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Average Weather in Waliso Ethiopia

In Waliso, 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 50°F to 81°F and is rarely below 44°F or above 86°F.

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

Climate Summary

warmcomfortablewarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow58%58%22%22%overcastclearprecipitation: 8.8 inprecipitation: 8.8 in0.2 in0.2 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.0tourism score: 7.03.73.7
Click on each chart for more information.

Temperature

The warm season lasts for 4.1 months, from January 29 to May 31, with an average daily high temperature above 78°F. The hottest day of the year is March 19, with an average high of 81°F and low of 57°F.

The cool season lasts for 2.0 months, from July 1 to September 2, with an average daily high temperature below 71°F. The coldest day of the year is December 24, with an average low of 50°F and high of 77°F.

Average High and Low Temperature

Average High and Low Temperature in WalisowarmcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 2477°FDec 2477°FMar 1981°FMar 1981°F50°F50°F57°F57°FJan 2978°FJan 2978°FMay 3178°FMay 3178°FJul 171°FJul 171°FSep 271°FSep 271°F53°F53°F58°F58°F57°F57°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 WalisoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcoldcoldcoolcoolcomfortablewarmwarm
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.

Santa Catarina Roatina, Mexico (8,894 miles away) and San Lucas Tolimán, Guatemala (8,611 miles) are the far-away foreign places with temperatures most similar to Waliso (view comparison).

Clouds

In Waliso, 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 Waliso begins around August 28 and lasts for 6.6 months, ending around March 14. On November 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 58% of the time, and overcast or mostly cloudy 42% of the time.

The cloudier part of the year begins around March 14 and lasts for 5.4 months, ending around August 28. On July 25, 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 WalisoclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Nov 1058%Nov 1058%Jul 2522%Jul 2522%Aug 2839%Aug 2839%Mar 1440%Mar 1440%NowNowclearmostly clearpartly cloudymostly cloudyovercast
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 Waliso varies very significantly throughout the year.

The wetter season lasts 4.0 months, from May 26 to September 28, with a greater than 46% chance of a given day being a wet day. The chance of a wet day peaks at 90% on August 7.

The drier season lasts 8.0 months, from September 28 to May 26. The smallest chance of a wet day is 2% on December 27.

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 90% on August 7.

Daily Chance of Precipitation

Daily Chance of Precipitation in WalisowetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 790%Aug 790%Dec 272%Dec 272%May 2646%May 2646%Sep 2846%Sep 2846%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. Waliso experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.1 months, from February 3 to November 6, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 4, with an average total accumulation of 8.8 inches.

The rainless period of the year lasts for 2.9 months, from November 6 to February 3. The least rain falls around December 17, with an average total accumulation of 0.2 inches.

Average Monthly Rainfall

Average Monthly Rainfall in WalisorainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inAug 48.8 inAug 48.8 inDec 170.2 inDec 170.2 inFeb 30.5 inFeb 30.5 inNov 60.5 inNov 60.5 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 Waliso does not vary substantially over the course of the year, staying within 37 minutes of 12 hours throughout. In 2021, the shortest day is December 21, with 11 hours, 38 minutes of daylight; the longest day is June 21, with 12 hours, 37 minutes of daylight.

Hours of Daylight and Twilight

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 6:08 AM on May 26, and the latest sunrise is 41 minutes later at 6:48 AM on January 29. The earliest sunset is at 6:04 PM on November 14, and the latest sunset is 47 minutes later at 6:51 PM on July 13.

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

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in WalisoJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMay 266:08 AMMay 266:08 AM6:51 PMJul 136:51 PMJul 13Nov 146:04 PMNov 146:04 PM6:48 AMJan 296:48 AMJan 29daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Waliso, 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 WalisoJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 130%Feb 130%Jun 100%Jun 100%comfortablecomfortabledrydry
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 Waliso experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from October 4 to May 6, with average wind speeds of more than 6.4 miles per hour. The windiest day of the year is November 29, with an average hourly wind speed of 8.5 miles per hour.

The calmer time of year lasts for 5.0 months, from May 6 to October 4. The calmest day of the year is June 18, with an average hourly wind speed of 4.2 miles per hour.

Average Wind Speed

Average Wind Speed in WalisowindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphNov 298.5 mphNov 298.5 mphJun 184.2 mphJun 184.2 mphOct 46.4 mphOct 46.4 mphMay 66.4 mphMay 66.4 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 Waliso varies throughout the year.

The wind is most often from the west for 3.0 months, from June 7 to September 7, with a peak percentage of 73% on July 22. The wind is most often from the east for 9.0 months, from September 7 to June 7, with a peak percentage of 94% on January 1.

Wind Direction

Wind Direction in WalisoEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastsouthnorth
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 Waliso 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 Waliso for general outdoor tourist activities is from late September to late March, with a peak score in the second week of November.

Tourism Score

Tourism Score in Walisobest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.07.03.73.76.06.0NowNowprecipitationprecipitationtemperaturetemperature 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 Waliso for hot-weather activities is from late January to mid April, with a peak score in the second week of March.

Beach/Pool Score

Beach/Pool Score in Walisobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.54.50.90.93.73.7NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Waliso 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 WalisoJanFebMarAprMayJunJulAugSepOctNovDec0%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 3NowNowcoldcoolcomfortablewarm
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 WalisoJanFebMarAprMayJunJulAugSepOctNovDec0°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 890°FJan 890°FApr 191,800°FApr 191,800°FDec 315,454°FDec 315,454°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 2.9 months, from January 13 to April 10, with an average daily incident shortwave energy per square meter above 6.6 kWh. The brightest day of the year is March 1, with an average of 7.1 kWh.

The darker period of the year lasts for 1.9 months, from June 22 to August 18, with an average daily incident shortwave energy per square meter below 5.1 kWh. The darkest day of the year is July 18, with an average of 4.6 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in WalisobrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMar 17.1 kWhMar 17.1 kWhJul 184.6 kWhJul 184.6 kWhJan 136.6 kWhJan 136.6 kWhApr 106.6 kWhApr 106.6 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 Waliso are 8.534 deg latitude, 37.965 deg longitude, and 6,647 ft elevation.

The topography within 2 miles of Waliso contains only modest variations in elevation, with a maximum elevation change of 377 feet and an average elevation above sea level of 6,643 feet. Within 10 miles contains only modest variations in elevation (3,540 feet). Within 50 miles also contains extreme variations in elevation (8,668 feet).

The area within 2 miles of Waliso is covered by cropland (100%), within 10 miles by cropland (99%), and within 50 miles by cropland (78%) and grassland (16%).

Data Sources

This report illustrates the typical weather in Waliso, 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 Waliso.

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

The stations contributing to this reconstruction are: Addis Ababa Bole International Airport (65%, 104 kilometers, northeast) and Jimma (35%, 159 kilometers, southwest).

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.