October can be termed as a pre-summer month marked by rising temperatures and a significant increase in rainfall. The weather conditions feature warmer temperatures and more frequent rainfall, hinting at the onset of the wet season. The city experiences a temperature high of 29.6°C (85.3°F) and a notable rainfall increase to 103mm (4.06"). This month also marks a progressive increase in the city's relative humidity. The rising temperatures welcomes back the summer clothes after the relatively cooler previous months.
Temperature
San Antonio ushers in October with an average high-temperature of a still moderately hot 29.6°C (85.3°F), showing a close resemblance to the previous month. During October, San Antonio's temperature falls to a steady low-temperature average of 19°C (66.2°F).
Heat index
October's heat index is estimated at a sweltering 35°C (95°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
In San Antonio, the average relative humidity in October is 72%.
Rainfall
In San Antonio, during October, the rain falls for 14.9 days and regularly aggregates up to 103mm (4.06") of precipitation. Throughout the year, there are 153.2 rainfall days, and 865mm (34.06") of precipitation is accumulated.
Daylight
The average length of the day in October is 12h and 42min.
On the first day of the month, sunrise is at 05:29 and sunset at 17:50 -04. On the last day of October, in San Antonio,
Paraguay, sunrise is at 06:01 and sunset at 19:05 -03.
Note: On Sunday, 06. October 2024, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. Daylight Saving Time lasts until Sunday, 23.
March 2025, at 00:00; consequently, the time zone reverts from -03 to -04.
Sunshine
In October, the average sunshine is 8.4h.
UV index
January,
February, October and
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 vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 7 during October morphs into the following directions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.