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

October weather forecast and climate
Hagåtña, GU

October, the same as September, is another warm autumn month in Hagåtña, Guam, with average temperature varying between 84.4°F (29.1°C) and 82.6°F (28.1°C).

Temperature

In Hagåtña, the average high-temperature remains the same as in September - a still warm 84.4°F (29.1°C). In Hagåtña, in October, the average low-temperature is 82.6°F (28.1°C).

Heat index

In October, the average heat index is evaluated at a hot 94.3°F (34.6°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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

January, March through May, October through December, with an average relative humidity of 78%, are most humid months in Hagåtña, Guam.

Rainfall

In Hagåtña, during October, the rain falls for 28.7 days and regularly aggregates up to 8.46" (215mm) of precipitation. Throughout the year, in Hagåtña, Guam, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Ocean temperature

In Hagåtña, in October, 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 October, the average length of the day is 11.8h.

Sunshine

In October, the average sunshine is 6.9h.

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 value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in October transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in October in Hagåtña?

The average high-temperature, in October, is 84.4°F (29.1°C), while the average low-temperature is 82.6°F (28.1°C). In October, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, is appraised at 94.3°F (34.6°C).

What are the most humid months in Hagåtña?

Months with the highest humidity are January, March through May, October through December, with an average relative humidity of 78%.

What is the average humidity in October in Hagåtña?

In Hagåtña, the average relative humidity in October is 78%.

How much does it rain in Hagåtña in October?

In Hagåtña, Guam, in October, during 28.7 rainfall days, 8.46" (215mm) of precipitation is typically accumulated.

What is the ocean temperature in October in Hagåtña?

In Hagåtña, in October, the average water 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 October in Hagåtña?

In Hagåtña, Guam, the average length of the day in October is 11.8h.

How long on average sun shines in October in Hagåtña?

In October, the average sunshine in Hagåtña is 6.9h.

When is the highest UV index in Hagåtña?

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 October in Hagåtña?

In October, the average daily maximum UV index in Hagåtña is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in October - Hagåtña, GU
  • Average high temperature in October: 29.1°C

The 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 October: 28.1°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 October - Hagåtña, GU
  • Average humidity in October: 78%

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 October - Hagåtña, GU
  • Average rainfall in October: 215mm

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

Average rainfall days in October - Hagåtña, GU
  • Average rainfall days in October: 28.7 days

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 sea temperature in October - Hagåtña, GU
  • Average sea temperature in October: 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 October / Average sunshine in October - Hagåtña, GU
  • Average daylight in October: 11.8h

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

  • Average sunshine in October: 6.9h

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

Average UV index in October - Hagåtña, GU
  • Average UV index in October: 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).