July weather forecast
Dededo, GU

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Weather in July

July presents a phenomenal rainfall surge, rising to a peak average of 7.52" (191mm). The temperature slightly steps up to 84.7°F (29.3°C), tying with the forthcoming August for the highest yearly temperature in Dededo. The month's high rainfall gives an added allure to the cascading waterfalls on the island, maximizing their striking beauty. The moist, tropical climate stimulates the growth of the local flora, transforming the landscape into an emerald green paradise. Those who enjoy a rain-soaked environment will find July to be an optimal period for a visit.

Temperature

The highest point of temperatures falls in July and August, when the average high-temperature ascends to 84.7°F (29.3°C).

Heat index

July's average heat index is evaluated at a torrid 95°F (35°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. 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 are quite important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In July, the average relative humidity is 77%.

Rainfall

In Dededo, in July, it is raining for 28.9 days, with typically 7.52" (191mm) of accumulated precipitation. In Dededo, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Daylight

The average length of the day in July in Dededo is 12h and 50min.
On the first day of July, sunrise is at 5:57 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:48 pm ChST.

Sunshine

The average sunshine in July in Dededo is 8.6h.

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 reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 7 translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What month is the hottest in Dededo?

The months of July and August are noted for their peak temperatures, with an average high-temperature of 84.7°F (29.3°C).

How hot is it in Dededo in July?

In July, the average high-temperature and low-temperature in Dededo, Guam, are 84.7°F (29.3°C) and 82.9°F (28.3°C) respectively. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 95°F (35°C).

What is the average humidity in July in Dededo?

In July, the average relative humidity in Dededo is 77%.

How much does it rain in Dededo in July?

In Dededo, Guam, in July, during 28.9 rainfall days, 7.52" (191mm) of precipitation is typically accumulated.

How many hours of daylight does Dededo have in July?

In Dededo, Guam, the average day length in July is 12h and 50min.

When is the sunrise / sunset in July in Dededo?

In July, on the first day of the month, sunrise is at 5:57 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:48 pm ChST.

How long on average sun shines in July in Dededo?

The average sunshine duration in July is 8.6h.

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

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

What is the UV index intensity in July in Dededo?

In Dededo, Guam, the average daily maximum UV index in July is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from 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 July
Dededo, GU

Average temperature in July - Dededo, GU
  • Average high temperature in July: 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 July: 82.9°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).

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Average pressure in July
Dededo, GU

Average pressure in July - Dededo, GU
  • Average pressure in July: 29.8"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).

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Average wind speed in July
Dededo, GU

Average wind speed in July - Dededo, GU
  • Average wind speed in July: 10.3mph

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).

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Average humidity in July
Dededo, GU

Average humidity in July - Dededo, GU
  • Average humidity in July: 77%

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%).

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Average rainfall in July
Dededo, GU

Average rainfall in July - Dededo, GU
  • Average rainfall in July: 7.52"

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

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Average rainfall days in July
Dededo, GU

Average rainfall days in July - Dededo, GU
  • Average rainfall days in July: 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).

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Average daylight in July /
Average sunshine in July
Dededo, GU

Average daylight in July / Average sunshine in July - Dededo, GU
  • Average daylight in July: 12h and 5min

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 18min).

  • Average sunshine in July: 8h 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).

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Average sunshine days in July
Dededo, GU

Average sunshine days in July - Dededo, GU
  • Average sunshine days in July: 1.4 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).

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Average UV index in July
Dededo, GU

Average UV index in July - Dededo, GU
  • Average UV index in July: 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).

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Average cloud cover in July
Dededo, GU

Average cloud cover in July - Dededo, GU
  • Average cloud cover in July: 44

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).

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Average visibility in July
Dededo, GU

Average visibility in July - Dededo, GU
  • Average visibility in July: 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).

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Dededo, Guam, USA

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