Lafayette, LA weather in August
Lafayette is hot and oppressively humid in August, with frequent rain: highs average 92°F and nights drop to about 75°F. Expect about 12 wet days. This is the peak of the warm season in Lafayette. Midday heat is the main thing to plan around.
- Normal high
- 92°F
- Normal low
- 75°F
- Wet days
- 12
- 6.3 in total
- Muggy days
- 30
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 92°F | 91°F |
| Normal low | 75°F | 74°F |
| Chance of a wet day | 41% | 38% |
| Sunrise / sunset | 6:26 am / 8:02 pm | 6:44 am / 7:32 pm |
| Daylight | 13.6 h | 12.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical August day
- 6 am76°Fdew point 73°F
- 9 am84°Fdew point 75°F
- Noon89°Fdew point 73°F
- 3 pm88°Fdew point 72°F
- 6 pm85°Fdew point 73°F
- 9 pm79°Fdew point 74°F
NOAA hourly normals (local standard time) from Lafayette Rgnl Airport (2 mi away); average wind 5 mph; clear or few clouds in 62% of daytime hours, mostly cloudy or overcast in 22%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more25 of 31
- Muggy daysdaily mean dew point 65°F or more30 of 31
- Wet daysat least 0.01 in of rain or melted snow12 of 31
- Notable rainat least 0.10 in8 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 6.3 in; a dry August brings about 3.3 in and a wet one about 8.4 in (25th and 75th percentiles). About 4 days bring half an inch or more, and about 2 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202011: average high 97°F
- Coolest August2001: average high 88°F
- Wettest August2016: 24.7 in
- Driest August1999: 1.2 in
- Highest reading104°F (August 30, 2000)
- Lowest reading58°F (August 15, 2004)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 92°F | 92°F | 89°F |
| Normal low | 75°F | 75°F | 70°F |
| Wet days | 14 | 12 | 9 |
| Comfortable days | 0 | 0 | 1 |
| Daylight | 13.9 h | 13.2 h | 12.3 h |
Highs change by 0°F from July and -3°F into September.
Nearby alternatives in August
- Drier: Galveston, TX178 mi · high 92°F · 9 wet days
How Lafayette ranks in August
- Normal high84th warmest of 378 cities; 3rd of 5 in Louisiana
- Wet days324th driest of 378
- Comfortable days305th most of 341
What to pack for Lafayette in August
- Light, breathable clothing – highs near 92°F and about 30 muggy days
- A rain jacket or umbrella – rain on about 12 days
Heating and cooling
August has 0 heating degree days and 573 cooling degree days (base 65°F), 13% of the year's total heating and cooling demand.
Questions
How hot is Lafayette in August?
The normal high is 92°F and the normal low is 75°F. From 1991 to 2020 the hottest August reading was 104°F (August 30, 2000).
Does it rain a lot in Lafayette in August?
About 12 days in August have at least 0.01 in of precipitation, and the normal total is 6.3 in. The wettest August in 1991-2020 was in 2016 (24.7 in); the driest was in 1999 (1.2 in).
Is August a good time to visit Lafayette?
August ranks 12th of 12 months on our comfort score for Lafayette (33 out of 100). It has almost no comfortable days and about 25 days at 90°F or hotter. The best months are March, April and November.
Where the numbers come from
- Temperature, rain, frost dates, humidity and wind by hour and cloud cover: Lafayette Rgnl Airport (USW00013976), 2.3 mi SE of the city center, 38 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Lafayette (USC00165021), 2.7 mi W of the city center, 25 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Lafayette Regional Airport (722405-13976), 2.5 mi SE of the city center, 35 ft . Hourly observations, 1991-2020.