Average Weather in Shambu Ethiopia

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2. Ethiopia
3. Oromiya
4. Shambu

In Shambu, the wet season is mostly cloudy, the dry season is partly cloudy, and it is comfortable year round. Over the course of the year, the temperature typically varies from 48°F to 76°F and is rarely below 42°F or above 82°F.

The warm season lasts for 3.2 months, from February 11 to May 16, with an average daily high temperature above 73°F. The hottest day of the year is April 1, with an average high of 76°F and low of 54°F.

The cool season lasts for 2.6 months, from June 22 to September 11, with an average daily high temperature below 64°F. The coldest day of the year is December 18, with an average low of 48°F and high of 69°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 Shambu, 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 Shambu begins around September 8 and lasts for 5.9 months, ending around March 5. On November 10, 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 March 5 and lasts for 6.1 months, ending around September 8. On July 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 81% of the time, and clear, mostly clear, or partly cloudy 19% 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 Shambu varies very significantly throughout the year.

The wetter season lasts 4.9 months, from May 5 to October 2, with a greater than 49% chance of a given day being a wet day. The chance of a wet day peaks at 95% on July 28.

The drier season lasts 7.1 months, from October 2 to May 5. The smallest chance of a wet day is 3% on December 28.

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 95% on July 28.

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. Shambu experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.2 months, from February 13 to November 19, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 3, with an average total accumulation of 14.0 inches.

The rainless period of the year lasts for 2.8 months, from November 19 to February 13. The least rain falls around December 22, with an average total accumulation of 0.2 inches.

The length of the day in Shambu does not vary substantially over the course of the year, staying within 41 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 11 hours, 34 minutes of daylight; the longest day is June 21, with 12 hours, 41 minutes of daylight.

The earliest sunrise is at 6:09 AM on May 29, and the latest sunrise is 44 minutes later at 6:53 AM on January 28. The earliest sunset is at 6:06 PM on November 16, and the latest sunset is 50 minutes later at 6:56 PM on July 12.

Daylight saving time (DST) is not observed in Shambu 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 Shambu, 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 predominant average hourly wind direction in Shambu varies throughout the year.

The wind is most often from the west for 3.9 weeks, from January 28 to February 24 and for 4.3 months, from May 13 to September 23, with a peak percentage of 74% on August 1. The wind is most often from the east for 2.3 months, from February 24 to May 3 and for 4.2 months, from September 23 to January 28, with a peak percentage of 32% on April 18. The wind is most often from the north for 1.4 weeks, from May 3 to May 13, with a peak percentage of 30% on May 5.

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 3.2 months, from February 4 to May 11, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is March 19, with an average of 6.8 kWh.

The darker period of the year lasts for 1.9 months, from June 24 to August 21, with an average daily incident shortwave energy per square meter below 4.8 kWh. The darkest day of the year is July 23, with an average of 4.3 kWh.

For the purposes of this report, the geographical coordinates of Shambu are 9.567 deg latitude, 37.100 deg longitude, and 8,212 ft elevation.

The topography within 2 miles of Shambu contains very significant variations in elevation, with a maximum elevation change of 1,847 feet and an average elevation above sea level of 8,270 feet. Within 10 miles contains very significant variations in elevation (4,754 feet). Within 50 miles also contains extreme variations in elevation (7,910 feet).

The area within 2 miles of Shambu is covered by cropland (100%), within 10 miles by cropland (82%), and within 50 miles by cropland (51%) and grassland (37%).

This report illustrates the typical weather in Shambu, 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, Addis Ababa Bole International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Shambu.

At a distance of 198 kilometers from Shambu, 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 Shambu to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 49%, making the weight assigned to the weather station 51%.

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.