October Weather in Key West, United States

Last updated: February 24, 2025

In October, Key West enjoys a delightful tropical climate with maximum temperatures averaging around 29°C (85°F) and minimums dipping to 20°C (69°F). The average temperature sits comfortably at 27°C (81°F), making it an inviting time for visitors. However, October is also characterized by notable precipitation, with around 133 mm (5.2 in) of rain falling over 18 days, often bringing refreshing showers that nourish the lush surroundings. The humidity level remains relatively high at 79%, contributing to the island's vibrant atmosphere. Embrace the balmy weather and occasional Caribbean rain, perfect for experiencing the unique charm of this stunning destination.

October Temperature in Key West

In October, Key West experiences a delightful transition into cooler weather, with temperatures showcasing a gentle shift from the summer’s heat. The minimum temperature dips to a comfortable 20°C (69°F), while the average climbs to a pleasant 27°C (81°F), peaking at a maximum of 29°C (85°F). This marks a noticeable change from the sweltering highs of summer months, as the island's tropical climate offers a refreshing reprieve for visitors. With daily warmth that encourages outdoor adventures and balmy evenings perfect for sunset watching, October is an ideal time to enjoy the vibrant atmosphere of Key West without the summer crowds.

October Weather in Key West: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Key West, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec717374777982838482817774
Data source: Temperature data for Key West generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Key West

In October, Key West experiences a notable uptick in precipitation, with 133 mm (5.2 in) of rainfall measured over 18 days, making it one of the wetter months of the year. This marks a continuation of the trend observed from the previous month, September, which boasted the highest rainfall at 172 mm (6.8 in) over 17 days. The increased precipitation in October signals the tail end of the wet season, as the region transitions from summer storms to the milder conditions of autumn. As the month progresses, the frequency of rainy days peaks, hinting at the lingering effects of tropical systems typical for this time of year. Ultimately, while October brings significant rain, it also prepares the way for drier months ahead, such as November, which experiences a drop to 83 mm (3.3 in) over only 10 days.

October Precipitation Trends in Key West

The chart displays monthly precipitation patterns in Key West, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec27271840139941031001721338344
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Key West

In October, Key West experiences a humidity level of 79%, marking a slight increase from the drier summer months of June and July, where humidity dipped to 69% and 70%, respectively. As the year progresses, humidity levels consistently rise again after hitting their yearly lows in late spring, with October’s figures aligning more closely with the yearly average. This month serves as a bridge between the humid summer and the more conducive autumn conditions ahead, hinting at the tropical vibrance that defines this island paradise. Notably, October's humidity is comparable to earlier months in the year, such as February and March, reinforcing the seasonal patterns that shape the unique climate of Key West.

October Average Humidity in Key West

This chart illustrates the average monthly humidity levels in Key West, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec81%80%76%73%71%70%70%72%76%79%80%81%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Key West

In October, Key West experiences a UV Index of 10, categorizing it as very high exposure, with a burn time of only 15 minutes under direct sun. This month marks a slight decline from the peak summer months, yet the sun's intensity remains significant, showcasing a transition towards a milder fall season. The UV Index generally trends downward as the year progresses, from an extreme maximum of 13 in June to 10 in October, reflecting the waning strength of sunlight. Those venturing outdoors in Key West should remain vigilant about sun protection during this time, keeping in mind that even a brief dip in UV Index can still pose risks, making sunscreen and protective clothing essential. For more insights on the UV Index throughout the year, visit Key West UV Index.

Maximum UV Index Levels in Key West for October

The chart shows the monthly maximum UV Index (UVI) for Key West in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec79111212131212111086
Data source: Key West October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

October Sunshine in Key West

As the vibrant hues of October unfold in Key West, the sun graces the island with 305 hours of radiant sunshine, providing a warm embrace just before the cooler months set in. This delightful stretch follows a summer peak in July with 351 hours, gradually tapering off yet remaining plentiful. October’s sunshine offers a perfect blend of warmth and comfort, allowing both locals and visitors to revel in outdoor activities. As the year winds down, it’s evident that the island’s sunny disposition continues to shine brightly, making Key West a captivating destination, particularly in this enchanting month.

Monthly Sunshine Duration in Key West: October Highlighted

The October sunshine duration represents the total number of hours Key West experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec228h286h333h340h335h323h351h340h320h305h286h288h
Data source: Key West October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Key West During October

In October, Key West experiences a 49% chance of sunny weather, marking a noticeable shift as the year begins to transition from the heat of summer. This month usually sees improved sunshine compared to the notably dreary summer months of June and August, which dip to just 21% and 28% respectively. While October's sun likelihood is slightly higher than September's 36%, it remains below the sunnier peak of March at 72%. Overall, as the year winds down, October offers a pleasant balance of sun and shade, making it a lovely time to enjoy the vibrant flora and tranquil beaches of this tropical paradise.

