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Average Weather in December in Guidan Roumdji Niger

Daily high temperatures decrease by 6°F, from 91°F to 85°F, rarely falling below 78°F or exceeding 97°F.

Daily low temperatures decrease by 4°F, from 63°F to 59°F, rarely falling below 54°F or exceeding 68°F.

For reference, on April 22, the hottest day of the year, temperatures in Guidan Roumdji typically range from 80°F to 104°F, while on January 2, the coldest day of the year, they range from 59°F to 85°F.

Average High and Low Temperature in December

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 temperatures for the quarter of the year centered on December. 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 December

Average Hourly Temperature in December in Guidan Roumdji18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMNovJancoolcomfortablecomfortablewarmhothotwarmsweltering
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Gadhada, India (4,282 miles away) is the far-away foreign place with temperatures most similar to Guidan Roumdji (view comparison).

Clouds

The month of December in Guidan Roumdji experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 43% to 32%.

The clearest day of the month is December 30, with clear, mostly clear, or partly cloudy conditions 68% of the time.

For reference, on May 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 63%, while on January 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.

Cloud Cover Categories in December

Cloud Cover Categories in December in Guidan Roumdji1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 157%Dec 157%Dec 3168%Dec 3168%Dec 1159%Dec 1159%Dec 2165%Dec 2165%clearmostly clearpartly cloudymostly cloudyovercast
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

Sun

Over the course of December in Guidan Roumdji, the length of the day is essentially constant. The shortest day of the month is December 21, with 11 hours, 19 minutes of daylight and the longest day is December 1, with 11 hours, 23 minutes of daylight.

Hours of Daylight and Twilight in December

Hours of Daylight and Twilight in December in Guidan Roumdji1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 2111 hr, 19 minDec 2111 hr, 19 minnightnightdaydayDec 111 hr, 23 minDec 111 hr, 23 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 earliest sunrise of the month in Guidan Roumdji is 6:40 AM on December 1 and the latest sunrise is 15 minutes later at 6:56 AM on December 31.

The earliest sunset is 6:03 PM on December 1 and the latest sunset is 13 minutes later at 6:16 PM on December 31.

Daylight saving time is not observed in Guidan Roumdji during 2018.

For reference, on June 21, the longest day of the year, the Sun rises at 6:06 AM and sets 12 hours, 56 minutes later, at 7:03 PM, while on December 21, the shortest day of the year, it rises at 6:51 AM and sets 11 hours, 19 minutes later, at 6:10 PM.

Sunrise & Sunset with Twilight in December

The solar day over the course of December. 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 chance that a given day will be muggy in Guidan Roumdji is essentially constant during December, remaining around 0% throughout.

For reference, on August 8, the muggiest day of the year, there are muggy conditions 100% of the time, while on November 30, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in December

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 in Guidan Roumdji is increasing during December, increasing from 10.4 miles per hour to 11.8 miles per hour over the course of the month.

For reference, on January 3, the windiest day of the year, the daily average wind speed is 11.8 miles per hour, while on September 24, the calmest day of the year, the daily average wind speed is 5.7 miles per hour.

Average Wind Speed in December

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction in Guidan Roumdji throughout December is predominantly from the east, with a peak proportion of 93% on December 13.

Wind Direction in December

Wind Direction in December in Guidan Roumdji1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJaneastnorth
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).

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 Guidan Roumdji 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 December

Time Spent in Various Temperature Bands and the Growing Season in December in Guidan Roumdji1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJan100%Dec 16100%Dec 16coolcomfortablewarmhotswelteringcold
The percentage of time spent in various temperature bands: 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 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 Guidan Roumdji are rapidly increasing during December, increasing by 691°F, from 10,267°F to 10,958°F, over the course of the month.

Growing Degree Days in December

The average growing degree days accumulated over the course of December, 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 in Guidan Roumdji is essentially constant during December, remaining within 0.1 kWh of 5.5 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 5.5 kWh on December 16.

Average Daily Incident Shortwave Solar Energy in December

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 Guidan Roumdji are 13.658 deg latitude, 6.696 deg longitude, and 1,076 ft elevation.

The topography within 2 miles of Guidan Roumdji contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 1,079 feet. Within 10 miles also contains only modest variations in elevation (230 feet). Within 50 miles contains only modest variations in elevation (932 feet).

The area within 2 miles of Guidan Roumdji is covered by grassland (52%) and cropland (45%), within 10 miles by grassland (52%) and cropland (46%), and within 50 miles by cropland (47%) and grassland (47%).

Data Sources

This report illustrates the typical weather in Guidan Roumdji year round, 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 Guidan Roumdji.

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

The stations contributing to this reconstruction are: Maradi Airport (85%, 50 kilometers, east) and Birni-N'Konni (15%, 157 kilometers, west).

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.