Fall Weather in Martinique MartiniqueDaily high temperatures are around 86°F, rarely falling below 83°F or exceeding 90°F. The highest daily average high temperature is 88°F on September 15. Daily low temperatures are around 75°F, rarely falling below 71°F or exceeding 79°F. For reference, on September 15, the hottest day of the year, temperatures in Martinique typically range from 76°F to 88°F, while on February 14, the coldest day of the year, they range from 72°F to 83°F. The figure below shows you a compact characterization of the hourly average fall 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. CloudsThe fall in Martinique experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 63% to 51%. The highest chance of overcast or mostly cloudy conditions is 70% on September 27. The clearest day of the fall is November 30, with clear, mostly clear, or partly cloudy conditions 49% of the time. For reference, on September 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on January 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Martinique, the chance of a wet day over the course of the fall is decreasing, starting the season at 45% and ending it at 41%. For reference, the year's highest daily chance of a wet day is 48% on August 12, and its lowest chance is 19% on March 3. RainfallTo 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 fall in Martinique is rapidly decreasing, starting the season at 5.9 inches, when it rarely exceeds 8.7 inches or falls below 2.6 inches, and ending the season at 4.7 inches, when it rarely exceeds 8.4 inches or falls below 1.7 inches. The highest average 31-day accumulation is 6.6 inches on October 1. SunOver the course of the fall in Martinique, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 4 minutes, implying an average daily decrease of 43 seconds, and weekly decrease of 4 minutes, 58 seconds. The shortest day of the fall is November 30, with 11 hours, 20 minutes of daylight and the longest day is September 1, with 12 hours, 24 minutes of daylight. The earliest sunrise of the fall in Martinique is 5:51 AM on September 1 and the latest sunrise is 21 minutes later at 6:13 AM on November 30. The latest sunset is 6:15 PM on September 1 and the earliest sunset is 44 minutes earlier at 5:31 PM on November 20. Daylight saving time is not observed in Martinique during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 5:35 AM and sets 13 hours, 0 minutes later, at 6:35 PM, while on December 21, the shortest day of the year, it rises at 6:24 AM and sets 11 hours, 16 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 the fall 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. 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 Martinique is essentially constant during the fall, remaining around 100% throughout. For reference, on May 16, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 1, the least muggy day of the year, there are muggy conditions 94% 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 Martinique is increasing during the fall, increasing from 13.8 miles per hour to 15.6 miles per hour over the course of the season. For reference, on June 22, the windiest day of the year, the daily average wind speed is 17.8 miles per hour, while on October 1, the calmest day of the year, the daily average wind speed is 12.9 miles per hour. The lowest daily average wind speed during the fall is 12.9 miles per hour on October 1. The hourly average wind direction in Martinique throughout the fall is predominantly from the east, with a peak proportion of 94% on November 28. Water TemperatureMartinique 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 Martinique is essentially constant during the fall, remaining within 1°F of 83°F throughout. The highest average surface water temperature during the fall is 84°F on September 28. 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 Martinique 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 Martinique are very rapidly increasing during the fall, increasing by 2,707°F, from 7,186°F to 9,893°F, over the course of the season. 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 Martinique is gradually decreasing during the fall, falling by 0.5 kWh, from 5.6 kWh to 5.0 kWh, over the course of the season. The lowest average daily incident shortwave solar energy during the fall is 4.7 kWh on October 21. TopographyFor the purposes of this report, the geographical coordinates of Martinique are 14.667 deg latitude, -61.000 deg longitude, and 0 ft elevation. The topography within 2 miles of Martinique is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet). The area within 2 miles of Martinique is covered by cropland (50%) and trees (46%), within 10 miles by water (38%) and trees (30%), and within 50 miles by water (95%). Data SourcesThis report illustrates the typical weather in Martinique, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. The details of the data sources used for this report can be found on the Martinique Aimé Césaire International Airport page. 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. 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