March weather forecast
Juana Díaz, PR

March marks the transition from winter to spring in Puerto Rico, USA. With unexpected rainfall climbing to 1.54 in on average, the weather remains generally temperate, ensuring lush, green surroundings. The coastline also comes alive with beachgoers as the seas slowly warm up. The lengthening daylight hours are perfect for experiencing the natural splendor of the island nation. The transition into April brings a greater increase in rainfall paired with slightly higher temperatures.

Temperature

Entering March, Juana Díaz's average high-temperature reads a still warm 82°F (27.8°C), indicating a close resemblance to the previous month's climate. In March, Juana Díaz's temperature tends to fall to an average low of 70.9°F (21.6°C) during the night.

Heat index

During March, the heat index is estimated at a tropical 87.8°F (31°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance 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

March is the least humid month, with an average relative humidity of 76%.

Rainfall

In Juana Díaz, in March, during 18.8 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 249.1 rainfall days, and 28.82" (732mm) of precipitation is accumulated.

Ocean temperature

February and March, with an average ocean temperature of 79.3°F (26.3°C), are months with the coldest seawater in Juana Díaz.
Note: For swimming, diving, or other water activities, temperatures from 77°F (25°C) to 84.2°F (29°C) provide the most enjoyable experience for extended periods without discomfort.

Daylight

In March, the average length of the day in Juana Díaz is 12h and 3min.
On the first day of March, sunrise is at 6:44 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 6:39 pm AST.

Sunshine

In March, the average sunshine in Juana Díaz is 8.7h.

UV index

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In March, the maximum UV index of 6 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Warning! The Sun's UV rays intensify with reflections from sand and water.