October weather forecast
Key West, FL

October brings a refreshing change to the monotonous hot and humid regimen in Key West. This month is a transition period from the scorching summer to cooler autumn temperatures. Albeit marginally, the arrival of October sees a drop in both temperatures and rainfall. Known as the beginning of the "dry season", the fresher cleaner air provides a breath of freshness to the city. The month marks a notable escalation in wind speed, reaching a high of 13.7mph (22km/h), providing a noticeable contrast to the prior calm conditions.

Temperature

October's onset in Key West records an average high-temperature of a still warm 82°F (27.8°C), a near match to September's 84.4°F (29.1°C). During October, Key West's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still moderately hot 79.7°F (26.5°C).

Heat index

October's average heat index is appraised at a tropical 87.8°F (31°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

The average relative humidity in October in Key West is 75%.

Rainfall

In Key West, Florida, in October, during 20.1 rainfall days, 4.21" (107mm) of precipitation is typically accumulated. Throughout the year, there are 199.2 rainfall days, and 31.61" (803mm) of precipitation is accumulated.

Ocean temperature

In Key West, in October, the average water temperature is 82.9°F (28.3°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.

Daylight

In October, the average length of the day in Key West, Florida, is 11h and 34min.
On the first day of October, sunrise is at 7:19 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 6:47 pm EDT.

Sunshine

In October, the average sunshine is 7.4h.

UV index

The months with the highest UV index are April through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In October, the maximum UV index of 7 suggests this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.