February Weather in French Guiana French Guiana

Daily high temperatures are around 83°F, rarely falling below 80°F or exceeding 86°F. The lowest daily average high temperature is 83°F on February 8.

Daily low temperatures are around 74°F, rarely falling below 72°F or exceeding 77°F.

For reference, on October 1, the hottest day of the year, temperatures in French Guiana typically range from 72°F to 89°F, while on September 10, the coldest day of the year, they range from 72°F to 89°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.

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The month of February in French Guiana experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 70% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 69% on February 8.

The clearest day of the month is February 8, with clear, mostly clear, or partly cloudy conditions 31% of the time.

For reference, on May 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 76%, while on August 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In French Guiana, the chance of a wet day over the course of February is essentially constant, remaining around 66% throughout.

For reference, the year's highest daily chance of a wet day is 93% on May 31, and its lowest chance is 23% on September 25.

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 February in French Guiana is decreasing, starting the month at 10.8 inches, when it rarely exceeds 20.1 inches or falls below 2.7 inches, and ending the month at 9.8 inches, when it rarely exceeds 16.8 inches or falls below 3.7 inches.

Over the course of February in French Guiana, the length of the day is essentially constant. The shortest day of the month is February 1, with 11 hours, 57 minutes of daylight and the longest day is February 29, with 12 hours, 2 minutes of daylight.

The latest sunrise of the month in French Guiana is 6:47 AM on February 4 and the earliest sunrise is 4 minutes earlier at 6:43 AM on February 29.

The earliest sunset is 6:44 PM on February 1 and the latest sunset is 1 minute, 54 seconds later at 6:46 PM on February 18.

Daylight saving time is not observed in French Guiana during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:23 AM and sets 12 hours, 21 minutes later, at 6:44 PM, while on December 21, the shortest day of the year, it rises at 6:33 AM and sets 11 hours, 54 minutes later, at 6:27 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 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.

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 French Guiana is essentially constant during February, remaining around 100% throughout.

For reference, on January 1, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 14, the least muggy day of the year, there are muggy conditions 100% 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 French Guiana is essentially constant during February, remaining within 0.1 miles per hour of 7.3 miles per hour throughout.

For reference, on February 18, the windiest day of the year, the daily average wind speed is 7.4 miles per hour, while on July 14, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.

The highest daily average wind speed during February is 7.4 miles per hour on February 19.

The hourly average wind direction in French Guiana throughout February is predominantly from the east, with a peak proportion of 82% on February 1.

French Guiana 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 French Guiana is essentially constant during February, remaining around 80°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 in French Guiana 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 French Guiana are rapidly increasing during February, increasing by 786°F, from 877°F to 1,662°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 in French Guiana is essentially constant during February, remaining within 0.1 kWh of 5.6 kWh throughout.

For the purposes of this report, the geographical coordinates of French Guiana are 4.000 deg latitude, -53.000 deg longitude, and 0 ft elevation.

The topography within 2 miles of French Guiana 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 French Guiana is covered by trees (100%), within 10 miles by trees (99%), and within 50 miles by trees (97%).