Louisville weather in August
August in Louisville: hot, rainy, with very humid — a great time to visit.
#6 of 12 months in Louisville · #578 of 897 destinations to visit in August · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Louisville in August
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Louisville climate normals — August
| Daytime high | 30°C / 85°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Rainfall | 108 mm / 4.3 in | 🌧 rainy |
| Rainy days | 12 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 20°C / 67°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 13.6 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 59 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Louisville in August — FAQ
- Is August a good time to visit Louisville?
- August in Louisville: hot, rainy, with very humid — a great time to visit. It ranks #6 of 12 months for Louisville on SeasonMap's comfort score (75/100).
- What is the weather like in Louisville in August?
- In August, Louisville averages a daily high of 29.6°C and a low of 20.5°C, with about 108 mm of rain over roughly 12.4 rainy days.
- What is the air quality in Louisville in August?
- Louisville has a mean US Air Quality Index of about 59 in August.