Spring Weather in Saint Vincent and the Grenadines St. Vincent & Grenadines

Daily high temperatures are around 85°F, rarely falling below 82°F or exceeding 88°F. The highest daily average high temperature is 86°F on May 24.

Daily low temperatures are around 78°F, rarely falling below 75°F or exceeding 81°F.

For reference, on September 11, the hottest day of the year, temperatures in Saint Vincent and the Grenadines typically range from 80°F to 87°F, while on February 8, the coldest day of the year, they range from 77°F to 83°F.

The figure below shows you a compact characterization of the hourly average spring 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.

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The spring in Saint Vincent and the Grenadines experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 52% to 65%. The highest chance of overcast or mostly cloudy conditions is 67% on May 21.

The clearest day of the spring is March 1, with clear, mostly clear, or partly cloudy conditions 48% of the time.

For reference, on September 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on January 14, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 54%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Saint Vincent and the Grenadines, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 5% and ending it at 23%.

For reference, the year's highest daily chance of a wet day is 39% on September 22, and its lowest chance is 4% on February 28.

Rainfall

To 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 spring in Saint Vincent and the Grenadines is rapidly increasing, starting the season at 0.3 inches, when it rarely exceeds 0.5 inches, and ending the season at 1.5 inches, when it rarely exceeds 3.1 inches or falls below 0.2 inches.

Over the course of the spring in Saint Vincent and the Grenadines, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 57 minutes, implying an average daily increase of 38 seconds, and weekly increase of 4 minutes, 25 seconds.

The shortest day of the spring is March 1, with 11 hours, 53 minutes of daylight and the longest day is May 31, with 12 hours, 51 minutes of daylight.

The latest sunrise of the spring in Saint Vincent and the Grenadines is 6:20 AM on March 1 and the earliest sunrise is 43 minutes earlier at 5:37 AM on May 30.

The earliest sunset is 6:13 PM on March 1 and the latest sunset is 14 minutes later at 6:27 PM on May 31.

Daylight saving time is not observed in Saint Vincent and the Grenadines during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:39 AM and sets 12 hours, 54 minutes later, at 6:33 PM, while on December 21, the shortest day of the year, it rises at 6:22 AM and sets 11 hours, 21 minutes later, at 5:43 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.

The figure below presents a compact representation of key lunar data for the spring 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.

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 chance that a given day will be muggy in Saint Vincent and the Grenadines is essentially constant during the spring, remaining within 1% of 99% throughout.

For reference, on April 30, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 27, the least muggy day of the year, there are muggy conditions 99% of the time.

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 Saint Vincent and the Grenadines is essentially constant during the spring, remaining within 0.6 miles per hour of 16.3 miles per hour throughout.

For reference, on February 8, the windiest day of the year, the daily average wind speed is 17.5 miles per hour, while on September 13, the calmest day of the year, the daily average wind speed is 12.7 miles per hour.

The lowest daily average wind speed during the spring is 15.7 miles per hour on April 26.

The hourly average wind direction in Saint Vincent and the Grenadines throughout the spring is predominantly from the east, with a peak proportion of 99% on May 4.

Saint Vincent and the Grenadines 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 Saint Vincent and the Grenadines is gradually increasing during the spring, rising by 2°F, from 80°F to 82°F, over the course of the 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).

Temperatures in Saint Vincent and the Grenadines 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 Saint Vincent and the Grenadines are very rapidly increasing during the spring, increasing by 2,817°F, from 1,762°F to 4,579°F, over the course of the season.

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 in Saint Vincent and the Grenadines is gradually decreasing during the spring, falling by 0.7 kWh, from 6.7 kWh to 6.1 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the spring is 7.1 kWh on April 1.

For the purposes of this report, the geographical coordinates of Saint Vincent and the Grenadines are 13.083 deg latitude, -61.200 deg longitude, and 0 ft elevation.

The topography within 2 miles of Saint Vincent and the Grenadines 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 Saint Vincent and the Grenadines is covered by water (100%), within 10 miles by water (87%), and within 50 miles by water (98%).