Hagåtña
Guam, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Hagåtña, GU

July, like June, in Hagåtña, Guam, is a moderately hot summer month, with average temperature varying between 84.7°F (29.3°C) and 82.9°F (28.3°C).

Temperature

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

Heat index

The average heat index in July is evaluated at a hot 94.8°F (34.9°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, pregnancy, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

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

Rainfall

In July, in Hagåtña, the rain falls for 28.9 days. Throughout July, 7.52" (191mm) of precipitation is accumulated. Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Ocean temperature

In Hagåtña, the average water temperature is 85.1°F (29.5°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Hagåtña, the average length of the day in July is 12.8h.

Sunshine

In July, the average sunshine in Hagåtña, Guam, 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 in Hagåtña, Guam. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the warmest month in Hagåtña?

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

What is the temperature in July in Hagåtña?

In Hagåtña, Guam, in July, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 82.9°F (28.3°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is estimated at 94.8°F (34.9°C).

What is the average humidity in July in Hagåtña?

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

How many days does it rain in July in Hagåtña?

In Hagåtña, Guam, during July, the rain falls for 28.9 days and regularly aggregates up to 7.52" (191mm) of precipitation.

What is the ocean temperature in July in Hagåtña?

In July, the average ocean temperature is 85.1°F (29.5°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.

What is the average length of the day in July in Hagåtña?

In July, the average length of the day in Hagåtña, Guam, is 12.8h.

How long on average sun shines in July in Hagåtña?

In Hagåtña, Guam, the average sunshine in July is 8.6h.

When is the highest UV index in Hagåtña?

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

What is the UV index intensity in July in Hagåtña?

In July, the average daily maximum UV index in Hagåtña, Guam, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.
Average temperature in July - Hagåtña, GU
  • Average high temperature in July: 29.3°C

Warmest months (with the highest average high temperature) are July and August (29.3°C).
The month with the lowest average high temperature is February (27.6°C).

  • Average low temperature in July: 28.3°C

The month with the highest average low temperature is June (28.5°C).
The coldest month (with the lowest average low temperature) is February (26.5°C).

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

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 July - Hagåtña, GU
  • Average rainfall in July: 191mm

The wettest month (with the highest rainfall) is September (261mm).
The driest month (with the lowest rainfall) is March (46mm).

Average rainfall days in July - Hagåtña, GU
  • Average rainfall days in July: 28.9 days

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

Average sea temperature in July - Hagåtña, GU
  • Average sea temperature in July: 29.5°C

The best month for swimming (with the highest average sea temperature) is August (29.7°C).
The coldest month (with the lowest average sea temperature) is February (27.8°C).

Average daylight in July / Average sunshine in July - Hagåtña, GU
  • Average daylight in July: 12.8h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.3h).

  • Average sunshine in July: 8.6h

The month with most sunshine is June (Average sunshine: 10.6h).
The month with least sunshine is November (Average sunshine: 6.3h).

Average UV index in July - Hagåtña, GU
  • Average UV index in July: 7

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).