Arroyo
Puerto Rico, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Arroyo, PR

January, the same as December, is a moderately hot winter month in Arroyo, Puerto Rico, with average temperature fluctuating between 71.6°F (22°C) and 82.4°F (28°C). The coldest month is January, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 71.6°F (22°C). Weather in January »
The last month of the winter, February, is also a moderately hot month in Arroyo, Puerto Rico, with average temperature varying between 84.2°F (29°C) and 69.8°F (21°C). In February, the average high-temperature is almost the same as in January - a still moderately hot 84.2°F (29°C). Weather in February »

The first month of the spring, March, is still a warm month in Arroyo, Puerto Rico, with average temperature varying between 71.6°F (22°C) and 84.2°F (29°C). In Arroyo, the average high-temperature remains the same as in February - a still warm 84.2°F (29°C). Weather in March »

April in Arroyo, Puerto Rico, is a tropical spring month, with temperature in the range of an average high of 86°F (30°C) and an average low of 71.6°F (22°C). In Arroyo, Puerto Rico, the average high-temperature is practically the same as in March - a hot 86°F (30°C). Weather in April »

May, the last month of the spring, in Arroyo, is another tropical month, with temperature in the range of an average high of 86°F (30°C) and an average low of 73.4°F (23°C). In May, the average high-temperature remains the same as in April - a still tropical 86°F (30°C). Weather in May »

June, the first month of the summer, in Arroyo, is still a hot month, with average temperature fluctuating between 87.8°F (31°C) and 75.2°F (24°C). The warmest months are June through October, with an average high-temperature of 87.8°F (31°C). Weather in June »

July, like June, is another tropical summer month in Arroyo, Puerto Rico, with average temperature ranging between max 87.8°F (31°C) and min 75.2°F (24°C). June through October, with an average high-temperature of 87.8°F (31°C), are the warmest months. Weather in July »

August, the last month of the summer, in Arroyo, is another tropical month, with average temperature fluctuating between 75.2°F (24°C) and 87.8°F (31°C). June through October, with an average high-temperature of 87.8°F (31°C), are the warmest months. Weather in August »

The first month of the autumn, September, is still a tropical month in Arroyo, Puerto Rico, with average temperature varying between 75.2°F (24°C) and 87.8°F (31°C). June through October, with an average high-temperature of 87.8°F (31°C), are the warmest months. Weather in September »

October, like September, is another hot autumn month in Arroyo, Puerto Rico, with temperature in the range of an average low of 75.2°F (24°C) and an average high of 87.8°F (31°C). The warmest months are June through October, with an average high-temperature of 87.8°F (31°C). Weather in October »

November, the last month of the autumn, in Arroyo, is another hot month, with average temperature fluctuating between 73.4°F (23°C) and 86°F (30°C). In Arroyo, the average high-temperature in November is essentially the same as in October - a still tropical 86°F (30°C). Weather in November »

The first month of the winter, December, is also a moderately hot month in Arroyo, Puerto Rico, with average temperature ranging between max 84.2°F (29°C) and min 71.6°F (22°C). In December, the average high-temperature is relatively the same as in November - a moderately hot 84.2°F (29°C). Weather in December »

What is the coldest month in Arroyo?

The coldest month is January, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 71.6°F (22°C).

How many days does it rain in Arroyo?

Throughout the year, there are 206 rainfall days, and 47.6" (1208mm) of precipitation is accumulated.

What is the month with the lowest UV index in Arroyo?

January and December, with an average maximum UV index of 8, are months with the lowest UV index in Arroyo.

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. 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 driest month in Arroyo?

March is the month with the least rainfall. Rain falls for 15 days and accumulates 1" (26mm) of precipitation.

What are the months with the most sunshine in Arroyo?

March, April, June through August, with an average of 9h of sunshine, are months with the most sunshine in Arroyo.

When is the highest UV index in Arroyo?

March through September, with an average maximum UV index of 12, are months with the highest UV index in Arroyo, Puerto Rico.

What are the warmest months in Arroyo?

Warmest months in Arroyo are June through October, with an average high-temperature of 87.8°F (31°C).

When are the longest days in Arroyo?

June has the longest days of the year in Arroyo, with an average of 13.2h of daylight.

What is the wettest month in Arroyo?

September is the month with the most rainfall in Arroyo, Puerto Rico. Rain falls for 17 days and accumulates 7.1" (181mm) of precipitation.

When is the ocean warmest in Arroyo?

September is the month with the warmest seawater, with an average ocean temperature of 85.5°F (29.7°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the least sunshine in Arroyo?

Months with the least sunshine are October through December, with an average of 7h of sunshine.

What is the month with the shortest days in Arroyo?

The month with the shortest days in Arroyo, Puerto Rico, is December, with an average of 11.1h of daylight.
Average temperature - Arroyo, PR
Average rainfall - Arroyo, PR
Average rainfall days - Arroyo, PR
Average sea temperature - Arroyo, PR

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

Average daylight / Average sunshine - Arroyo, PR

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11.1h).

Months with most sunshine are March, April, June, July and August (Average sunshine: 9h).
Months with least sunshine are October, November and December (Average sunshine: 7).

Average UV index - Arroyo, PR

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 8).