Percentage of Sunny Days in October in Key West

The chart illustrates the percentage of sunny days in Key West throughout the year, with October highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Key West experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec43%68%72%64%58%21%40%28%36%49%50%73%
Data source: Key West October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Key West in October

As autumn settles in Key West, October ushers in a gentle decline in daylight, offering about 11 hours of sun—a noticeable shift from the longer summer days. Following the peak brightness of 13 hours in the summer months, daylight begins its gradual retreat, but still allows ample time for beach strolls and sunset views. This trend continues into the cooler months, with daylight dipping further to 10 hours by November and December. Overall, October serves as a bridge between the vibrant long days of summer and the shorter, cozier days of winter, inviting visitors to savor the last warmth of the year before the sun begins to wane more significantly.

Average Daylight Hours in Key West for October

The chart illustrates the variation in daylight duration in Key West throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 47m11h 19m12h 1m12h 44m13h 20m13h 37m13h 27m12h 56m12h 15m11h 32m10h 55m10h 37m
Data source: Key West daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Key West

As October arrives in Key West, the breezy charm of the island transitions from the languid summer months into a more invigorating airflow. The average wind speed during this month is 5.3 m/s (12 mph), slightly lower than the spring's peak but still offering a refreshing contrast to the gentle breezes of September. This pattern reflects a subtle upward trend as the year winds down, with the wind picking up in November to 6.3 m/s (14 mph), suggesting that the island's vibrant atmosphere is once again energized. With October's winds dancing through palm trees and along sandy shores, the island invites both locals and visitors to bask in its mellow yet spirited maritime environment.

Average October Wind Speed in Key West

The chart displays monthly wind speed patterns in Key West, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.66.16.86.06.15.84.75.63.65.3 m/s6.35.5
Data source: Key West October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Key West Compares to Other Months

The weather in Key West changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Key West and find detailed weather information for every month.

In October, the weather is typically warmer, with average temperatures around 27°C (81°F), reaching highs of 29°C (85°F) and lows of 20°C (69°F). This month also sees a significant amount of rainfall, with 133 mm (5.2 in) of precipitation spread over 18 days, contributing to a humid atmosphere with humidity levels around 79%.

In contrast, January presents more moderate conditions, with average temperatures dropping to 22°C (71°F) and a maximum of 26°C (79°F), while the minimum temperature is a cooler 12°C (55°F). The precipitation significantly decreases to 27 mm (1.1 in) over just 5 days, and humidity remains relatively stable at 81%. For a more detailed look at the weather in January, check out Key West weather in January.

October and February present strikingly different weather patterns. In October, temperatures range from a minimum of 20°C (69°F) to a maximum of 29°C (85°F), with an average of 27°C (81°F). The month is also characterized by significant rainfall, receiving 133 mm (5.2 in) over 18 days, contributing to a humid environment with 79% humidity. In contrast, February showcases milder conditions, with temperatures dropping to a minimum of 14°C (58°F) and peaking at around 26°C (80°F), averaging 23°C (74°F). Precipitation is notably less in February, totaling only 27 mm (1.1 in) across just 4 days, while the humidity remains consistent at 79%. For a more detailed look at weather conditions, check out Key West weather in February.

In comparing the weather of October and March, October tends to be warmer and wetter. October experiences minimum temperatures around 20°C (69°F), with averages reaching 27°C (81°F) and maximums of 29°C (85°F). This month also sees substantial rainfall, with about 133 mm (5.2 in) spread over 18 days, resulting in higher humidity levels at 79%. In contrast, March offers milder temperatures, with a minimum of 17°C (62°F), an average of 23°C (74°F), and a maximum of 26°C (80°F). Precipitation is significantly lower in March, at only 18 mm (0.7 in) over just 4 days, leading to a slightly drier atmosphere with 76% humidity. For more detailed information, check out Key West weather in March.

In comparing the weather of October and April, both months exhibit warm temperatures, yet October tends to be slightly warmer with an average of 27°C (81°F) compared to April's average of 25°C (77°F). While the maximum temperature in both months is similar at 29°C (84°F), October's minimum temperature is marginally higher at 20°C (69°F) compared to April's 19°C (67°F). A notable difference is in precipitation; October experiences significantly more rain, with 133 mm (5.2 in) over 18 days, while April sees only 40 mm (1.6 in) over 7 days. Additionally, October's humidity is higher at 79%, overshadowing April's more comfortable 73%. For a detailed look at the climate during April, check out Key West weather in April.

