September Weather in Stutterheim South Africa

Daily high temperatures increase by 2°F, from 67°F to 69°F, rarely falling below 55°F or exceeding 81°F.

Daily low temperatures increase by 2°F, from 46°F to 48°F, rarely falling below 39°F or exceeding 54°F.

For reference, on January 30, the hottest day of the year, temperatures in Stutterheim typically range from 58°F to 76°F, while on July 10, the coldest day of the year, they range from 41°F to 63°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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.

Goleta, United States (10,565 miles away) is the far-away foreign place with temperatures most similar to Stutterheim (view comparison).

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The month of September in Stutterheim experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 39% to 46%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 61% of the time.

For reference, on October 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on February 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Stutterheim, the chance of a wet day over the course of September is very rapidly increasing, starting the month at 16% and ending it at 29%.

For reference, the year's highest daily chance of a wet day is 53% on February 19, and its lowest chance is 7% on June 30.

Rainfall

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 September in Stutterheim is rapidly increasing, starting the month at 2.1 inches, when it rarely exceeds 5.0 inches or falls below 0.1 inches, and ending the month at 3.8 inches, when it rarely exceeds 7.7 inches or falls below 0.9 inches.

Over the course of September in Stutterheim, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 57 minutes, implying an average daily increase of 1 minute, 58 seconds, and weekly increase of 13 minutes, 44 seconds.

The shortest day of the month is September 1, with 11 hours, 27 minutes of daylight and the longest day is September 30, with 12 hours, 23 minutes of daylight.

The latest sunrise of the month in Stutterheim is 6:27 AM on September 1 and the earliest sunrise is 38 minutes earlier at 5:48 AM on September 30.

The earliest sunset is 5:53 PM on September 1 and the latest sunset is 18 minutes later at 6:12 PM on September 30.

Daylight saving time is not observed in Stutterheim during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 4:59 AM and sets 14 hours, 18 minutes later, at 7:17 PM, while on June 20, the shortest day of the year, it rises at 7:11 AM and sets 10 hours, 0 minutes later, at 5:12 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 September 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 Stutterheim is essentially constant during September, remaining around 0% throughout.

For reference, on February 11, the muggiest day of the year, there are muggy conditions 16% of the time, while on May 26, 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 Stutterheim is essentially constant during September, remaining within 0.1 miles per hour of 9.5 miles per hour throughout.

For reference, on July 29, the windiest day of the year, the daily average wind speed is 9.8 miles per hour, while on March 20, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.

The hourly average wind direction in Stutterheim throughout September is predominantly from the west, with a peak proportion of 40% on September 1.

Stutterheim is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Stutterheim is essentially constant during September, remaining around 68°F throughout.

The lowest average surface water temperature during September is 67°F on September 11.

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 Stutterheim 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 Stutterheim are increasing during September, increasing by 207°F, from 300°F to 507°F, over the course of the month.

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 Stutterheim is gradually increasing during September, rising by 1.0 kWh, from 4.7 kWh to 5.6 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Stutterheim are -32.571 deg latitude, 27.424 deg longitude, and 2,785 ft elevation.

The topography within 2 miles of Stutterheim contains significant variations in elevation, with a maximum elevation change of 784 feet and an average elevation above sea level of 2,726 feet. Within 10 miles contains significant variations in elevation (3,556 feet). Within 50 miles also contains extreme variations in elevation (6,631 feet).

The area within 2 miles of Stutterheim is covered by grassland (71%) and artificial surfaces (16%), within 10 miles by grassland (72%) and cropland (20%), and within 50 miles by grassland (40%) and shrubs (25%).