July Weather in Key Biscayne, United States

Last updated: February 24, 2025

Experience the vibrant July weather of Key Biscayne, United States, where temperatures offer a tropical embrace. With daily highs reaching up to 33°C (92°F) and an average temperature of 28°C (83°F), this summer paradise is perfect for sun-seekers. However, prepare for the occasional rain, as the month sees approximately 173 mm (6.8 in) of precipitation spread across 26 days, making humidity a notable 70%. Whether you’re lounging on the beach or exploring the island, be ready for the dynamic interplay of sunshine and showers that characterizes this lush coastal destination.

July Temperature in Key Biscayne

In Key Biscayne, July brings warm and sunny days, characterized by a minimum temperature of 24°C (76°F) and an average of 28°C (83°F), creating an inviting atmosphere for outdoor activities. The temperature peaks at a sizzling 33°C (92°F), making it one of the hottest months of the year. This trend of rising temperatures continues from June, where lows remain steady and averages are similar, ensuring that the tropical spirit thrives during this summer month. With August following closely behind in temperature, July stands out as a time for sun-soaked beach days and vibrant outdoor festivities, perfectly embodying the essence of a summer getaway.

July Weather in Key Biscayne: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Key Biscayne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec707373777982838382807672
Data source: Temperature data for Key Biscayne 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.

July Precipitation in Key Biscayne

In July, Key Biscayne experiences a notable surge in precipitation, with 173 mm (6.8 in) of rain falling over an impressive 26 days. This trend marks a continuation of the wet season that began in May and June, where rainfall totals were also significant, reaching 161 mm (6.3 in) and 172 mm (6.8 in) respectively. The increased humidity and frequent showers contribute to a lush, vibrant landscape, though the high number of rainy days can be a challenge for outdoor activities. As July transitions into August, precipitation slightly intensifies, hinting at an ongoing pattern of summer storms typical for this coastal paradise.

July Precipitation Trends in Key Biscayne

The chart displays monthly precipitation patterns in Key Biscayne, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec345031631611721741812031579341
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Key Biscayne

In Key Biscayne, July ushers in a slight reprieve from the more oppressive humidity of summer, with levels averaging around 70%. After a gradual decline through late spring, where humidity dropped to a comfortable 69% in June, July marks a subtle uptick compared to the previous month. This trend showcases a typical midsummer pattern in the region, preparing residents and visitors alike for the warmer months ahead. As the year progresses, humidity levels begin to climb again, peaking in the early winter months of November and December, reminding us of South Florida's tropical climate. The shifting humidity patterns not only influence the weather but also dictate the rhythm of life on this picturesque island.

July Average Humidity in Key Biscayne

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

July UV Index in Key Biscayne

In July, Key Biscayne experiences a UV Index of 12, categorizing it as extreme with a burn time of just 10 minutes. This reflects a continuation of the trend seen in the preceding months, where the UV Index peaks at 13 in June. As summer progresses, residents and visitors should remain vigilant; both June and July showcase some of the highest UV levels of the year. Interestingly, while the UV Index in July slightly decreases from the previous month, it still remains within the extreme range, similar to May and April. As a result, it's crucial to take proper sun protection measures during this time. For more detailed information on the UV Index fluctuations throughout the year, visit Key Biscayne UV Index.

Maximum UV Index Levels in Key Biscayne for July

The chart shows the monthly maximum UV Index (UVI) for Key Biscayne in July, 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.
JanFebMarAprMayJunJulAugSepOctNovDec69101212131212111086
Data source: Key Biscayne July 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.

July Sunshine in Key Biscayne

July in Key Biscayne shines bright with an impressive 344 hours of sunshine, marking it as one of the sunniest months of the year. The trend of increasing sunlight hours from January to July showcases the vibrant warmth of summer, peaking in this central month. Following a gradual climb from 226 hours in January to June's 312 hours, July stands out as the culmination of this sunny ascent. As summer transitions into late summer, August maintains close to this peak with 340 hours, ensuring that the golden glow persists into the following month. With this trend, Key Biscayne remains a perfect tropical escape, promising long, sun-soaked days for beach lovers and travelers alike.

Monthly Sunshine Duration in Key Biscayne: July Highlighted

The July sunshine duration represents the total number of hours Key Biscayne experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec226h281h327h336h325h312h344h340h314h305h280h290h
Data source: Key Biscayne July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Key Biscayne During July

In Key Biscayne, the likelihood of sunny weather experiences a marked dip during the summer months, with July averaging only 19% sunshine. This stands in stark contrast to the sunny conditions seen earlier in the year, where February boasts a promising 60% chance of sun. Following a gradual decline from late spring into early summer, the weather in July takes a particularly cloudy turn, making it one of the less favorable months for sunshine. Interestingly, as the year progresses, the chance of sunny days begins to rise again in the fall, suggesting that those seeking brighter days might want to plan their visits outside of midsummer.

