May Weather in Duck Key, United States

Last updated: February 24, 2025

Experience the vibrant weather of Duck Key, United States in May, where temperatures typically soar to a maximum of 29°C (84°F), while averaging around 26°C (79°F) and dipping to a comfortable 22°C (72°F) at night. The month brings a touch of summer humidity, averaging 71%, creating a lush and tropical atmosphere. Prepare for occasional rain, as 142 mm (5.6 in) of precipitation falls over approximately 11 days, providing a refreshing contrast to the warm weather. Whether you’re lounging by the beach or exploring the island, May's climate invites you to enjoy the best of Duck Key's natural beauty.

May Temperature in Duck Key

In May, Duck Key, United States, experiences a delightful transition into warmer weather, with temperatures reflecting the region's tropical charm. The minimum temperature rises to 22°C (72°F), providing a comfortable start to mornings. As the month progresses, the average temperature settles at a pleasant 26°C (79°F), inviting outdoor activities and beach outings. The maximum temperature peaks at 29°C (84°F), striking a perfect balance between warmth and cool breezes, making it an ideal time for sun-seekers. This upward trend in temperatures from the previous months marks May as a vibrant kick-off to the summer season, blending mild evenings with balmy days.

May Weather in Duck Key: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Duck Key, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec717474777982838382817773
Data source: Temperature data for Duck Key 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.

May Precipitation in Duck Key

May in Duck Key is notably the wettest month of the year, with precipitation soaring to 142 mm (5.6 in), a stark contrast to the drier conditions experienced in earlier months. While January through April see relatively modest rainfall, May's total reflects an increase in both precipitation and rainy days, as it receives rain on an average of 11 days. This pattern of heavier rainfall sets the stage for the upcoming summer months, which continue to experience substantial precipitation, peaking in September. The transition from spring to summer in Duck Key marks a shift toward a wetter climate, illustrating the region's distinct seasonal variation and underscoring the importance of preparing for the aquatic abundance that May brings.

May Precipitation Trends in Duck Key

The chart displays monthly precipitation patterns in Duck Key, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec2428224414210590962001316944
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Duck Key

In Duck Key, United States, the month of May experiences a drop in humidity to 71%, marking a trend of decreasing moisture levels as spring approaches its finale. This is part of a gradual decline from January's high of 81%, with April recording a slightly higher 73% before the humidity begins to stabilize through the summer months. Interestingly, June, July, and August follow with percentages around the 69%-72% range, suggesting a more balanced atmosphere during the hotter months. The summer humidity then rises again in September, hinting at the dynamic shifts that characterize this tropical paradise throughout the year.

May Average Humidity in Duck Key

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

May UV Index in Duck Key

As we dive into May, Duck Key experiences a UV Index of 12, placing it in the extreme exposure category. With a swift burn time of just 10 minutes, outdoor enthusiasts must tread carefully to protect their skin. This month mirrors the preceding April's conditions, indicating a trend of heightened UV radiation as summer approaches. Following May, June exhibits an even higher UV Index of 13, suggesting that the sun's intensity is not just a fleeting moment but an ongoing pattern through these early summer months. Awareness and preparation are key to enjoying the sun safely in Duck Key, so don’t forget to check out the full details at Duck Key UV Index.

Maximum UV Index Levels in Duck Key for May

The chart shows the monthly maximum UV Index (UVI) for Duck Key in May, 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.
JanFebMarAprMayJunJulAugSepOctNovDec79101212131212121086
Data source: Duck Key May 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.

May Sunshine in Duck Key

May in Duck Key is a delightful continuation of the sun-soaked trend that begins in the spring. With 333 hours of sunshine, it's clear that this month is a prime time to enjoy the outdoors, echoing the bright days of March and April, which recorded 333 hours and 341 hours respectively. As summer approaches, the sun doesn’t shy away, with June and July promising 320 and a peak of 348 hours of sun. The gradual decline in hours through the fall still leaves ample time for basking in the golden rays, making May an ideal month for those seeking warmth and beauty in the Florida Keys. The sunshine hours in Duck Key not only enhance the allure of the area but also create a vibrant atmosphere perfect for relaxation and exploration.

Monthly Sunshine Duration in Duck Key: May Highlighted

The May sunshine duration represents the total number of hours Duck Key experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec233h286h333h341h333h320h348h338h318h306h286h292h
Data source: Duck Key May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Duck Key During May

In Duck Key, United States, the likelihood of sunny weather shows a noticeable trend as the year progresses. With a relatively solid 43% chance of sun in January, the percentage climbs steadily, peaking at 68% in February and remaining strong at 67% in March. As spring unfolds, April offers a respectable 61%, culminating in May with a promising 59% chance of sunshine. This hints at a delightful early summer before the sunshine starts to dwindle, plummeting to 18% by June. Overall, May stands out as a favorable month for sunny days, sandwiched between the vibrant spring and the onset of a more humid summer.

