March weather forecast
Arroyo, PR

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Weather in March

March is characterized by a slight upward tick in both temperature and rainfall at 1.42" (36mm), as Arroyo transitions into the more humid part of the year. Most days are sunlit, but the city may witness occasional overcast skies. Notably, this month experiences a remarkable increase in daylight hours compared to previous months. Therefore, it provides an extended timeframe for locals and tourists to experience the charms of Arroyo. The steady wind during March also contributes to well-balanced weather conditions.

Temperature

The ushering in of March brings an average high-temperature of a still moderately hot 81°F (27.2°C), closely mirroring the 80.6°F (27°C) of February. Arroyo encounters a steady low-temperature average of 71.6°F (22°C) throughout the month of March.

Heat index

The heat index value for March is calculated to be a tropical 86°F (30°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

March is the least humid month, with an average relative humidity of 77%.

Rainfall

In Arroyo, in March, during 19.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 255.3 rainfall days, and 29.41" (747mm) of precipitation is accumulated.

Ocean temperature

The months with the coldest seawater are February and March, with an average ocean temperature of 79.3°F (26.3°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

The average length of the day in March is 12h and 3min.
On the first day of March in Arroyo, sunrise is at 6:42 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:37 pm AST.

Sunshine

The average sunshine in March in Arroyo, Puerto Rico, is 8.6h.

UV index

January through April, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Arroyo. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In March, the maximum UV index of 6 suggests this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Stay aware! UV radiation is magnified when reflecting off sand and water.
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Frequently asked questions

What are the temperatures in Arroyo in March?

The high-temperature in Arroyo during March is 81°F (27.2°C) and the low-temperature is 71.6°F (22°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in March is calculated to be 86°F (30°C).

What is the least humid month in Arroyo?

With an average relative humidity of 77%, March is the least humid month in Arroyo.

What is the average humidity in March in Arroyo?

In Arroyo, Puerto Rico, the average relative humidity in March is 77%.

How much does it rain in Arroyo in March?

In Arroyo, during March, the rain falls for 19.3 days and regularly aggregates up to 1.42" (36mm) of precipitation.

What are the months with the coldest ocean in Arroyo?

February and March, with an average ocean temperature of 79.3°F (26.3°C), are months with the coldest seawater in Arroyo.

What is the ocean temperature in March in Arroyo?

In Arroyo, in March, the average water temperature is 79.3°F (26.3°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in March in Arroyo?

The average day length in March is 12h and 3min.

When is the sunrise / sunset in March in Arroyo?

In March, on the first day of the month, sunrise is at 6:42 am and sunset at 6:30 pm. On the last day of the month, in Arroyo, sunrise is at 6:18 am and sunset at 6:37 pm AST.

How many hours of sunshine does Arroyo have in March?

In Arroyo, the average sunshine duration in March is 8.6h.

When is the lowest UV index in Arroyo?

January through April, November and December, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in March in Arroyo?

In Arroyo, Puerto Rico, the average daily maximum UV index in March is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Arroyo, PR

Average temperature in March - Arroyo, PR
  • Average high temperature in March: 81°F

The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is January (79.9°F).

  • Average low temperature in March: 71.6°F

The months with the highest average low temperature are July and August (76.6°F).
The coldest month (with the lowest average low temperature) is January (71.4°F).

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Average pressure in March
Arroyo, PR

Average pressure in March - Arroyo, PR
  • Average pressure in March: 30"Hg

The months with the highest atmospheric pressure are January and February (30.01"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).

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Average wind speed in March
Arroyo, PR

Average wind speed in March - Arroyo, PR
  • Average wind speed in March: 7.5mph

The windiest month (with the highest average wind speed) is July (8.6mph).
The calmest month (with the lowest average wind speed) is October (6mph).

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Average humidity in March
Arroyo, PR

Average humidity in March - Arroyo, PR
  • Average humidity in March: 77%

The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is March (77%).

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Average rainfall in March
Arroyo, PR

Average rainfall in March - Arroyo, PR
  • Average rainfall in March: 1.42"

The wettest month (with the highest rainfall) is September (4.29").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in March
Arroyo, PR

Average rainfall days in March - Arroyo, PR
  • Average rainfall days in March: 19.3 days

The months with the highest number of rainy days are May and October (25.3 days).
The month with the least rainy days is February (15.4 days).

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Average sea temperature in March
Arroyo, PR

Average sea temperature in March - Arroyo, PR
  • Average sea temperature in March: 79.3°F

The best month for swimming (with the highest average sea temperature) is September (85.4°F).
The coldest months (with the lowest average sea temperature) are February and March (79.3°F).

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Average daylight in March /
Average sunshine in March
Arroyo, PR

Average daylight in March / Average sunshine in March - Arroyo, PR
  • Average daylight in March: 12h and 1min

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 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in March
Arroyo, PR

Average sunshine days in March - Arroyo, PR
  • Average sunshine days in March: 7.5 days

The month with the most sunshine days is January (8.8 days).
The month with the least sunshine days is May (2.7 days).

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Average UV index in March
Arroyo, PR

Average UV index in March - Arroyo, 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).

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Average cloud cover in March
Arroyo, PR

Average cloud cover in March - Arroyo, PR
  • Average cloud cover in March: 33

The months with the most cloud cover are May and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 31).

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Average visibility in March
Arroyo, PR

Average visibility in March - Arroyo, 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).

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Arroyo, Puerto Rico, USA

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