September Weather in Ngou CameroonDaily high temperatures increase by 2°F, from 69°F to 71°F, rarely falling below 65°F or exceeding 75°F. Daily low temperatures are around 58°F, rarely falling below 56°F or exceeding 60°F. For reference, on February 20, the hottest day of the year, temperatures in Ngou typically range from 58°F to 79°F, while on January 1, the coldest day of the year, they range from 55°F to 76°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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 September in Ngou
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.
CloudsThe month of September in Ngou experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 85% throughout the month. The clearest day of the month is September 24, with clear, mostly clear, or partly cloudy conditions 16% of the time. For reference, on April 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 89%, while on December 30, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 39%. 
Compare Ngou to:PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Ngou, the chance of a wet day over the course of September is gradually increasing, starting the month at 90% and ending it at 92%. For reference, the year's highest daily chance of a wet day is 92% on September 18, and its lowest chance is 4% on January 1. RainfallTo show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during September in Ngou is rapidly decreasing, starting the month at 13.2 inches, when it rarely exceeds 19.7 inches or falls below 7.5 inches, and ending the month at 12.2 inches, when it rarely exceeds 16.9 inches or falls below 6.4 inches. The highest average 31-day accumulation is 13.2 inches on September 2. Average Monthly Rainfall in September in Ngou
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.
SunOver the course of September in Ngou, the length of the day is essentially constant. The shortest day of the month is September 30, with 12 hours, 4 minutes of daylight and the longest day is September 1, with 12 hours, 13 minutes of daylight. Hours of Daylight and Twilight in September in Ngou
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 month in Ngou is 6:12 AM on September 1 and the earliest sunrise is 6 minutes earlier at 6:06 AM on September 30. The latest sunset is 6:24 PM on September 1 and the earliest sunset is 14 minutes earlier at 6:10 PM on September 30. Daylight saving time is not observed in Ngou during 2026. For reference, on June 21, the longest day of the year, the Sun rises at 6:07 AM and sets 12 hours, 25 minutes later, at 6:33 PM, while on December 21, the shortest day of the year, it rises at 6:21 AM and sets 11 hours, 49 minutes later, at 6:11 PM. Sunrise & Sunset with Twilight in September in Ngou
The solar day over the course of September. 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 September in Ngou
northeastsouthwest
Solar elevation and azimuth over the course of September 2026. 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).
MoonThe figure below presents a compact representation of key lunar data for September 2026. 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.
HumidityWe 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 Ngou is essentially constant during September, remaining within 1% of 71% throughout. The highest chance of a muggy day during September is 72% on September 25. For reference, on May 2, the muggiest day of the year, there are muggy conditions 85% of the time, while on January 2, the least muggy day of the year, there are muggy conditions 18% of the time. WindThis 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 Ngou is gradually decreasing during September, decreasing from 3.7 miles per hour to 2.9 miles per hour over the course of the month. For reference, on August 2, the windiest day of the year, the daily average wind speed is 4.3 miles per hour, while on May 10, the calmest day of the year, the daily average wind speed is 2.7 miles per hour. The hourly average wind direction in Ngou throughout September is predominantly from the west, with a peak proportion of 62% on September 1. Wind Direction in September in Ngou
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).
Growing SeasonDefinitions 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 Ngou 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 September in Ngou
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 Ngou are increasing during September, increasing by 396°F, from 3,762°F to 4,158°F, over the course of the month. Solar EnergyThis 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 Ngou is essentially constant during September, remaining within 0.1 kWh of 4.2 kWh throughout. The highest average daily incident shortwave solar energy during September is 4.3 kWh on September 22. TopographyFor the purposes of this report, the geographical coordinates of Ngou are 5.197 deg latitude, 10.386 deg longitude, and 4,728 ft elevation. The topography within 2 miles of Ngou contains significant variations in elevation, with a maximum elevation change of 564 feet and an average elevation above sea level of 4,741 feet. Within 10 miles contains significant variations in elevation (5,164 feet). Within 50 miles also contains extreme variations in elevation (8,757 feet). The area within 2 miles of Ngou is covered by cropland (39%), shrubs (33%), and trees (26%), within 10 miles by trees (33%) and shrubs (31%), and within 50 miles by trees (59%) and shrubs (16%). Data SourcesThis report illustrates the typical weather in Ngou, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere is only a single weather station, Douala Obs., in our network suitable to be used as a proxy for the historical temperature and dew point records of Ngou. At a distance of 152 kilometers from Ngou, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere . The weight assigned to the MERRA-2 value depends on the distance from Ngou to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 4%, making the weight assigned to the weather station 96%. Other DataAll 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. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
