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Average Weather in Breyten South Africa

In Breyten, the wet season is comfortable and partly cloudy and the dry season is cool and mostly clear. Over the course of the year, the temperature typically varies from 31°F to 72°F and is rarely below 25°F or above 79°F.

Based on the tourism score, the best time of year to visit Breyten for warm-weather activities is from mid December to early April.

Climate Summary

comfortablecoolcomfortableJanFebMarAprMayJunJulAugSepOctNovDec86%86%56%56%clearovercastprecipitation: 4.9 inprecipitation: 4.9 in0.2 in0.2 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 6.6tourism score: 6.62.62.6
Click on each chart for more information.

Temperature

The warm season lasts for 4.9 months, from October 28 to March 24, with an average daily high temperature above 69°F. The hottest day of the year is January 18, with an average high of 72°F and low of 54°F.

The cold season lasts for 1.8 months, from June 2 to July 29, with an average daily high temperature below 61°F. The coldest day of the year is July 8, with an average low of 31°F and high of 59°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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.

Average Hourly Temperature

Average Hourly Temperature in BreytenJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMvery coldvery coldcoldcoldcoolcomfortablecomfortablecool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Tupiza, Bolivia (5,912 miles away) is the far-away foreign place with temperatures most similar to Breyten (view comparison).

Clouds

In Breyten, 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 Breyten begins around February 19 and lasts for 7.7 months, ending around October 9. On June 14, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 86% of the time, and overcast or mostly cloudy 14% of the time.

The cloudier part of the year begins around October 9 and lasts for 4.3 months, ending around February 19. On November 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 44% of the time, and clear, mostly clear, or partly cloudy 56% of the time.

Cloud Cover Categories

Cloud Cover Categories in BreytenclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 1486%Jun 1486%Nov 2856%Nov 2856%Feb 1971%Feb 1971%Oct 971%Oct 971%clearmostly clearovercastpartly cloudymostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Breyten varies very significantly throughout the year.

The wetter season lasts 5.6 months, from October 9 to March 29, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 57% on December 17.

The drier season lasts 6.4 months, from March 29 to October 9. The smallest chance of a wet day is 2% on July 6.

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 57% on December 17.

Daily Chance of Precipitation

Daily Chance of Precipitation in BreytenwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 1757%Dec 1757%Jul 62%Jul 62%Oct 929%Oct 929%Mar 2929%Mar 2929%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Breyten experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.7 months, from August 24 to May 14, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 10, with an average total accumulation of 4.9 inches.

The rainless period of the year lasts for 3.3 months, from May 14 to August 24. The least rain falls around June 28, with an average total accumulation of 0.2 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Breyten varies over the course of the year. In 2018, the shortest day is June 21, with 10 hours, 29 minutes of daylight; the longest day is December 22, with 13 hours, 48 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 4:59 AM on December 1, and the latest sunrise is 1 hour, 49 minutes later at 6:48 AM on July 2. The earliest sunset is at 5:15 PM on June 8, and the latest sunset is 1 hour, 42 minutes later at 6:57 PM on January 12.

Daylight saving time (DST) is not observed in Breyten during 2018.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in BreytenJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMDec 14:59 AMDec 14:59 AM6:57 PMJan 126:57 PMJan 12Jun 85:15 PMJun 85:15 PM6:48 AMJul 26:48 AMJul 2daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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 perceived humidity level in Breyten, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in BreytenJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 250%Jul 250%Jan 291%Jan 291%comfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

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 Breyten experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.3 months, from July 18 to November 26, with average wind speeds of more than 8.2 miles per hour. The windiest day of the year is September 25, with an average hourly wind speed of 9.7 miles per hour.

The calmer time of year lasts for 7.7 months, from November 26 to July 18. The calmest day of the year is March 31, with an average hourly wind speed of 6.6 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the west for 6.2 months, from April 9 to October 14 and for 1.5 months, from October 25 to December 11, with a peak percentage of 52% on June 14. The wind is most often from the north for 1.6 weeks, from October 14 to October 25, with a peak percentage of 32% on October 19. The wind is most often from the east for 3.9 months, from December 11 to April 9, with a peak percentage of 39% on January 1.

Wind Direction

Wind Direction in BreytenEWNWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westeastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is in Breyten throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Breyten for general outdoor tourist activities is from mid December to early April, with a peak score in the third week of February.

Tourism Score

Tourism Score in Breytenbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.66.62.62.65.95.95.45.4precipitationprecipitationcloudscloudstourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Breyten for hot-weather activities is from late December to late February, with a peak score in the first week of January.

Beach/Pool Score

Beach/Pool Score in Breytenbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468102.72.70.00.02.22.21.81.8 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

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 Breyten typically lasts for 8.5 months (257 days), from around September 4 to around May 19, rarely starting before August 12 or after September 30, and rarely ending before April 23 or after June 10.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Breytengrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Sep 450%Sep 450%May 1950%May 1990%Sep 3090%Sep 3090%Apr 2390%Apr 2310%Aug 1210%Aug 1210%Jun 1010%Jun 100%Jul 80%Jul 8Jan 27100%Jan 27100%very coldcoldcoolcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

Based on growing degree days alone, the first spring blooms in Breyten should appear around August 7, only rarely appearing before August 1 or after August 15.

Growing Degree Days

Growing Degree Days in BreytenJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°F2,500°F3,000°FAug 790°FAug 790°FNov 23900°FNov 23900°FJun 302,736°FJun 302,736°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 4.5 months, from October 20 to March 3, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest day of the year is January 1, with an average of 7.4 kWh.

The darker period of the year lasts for 2.7 months, from May 9 to July 31, with an average daily incident shortwave energy per square meter below 4.9 kWh. The darkest day of the year is June 20, with an average of 4.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in BreytenbrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWh10 kWhJan 17.4 kWhJan 17.4 kWhJun 204.2 kWhJun 204.2 kWhOct 206.8 kWhOct 206.8 kWhMay 94.9 kWhMay 94.9 kWhJul 314.9 kWhJul 314.9 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Breyten are -26.302 deg latitude, 29.987 deg longitude, and 5,741 ft elevation.

The topography within 2 miles of Breyten contains only modest variations in elevation, with a maximum elevation change of 420 feet and an average elevation above sea level of 5,781 feet. Within 10 miles contains only modest variations in elevation (722 feet). Within 50 miles contains significant variations in elevation (3,609 feet).

The area within 2 miles of Breyten is covered by grassland (90%), within 10 miles by grassland (85%) and cropland (13%), and within 50 miles by grassland (68%) and cropland (29%).

Data Sources

This report illustrates the typical weather in Breyten, 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 Breyten.

For each station, the records are corrected for the elevation difference between that station and Breyten 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 Breyten is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Breyten and a given station.

The stations contributing to this reconstruction are: Standerton (66%, 104 kilometers, southwest) and Nelspruit Airport (34%, 139 kilometers, northeast).

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.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.