Percentage of Sunny Days in July in Key Biscayne

The chart illustrates the percentage of sunny days in Key Biscayne throughout the year, with July 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 Biscayne experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%60%55%55%48%15%19%24%31%44%40%64%
Data source: Key Biscayne July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Key Biscayne in July

In Key Biscayne, July enjoys a generous 13 hours of daylight, reflecting a trend of abundant sunlight set earlier in the summer. This peak in daylight aligns harmoniously with the warmer months, providing ample opportunity for outdoor activities and beachside relaxation. As the year progresses, daylight gradually wanes, decreasing to 12 hours in August and continuing the descent into the fall months. This consistent pattern showcases a vibrant summer that gives way to shorter, softer days, allowing residents and visitors to savor the last lingering moments of sunshine before the cooler seasons arrive.

Average Daylight Hours in Key Biscayne for July

The chart illustrates the variation in daylight duration in Key Biscayne throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 43m11h 17m12h 1m12h 46m13h 23m13h 42m13h 32m12h 58m12h 15m11h 30m10h 52m10h 33m
Data source: Key Biscayne daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Key Biscayne

In July, Key Biscayne experiences its calmest winds of the year, with an average speed of 3.1 m/s (7 mph). This gentle breeze creates a serene atmosphere perfect for leisurely beach days and tranquil sunsets. Following the slightly breezier months of April and May, where winds averaged around 4.4 m/s (10 mph), July’s lull sets a contrasting tone. As summer peaks, we can observe a downward trend in wind speed that continues into August and notably drops in September, highlighting the transition into the quieter months of the year. Despite the decline, the soft July winds add a special charm to the coastal paradise, offering a perfect backdrop for relaxation and enjoyment of the sun-soaked shores.

Average July Wind Speed in Key Biscayne

The chart displays monthly wind speed patterns in Key Biscayne, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.94.94.94.44.63.93.1 m/s3.42.43.54.13.4
Data source: Key Biscayne July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Key Biscayne Compares to Other Months

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

Comparing the weather between July and January reveals a dramatic shift in conditions. July experiences much warmer temperatures, with minimums around 24°C (76°F) and maximums peaking at 33°C (92°F), making it a hot and humid month with an average of 28°C (83°F). In contrast, January has a cooler climate, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 28°C (83°F), and an average of 21°C (70°F). Additionally, January sees significantly less precipitation, totaling only 34 mm (1.3 in) over just 6 days, whereas July is much wetter with 173 mm (6.8 in) over 26 days. Despite the lower temperatures in January, the humidity remains relatively high at 81%, compared to 70% in July. For a more detailed look at January weather, check out Key Biscayne weather in January.

In comparing the weather between July and February, one can notice significant differences in temperature and precipitation. July features warmer temperatures with a minimum of 24°C (76°F) and an average of 28°C (83°F), peaking at 33°C (92°F), while February experiences much cooler conditions with a minimum of 10°C (51°F) and an average of 23°C (73°F), reaching a maximum of 28°C (83°F). Precipitation also varies greatly, as July sees 173 mm (6.8 in) over 26 days, whereas February has much less rainfall at 50 mm (2.0 in) over just 9 days. Additionally, February tends to have slightly higher humidity at 79% compared to July's 70%. For a detailed look at February's weather, you can visit Key Biscayne weather in February.

In comparing the weather patterns of July and March, July stands out with its significantly higher temperatures, featuring a minimum of 24°C (76°F) and an average of 28°C (83°F), peaking at 33°C (92°F). In contrast, March enjoys milder conditions, with minimum temperatures around 12°C (54°F) and an average of 23°C (73°F), reaching a maximum of 30°C (86°F). While July experiences considerable precipitation at 173 mm (6.8 in) over 26 days, March is relatively dry, with only 30 mm (1.2 in) spread over just 5 days. Furthermore, the humidity is slightly higher in March at 76% compared to July's 70%. For more details, you can check the Key Biscayne weather in March.

The weather in July is significantly warmer than in April, with average temperatures reaching 28°C (83°F) compared to April's 25°C (77°F). While July has higher maximum temperatures peaking at 33°C (92°F), April remains close with a maximum of 32°C (90°F). Precipitation also differs notably; July sees 173 mm (6.8 in) of rain over 26 days, whereas April experiences only 63 mm (2.5 in) of rain over 11 days. Humidity levels are similar, with July at 70% and April slightly higher at 73%. For more details about the weather conditions in April, you can visit Key Biscayne weather in April.

