August weather forecast
Guánica, PR

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Weather in August

August carries on the wet season trend with abundant rain showers and continued warm temperatures. Its elevated sea temperature of 84.5°F (29.2°C) provides the warmest seawater conditions of the year, making beaches more attractive to visitors. As per the weather trend, days in August are still long, offering good daylight for sightseeing and exploration. Despite the increased humidity, Guánica continues to shine as a great holiday destination offering a blend of natural beauty and deeply-rooted cultural heritage. Be it exploring bio-reserves or indulging in the local festivities, there is plenty on offer for a memorable holiday.

Temperature

August registers as the month with the highest average temperatures, reaching 86.5°F (30.3°C) at its peak and 76.6°F (24.8°C) at the lowest.

Heat index

August's mean heat index is calculated to be a torrid 100.4°F (38°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for 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.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Guánica, the average relative humidity in August is 77%.

Rainfall

In August, the rain falls for 20.2 days. Throughout August, 3.11" (79mm) of precipitation is accumulated. In Guánica, during the entire year, the rain falls for 224.9 days and collects up to 23.58" (599mm) of precipitation.

Snowfall

January through August, October through December are months without snowfall.

Ocean temperature

In August, the average ocean temperature is 84.6°F (29.2°C).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 77°F (25°C) to 84.2°F (29°C) is very pleasurable for extended periods, without any discomfort.

Daylight

In August, the average length of the day is 12h and 43min.
On the first day of August, sunrise is at 6:06 am and sunset at 7:01 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:42 pm AST.

Sunshine

In Guánica, the average sunshine in August is 9h.

UV index

April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 in August transforms into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

August tends to be the warmest month, with temperatures averaging a daily high of 86.5°F (30.3°C) and a low of 76.6°F (24.8°C).

Is it hot during August?

An average high-temperature, in August, in Guánica, is 86.5°F (30.3°C) and the average low-temperature is 76.6°F (24.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 100.4°F (38°C).

What is the average humidity in August?

In August, the average relative humidity is 77%.

How much does it rain in August?

In August, the rain falls for 20.2 days. Throughout August, 3.11" (79mm) of precipitation is accumulated.

When it does not snow?

In Guánica, snow does not fall in January through August, October through December.

Does it snow in August?

In Guánica, in August, it doesn't snow. In September, it regularly snows.

What is the water temperature in August?

In August, the average ocean temperature is 84.6°F (29.2°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.

How many hours of daylight does Guánica have in August?

In Guánica, Puerto Rico, the average day length in August is 12h and 43min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:06 am and sunset at 7:01 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:42 pm AST.

How many hours of sunshine does Guánica have in August?

The average sunshine duration in August is 9h.

What are the months with the highest UV index in Guánica?

April through October, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in August?

The average daily maximum UV index in August in Guánica, Puerto Rico, is 7. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Guánica, PR

Average temperature in August - Guánica, PR
  • Average high temperature in August: 86.5°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 (81.9°F).

  • Average low temperature in August: 76.6°F

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

Average pressure in August
Guánica, PR

Average pressure in August - Guánica, PR
  • Average pressure in August: 29.96"Hg

The months with the highest atmospheric pressure are January and February (30.01"Hg).
The month with the lowest atmospheric pressure is October (29.89"Hg).

Average wind speed in August
Guánica, PR

Average wind speed in August - Guánica, PR
  • Average wind speed in August: 7.5mph

The windiest month (with the highest average wind speed) is July (8mph).
The calmest month (with the lowest average wind speed) is November (5.6mph).

Average humidity in August
Guánica, PR

Average humidity in August - Guánica, PR
  • Average humidity in August: 77%

The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is March (75%).

Average rainfall in August
Guánica, PR

Average rainfall in August - Guánica, PR
  • Average rainfall in August: 3.11"

The wettest month (with the highest rainfall) is September (3.58").
The driest month (with the least rainfall) is January (0.71").

Average rainfall days in August
Guánica, PR

Average rainfall days in August - Guánica, PR
  • Average rainfall days in August: 20.2 days

The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is February (14.8 days).

Average snowfall days in August
Guánica, PR

Average snowfall days in August - Guánica, PR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

Average sea temperature in August
Guánica, PR

Average sea temperature in August - Guánica, PR
  • Average sea temperature in August: 84.5°F

The best month for swimming (with the highest average sea temperature) is September (85°F).
The coldest month (with the lowest average sea temperature) is February (79.1°F).

Average daylight in August /
Average sunshine in August
Guánica, PR

Average daylight in August / Average sunshine in August - Guánica, PR
  • Average daylight in August: 12h and 4min

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 August: 9h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).

Average sunshine days in August
Guánica, PR

Average sunshine days in August - Guánica, PR
  • Average sunshine days in August: 7.7 days

The month with the most sunshine days is June (12.2 days).
The month with the least sunshine days is November (5.1 days).

Average UV index in August
Guánica, PR

Average UV index in August - Guánica, PR
  • Average UV index in August: 7

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

Average cloud cover in August
Guánica, PR

Average cloud cover in August - Guánica, PR
  • Average cloud cover in August: 26

The month with the most cloud cover is May (Cloud cover 30).
The months with the least cloud cover are January and February (Cloud cover 22).

Average visibility in August
Guánica, PR

Average visibility in August - Guánica, PR
  • Average visibility in August: 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).

Guánica, Puerto Rico, USA

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