Winter Weather in Worcester South Africa

Daily high temperatures are around 66°F, rarely falling below 54°F or exceeding 81°F. The lowest daily average high temperature is 64°F on July 12.

Daily low temperatures are around 42°F, rarely falling below 32°F or exceeding 51°F. The lowest daily average low temperature is 40°F on July 11.

For reference, on January 26, the hottest day of the year, temperatures in Worcester typically range from 60°F to 92°F, while on July 10, the coldest day of the year, they range from 40°F to 65°F.

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

Woodcrest, United States (9,985 miles away) and Settat, Morocco (4,935 miles) are the far-away foreign places with temperatures most similar to Worcester (view comparison).

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The winter in Worcester experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 41% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 38% on August 10.

The clearest day of the winter is August 10, with clear, mostly clear, or partly cloudy conditions 62% of the time.

For reference, on May 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on February 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 88%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Worcester, the chance of a wet day over the course of the winter is gradually decreasing, starting the season at 26% and ending it at 22%.

For reference, the year's highest daily chance of a wet day is 28% on June 15, and its lowest chance is 8% on January 17.

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 winter in Worcester is decreasing, starting the season at 2.9 inches, when it rarely exceeds 5.5 inches or falls below 0.9 inches, and ending the season at 2.2 inches, when it rarely exceeds 4.2 inches or falls below 0.7 inches.

The highest average 31-day accumulation is 3.1 inches on June 24.

Over the course of the winter in Worcester, the length of the day is rapidly increasing. From the start to the end of the season, the length of the day increases by 1 hour, 20 minutes, implying an average daily increase of 53 seconds, and weekly increase of 6 minutes, 8 seconds.

The shortest day of the winter is June 20, with 9 hours, 55 minutes of daylight and the longest day is August 31, with 11 hours, 23 minutes of daylight.

The latest sunrise of the winter in Worcester is 7:47 AM on June 29 and the earliest sunrise is 46 minutes earlier at 7:01 AM on August 31.

The earliest sunset is 5:40 PM on June 11 and the latest sunset is 44 minutes later at 6:24 PM on August 31.

Daylight saving time is not observed in Worcester during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:28 AM and sets 14 hours, 24 minutes later, at 7:52 PM, while on June 20, the shortest day of the year, it rises at 7:46 AM and sets 9 hours, 55 minutes later, at 5:41 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 winter 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 Worcester is essentially constant during the winter, remaining around 0% throughout.

For reference, on February 15, the muggiest day of the year, there are muggy conditions 1% of the time, while on April 25, 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 Worcester is essentially constant during the winter, remaining within 0.2 miles per hour of 8.2 miles per hour throughout.

For reference, on January 18, the windiest day of the year, the daily average wind speed is 9.5 miles per hour, while on April 26, the calmest day of the year, the daily average wind speed is 7.5 miles per hour.

The wind direction in Worcester during the winter is predominantly out of the north from June 1 to August 7 and the west from August 7 to August 31.

Worcester 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 Worcester is essentially constant during the winter, remaining within 1°F of 59°F throughout.

The lowest average surface water temperature during the winter is 58°F on August 5.

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).

The growing season in Worcester typically lasts for 9.9 months (299 days), from around August 20 to around June 15, rarely starting after September 26, or ending before May 19.

The smallest chance that a given day will be within the growing season in Worcester during the winter is 21% on July 13.

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 Worcester are very rapidly decreasing during the winter, decreasing by 4,439°F, from 4,748°F to 310°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 Worcester is rapidly increasing during the winter, rising by 1.6 kWh, from 2.8 kWh to 4.4 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 2.6 kWh on June 24.

For the purposes of this report, the geographical coordinates of Worcester are -33.647 deg latitude, 19.449 deg longitude, and 768 ft elevation.

The topography within 2 miles of Worcester contains significant variations in elevation, with a maximum elevation change of 525 feet and an average elevation above sea level of 784 feet. Within 10 miles contains significant variations in elevation (5,919 feet). Within 50 miles also contains extreme variations in elevation (7,415 feet).

The area within 2 miles of Worcester is covered by artificial surfaces (69%) and shrubs (13%), within 10 miles by shrubs (51%) and cropland (34%), and within 50 miles by shrubs (49%) and cropland (46%).