Average Weather in Uvinza Tanzania

1. World
2. Tanzania
3. Kigoma
4. Uvinza District
5. Uvinza

In Uvinza, the wet season is warm, muggy, and overcast and the dry season is hot and partly cloudy. Over the course of the year, the temperature typically varies from 56°F to 88°F and is rarely below 52°F or above 92°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 Uvinza, 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 Uvinza begins around May 22 and lasts for 3.7 months, ending around September 14. On July 23, 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 September 14 and lasts for 8.3 months, ending around May 22. On November 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 83% of the time, and clear, mostly clear, or partly cloudy 17% 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 Uvinza varies very significantly throughout the year.

The wetter season lasts 5.9 months, from October 27 to April 25, with a greater than 37% chance of a given day being a wet day. The chance of a wet day peaks at 72% on December 6.

The drier season lasts 6.1 months, from April 25 to October 27. The smallest chance of a wet day is 1% on July 2.

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 December 6.

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. Uvinza experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.4 months, from September 13 to May 25, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 5, with an average total accumulation of 6.2 inches.

The rainless period of the year lasts for 3.6 months, from May 25 to September 13. The least rain falls around July 9, with an average total accumulation of 0.0 inches.

The length of the day in Uvinza does not vary substantially over the course of the year, staying within 25 minutes of 12 hours throughout. In 2017, the shortest day is June 21, with 11 hours, 50 minutes of daylight; the longest day is December 21, with 12 hours, 25 minutes of daylight.

The earliest sunrise is at 6:32 AM on November 11, and the latest sunrise is 36 minutes later at 7:08 AM on July 19. The earliest sunset is at 6:50 PM on October 22, and the latest sunset is 31 minutes later at 7:21 PM on February 2.

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

Uvinza experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.3 months, from October 16 to May 26, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The muggiest day of the year is January 23, with muggy conditions 82% of the time.

The least muggy day of the year is July 18, with muggy conditions 1% of the time.

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

The windier part of the year lasts for 5.8 months, from April 19 to October 13, with average wind speeds of more than 3.6 miles per hour. The windiest day of the year is August 11, with an average hourly wind speed of 4.8 miles per hour.

The calmer time of year lasts for 6.2 months, from October 13 to April 19. The calmest day of the year is December 31, with an average hourly wind speed of 2.4 miles per hour.

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

The wind is most often from the east for 9.6 months, from February 23 to December 10, with a peak percentage of 78% on April 24. The wind is most often from the west for 2.5 months, from December 10 to February 23, with a peak percentage of 49% on January 1.

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 2.2 months, from August 1 to October 6, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is September 5, with an average of 6.8 kWh.

The darker period of the year lasts for 2.4 months, from November 19 to February 2, with an average daily incident shortwave energy per square meter below 5.3 kWh. The darkest day of the year is December 24, with an average of 4.9 kWh.

For the purposes of this report, the geographical coordinates of Uvinza are -5.104 deg latitude, 30.391 deg longitude, and 3,474 ft elevation.

The topography within 2 miles of Uvinza contains significant variations in elevation, with a maximum elevation change of 512 feet and an average elevation above sea level of 3,401 feet. Within 10 miles contains significant variations in elevation (1,214 feet). Within 50 miles contains very significant variations in elevation (3,327 feet).

The area within 2 miles of Uvinza is covered by trees (60%), artificial surfaces (18%), herbaceous vegetation (11%), and cropland (11%), within 10 miles by trees (62%) and shrubs (22%), and within 50 miles by trees (48%) and shrubs (15%).

This report illustrates the typical weather in Uvinza, 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, Kigoma Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Uvinza.

At a distance of 88 kilometers from Uvinza, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Uvinza according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.