August weather forecast
Agat, GU

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Weather in August

August carries forward the weather profile of July in Agat, with high rainfall and temperature. This wet period reaches its maximum in August as the rainfall measures up to a significant 9.76" (248mm). Despite the increased rainfall, the town’s visitors enjoy the local attractions amid the tropical temperatures. As the island moves towards September, there is a slight decrease in temperature and rainfall, marking the tail end of the summer.

Temperature

The height of temperatures in Agat is seen during July and August, averaging a high-temperature of 84.7°F (29.3°C).

Heat index

The heat index value during August is computed to be a very hot 95°F (35°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

With an average relative humidity of 76%, August is the least humid month.

Rainfall

In Agat, in August, during 28.9 rainfall days, 9.76" (248mm) of precipitation is typically accumulated. In Agat, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Daylight

In August, the average length of the day is 12h and 34min.
On the first day of August, sunrise is at 6:06 am and sunset at 6:48 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:33 pm ChST.

Sunshine

In Agat, the average sunshine in August is 7.6h.

UV index

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In August, an average UV index of 7 transforms into the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month?

In Agat, the warmest months are July and August, registering an average high-temperature of 84.7°F (29.3°C).

How hot is August?

The high-temperature, in August, in Agat, records 84.7°F (29.3°C), while the low-temperature is 82.4°F (28°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 95°F (35°C).

What is the least humid month in Agat?

With an average relative humidity of 76%, August is the least humid month.

What is the average humidity in August?

In Agat, the average relative humidity in August is 76%.

How much does it rain in August?

In Agat, during August, the rain falls for 28.9 days and regularly aggregates up to 9.76" (248mm) of precipitation.

How many hours of daylight does Agat have in August?

In Agat, the average day length in August is 12h and 34min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:06 am and sunset at 6:48 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:33 pm ChST.

How long on average sun shines in August in Agat?

In August, the average sunshine duration is 7.6h.

What is the month with the highest UV index?

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7.

What is the UV index reading in August?

In August, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health risk 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 August
Agat, GU

Average temperature in August - Agat, GU
  • Average high temperature in August: 84.7°F

The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is February (81.7°F).

  • Average low temperature in August: 82.4°F

The month with the highest average low temperature is June (83.3°F).
The coldest month (with the lowest average low temperature) is February (79.7°F).

Average pressure in August
Agat, GU

Average pressure in August - Agat, GU
  • Average pressure in August: 29.79"Hg

The month with the highest atmospheric pressure is February (29.88"Hg).
The months with the lowest atmospheric pressure are August, September and October (29.79"Hg).

Average wind speed in August
Agat, GU

Average wind speed in August - Agat, GU
  • Average wind speed in August: 9.6mph

The windiest month (with the highest average wind speed) is February (16.3mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

Average humidity in August
Agat, GU

Average humidity in August - Agat, GU
  • Average humidity in August: 76%

The months with the highest relative humidity are January, March, April, May, October, November and December (78%).
The month with the lowest relative humidity is August (76%).

Average rainfall in August
Agat, GU

Average rainfall in August - Agat, GU
  • Average rainfall in August: 9.76"

The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").

Average rainfall days in August
Agat, GU

Average rainfall days in August - Agat, GU
  • Average rainfall days in August: 28.9 days

The months with the highest number of rainy days are July and August (28.9 days).
The month with the least rainy days is February (17.5 days).

Average daylight in August /
Average sunshine in August
Agat, GU

Average daylight in August / Average sunshine in August - Agat, GU
  • Average daylight in August: 12h and 4min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in August: 7h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 18min).

Average sunshine days in August
Agat, GU

Average sunshine days in August - Agat, GU
  • Average sunshine days in August: 1.6 days

The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is September (1.1 days).

Average UV index in August
Agat, GU

Average UV index in August - Agat, GU
  • Average UV index in August: 7

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

Average cloud cover in August
Agat, GU

Average cloud cover in August - Agat, GU
  • Average cloud cover in August: 46

The months with the most cloud cover are January, August and October (Cloud cover 46).
The months with the least cloud cover are May and June (Cloud cover 39).

Average visibility in August
Agat, GU

Average visibility in August - Agat, GU
  • 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).

Agat, Guam, USA

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