Average Weather in Umkomaas South Africa
In Umkomaas, the summers are short, warm, muggy, and wet; the winters are long, cool, and windy; and it is mostly clear year round. Over the course of the year, the temperature typically varies from 53°F to 82°F and is rarely below 49°F or above 87°F.
Based on the tourism score, the best time of year to visit Umkomaas for warm-weather activities is from early April to late September.
The warm season lasts for 2.9 months, from December 31 to March 27, with an average daily high temperature above 80°F. The hottest day of the year is February 15, with an average high of 82°F and low of 71°F.
The cool season lasts for 4.4 months, from June 4 to October 17, with an average daily high temperature below 74°F. The coldest day of the year is July 4, with an average low of 53°F and high of 72°F.
Average High and Low Temperature
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
In Umkomaas, 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 Umkomaas begins around January 16 and lasts for 7.9 months, ending around September 12. On July 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 84% of the time, and overcast or mostly cloudy 16% of the time.
The cloudier part of the year begins around September 12 and lasts for 4.1 months, ending around January 16. On October 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 42% of the time, and clear, mostly clear, or partly cloudy 58% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Umkomaas varies very significantly throughout the year.
The wetter season lasts 5.8 months, from October 2 to March 29, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 60% on December 13.
The drier season lasts 6.2 months, from March 29 to October 2. The smallest chance of a wet day is 7% on July 4.
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 60% on December 13.
Daily Chance of Precipitation
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. Umkomaas experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Umkomaas. The most rain falls during the 31 days centered around December 4, with an average total accumulation of 6.8 inches.
The least rain falls around June 7, with an average total accumulation of 0.8 inches.
Average Monthly Rainfall
The length of the day in Umkomaas varies significantly over the course of the year. In 2018, the shortest day is June 21, with 10 hours, 12 minutes of daylight; the longest day is December 22, with 14 hours, 6 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:47 AM on December 4, and the latest sunrise is 2 hours, 6 minutes later at 6:53 AM on July 2. The earliest sunset is at 5:03 PM on June 11, and the latest sunset is 1 hour, 60 minutes later at 7:02 PM on January 9.
Daylight saving time (DST) is not observed in Umkomaas during 2018.
Sunrise & Sunset with Twilight
Umkomaas experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 6.5 months, from October 17 to May 2, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The muggiest day of the year is February 14, with muggy conditions 84% of the time.
The least muggy day of the year is June 28, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Umkomaas experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 5.6 months, from August 14 to February 1, with average wind speeds of more than 11.0 miles per hour. The windiest day of the year is October 24, with an average hourly wind speed of 12.5 miles per hour.
The calmer time of year lasts for 6.4 months, from February 1 to August 14. The calmest day of the year is May 10, with an average hourly wind speed of 9.5 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Umkomaas varies throughout the year.
The wind is most often from the south for 1.9 months, from March 4 to May 2 and for 4.5 months, from July 28 to December 11, with a peak percentage of 42% on November 13. The wind is most often from the north for 2.8 months, from May 2 to July 28, with a peak percentage of 34% on May 15. The wind is most often from the east for 2.8 months, from December 11 to March 4, with a peak percentage of 39% on January 1.
Umkomaas 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 water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.2 months, from January 6 to April 13, with an average temperature above 77°F. The day of the year with the warmest water is February 18, with an average temperature of 79°F.
The time of year with cooler water lasts for 3.8 months, from July 1 to October 25, with an average temperature below 72°F. The day of the year with the coolest water is August 25, with an average temperature of 70°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Umkomaas 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 Umkomaas for general outdoor tourist activities is from early April to late September, with a peak score in the first week of May.
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 Umkomaas for hot-weather activities is from late December to mid April, with a peak score in the third week of March.
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.
Temperatures in Umkomaas 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
Growing Degree Days
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 3.6 months, from November 5 to February 21, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest day of the year is January 1, with an average of 7.3 kWh.
The darker period of the year lasts for 3.1 months, from May 5 to August 9, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest day of the year is June 23, with an average of 3.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Umkomaas are -30.207 deg latitude, 30.798 deg longitude, and 39 ft elevation.
The topography within 2 miles of Umkomaas contains only modest variations in elevation, with a maximum elevation change of 476 feet and an average elevation above sea level of 98 feet. Within 10 miles contains only modest variations in elevation (1,473 feet). Within 50 miles contains very significant variations in elevation (5,282 feet).
The area within 2 miles of Umkomaas is covered by water (52%), shrubs (19%), cropland (17%), and artificial surfaces (11%), within 10 miles by water (54%) and cropland (19%), and within 50 miles by water (53%) and cropland (18%).
This report illustrates the typical weather in Umkomaas, 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 Umkomaas.
For each station, the records are corrected for the elevation difference between that station and Umkomaas 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 Umkomaas is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Umkomaas and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .