July Weather at V. C. Bird International Airport Antigua & Barbuda

Daily high temperatures are around 87°F, rarely falling below 85°F or exceeding 89°F.

Daily low temperatures are around 79°F, rarely falling below 77°F or exceeding 81°F.

For reference, on August 24, the hottest day of the year, temperatures at V. C. Bird International Airport typically range from 79°F to 87°F, while on February 14, the coldest day of the year, they range from 74°F to 82°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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.

Tevaitoa, French Polynesia (6,544 miles away); Malindi, Kenya (7,078 miles); and Mamoudzou, Mayotte (7,592 miles) are the far-away foreign places with temperatures most similar to V. C. Bird International Airport (view comparison).

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The month of July at V. C. Bird International Airport experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 54% to 49%.

The clearest day of the month is July 22, with clear, mostly clear, or partly cloudy conditions 52% of the time.

For reference, on May 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 67%, while on January 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At V. C. Bird International Airport, the chance of a wet day over the course of July is gradually increasing, starting the month at 27% and ending it at 30%.

For reference, the year's highest daily chance of a wet day is 37% on September 24, and its lowest chance is 7% on January 29.

Rainfall

To 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 July at V. C. Bird International Airport is gradually increasing, starting the month at 2.2 inches, when it rarely exceeds 5.1 inches or falls below 0.2 inches, and ending the month at 2.7 inches, when it rarely exceeds 5.9 inches or falls below 0.4 inches.

Over the course of July at V. C. Bird International Airport, the length of the day is essentially constant. The shortest day of the month is July 31, with 12 hours, 53 minutes of daylight and the longest day is July 1, with 13 hours, 8 minutes of daylight.

The earliest sunrise of the month at V. C. Bird International Airport is 5:37 AM on July 1 and the latest sunrise is 10 minutes later at 5:46 AM on July 31.

The latest sunset is 6:45 PM on July 6 and the earliest sunset is 5 minutes earlier at 6:40 PM on July 31.

Daylight saving time is not observed at V. C. Bird International Airport during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:34 AM and sets 13 hours, 9 minutes later, at 6:43 PM, while on December 21, the shortest day of the year, it rises at 6:32 AM and sets 11 hours, 6 minutes later, at 5:38 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 July 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 at V. C. Bird International Airport is essentially constant during July, remaining around 100% throughout.

For reference, on May 20, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 6, the least muggy day of the year, there are muggy conditions 90% 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 at V. C. Bird International Airport is gradually decreasing during July, decreasing from 16.9 miles per hour to 16.3 miles per hour over the course of the month.

For reference, on July 10, the windiest day of the year, the daily average wind speed is 17.0 miles per hour, while on October 8, the calmest day of the year, the daily average wind speed is 12.5 miles per hour.

The highest daily average wind speed during July is 17.0 miles per hour on July 11.

The hourly average wind direction at V. C. Bird International Airport throughout July is predominantly from the east, with a peak proportion of 100% on July 2.

V. C. Bird International Airport 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 at V. C. Bird International Airport is essentially constant during July, remaining around 82°F throughout.

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 at V. C. Bird International Airport 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 at V. C. Bird International Airport are very rapidly increasing during July, increasing by 976°F, from 5,328°F to 6,304°F, over the course of the month.

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 at V. C. Bird International Airport is essentially constant during July, remaining within 0.1 kWh of 6.2 kWh throughout.

The highest average daily incident shortwave solar energy during July is 6.3 kWh on July 22.

For the purposes of this report, the geographical coordinates of V. C. Bird International Airport are 17.137 deg latitude, -61.793 deg longitude, and 49 ft elevation.

The topography within 2 miles of V. C. Bird International Airport contains only modest variations in elevation, with a maximum elevation change of 423 feet and an average elevation above sea level of 56 feet. Within 10 miles contains only modest variations in elevation (1,289 feet). Within 50 miles contains very significant variations in elevation (2,956 feet).

The area within 2 miles of V. C. Bird International Airport is covered by water (41%), cropland (19%), trees (18%), and grassland (12%), within 10 miles by water (68%) and trees (11%), and within 50 miles by water (98%).