Key Biscayne Weather in August
Key Biscayne in August sees very high temperatures, with highs around 32°C (90°F) and overnight lows of 26°C (79°F). Rainfall is at its peak this month, around 186 mm (7.3 in) on average, so waterproofs are essential.
Rainfall in Key Biscayne in August
As part of the rainy season, Key Biscayne sees around 24 days of rain in August, with an average of 186 mm (7.3 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Key Biscayne in August
Expect highs of 32°C (90°F) in Key Biscayne in August, with nights dropping to around 26°C (79°F). Mornings and evenings are often more comfortable than the peak afternoon hours. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help. Keep in mind that temperatures can exceed these averages. Dress for the heat and stay hydrated, especially during peak sun hours.
Sunshine in Key Biscayne in August
The days are predominantly sunny, with an estimated total of around 263 hours of sunshine. Rain is often only seen in the afternoon or evening, leaving clear skies for most of the day. This results in rainy months that still feel bright and are suitable for travel.
Wind Speed in Key Biscayne in August
In August, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.
Average water temperature in August
The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.August in Key Biscayne has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key Biscayne's climate page.
Key Biscayne Temperature in August
Min Temperature
26°C (79°F)
Max Temperature
32°C (90°F)
Water Temperature
28°C (82°F) *
Chance of Rain
78%
Precipitation
186 mm (7.3 in)
Rainy days
24 days
Humidity
76% *
Windspeed
4 m/s (8 knots) *
Sunshine
263 hours *
Percentage Sunshine
71% *
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
perfect weather
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What to Wear in Key Biscayne in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Key Biscayne in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key Biscayne's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Key Biscayne climate overview or explore weather in the United States of America.