Percentage of Sunny Days in May in Duck Key

The chart illustrates the percentage of sunny days in Duck Key throughout the year, with May 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 Duck Key experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec43%68%67%61%59%18%31%28%35%51%51%71%
Data source: Duck Key May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Duck Key in May

In Duck Key, United States, May heralds the arrival of longer, sunlit days, with a delightful average of 13 hours of daylight. This marks a notable increase from the 12 hours experienced in April, as the area transitions smoothly into the warmth of summer. The upward trend in daylight hours begins in February and peaks in both May and June, creating an idyllic backdrop for outdoor activities and exploration. Following the summer solstice, daylight begins to gradually taper off, but the lingering brightness in May sets a vibrant tone for the month, inviting residents and visitors alike to bask in the beauty of the sun-soaked Floridian paradise.

Average Daylight Hours in Duck Key for May

The chart illustrates the variation in daylight duration in Duck Key throughout the year, with May 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 28m12h 56m12h 15m11h 32m10h 55m10h 37m
Data source: Duck Key daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Duck Key

In Duck Key, United States, May welcomes a gentle breeze with an average wind speed of 5.8 m/s (13 mph), closely mirroring the conditions of the preceding months. As spring transitions into summer, wind patterns remain relatively stable, showing slight fluctuations from April's 5.9 m/s and hinting at a subtle decline into June's 5.6 m/s. This consistency reflects the overall trend of Wind speeds being highest in the earlier months of the year, particularly March's peak of 6.6 m/s (15 mph), before tapering off towards the summer. The warmer months typically bring milder breezes, with July marking a notable drop to 4.4 m/s (10 mph). Overall, May's balmy winds create a perfect backdrop for outdoor activities, inviting both relaxation and adventure amid the stunning natural beauty of Duck Key.

Average May Wind Speed in Duck Key

The chart displays monthly wind speed patterns in Duck Key, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.26.16.65.95.8 m/s5.64.45.33.55.35.85.0
Data source: Duck Key May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Duck Key Compares to Other Months

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

May and January present contrasting weather patterns. May experiences warmer temperatures, with a minimum of 22°C (72°F) and an average reaching 26°C (79°F), peaking at 29°C (84°F). However, it also brings higher precipitation, with 142 mm (5.6 in) spread over 11 days, and a humidity level of 71%. In contrast, January has cooler conditions, featuring a minimum temperature of 11°C (52°F) and an average of 22°C (71°F), maxing out at 26°C (80°F). It is notably drier, receiving only 24 mm (1.0 in) of rain across just 4 days, despite a higher humidity of 81%. For more detailed information, you can check out Duck Key weather in January.

When comparing the weather in May and February, it's clear that May tends to be warmer and wetter. The average temperature in May reaches around 26°C (79°F), with highs of 29°C (84°F), while February experiences milder conditions, averaging 23°C (74°F) and peaking at 26°C (80°F). Additionally, May has significantly higher precipitation, with 142 mm (5.6 in) falling over 11 days, compared to just 28 mm (1.1 in) over 5 days in February. Interestingly, humidity levels are slightly lower in May at 71%, while February boasts a higher humidity of 79%. For a detailed look at February weather, you can visit Duck Key weather in February.

In comparing the weather between May and March, May is noticeably warmer, with average temperatures ranging from a minimum of 22°C (72°F) to a maximum of 29°C (84°F), while March features a more modest range from a minimum of 15°C (60°F) to a maximum of 26°C (80°F). Additionally, May experiences significantly more precipitation, totaling 142 mm (5.6 in) over 11 rainy days, in contrast to March's relatively dry climate with only 22 mm (0.9 in) over 3 days. However, March has a slightly higher humidity level at 76%, compared to May's 71%. For more details on Duck Key weather in March, you can check Duck Key weather in March.

In comparing the weather of April and May, we see some notable differences. May features warmer temperatures overall, with a minimum of 22°C (72°F) and an average of 26°C (79°F), compared to April's minimum of 18°C (65°F) and an average of 25°C (77°F). Both months peak at a maximum of 29°C (84°F), but May is significantly wetter, receiving 142 mm (5.6 in) of precipitation over 11 days, while April only records 44 mm (1.7 in) over 7 days. Additionally, April has a slightly higher humidity level at 73%, compared to May's 71%. For more details, check out Duck Key weather in April.

