Average Weather in Shelui Tanzania

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In Shelui, the wet season is overcast, the dry season is windy and partly cloudy, and it is hot year round. Over the course of the year, the temperature typically varies from 59°F to 94°F and is rarely below 56°F or above 97°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 Shelui, 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 Shelui begins around May 12 and lasts for 4.7 months, ending around October 3. On August 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 70% of the time, and overcast or mostly cloudy 30% of the time.

The cloudier part of the year begins around October 3 and lasts for 7.3 months, ending around May 12. On January 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 80% of the time, and clear, mostly clear, or partly cloudy 20% 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 Shelui varies very significantly throughout the year.

The wetter season lasts 5.6 months, from November 13 to May 1, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 52% on January 1.

The drier season lasts 6.4 months, from May 1 to November 13. The smallest chance of a wet day is 0% on July 10.

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 52% on January 1.

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. Shelui experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.1 months, from October 18 to May 21, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 30, with an average total accumulation of 4.4 inches.

The rainless period of the year lasts for 4.9 months, from May 21 to October 18. The least rain falls around July 10, with an average total accumulation of 0.0 inches.

The length of the day in Shelui does not vary substantially over the course of the year, staying within 22 minutes of 12 hours throughout. In 2017, the shortest day is June 21, with 11 hours, 52 minutes of daylight; the longest day is December 21, with 12 hours, 23 minutes of daylight.

The earliest sunrise is at 6:18 AM on November 10, and the latest sunrise is 34 minutes later at 6:52 AM on July 20. The earliest sunset is at 6:34 PM on October 25, and the latest sunset is 31 minutes later at 7:05 PM on February 3.

Daylight saving time (DST) is not observed in Shelui 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.

Shelui experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.4 months, from November 22 to May 3, during which time the comfort level is muggy, oppressive, or miserable at least 5% of the time. The muggiest day of the year is March 28, with muggy conditions 19% of the time.

The least muggy day of the year is August 5, when muggy conditions are essentially unheard of.

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 Shelui experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.9 months, from April 20 to November 18, with average wind speeds of more than 5.0 miles per hour. The windiest day of the year is August 31, with an average hourly wind speed of 7.1 miles per hour.

The calmer time of year lasts for 5.1 months, from November 18 to April 20. The calmest day of the year is January 17, with an average hourly wind speed of 3.1 miles per hour.

The predominant average hourly wind direction in Shelui is from the east throughout the year.

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 2.3 months, from August 24 to November 4, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is September 30, with an average of 7.5 kWh.

The darker period of the year lasts for 1.6 months, from December 11 to February 1, with an average daily incident shortwave energy per square meter below 6.1 kWh. The darkest day of the year is January 3, with an average of 5.8 kWh.

For the purposes of this report, the geographical coordinates of Shelui are -4.367 deg latitude, 34.200 deg longitude, and 3,583 ft elevation.

The topography within 2 miles of Shelui contains only modest variations in elevation, with a maximum elevation change of 125 feet and an average elevation above sea level of 3,585 feet. Within 10 miles contains only modest variations in elevation (1,654 feet). Within 50 miles contains very significant variations in elevation (2,510 feet).

The area within 2 miles of Shelui is covered by cropland (77%) and herbaceous vegetation (23%), within 10 miles by cropland (46%) and herbaceous vegetation (31%), and within 50 miles by cropland (34%) and herbaceous vegetation (25%).

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

Shelui 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 Shelui, 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.