Average Weather in Eldama Ravine Kenya

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The climate in Eldama Ravine is comfortable and overcast. Over the course of the year, the temperature typically varies from 51°F to 78°F and is rarely below 47°F or above 82°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 Eldama Ravine, 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 Eldama Ravine begins around June 28 and lasts for 3.4 months, ending around October 9. On September 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 40% of the time, and overcast or mostly cloudy 60% of the time.

The cloudier part of the year begins around October 9 and lasts for 8.6 months, ending around June 28. On April 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 86% of the time, and clear, mostly clear, or partly cloudy 14% 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 Eldama Ravine varies very significantly throughout the year.

The wetter season lasts 7.9 months, from March 28 to November 24, with a greater than 41% chance of a given day being a wet day. The chance of a wet day peaks at 68% on April 30.

The drier season lasts 4.1 months, from November 24 to March 28. The smallest chance of a wet day is 13% on January 21.

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 68% on April 30.

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. Eldama Ravine experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Eldama Ravine. The most rain falls during the 31 days centered around April 25, with an average total accumulation of 8.7 inches.

The least rain falls around January 27, with an average total accumulation of 1.3 inches.

The length of the day in Eldama Ravine does not vary substantially over the course of the year, staying within 7 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 12 hours, 7 minutes of daylight; the longest day is June 21, with 12 hours, 8 minutes of daylight.

The earliest sunrise is at 6:17 AM on November 4, and the latest sunrise is 31 minutes later at 6:47 AM on February 11. The earliest sunset is at 6:24 PM on November 2, and the latest sunset is 31 minutes later at 6:54 PM on February 9.

Daylight saving time (DST) is not observed in Eldama Ravine 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.

The perceived humidity level in Eldama Ravine, 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, remaining a virtually constant 0% throughout.

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 Eldama Ravine experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.2 months, from November 6 to April 11, with average wind speeds of more than 3.1 miles per hour. The windiest day of the year is March 5, with an average hourly wind speed of 4.0 miles per hour.

The calmer time of year lasts for 6.8 months, from April 11 to November 6. The calmest day of the year is June 17, with an average hourly wind speed of 2.2 miles per hour.

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

The wind is most often from the south for 4.2 months, from May 22 to September 28, with a peak percentage of 48% on July 28. The wind is most often from the east for 7.8 months, from September 28 to May 22, with a peak percentage of 68% 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 2.1 months, from January 20 to March 24, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is March 4, with an average of 7.6 kWh.

The darker period of the year lasts for 2.7 months, from May 29 to August 21, with an average daily incident shortwave energy per square meter below 5.8 kWh. The darkest day of the year is July 24, with an average of 5.3 kWh.

For the purposes of this report, the geographical coordinates of Eldama Ravine are 0.052 deg latitude, 35.731 deg longitude, and 6,877 ft elevation.

The topography within 2 miles of Eldama Ravine contains very significant variations in elevation, with a maximum elevation change of 951 feet and an average elevation above sea level of 6,848 feet. Within 10 miles contains very significant variations in elevation (4,137 feet). Within 50 miles also contains extreme variations in elevation (6,949 feet).

The area within 2 miles of Eldama Ravine is covered by cropland (49%), trees (21%), and grassland (19%), within 10 miles by trees (48%) and cropland (35%), and within 50 miles by cropland (38%) and trees (28%).

This report illustrates the typical weather in Eldama Ravine, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Eldama Ravine.

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

The stations contributing to this reconstruction are: Nakuru Airport (41%, 54 kilometers, southeast); Kericho Airport (35%, 63 kilometers, southwest); Kakamega Airport (13%, 108 kilometers, west); and Kitale Airport (11%, 134 kilometers, northwest).

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.