March weather forecast
Barthélemy, French Guiana

Barthélemy in March ushers in a subtle decline in rainfall, down to 128mm (5.04"), a contrast from February’s 163mm (6.42"). Yet, March continues the trend of a tropical climate with a combination of high humidity and significant rainfall. Daylight reaches 12.1 hours, hinting at the impending transition towards dryer months. Wind speeds remain relatively consistent, providing a gentle breeze that mitigates the tropical humidity. Therefore, March's weather in Barthélemy is distinguished by a decrease in rainfall, yet a preservation of its tropical climate characteristics.

Temperature

Barthélemy commences March with an average high-temperature of a still warm 28.3°C (82.9°F), maintaining a close resemblance to the previous month. March nights witness a mild cool down to an average low of 24.2°C (75.6°F).

Heat index

March's average heat index is evaluated at a hot 34°C (93.2°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In March, the average relative humidity is 84%.

Rainfall

In Barthélemy, during March, the rain falls for 27.2 days and regularly aggregates up to 128mm (5.04") of precipitation. Throughout the year, in Barthélemy, there are 277 rainfall days, and 1707mm (67.2") of precipitation is accumulated.

Daylight

The average length of the day in March in Barthélemy, French Guiana, is 12h and 6min.
On the first day of March in Barthélemy, sunrise is at 06:41 and sunset at 18:43. On the last day of the month, sunrise is at 06:29 and sunset at 18:38 -03.

Sunshine

In March, the average sunshine is 6h.

UV index

January through May and December, with an average maximum UV index of 6, are months with the lowest UV index in Barthélemy, French Guiana. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In March, an average UV index of 6 transforms into the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.