February Weather in Hermanus South AfricaDaily high temperatures are around 77°F, rarely falling below 70°F or exceeding 85°F. Daily low temperatures are around 62°F, rarely falling below 57°F or exceeding 67°F. For reference, on January 26, the hottest day of the year, temperatures in Hermanus typically range from 63°F to 78°F, while on July 10, the coldest day of the year, they range from 47°F to 64°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. 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. São Bento do Sul, Brazil (4,059 miles away) is the far-away foreign place with temperatures most similar to Hermanus (view comparison). CloudsThe month of February in Hermanus experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 15% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 13% on February 10. The clearest day of the month is February 10, with clear, mostly clear, or partly cloudy conditions 87% of the time. For reference, on May 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 44%, while on February 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 87%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Hermanus, the chance of a wet day over the course of February is essentially constant, remaining around 8% throughout. For reference, the year's highest daily chance of a wet day is 24% on June 15, and its lowest chance is 7% on January 30. RainfallTo 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 February in Hermanus is essentially constant, remaining about 0.7 inches throughout, and rarely exceeding 1.9 inches. The lowest average 31-day accumulation is 0.7 inches on February 21. SunOver the course of February in Hermanus, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 56 minutes, implying an average daily decrease of 2 minutes, 0 seconds, and weekly decrease of 14 minutes, 0 seconds. The shortest day of the month is February 29, with 12 hours, 51 minutes of daylight and the longest day is February 1, with 13 hours, 47 minutes of daylight. The earliest sunrise of the month in Hermanus is 6:03 AM on February 1 and the latest sunrise is 27 minutes later at 6:29 AM on February 29. The latest sunset is 7:49 PM on February 1 and the earliest sunset is 29 minutes earlier at 7:20 PM on February 29. Daylight saving time is not observed in Hermanus during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 5:27 AM and sets 14 hours, 28 minutes later, at 7:55 PM, while on June 20, the shortest day of the year, it rises at 7:49 AM and sets 9 hours, 51 minutes later, at 5:40 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. MoonThe figure below presents a compact representation of key lunar data for February 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.
HumidityWe 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 Hermanus is essentially constant during February, remaining within 1% of 14% throughout. The highest chance of a muggy day during February is 15% on February 12. For reference, on February 12, the muggiest day of the year, there are muggy conditions 15% of the time, while on June 5, the least muggy day of the year, there are muggy conditions 0% of the time. WindThis 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 Hermanus is essentially constant during February, remaining within 0.2 miles per hour of 12.4 miles per hour throughout. For reference, on November 25, the windiest day of the year, the daily average wind speed is 13.0 miles per hour, while on April 26, the calmest day of the year, the daily average wind speed is 10.7 miles per hour. The highest daily average wind speed during February is 12.7 miles per hour on February 16. The wind direction in Hermanus during February is predominantly out of the south from February 1 to February 12 and the east from February 12 to February 29. Water TemperatureHermanus 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 Hermanus is essentially constant during February, remaining within 1°F of 67°F throughout. The highest average surface water temperature during February is 68°F on February 4. Growing SeasonDefinitions 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 Hermanus 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 Hermanus are rapidly increasing during February, increasing by 531°F, from 2,648°F to 3,179°F, over the course of the month. Solar EnergyThis 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 Hermanus is decreasing during February, falling by 1.2 kWh, from 8.0 kWh to 6.9 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Hermanus are -34.419 deg latitude, 19.234 deg longitude, and 89 ft elevation. The topography within 2 miles of Hermanus contains very significant variations in elevation, with a maximum elevation change of 945 feet and an average elevation above sea level of 166 feet. Within 10 miles contains very significant variations in elevation (3,789 feet). Within 50 miles also contains extreme variations in elevation (6,568 feet). The area within 2 miles of Hermanus is covered by water (36%), artificial surfaces (27%), and shrubs (26%), within 10 miles by water (58%) and shrubs (26%), and within 50 miles by water (53%) and cropland (24%). Data SourcesThis report illustrates the typical weather in Hermanus, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere is only a single weather station, Cape Town International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Hermanus. At a distance of 77 kilometers from Hermanus, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records. The station records are corrected for the elevation difference between the station and Hermanus according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe 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. 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