport contains significant variations in elevation, with a maximum elevation change of 610 feet and an average elevation above sea level of 1,320 feet. Within 10 miles contains significant variations in elevation (1,112 feet). Within 50 miles also contains very significant variations in elevation (1,867 feet).

    The area within 2 miles of Franceville / Mvengue Airport is covered by cropland (38%), shrubs (34%), grassland (14%), and trees (14%), within 10 miles by trees (38%) and cropland (28%), and within 50 miles by trees (74%) and grassland (13%).

    Data Sources

    This report illustrates the typical weather at Franceville / Mvengue Airport, 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

    Franceville / Mvengue Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

    There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

    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.