August weather in Port Lavaca, TX
The average temperature in Port Lavaca in August is 85.3°F (78.2°F–92.4°F). Average precipitation: 3.42 inches.
August is a summer month in Port Lavaca, and is warmer than the annual average of 71.3°F. Daily temperatures swing about 14.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 2m. For travel, August is hot.
Avg High
92.4°F
Avg Low
78.2°F
Precipitation
3.42 in
Daylight
13h 2m
August records in Port Lavaca
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (1973) | 70.0°F (1971) | 1.43 in (1995) |
| August 2 | 98.1°F (1977) | 69.1°F (1966) | 0.77 in (1971) |
| August 3 | 98.1°F (2025) | 69.1°F (1971) | 2.67 in (1971) |
| August 4 | 99.0°F (1985) | 69.1°F (1974) | 4.03 in (1984) |
| August 5 | 98.1°F (1964) | 69.1°F (1971) | 1.85 in (1994) |
| August 6 | 99.0°F (1985) | 64.0°F (1974) | 1.92 in (1971) |
| August 7 | 99.0°F (1985) | 64.9°F (1974) | 1.38 in (2019) |
| August 8 | 100.0°F (1959) | 66.9°F (1974) | 3.14 in (1964) |
| August 9 | 102.9°F (1962) | 68.0°F (1989) | 2.54 in (1980) |
| August 10 | 102.0°F (1962) | 64.9°F (1989) | 2.64 in (1961) |
| August 11 | 100.0°F (1970) | 66.9°F (1989) | 1.30 in (1967) |
| August 12 | 99.0°F (1962) | 66.9°F (1967) | 0.87 in (1973) |
| August 13 | 102.9°F (1962) | 60.1°F (1967) | 1.02 in (1995) |
| August 14 | 98.1°F (2013) | 66.0°F (1967) | 2.50 in (1973) |
| August 15 | 99.0°F (2013) | 68.0°F (2004) | 1.10 in (2002) |
| August 16 | 104.0°F (2023) | 68.0°F (1972) | 2.69 in (2016) |
| August 17 | 98.1°F (1982) | 66.0°F (1992) | 0.50 in (1976) |
| August 18 | 102.0°F (1962) | 64.9°F (1992) | 2.77 in (1989) |
| August 19 | 106.0°F (1986) | 70.0°F (1967) | 2.15 in (2008) |
| August 20 | 99.0°F (2020) | 69.1°F (1976) | 0.73 in (1969) |
| August 21 | 100.0°F (2023) | 68.0°F (1976) | 2.44 in (2015) |
| August 22 | 98.1°F (1985) | 64.0°F (2000) | 2.07 in (1996) |
| August 23 | 97.0°F (2022) | 66.0°F (1974) | 2.06 in (1967) |
| August 24 | 100.9°F (1988) | 64.9°F (1961) | 2.00 in (1959) |
| August 25 | 100.0°F (2023) | 66.0°F (1961) | 3.42 in (1959) |
| August 26 | 99.0°F (1985) | 66.0°F (1961) | 9.26 in (2017) |
| August 27 | 102.0°F (2011) | 66.0°F (1961) | 3.61 in (2014) |
| August 28 | 105.1°F (2011) | 68.0°F (1961) | 0.91 in (1981) |
| August 29 | 105.1°F (2011) | 64.0°F (1968) | 2.57 in (2001) |
| August 30 | 100.0°F (2023) | 69.1°F (1968) | 2.09 in (2016) |
| August 31 | 100.9°F (2023) | 70.0°F (1971) | 2.42 in (2001) |