In comparing the weather of October and May, both months offer warm temperatures, with October having a slightly lower average of 27°C (81°F) compared to May's 26°C (79°F). The minimum temperatures in October are 20°C (69°F), which is lower than May's minimum of 22°C (72°F). Interestingly, both months share a maximum temperature of 29°C (84°F), providing warmth throughout the day. However, October experiences more precipitation, with 133 mm (5.2 in) over 18 days, while May has 139 mm (5.5 in) but over just 11 days, resulting in a noticeably higher humidity level of 79% in October compared to 71% in May. For more insights on May weather in Key West, check out Key West weather in May.

When comparing the weather in October and June, both months exhibit warm conditions, but October tends to be slightly cooler with average temperatures ranging from a minimum of 20°C (69°F) to a maximum of 29°C (85°F). In contrast, June features higher temperatures, with minimums around 24°C (76°F) and maximums reaching up to 30°C (87°F). Precipitation is also a notable difference; October experiences more rain with 133 mm (5.2 in) over 18 days, while June sees less, with 94 mm (3.7 in) over 14 days. Additionally, October's humidity is higher at 79%, compared to June's 69%. For those interested in specifics, you can check Key West weather in June for detailed insights.

In comparing the weather between October and July, October tends to be slightly cooler, with average temperatures hovering around 27°C (81°F) compared to July's average of 28°C (83°F). While both months experience warm temperatures, July has a higher minimum temperature of 25°C (78°F) versus October's 20°C (69°F). Additionally, October sees more precipitation with an average of 133 mm (5.2 in) over 18 days, compared to July's 103 mm (4.0 in) over 15 days. The humidity is also higher in October at 79%, compared to 70% in July. For more detailed information about July's weather, check out Key West weather in July.

In comparison to August, October in Key West experiences slightly lower temperatures, with average highs of 29°C (85°F) versus August's peak of 30°C (87°F). While October brings milder minimum temperatures starting from 20°C (69°F) compared to August's 25°C (78°F), it also sees a notable increase in precipitation, averaging 133 mm (5.2 in) over 18 days as opposed to August's 100 mm (3.9 in) over 15 days. Additionally, the humidity in October remains higher at 79%, compared to 72% in August, making October feel more humid despite its cooler averages. For a detailed look at August's weather, check out Key West weather in August.

In comparing the weather of October and September, October offers slightly cooler temperatures, with a minimum of 20°C (69°F) and an average temperature of 27°C (81°F), compared to September's minimum of 25°C (77°F) and average of 28°C (83°F). While October sees a decrease in maximum temperatures, reaching up to 29°C (85°F), September remains slightly warmer, peaking at 30°C (86°F). October also experiences more rainfall, with 133 mm (5.2 in) of precipitation over 18 days, compared to September's 172 mm (6.8 in) over 17 days. Humidity levels are fairly consistent, with October at 79% and September at 76%. For a more detailed look at September's climate, you can check out Key West weather in September.

October and November exhibit similar warm weather patterns, but notable differences exist in their temperature and precipitation. In October, the minimum temperature averages around 20°C (69°F), with an overall average of 27°C (81°F) and highs reaching up to 29°C (85°F). This month also sees higher precipitation levels, with 133 mm (5.2 in) over 18 days, contributing to a humidity level of 79%. In contrast, November has slightly cooler temperatures, with a minimum of 18°C (65°F) and an average of 25°C (77°F), peaking at 28°C (83°F). The month experiences significantly less rainfall, totaling 83 mm (3.3 in) over just 10 days, while humidity remains relatively steady at 80%. For a detailed look at the weather patterns in November, check out Key West weather in November.

In October, the weather is generally warmer, with average temperatures around 27°C (81°F) and maximums reaching up to 29°C (85°F). However, it also brings significant rainfall, with about 133 mm (5.2 in) of precipitation spread over 18 days, resulting in a humidity level of 79%. In contrast, December sees milder temperatures, with a minimum of 15°C (59°F) and an average of 23°C (74°F). The precipitation drops sharply to 44 mm (1.7 in) over just 5 days, while humidity remains relatively high at 81%. For detailed insights into December weather, you can check Key West weather in December.

Compare Key West's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Key West

As October rolls into Key West, the island experiences a subtle shift from the intense heat of summer, offering a comfortable average temperature that hovers around 27°C (81°F). While daytime highs can reach a steamy 29°C (85°F), the evenings bring a welcome reprieve with cooler temperatures that dip to around 20°C (69°F). This month is also marked by an increase in precipitation, seeing rain on approximately 18 days, which adds to the region's lush landscape. The humidity remains elevated at 79%, typical for the tropical climate, yet the rains can refresh the atmosphere, making it feel less stifling than the peak summer months. For those looking to understand more about Key West's dynamic climate, detailed insights can be found at Key West Climate.