Average Weather in June in Byumba Rwanda
Daily high temperatures are around 72°F, rarely falling below 68°F or exceeding 75°F.
Daily low temperatures are around 54°F, rarely falling below 50°F or exceeding 57°F.
For reference, on February 10, the hottest day of the year, temperatures in Byumba typically range from 55°F to 74°F, while on July 6, the coldest day of the year, they range from 54°F to 72°F.
Average High and Low Temperature in June
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on June. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in June
The month of June in Byumba experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 67% to 54%.
The clearest day of the month is June 30, with clear, mostly clear, or partly cloudy conditions 46% of the time.
For reference, on April 18, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 84%, while on August 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 54%.
Cloud Cover Categories in June
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Byumba, the chance of a wet day over the course of June is very rapidly decreasing, starting the month at 26% and ending it at 8%.
For reference, the year's highest daily chance of a wet day is 71% on April 26, and its lowest chance is 7% on July 5.
Probability of Precipitation in June
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during June in Byumba is rapidly decreasing, starting the month at 2.4 inches, when it rarely exceeds 4.9 inches or falls below 0.5 inches, and ending the month at 0.6 inches, when it rarely exceeds 1.6 inches.
Average Monthly Rainfall in June
Over the course of June in Byumba, the length of the day is essentially constant. The shortest day of the month is June 21, with 12 hours, 2 minutes of daylight and the longest day is June 1, with 12 hours, 2 minutes of daylight.
Hours of Daylight and Twilight in June
The earliest sunrise of the month in Byumba is 5:56 AM on June 1 and the latest sunrise is 6 minutes later at 6:02 AM on June 30.
The earliest sunset is 5:58 PM on June 1 and the latest sunset is 6 minutes later at 6:04 PM on June 30.
Daylight saving time is not observed in Byumba during 2019.
For reference, on December 22, the longest day of the year, the Sun rises at 5:51 AM and sets 12 hours, 13 minutes later, at 6:04 PM, while on June 21, the shortest day of the year, it rises at 6:00 AM and sets 12 hours, 2 minutes later, at 6:02 PM.
Sunrise & Sunset with Twilight in June
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 chance that a given day will be muggy in Byumba is essentially constant during June, remaining around 0% throughout.
For reference, on May 2, the muggiest day of the year, there are muggy conditions 1% of the time, while on July 27, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in June
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Byumba is essentially constant during June, remaining within 0.2 miles per hour of 5.1 miles per hour throughout.
For reference, on August 13, the windiest day of the year, the daily average wind speed is 5.4 miles per hour, while on December 7, the calmest day of the year, the daily average wind speed is 4.1 miles per hour.
Average Wind Speed in June
Wind Direction in June
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 Byumba 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 in June
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.
The average accumulated growing degree days in Byumba are increasing during June, increasing by 364°F, from 4,284°F to 4,648°F, over the course of the month.
Growing Degree Days in June
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 in Byumba is essentially constant during June, remaining within 0.2 kWh of 5.8 kWh throughout.
Average Daily Incident Shortwave Solar Energy in June
For the purposes of this report, the geographical coordinates of Byumba are -1.576 deg latitude, 30.067 deg longitude, and 6,611 ft elevation.
The topography within 2 miles of Byumba contains very significant variations in elevation, with a maximum elevation change of 1,493 feet and an average elevation above sea level of 6,755 feet. Within 10 miles contains very significant variations in elevation (3,291 feet). Within 50 miles also contains extreme variations in elevation (10,791 feet).
The area within 2 miles of Byumba is covered by cropland (75%), trees (14%), and artificial surfaces (10%), within 10 miles by cropland (79%) and trees (13%), and within 50 miles by cropland (58%) and grassland (15%).
This report illustrates the typical weather in Byumba year round, 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 Byumba.
For each station, the records are corrected for the elevation difference between that station and Byumba 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 Byumba is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Byumba and a given station.
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.