March weather forecastJuana Díaz, PR
March
Weather in March
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
With the onset of March, the average high-temperature registers at a still warm 82°F (27.8°C), subtly different from February's 81.5°F (27.5°C). Juana Díaz usually reports an average low-temperature of 70.9°F (21.6°C) during the month of March.Heat index
The heat index in March is computed to be a hot 87.8°F (31°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The least humid month is March, with an average relative humidity of 76%.Rainfall
In Juana Díaz, during March, the rain falls for 18.8 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Juana Díaz, during the entire year, the rain falls for 249.1 days and collects up to 28.82" (732mm) of precipitation.Ocean temperature
February and March, with an average ocean temperature of 79.3°F (26.3°C), are months with the coldest seawater.Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.
Daylight
In Juana Díaz, the average length of the day in March is 12h and 3min.On the first day of March in Juana Díaz, 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 Juana Díaz, Puerto Rico, the average sunshine in March 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 of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In March, the maximum UV index of 6 translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Alert! UV radiation becomes sharper due to reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Juana Díaz, PR
- Average high temperature in March: 82°F
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (81°F).
- Average low temperature in March: 70.9°F
The month with the highest average low temperature is August (76.6°F).
The coldest months (with the lowest average low temperature) are February and March (70.9°F).
Average pressure in March
Juana Díaz, PR
- Average pressure in March: 30"Hg
The months with the highest atmospheric pressure are January and February (30.01"Hg).
The months with the lowest atmospheric pressure are October and November (29.9"Hg).
Average wind speed in March
Juana Díaz, PR
- Average wind speed in March: 6.8mph
The windiest month (with the highest average wind speed) is July (8mph).
The calmest month (with the lowest average wind speed) is November (5.5mph).
Average humidity in March
Juana Díaz, PR
- Average humidity in March: 76%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is March (76%).
Average rainfall in March
Juana Díaz, PR
- Average rainfall in March: 1.54"
The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in March
Juana Díaz, PR
- Average rainfall days in March: 18.8 days
The month with the highest number of rainy days is October (24.8 days).
The month with the least rainy days is February (15 days).
Average sea temperature in March
Juana Díaz, PR
- Average sea temperature in March: 79.3°F
The best month for swimming (with the highest average sea temperature) is September (85.3°F).
The coldest month (with the lowest average sea temperature) is March (79.3°F).
Average daylight in March /
Average sunshine in March
Juana Díaz, PR
- Average daylight in March: 12h and 6min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in March: 8h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 54min).
Average sunshine days in March
Juana Díaz, PR
- Average sunshine days in March: 7.6 days
The month with the most sunshine days is March (7.6 days).
The month with the least sunshine days is October (2.6 days).
Average UV index in March
Juana Díaz, PR
- Average UV index in March: 6
The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 6).
Average cloud cover in March
Juana Díaz, PR
- Average cloud cover in March: 29
The month with the most cloud cover is May (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 25).
Average visibility in March
Juana Díaz, PR
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





