October weather forecast
Key Largo, FL

October brings noticeable changes in Key Largo's weather, with temperatures falling compared to September. The declining heat welcomes in a period of relief after the intense summer months. The duration of sunshine hours shortens as the days grow shorter, signifying the onset of autumn. The rainfall starts to descend significantly, making way for a drier period ahead. The maximum temperature reaches 82.2°F (27.9°C) in October, with 3.19" (81mm) of rainfall recorded.

Temperature

Key Largo transitions into October recording an average high-temperature of a still warm 82.2°F (27.9°C), closely aligning with the preceding month's temperature. In October, Key Largo experiences a marginal drop in temperature, with averages of 78.8°F (26°C) at night.

Heat index

During October, the heat index is estimated at a hot 87.8°F (31°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

The average relative humidity in October is 75%.

Rainfall

In Key Largo, in October, during 18.2 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. In Key Largo, Florida, during the entire year, the rain falls for 190.1 days and collects up to 27.05" (687mm) of precipitation.

Ocean temperature

In Key Largo, the average seawater temperature in October is 82.9°F (28.3°C).
Note: Surface water temperatures falling between 77°F (25°C) and 84.2°F (29°C) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

The average length of the day in October in Key Largo is 11h and 34min.
On the first day of October, sunrise is at 7:14 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 6:41 pm EDT.

Sunshine

In October, the average sunshine is 6.9h.

UV index

The months with the highest UV index are April through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in October transforms into this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Warning! Sand and water reflections boost the intensity of UV exposure.