April Weather in São Filipe Cape VerdeDaily high temperatures are around 75°F, rarely falling below 72°F or exceeding 77°F. Daily low temperatures are around 72°F, rarely falling below 70°F or exceeding 74°F. For reference, on September 22, the hottest day of the year, temperatures in São Filipe typically range from 79°F to 82°F, while on February 23, the coldest day of the year, they range from 71°F to 74°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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. Marine Corps Base Hawaii - MCBH, United States (8,404 miles away); Playas, Ecuador (4,014 miles); and Baie aux Huîtres, Mauritius (6,437 miles) are the far-away foreign places with temperatures most similar to São Filipe (view comparison). CloudsThe month of April in São Filipe experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 39% to 32%. The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 68% of the time. For reference, on September 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 64%, while on June 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In São Filipe, the chance of a wet day over the course of April is essentially constant, remaining around 3% throughout. For reference, the year's highest daily chance of a wet day is 25% on September 6, and its lowest chance is 1% on June 15. 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 April in São Filipe is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 inches or falling below -0.0 inches. SunOver the course of April in São Filipe, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 23 minutes, implying an average daily increase of 47 seconds, and weekly increase of 5 minutes, 29 seconds. The shortest day of the month is April 1, with 12 hours, 17 minutes of daylight and the longest day is April 30, with 12 hours, 40 minutes of daylight. The latest sunrise of the month in São Filipe is 6:33 AM on April 1 and the earliest sunrise is 18 minutes earlier at 6:15 AM on April 30. The earliest sunset is 6:50 PM on April 1 and the latest sunset is 5 minutes later at 6:55 PM on April 30. Daylight saving time is not observed in São Filipe during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 6:09 AM and sets 13 hours, 1 minute later, at 7:10 PM, while on December 21, the shortest day of the year, it rises at 6:58 AM and sets 11 hours, 15 minutes later, at 6:13 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 April 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 São Filipe is very rapidly increasing during April, rising from 61% to 86% over the course of the month. For reference, on August 22, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 31, the least muggy day of the year, there are muggy conditions 33% 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 São Filipe is essentially constant during April, remaining within 0.1 miles per hour of 13.9 miles per hour throughout. For reference, on January 8, the windiest day of the year, the daily average wind speed is 15.0 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 8.0 miles per hour. The hourly average wind direction in São Filipe throughout April is predominantly from the north, with a peak proportion of 96% on April 13. Water TemperatureSão Filipe 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 São Filipe is essentially constant during April, remaining around 74°F throughout. 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 São Filipe 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 São Filipe are rapidly increasing during April, increasing by 666°F, from 2,032°F to 2,698°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 São Filipe is essentially constant during April, remaining within 0.1 kWh of 7.3 kWh throughout. TopographyFor the purposes of this report, the geographical coordinates of São Filipe are 14.896 deg latitude, -24.496 deg longitude, and 338 ft elevation. The topography within 2 miles of São Filipe contains very significant variations in elevation, with a maximum elevation change of 1,342 feet and an average elevation above sea level of 356 feet. Within 10 miles contains very significant variations in elevation (8,799 feet). Within 50 miles also contains extreme variations in elevation (9,147 feet). The area within 2 miles of São Filipe is covered by water (35%), trees (32%), grassland (22%), and bare soil (10%), within 10 miles by water (67%) and trees (15%), and within 50 miles by water (98%). Data SourcesThis report illustrates the typical weather in São Filipe, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. São Filipe is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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. The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of São Filipe, according to the International Standard Atmosphere . All 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. 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. 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. Please review our full terms contained on our Terms of Service page. |