October weather forecast
Santa Rita, GU

In October, Santa Rita starts to slowly inch its way out of the rainy season, with rainfall dipping to 8.46" (215mm). The weather carries familiar warm temperatures whilst sea provides still warm waters. Sunlit hours continue their gradual dip, but provide enough room for outdoor adventures. Despite a decrease in rainfall days, the region's flora remains vibrantly green and fresh.

Temperature

The average high-temperature is a still warm 84.4°F (29.1°C) in October, consistent with September. Santa Rita encounters an average temperature dip to a still moderately hot 82.6°F (28.1°C) throughout October, subtly lower than its daytime maximum.

Heat index

In October, the average heat index is calculated to be a very hot 95°F (35°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

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

Rainfall

In Santa Rita, in October, it is raining for 28.7 days, with typically 8.46" (215mm) of accumulated precipitation. Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Ocean temperature

In Santa Rita, in October, the average water temperature is 85.1°F (29.5°C).
Note: For swimming, diving, and similar activities, the water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered delightful, allowing for extended periods of enjoyment without discomfort.

Daylight

In October, the average length of the day is 11h and 50min.
On the first day of the month, sunrise is at 6:10 am and sunset at 6:11 pm. On the last day of October, in Santa Rita, Guam, sunrise is at 6:14 am and sunset at 5:54 pm ChST.

Sunshine

In October, the average sunshine is 6.9h.

UV index

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In October, a daily UV index of 7 turns into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Boost your sun resistance with garments that are densely woven yet spacious. Take note! The UV strength of the Sun elevates when reflected off water and sand.