In comparing the weather between July and May, we observe that July tends to be warmer, with an average temperature of 28°C (83°F) compared to May's 26°C (79°F). While both months experience significant humidity, July records slightly lower humidity levels at 70%, compared to May's 71%. Precipitation is more frequent in July, with rain occurring on 26 days and totaling 173 mm (6.8 in), while May sees rainfall on 18 days, accumulating 161 mm (6.3 in). For a more detailed look at the weather during May, you can visit Key Biscayne weather in May.

In comparing the weather of July and June, we find that both months exhibit similar temperature ranges, with July experiencing a minimum of 24°C (76°F), an average of 28°C (83°F), and a maximum of 33°C (92°F), while June has slightly lower maximum temperatures, reaching 32°C (90°F). Precipitation levels are almost identical, with July recording 173 mm (6.8 in) over 26 days, compared to June's 172 mm (6.8 in) over 22 days. Additionally, humidity is marginally higher in July at 70% compared to June’s 69%. For a more detailed look at June's weather specifics, you can visit Key Biscayne weather in June.

In July, the weather features a minimum temperature of 24°C (76°F), an average of 28°C (83°F), and a maximum of 33°C (92°F), accompanied by substantial precipitation of 173 mm (6.8 in) over 26 days, with humidity averaging around 70%. In contrast, August sees slightly warmer conditions with a minimum temperature of 25°C (76°F) and a maximum of 32°C (90°F), while maintaining the same average of 28°C (83°F). Precipitation increases to 181 mm (7.1 in) over 25 rainfall days, resulting in a higher humidity level of 72%. For a detailed comparison, you can check out Key Biscayne weather in August.

In July, temperatures average around 28°C (83°F), with a minimum of 24°C (76°F) and a maximum of 33°C (92°F). This month experiences significant rainfall, with 173 mm (6.8 in) of precipitation spread over 26 days, leading to a humidity level of 70%. In contrast, September maintains similar temperature averages, with the minimum at 24°C (75°F), averaging 28°C (82°F), and peaking at 33°C (91°F). However, September sees a slightly higher precipitation level of 203 mm (8.0 in) over 22 days and increased humidity at 76%. For more details, check out Key Biscayne weather in September.

In July, temperatures soar with a minimum of 24°C (76°F) and an average of 28°C (83°F), peaking at a sizzling 33°C (92°F). Alongside the heat, July experiences significant rainfall, totaling 173 mm (6.8 in) over 26 days, while humidity remains relatively high at 70%. In contrast, October offers a more moderate climate with a minimum temperature of 15°C (59°F) and a comfortable average of 27°C (81°F), reaching a maximum of 30°C (87°F). Although October sees slightly less precipitation at 157 mm (6.2 in) over 22 days, the humidity does increase to 79%. For a more detailed overview, check out Key Biscayne weather in October.

In July, Key Biscayne experiences significantly warmer temperatures, with a minimum of 24°C (76°F) and an average of 28°C (83°F), peaking at 33°C (92°F). The month is also marked by higher rainfall, with 173 mm (6.8 in) spread over 26 days, and humidity levels at 70%. In contrast, November brings milder weather, featuring a minimum temperature of 12°C (54°F) and an average of 24°C (76°F), reaching a maximum of 30°C (86°F). The rainfall decreases to 93 mm (3.7 in) over just 14 days, while humidity rises slightly to 80%. For more detailed insights, check out Key Biscayne weather in November.

July and December present contrasting weather patterns in Key Biscayne. In July, temperatures are significantly warmer, with a minimum of 24°C (76°F) and an average of 28°C (83°F), reaching up to a maximum of 33°C (92°F). The month is quite wet, experiencing an average precipitation of 173 mm (6.8 in) over 26 rainy days, coupled with a humidity level of 70%. In contrast, December offers milder weather, with temperatures ranging from a minimum of 11°C (51°F) to an average of 22°C (72°F) and a maximum of 29°C (84°F). Precipitation is much lower in December, at just 41 mm (1.6 in) over 9 rainy days, and the humidity rises slightly to 81%. For more detailed insights, check out Key Biscayne weather in December.

Compare Key Biscayne's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Key Biscayne

As July rolls into Key Biscayne, visitors can expect warmer days compared to other months, with temperatures peaking at 33°C (92°F). While the heat is palpable, the high humidity creates a tropical atmosphere that can feel even more intense. This month also sees a significant uptick in precipitation, with rain falling on about 26 days, making it one of the wetter months of the year. Despite the occasional downpour, the lush surroundings and vibrant sunsets make July a unique time to experience the beauty of this coastal paradise. For a detailed look at what to expect throughout the year, check out Key Biscayne Climate.