Average Weather in Mendefera Eritrea

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In Mendefera, the wet season is overcast, the dry season is mostly clear, and it is warm year round. Over the course of the year, the temperature typically varies from 50°F to 86°F and is rarely below 46°F or above 91°F.

The hot season lasts for 3.5 months, from March 1 to June 17, with an average daily high temperature above 83°F. The hottest day of the year is May 24, with an average high of 86°F and low of 61°F.

The cool season lasts for 1.5 months, from July 13 to August 29, with an average daily high temperature below 77°F. The coldest day of the year is December 25, with an average low of 50°F and high of 78°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 Mendefera, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Mendefera begins around October 1 and lasts for 7.8 months, ending around May 26. On November 20, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 81% of the time, and overcast or mostly cloudy 19% of the time.

The cloudier part of the year begins around May 26 and lasts for 4.2 months, ending around October 1. On July 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 87% of the time, and clear, mostly clear, or partly cloudy 13% 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 Mendefera varies very significantly throughout the year.

The wetter season lasts 2.2 months, from June 27 to September 4, with a greater than 36% chance of a given day being a wet day. The chance of a wet day peaks at 70% on August 4.

The drier season lasts 9.8 months, from September 4 to June 27. The smallest chance of a wet day is 1% on February 5.

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 70% on August 4.

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. Mendefera experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.8 months, from March 18 to October 12, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 5, with an average total accumulation of 6.3 inches.

The rainless period of the year lasts for 5.2 months, from October 12 to March 18. The least rain falls around November 24, with an average total accumulation of 0.1 inches.

The length of the day in Mendefera varies over the course of the year. In 2017, the shortest day is December 21, with 11 hours, 15 minutes of daylight; the longest day is June 21, with 13 hours, 1 minute of daylight.

The earliest sunrise is at 5:54 AM on June 2, and the latest sunrise is 1 hour, 0 minutes later at 6:54 AM on January 22. The earliest sunset is at 5:52 PM on November 21, and the latest sunset is 1 hour, 7 minutes later at 6:58 PM on July 8.

Daylight saving time (DST) is not observed in Mendefera 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 Mendefera, 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 Mendefera experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 2.5 months, from May 28 to August 12, with average wind speeds of more than 3.9 miles per hour. The windiest day of the year is July 9, with an average hourly wind speed of 4.7 miles per hour.

The calmer time of year lasts for 9.5 months, from August 12 to May 28. The calmest day of the year is September 7, with an average hourly wind speed of 3.1 miles per hour.

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

The wind is most often from the west for 3.2 months, from June 3 to September 8, with a peak percentage of 89% on July 17. The wind is most often from the east for 8.8 months, from September 8 to June 3, with a peak percentage of 72% on January 1.

Mendefera is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.7 months, from July 8 to October 29, with an average temperature above 88°F. The day of the year with the warmest water is September 21, with an average temperature of 90°F.

The time of year with cooler water lasts for 3.2 months, from December 29 to April 4, with an average temperature below 82°F. The day of the year with the coolest water is February 16, with an average temperature of 79°F.

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 3.5 months, from February 19 to June 3, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest day of the year is April 14, with an average of 7.3 kWh.

The darker period of the year lasts for 1.6 months, from July 10 to August 28, with an average daily incident shortwave energy per square meter below 5.3 kWh. The darkest day of the year is August 5, with an average of 4.8 kWh.

For the purposes of this report, the geographical coordinates of Mendefera are 14.887 deg latitude, 38.815 deg longitude, and 6,496 ft elevation.

The topography within 2 miles of Mendefera contains only modest variations in elevation, with a maximum elevation change of 400 feet and an average elevation above sea level of 6,475 feet. Within 10 miles contains only modest variations in elevation (3,182 feet). Within 50 miles contains large variations in elevation (8,898 feet).

The area within 2 miles of Mendefera is covered by cropland (67%) and sparse vegetation (25%), within 10 miles by shrubs (41%) and cropland (38%), and within 50 miles by shrubs (36%) and cropland (31%).

This report illustrates the typical weather in Mendefera, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Mendefera is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Mendefera, according to the International Standard Atmosphere .

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.

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.