Spring Weather in Iringa Tanzania

Daily high temperatures increase by 4°F, from 75°F to 79°F, rarely falling below 71°F or exceeding 83°F. The highest daily average high temperature is 80°F on November 12.

Daily low temperatures increase by 5°F, from 55°F to 61°F, rarely falling below 53°F or exceeding 63°F.

For reference, on November 12, the hottest day of the year, temperatures in Iringa typically range from 60°F to 80°F, while on July 13, the coldest day of the year, they range from 54°F to 72°F.

The figure below shows you a compact characterization of the hourly average spring temperatures. 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.

San Cayetano, Mexico (8,921 miles away) is the far-away foreign place with temperatures most similar to Iringa (view comparison).

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The spring in Iringa experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 23% to 56%.

The clearest day of the spring is September 1, with clear, mostly clear, or partly cloudy conditions 77% of the time.

For reference, on February 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 84%, while on August 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Iringa, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 1% and ending it at 35%.

For reference, the year's highest daily chance of a wet day is 63% on March 29, and its lowest chance is 0% on July 21.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the spring in Iringa is very rapidly increasing, starting the season at 0.0 inches, when it rarely exceeds 0.1 inches or falls below -0.0 inches, and ending the season at 3.9 inches, when it rarely exceeds 7.9 inches or falls below 0.5 inches.

The lowest average 31-day accumulation is 0.0 inches on September 3.

Over the course of the spring in Iringa, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 35 minutes, implying an average daily increase of 23 seconds, and weekly increase of 2 minutes, 41 seconds.

The shortest day of the spring is September 1, with 11 hours, 58 minutes of daylight and the longest day is November 30, with 12 hours, 32 minutes of daylight.

The latest sunrise of the spring in Iringa is 6:38 AM on September 1 and the earliest sunrise is 30 minutes earlier at 6:07 AM on November 13.

The earliest sunset is 6:31 PM on October 17 and the latest sunset is 11 minutes later at 6:42 PM on November 30.

Daylight saving time is not observed in Iringa during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 6:18 AM and sets 12 hours, 35 minutes later, at 6:52 PM, while on June 20, the shortest day of the year, it rises at 6:48 AM and sets 11 hours, 40 minutes later, at 6:29 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the spring of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

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 Iringa is essentially constant during the spring, remaining around 0% throughout.

For reference, on February 24, the muggiest day of the year, there are muggy conditions 2% of the time, while on June 16, the least muggy day of the year, there are muggy conditions 0% 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 Iringa is rapidly decreasing during the spring, decreasing from 12.4 miles per hour to 9.6 miles per hour over the course of the season.

For reference, on September 26, the windiest day of the year, the daily average wind speed is 12.7 miles per hour, while on February 13, the calmest day of the year, the daily average wind speed is 5.6 miles per hour.

The highest daily average wind speed during the spring is 12.7 miles per hour on October 4.

The hourly average wind direction in Iringa throughout the spring is predominantly from the east, with a peak proportion of 100% on October 19.

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 Iringa 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.

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 Iringa are very rapidly increasing during the spring, increasing by 1,596°F, from 760°F to 2,356°F, over the course of the season.

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 Iringa is essentially constant during the spring, remaining within 0.3 kWh of 7.4 kWh throughout.

The highest average daily incident shortwave solar energy during the spring is 7.7 kWh on October 22.

For the purposes of this report, the geographical coordinates of Iringa are -7.767 deg latitude, 35.700 deg longitude, and 5,331 ft elevation.

The topography within 2 miles of Iringa contains very significant variations in elevation, with a maximum elevation change of 1,214 feet and an average elevation above sea level of 5,308 feet. Within 10 miles contains very significant variations in elevation (2,195 feet). Within 50 miles contains large variations in elevation (7,188 feet).

The area within 2 miles of Iringa is covered by artificial surfaces (41%), cropland (23%), trees (16%), and grassland (11%), within 10 miles by cropland (40%) and trees (33%), and within 50 miles by trees (39%) and shrubs (21%).