April weather forecast
Arroyo, PR

April weather in Arroyo, Puerto Rico, indicates a noticeable climb in the heat index and a rise in humidity. It also brings with it an escalation in rainfall amounts to 1.93" (49mm), signaling the onset of the wet season. The month typically sees a mix of sunny and cloudy days. Despite relatively higher temperature levels, the wind speed remains steady, ensuring a reasonably comfortable environment. The prolonged daylight duration during April delivers more time to enjoy the tropical character of the region.

Temperature

With the onset of April in Arroyo, a modest change to a still moderately hot 81.9°F (27.7°C) from March's 81°F (27.2°C) is noted in high-temperature. In Arroyo, the nighttime temperature shows a slight difference from the daytime high, averaging to a pleasant 73°F (22.8°C) during April.

Heat index

For most parts of April, the heat index is calculated to be a hot 87.8°F (31°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

The average relative humidity in April in Arroyo is 78%.

Rainfall

In April, in Arroyo, the rain falls for 21.2 days. Throughout April, 1.93" (49mm) of precipitation is accumulated. In Arroyo, during the entire year, the rain falls for 255.3 days and collects up to 29.41" (747mm) of precipitation.

Ocean temperature

In April, the average ocean temperature is 81°F (27.2°C).
Note: Water temperature ranging from 77°F (25°C) to 84.2°F (29°C) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

In April, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 6:17 am and sunset at 6:37 pm. On the last day of April, sunrise is at 5:57 am and sunset at 6:45 pm AST.

Sunshine

The average sunshine in April in Arroyo 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 value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in April transforms into the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Warning! Sand and water reflections boost the intensity of UV exposure.