1. WeatherSpark.com
  2. Ethiopia
  3. Oromiya

Average Weather in Shashemenē Ethiopia

In Shashemenē, the wet season is comfortable and mostly cloudy and the dry season is warm and partly cloudy. Over the course of the year, the temperature typically varies from 54°F to 82°F and is rarely below 49°F or above 87°F.

Based on the tourism score, the best time of year to visit Shashemenē for warm-weather activities is from late October to early March.

Climate Summary

warmcomfortablewarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow48%48%22%22%overcastclearprecipitation: 6.8 inprecipitation: 6.8 in0.4 in0.4 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.0tourism score: 7.04.64.6
Click on each chart for more information.

Temperature

The warm season lasts for 2.4 months, from January 25 to April 6, with an average daily high temperature above 80°F. The hottest day of the year is March 6, with an average high of 82°F and low of 59°F.

The cool season lasts for 2.9 months, from June 16 to September 14, with an average daily high temperature below 72°F. The coldest day of the year is December 23, with an average low of 54°F and high of 77°F.

Average High and Low Temperature

Average High and Low Temperature in ShashemenēwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 2377°FDec 2377°FMar 682°FMar 682°F54°F54°F59°F59°FJan 2580°FJan 2580°FApr 680°FApr 680°FJun 1672°FJun 1672°FSep 1472°FSep 1472°F56°F56°F60°F60°F58°F58°F57°F57°FNowNow
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 in ShashemenēJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcoolcoolcomfortablewarmwarmcoldcoolcoldcomfortable
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.

Clouds

In Shashemenē, 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 Shashemenē begins around August 18 and lasts for 6.9 months, ending around March 14. On December 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 March 14 and lasts for 5.1 months, ending around August 18. On April 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.

Cloud Cover Categories

Cloud Cover Categories in ShashemenēclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Dec 1048%Dec 1048%Apr 1922%Apr 1922%Aug 1835%Aug 1835%Mar 1435%Mar 1435%NowNowclearpartly cloudymostly cloudyovercastmostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 6.8 months, from March 22 to October 15, with a greater than 39% chance of a given day being a wet day. The chance of a wet day peaks at 72% on August 14.

The drier season lasts 5.2 months, from October 15 to March 22. The smallest chance of a wet day is 5% on December 29.

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 72% on August 14.

Daily Chance of Precipitation

Daily Chance of Precipitation in ShashemenēwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 1472%Aug 1472%Dec 295%Dec 295%Mar 2239%Mar 2239%Oct 1539%Oct 1539%NowNowrain
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. Shashemenē experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from January 7 to December 12, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 18, with an average total accumulation of 6.8 inches.

The rainless period of the year lasts for 3.6 weeks, from December 12 to January 7. The least rain falls around December 27, with an average total accumulation of 0.4 inches.

Average Monthly Rainfall

Average Monthly Rainfall in ShashemenērainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inAug 186.8 inAug 186.8 inDec 270.4 inDec 270.4 inApr 256.5 inApr 256.5 inJun 104.2 inJun 104.2 inJan 70.5 inJan 70.5 inNowNow
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 in Shashemenē does not vary substantially over the course of the year, staying within 32 minutes of 12 hours throughout. In 2021, the shortest day is December 21, with 11 hours, 42 minutes of daylight; the longest day is June 21, with 12 hours, 33 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in ShashemenēJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2012 hr, 33 minJun 2112 hr, 33 minJun 2112 hr, 7 minSep 2212 hr, 7 minSep 2211 hr, 42 minDec 2111 hr, 42 minDec 21nightnightday
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 6:07 AM on May 25, and the latest sunrise is 37 minutes later at 6:44 AM on January 31. The earliest sunset is at 6:03 PM on November 13, and the latest sunset is 43 minutes later at 6:46 PM on July 14.

Daylight saving time (DST) is not observed in Shashemenē during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in ShashemenēJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMay 256:07 AMMay 256:07 AM6:46 PMJul 146:46 PMJul 14Nov 136:03 PMNov 136:03 PM6:44 AMJan 316:44 AMJan 31daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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.

Moon Rise, Set & Phases

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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 in Shashemenē, 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.

Humidity Comfort Levels

Humidity Comfort Levels in ShashemenēJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 290%Jan 290%May 260%May 260%NowNowcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Shashemenē experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 2.2 months, from June 22 to August 29, with average wind speeds of more than 5.1 miles per hour. The windiest day of the year is July 25, with an average hourly wind speed of 6.3 miles per hour.

The calmer time of year lasts for 9.8 months, from August 29 to June 22. The calmest day of the year is September 24, with an average hourly wind speed of 4.0 miles per hour.

Average Wind Speed

Average Wind Speed in ShashemenēwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphJul 256.3 mphJul 256.3 mphSep 244.0 mphSep 244.0 mphNowNow
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 in Shashemenē varies throughout the year.

The wind is most often from the south for 1.8 months, from May 19 to July 13 and for 2.0 months, from July 28 to September 29, with a peak percentage of 56% on August 28. The wind is most often from the west for 2.1 weeks, from July 13 to July 28, with a peak percentage of 51% on July 23. The wind is most often from the east for 7.7 months, from September 29 to May 19, with a peak percentage of 71% on January 1.

Wind Direction

Wind Direction in ShashemenēESWSEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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).

Best Time of Year to Visit

To characterize how pleasant the weather is in Shashemenē throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Shashemenē for general outdoor tourist activities is from late October to early March, with a peak score in the second week of December.

Tourism Score

Tourism Score in Shashemenēbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.07.04.64.65.85.85.05.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Shashemenē for hot-weather activities is from mid January to late March, with a peak score in the third week of February.

Beach/Pool Score

Beach/Pool Score in Shashemenēbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.74.71.21.2NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 Shashemenē 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

Time Spent in Various Temperature Bands and the Growing Season in ShashemenēJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3NowNowcoolcomfortablewarmcoldhot
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.

Growing Degree Days

Growing Degree Days in ShashemenēJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°FJan 690°FJan 690°FApr 81,800°FApr 81,800°FDec 315,846°FDec 315,846°FNowNow
The average growing degree days accumulated over the course of the year, 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 experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.0 months, from January 27 to March 27, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest day of the year is March 2, with an average of 7.2 kWh.

The darker period of the year lasts for 2.0 months, from June 18 to August 18, with an average daily incident shortwave energy per square meter below 5.6 kWh. The darkest day of the year is July 17, with an average of 5.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in ShashemenēbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMar 27.2 kWhMar 27.2 kWhJul 175.2 kWhJul 175.2 kWhNowNow
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 Shashemenē are 7.200 deg latitude, 38.600 deg longitude, and 6,312 ft elevation.

The topography within 2 miles of Shashemenē contains significant variations in elevation, with a maximum elevation change of 581 feet and an average elevation above sea level of 6,377 feet. Within 10 miles contains significant variations in elevation (2,943 feet). Within 50 miles contains large variations in elevation (9,675 feet).

The area within 2 miles of Shashemenē is covered by cropland (100%), within 10 miles by cropland (83%), and within 50 miles by cropland (65%) and grassland (18%).

Data Sources

This report illustrates the typical weather in Shashemenē, 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 Shashemenē.

At a distance of 199 kilometers from Shashemenē, 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 Shashemenē to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 50%, making the weight assigned to the weather station 50%.

Other Data

All 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 © 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.