Average Weather in Ngozi Burundi

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In Ngozi, the wet season is overcast, the dry season is partly cloudy, and it is warm year round. Over the course of the year, the temperature typically varies from 57°F to 81°F and is rarely below 54°F or above 86°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 Ngozi, 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 Ngozi begins around May 27 and lasts for 3.7 months, ending around September 17. On July 28, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 64% of the time, and overcast or mostly cloudy 36% of the time.

The cloudier part of the year begins around September 17 and lasts for 8.3 months, ending around May 27. On April 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 82% of the time, and clear, mostly clear, or partly cloudy 18% 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 Ngozi varies very significantly throughout the year.

The wetter season lasts 7.2 months, from October 8 to May 14, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 64% on November 26.

The drier season lasts 4.8 months, from May 14 to October 8. The smallest chance of a wet day is 3% on July 4.

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 64% on November 26.

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. Ngozi experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from July 19 to June 18, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around April 4, with an average total accumulation of 5.3 inches.

The rainless period of the year lasts for 1.0 months, from June 18 to July 19. The least rain falls around July 6, with an average total accumulation of 0.4 inches.

The length of the day in Ngozi does not vary substantially over the course of the year, staying within 17 minutes of 12 hours throughout. In 2017, the shortest day is June 21, with 11 hours, 57 minutes of daylight; the longest day is December 21, with 12 hours, 18 minutes of daylight.

The earliest sunrise is at 5:37 AM on November 8, and the latest sunrise is 31 minutes later at 6:08 AM on February 18. The earliest sunset is at 5:50 PM on October 27, and the latest sunset is 31 minutes later at 6:21 PM on February 5.

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

Ngozi experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.2 months, from October 12 to May 18, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The muggiest day of the year is April 4, with muggy conditions 14% of the time.

The least muggy day of the year is August 4, 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 Ngozi experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from April 25 to October 28, with average wind speeds of more than 2.9 miles per hour. The windiest day of the year is August 11, with an average hourly wind speed of 3.7 miles per hour.

The calmer time of year lasts for 5.9 months, from October 28 to April 25. The calmest day of the year is January 19, with an average hourly wind speed of 2.0 miles per hour.

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

The wind is most often from the south for 3.0 months, from May 28 to August 28, with a peak percentage of 70% on July 18. The wind is most often from the east for 9.0 months, from August 28 to May 28, with a peak percentage of 48% 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 2.4 months, from July 12 to September 23, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is August 31, with an average of 6.6 kWh.

The darker period of the year lasts for 2.3 months, from October 31 to January 10, with an average daily incident shortwave energy per square meter below 5.5 kWh. The darkest day of the year is November 18, with an average of 5.2 kWh.

For the purposes of this report, the geographical coordinates of Ngozi are -2.908 deg latitude, 29.831 deg longitude, and 5,453 ft elevation.

The topography within 2 miles of Ngozi contains very significant variations in elevation, with a maximum elevation change of 955 feet and an average elevation above sea level of 5,546 feet. Within 10 miles contains very significant variations in elevation (2,195 feet). Within 50 miles contains large variations in elevation (7,034 feet).

The area within 2 miles of Ngozi is covered by cropland (70%) and grassland (21%), within 10 miles by cropland (84%), and within 50 miles by cropland (59%) and grassland (17%).

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

At a distance of 110 kilometers from Ngozi, 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 Ngozi 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.