May weather forecast
Vega Alta, PR

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Weather in May

May witnesses the highest temperature of 82.6°F (28.1°C) and consequently, a rise in the relative humidity of the area. Vega Alta experiences an increase in daylight hours, reaching 13 hours per day. Cloud cover experiences a marginal rise compared to April providing some respite from the rising temperatures. Despite the rise in temperature and humidity, the wind speed in May shows a slight decrease. With a UV index of 7, the month indicates an increased necessity for sun protection during outdoor activities.

Temperature

As Vega Alta steps into May, the average high-temperature holds at a still warm 82.6°F (28.1°C), hinting at a minor fluctuation from the prior month. Vega Alta, during May nights, witnesses an average temperature marginally cooler than its daytime highs, at a still warm 75.7°F (24.3°C).

Heat index

For May, the heat index is appraised at a hot 89.6°F (32°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The months with the highest humidity are May through July and November, with an average relative humidity of 79%.

Rainfall

In Vega Alta, during May, the rain falls for 22.7 days and regularly aggregates up to 3.43" (87mm) of precipitation. Throughout the year, there are 223.5 rainfall days, and 27.95" (710mm) of precipitation is accumulated.

Daylight

The average length of the day in May is 13h and 1min.
On the first day of the month, sunrise is at 5:57 am and sunset at 6:47 pm. On the last day of May, sunrise is at 5:48 am and sunset at 6:58 pm AST.

Sunshine

The months with the most sunshine are May and June, with an average of 10.8h of sunshine.

UV index

The months with the highest UV index are May through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in May interprets into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

How hot is it in May?

The average high-temperature, in May, in Vega Alta, is 82.6°F (28.1°C), while the average low-temperature is 75.7°F (24.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is appraised at 89.6°F (32°C).

What are the most humid months?

The months with the highest humidity are May through July and November, with an average relative humidity of 79%.

What is the average humidity in May?

In May, the average relative humidity is 79%.

How many days does it rain in May?

In May, the rain falls for 22.7 days. Throughout May, 3.43" (87mm) of precipitation is accumulated.

How many hours of daylight does Vega Alta have in May?

The average day length in May is 13h and 1min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 6:58 pm AST.

What are the months with the most sunshine?

The months with the most sunshine are May and June, with an average of 10.8h of sunshine.

How long on average sun shines in May?

In May, the average sunshine duration is 10.8h.

What are the months with the highest UV index?

The months with the highest UV index are May through November, with an average maximum UV index of 7.

How high is the UV index in May?

The average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Vega Alta, PR

Average temperature in May - Vega Alta, PR
  • Average high temperature in May: 82.6°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (79.9°F).

  • Average low temperature in May: 75.7°F

The months with the highest average low temperature are August, September and October (78.4°F).
The coldest month (with the lowest average low temperature) is March (73°F).

Average pressure in May
Vega Alta, PR

Average pressure in May - Vega Alta, PR
  • Average pressure in May: 29.98"Hg

The months with the highest atmospheric pressure are January and February (30.02"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).

Average wind speed in May
Vega Alta, PR

Average wind speed in May - Vega Alta, PR
  • Average wind speed in May: 8.4mph

The windiest month (with the highest average wind speed) is July (10mph).
The calmest month (with the lowest average wind speed) is October (6.8mph).

Average humidity in May
Vega Alta, PR

Average humidity in May - Vega Alta, PR
  • Average humidity in May: 79%

The months with the highest relative humidity are May, June, July and November (79%).
The month with the lowest relative humidity is March (76%).

Average rainfall in May
Vega Alta, PR

Average rainfall in May - Vega Alta, PR
  • Average rainfall in May: 3.43"

The wettest month (with the highest rainfall) is October (3.82").
The driest month (with the least rainfall) is February (0.94").

Average rainfall days in May
Vega Alta, PR

Average rainfall days in May - Vega Alta, PR
  • Average rainfall days in May: 22.7 days

The month with the highest number of rainy days is October (24 days).
The months with the least rainy days are January and February (14.2 days).

Average daylight in May /
Average sunshine in May
Vega Alta, PR

Average daylight in May / Average sunshine in May - Vega Alta, PR
  • Average daylight in May: 13h and 0min

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 0min).

  • Average sunshine in May: 10h and 5min

The months with the most sunshine are May and June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

Average sunshine days in May
Vega Alta, PR

Average sunshine days in May - Vega Alta, PR
  • Average sunshine days in May: 5 days

The month with the most sunshine days is January (9.8 days).
The months with the least sunshine days are October and November (3.5 days).

Average UV index in May
Vega Alta, PR

Average UV index in May - Vega Alta, PR
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April and December (UV index 6).

Average cloud cover in May
Vega Alta, PR

Average cloud cover in May - Vega Alta, PR
  • Average cloud cover in May: 34

The months with the most cloud cover are May, July and November (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 26).

Average visibility in May
Vega Alta, PR

Average visibility in May - Vega Alta, PR
  • Average visibility in May: 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).

Vega Alta, Puerto Rico, USA

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