Miami Weather in August
United States · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Miami sees average temperatures ranging from a low of 25.9°C (78.6°F) to a high of 31.3°C (88.3°F), with a mean of 28.4°C (83.1°F). Compared to the annual average of 24.9°C (76.8°F), this month is 3.5°C warmer than the yearly norm. This is the hottest month of the year, reaching 31.3°C (88.3°F) on average. Precipitation averages 145.1mm, making it approximately 7.0mm wetter than the monthly average of 139.0mm. The city receives an average of 11.2 hours of sunshine per day during August, with relative humidity averaging 77.4%. Wind speeds reach an average maximum of 18.4 km/h. For travelers, this month offers a hottest month of the year experience in Miami, with wetter-than-average conditions compared to the rest of the year.
Miami's data reveals a city that lives between two climate extremes: gorgeous winters and punishing summers. January averages 20°C with 50mm of rain — practically perfect. August averages 29°C with 200mm and 80% humidity. I tracked hurricane season data and September stands out: highest rain (240mm), highest storm risk. The numbers say December-April is the optimal window: 22-25°C, low rain, manageable UV. May-June is statistically underrated — 27°C before peak humidity. July-August is for AC-to-AC dashes. The water stays bathtub-warm 8 months a year, which the data confirms.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 28.2°C (82.8°F) | 28.4°C (83.1°F) | 27.3°C (81.1°F) |
| Rainfall | 136.6mm | 145.1mm | 231.0mm |
| Sunshine | 11.3 hrs | 11.2 hrs | 9.7 hrs |
| Humidity | 78.3% | 77.4% | 81.0% |
| Wind | 17.5 km/h | 18.4 km/h | 17.4 km/h |
| Rainy Days | 29.4 | 30.0 | 27.8 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Miami in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Miami in August?
The average temperature in Miami during August ranges from 25.9°C (78.6°F) to 31.3°C (88.3°F), with a mean of 28.4°C (83.1°F).
How much does it rain in Miami in August?
Miami receives an average of 145.1mm of precipitation in August, spread across approximately 30.0 rainy days.
What should I pack for Miami in August?
Based on August weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 145.1mm of precipitation.
Is August a good time to visit Miami?
August is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Miami
Cities with Similar August Climate (Tropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 25.76°, -80.19°. Timezone: America/New_York. Last updated: 2026-07-30.