In comparing the weather between May and June, we see a notable increase in temperatures, with June exhibiting a minimum of 24°C (75°F) and an average of 28°C (82°F), compared to May's minimum of 22°C (72°F) and average of 26°C (79°F). Additionally, June has higher maximum temperatures, reaching up to 31°C (88°F), while May caps at 29°C (84°F). Precipitation decreases in June, with 105 mm (4.1 in) of rain over 16 days, compared to May's 142 mm (5.6 in) over 11 days. Humidity also sees a slight dip, as June records 69% compared to May's 71%. For more detailed insights, you can check Duck Key weather in June.

May and July exhibit distinct weather patterns, with May generally cooler and wetter than July. In May, temperatures range from a minimum of 22°C (72°F) to a maximum of 29°C (84°F), coupled with significant precipitation of 142 mm (5.6 inches) over 11 days, leading to a humidity level of 71%. In contrast, July brings warmer conditions, with temperatures ranging from 25°C (78°F) to 31°C (87°F), yet rainfall is lighter at 90 mm (3.6 inches) across 16 days, resulting in a similar humidity level of 70%. This shift indicates that while July is warmer, it also tends to be slightly drier than May. For more insights into July weather, check out Duck Key weather in July.

May and August both experience warm temperatures, but August tends to be hotter with minimums averaging at 25°C (78°F) compared to May's 22°C (72°F). The average temperature in August reaches 29°C (84°F), while May's average is slightly lower at 26°C (79°F). Additionally, August enjoys less precipitation, with 96 mm (3.8 in) over 16 days, compared to May’s 142 mm (5.6 in) over 11 days. Humidity levels remain relatively consistent, with May at 71% and August slightly higher at 72%. For more detailed insights, you can check Duck Key weather in August.

In comparing the weather between May and September, September typically experiences warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (83°F), while May has a minimum of 22°C (72°F) and an average of 26°C (79°F). Humidity tends to be slightly higher in September at 76%, compared to 71% in May. Additionally, September sees more precipitation, with 200 mm (7.9 in) over 18 days, compared to May's 142 mm (5.6 in) over 11 days. This increased rainfall in September can lead to a more humid atmosphere, making for a noticeable difference in comfort levels. For more detailed information, you can check the Duck Key weather in September.

In comparing the weather in May and October, we observe some intriguing similarities and differences. May boasts slightly higher average temperatures, ranging from a minimum of 22°C (72°F) to a maximum of 29°C (84°F), while October's temperatures are a bit cooler, with a minimum of 19°C (67°F) and a similar maximum of 29°C (85°F). Precipitation is relatively close, with May experiencing 142 mm (5.6 in) over 11 days compared to October's 131 mm (5.2 in) over 18 days, indicating that October tends to see more days of rain, albeit with slightly less overall precipitation. Additionally, humidity levels are higher in October at 79%, compared to May's 71%. For more specific insights into the climate during October, you can check out this link: Duck Key weather in October.

May and November present distinct weather patterns, reflecting the transition from spring to late fall. In May, average temperatures range from a minimum of 22°C (72°F) to a maximum of 29°C (84°F), with a higher precipitation level of 142 mm (5.6 in) spread over 11 days and humidity at 71%. In contrast, November offers slightly cooler conditions, with temperatures fluctuating between 17°C (63°F) and 28°C (83°F) and considerably less rain, totaling 69 mm (2.7 in) over the same 11 days. However, the humidity increases to 80% in November, creating a more humid atmosphere as the month progresses. For more details about the weather in November, you can check Duck Key weather in November.

In comparing the weather of May and December, May presents a warmer and more humid climate with average temperatures around 26°C (79°F) and maximums reaching up to 29°C (84°F). It also experiences more rainfall, with precipitation totaling 142 mm (5.6 in) over about 11 days. In contrast, December offers a cooler temperature range, averaging 23°C (74°F) during the day, with a minimum of 14°C (58°F) at night. Rainfall in December is significantly lower, with only 44 mm (1.7 in) across 7 days. Interestingly, December has a slightly higher humidity level at 81%, compared to May's 71%. For more details, check out Duck Key weather in December.

Compare Duck Key's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Duck Key

As May unfolds in Duck Key, the weather begins to shift, welcoming the warmth and beauty of late spring. With average temperatures rising to a pleasant 26°C (79°F) and maximums reaching a comfortable 29°C (84°F), this month contrasts sharply with the cooler and drier sensations of earlier months. However, May also signals the start of the rainy season, bringing with it an increase in precipitation, with about 142 mm (5.6 in) falling across roughly 11 days. This combination of warmth and humidity, averaging at 71%, creates a lush, vibrant atmosphere that sets the stage for summer adventures. For more detailed weather insights, check out Duck Key Climate.