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.