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Weather & Climate in Port Lavaca, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Port Lavaca has a warm climate with an average annual temperature of 71°F (22°C). Winters average 55°F in January while summers reach 85°F in July. The area gets 330 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 41.4 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 18 feet.
Temperature
55°F Jan (13°C)
85°F Jul (29°C)
| Annual Average | 71.3°F |
| 32% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 85°F (29°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 18 ft (5 m) |
| Area | 10.2 sq mi (26.3 km²) |
| Population Density | 1,124/sq mi |
| Coordinates | 28.6180°N, 96.6283°W |
| Timezone | America/Chicago |
| County | Calhoun County County |
| Nearest Airport | Victoria Regional (VCT) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 66.3 / 100 |
| Social Vulnerability | 63.2 / 100 |
| Community Resilience | 73.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
158 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Oct 20, 2011 | 14 km SSW of Falls City, Texas | M4.8 | 144 km | 5 km |
| Jan 30, 2025 | 18 km ENE of Falls City, Texas | M4.6 | 128 km | 7 km |
| Feb 17, 2024 | 3 km SSW of Falls City, Texas | M4.5 | 141 km | 7 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M4.3 | 141 km | 8 km |
| Apr 9, 1993 | 21 km NW of Pawnee, Texas | M4.1 | 147 km | 5 km |
| Sep 14, 2023 | 16 km ENE of Falls City, Texas | M4.1 | 130 km | 8 km |
| May 1, 2018 | 4 km SSE of Falls City, Texas | M4.0 | 139 km | 5 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M3.9 | 141 km | 8 km |
| Apr 7, 2008 | 7 km SSW of Falls City, Texas | M3.9 | 141 km | 5 km |
| Feb 22, 2024 | 3 km E of Falls City, Texas | M3.9 | 138 km | 8 km |
| Feb 17, 2024 | 2 km S of Falls City, Texas | M3.7 | 141 km | 8 km |
| Feb 12, 2024 | 3 km S of Falls City, Texas | M3.7 | 141 km | 7 km |
| Jun 16, 2019 | 5 km SE of Falls City, Texas | M3.6 | 137 km | 5 km |
| Jan 6, 2018 | 17 km SW of Falls City, Texas | M3.6 | 148 km | 5 km |
| Jul 20, 1991 | 8 km SSW of Falls City, Texas | M3.6 | 142 km | 10 km |
| Feb 23, 2024 | 2 km ESE of Falls City, Texas | M3.5 | 139 km | 8 km |
| Jan 31, 2025 | 19 km ENE of Falls City, Texas | M3.5 | 128 km | 7 km |
| May 2, 2024 | 2 km E of Falls City, Texas | M3.5 | 138 km | 7 km |
| Feb 9, 2024 | 3 km S of Falls City, Texas | M3.4 | 140 km | 6 km |
| Feb 19, 2024 | 0 km ENE of Falls City, Texas | M3.4 | 141 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
15 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Beryl | Category 1 | 92 mph | 61 km |
| 2021 | Nicholas | Category 1 | 75 mph | 80 km |
| 2020 | Delta | Category 3 | 121 mph | 283 km |
| 2020 | Hanna | Category 1 | 92 mph | 180 km |
| 2017 | Harvey | Category 4 | 132 mph | 57 km |
| 2008 | Dolly | Category 2 | 98 mph | 253 km |
| 2008 | Ike | Category 2 | 109 mph | 202 km |
| 2007 | Humberto | Category 1 | 92 mph | 208 km |
| 2003 | Claudette | Category 1 | 92 mph | 27 km |
| 1999 | Bret | Category 4 | 144 mph | 206 km |
| 1989 | Chantal | Category 1 | 81 mph | 243 km |
| 1989 | Jerry | Category 1 | 86 mph | 167 km |
| 1986 | Bonnie | Category 1 | 86 mph | 260 km |
| 1983 | Alicia | Category 3 | 115 mph | 156 km |
| 1980 | Allen | Category 3 | 115 mph | 258 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
336 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 5 fatalities, 103 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Dec 24, 1975 | EF3 | 46 km | 1.0 mi | 0 |
| Apr 11, 1969 | EF3 | 98 km | 2.0 mi | 0 |
| Nov 5, 1968 | EF3 | 42 km | 14.4 mi | 0 |
| Sep 20, 1967 | EF3 | 95 km | 2.0 mi | 0 |
| Sep 20, 1967 | EF3 | 41 km | 1.0 mi | 4 |
| Sep 20, 1967 | EF3 | 51 km | 0.1 mi | 0 |
| Sep 20, 1967 | EF3 | 74 km | 1.5 mi | 0 |
| Sep 20, 1967 | EF3 | 92 km | 4.3 mi | 0 |
| Mar 28, 1966 | EF3 | 97 km | 9.3 mi | 0 |
| Feb 9, 1966 | EF3 | 39 km | 2.0 mi | 0 |
| Nov 8, 1963 | EF3 | 92 km | 1.0 mi | 0 |
| Oct 22, 1954 | EF3 | 94 km | 20.5 mi | 0 |
| Jun 2, 2010 | EF2 | 80 km | 3.8 mi | 0 |
| Mar 31, 2007 | EF2 | 89 km | 0.4 mi | 0 |
| May 13, 1994 | EF2 | 86 km | 0.2 mi | 0 |
| Apr 7, 1993 | EF2 | 95 km | 0.5 mi | 0 |
| Oct 29, 1972 | EF2 | 14 km | 10.8 mi | 0 |
| May 7, 1972 | EF2 | 1 km | 0.1 mi | 0 |
| Mar 20, 1972 | EF2 | 95 km | 4.5 mi | 0 |
| Mar 20, 1972 | EF2 | 96 km | 0.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: MATAGORDA B5 (7,817 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | MATAGORDA B5 | 7,817 | 37 km |
| 1988 | UNNAMED | 6,236 | 49 km |
| 1999 | UNNAMED | 4,966 | 50 km |
| 2008 | UNNAMED | 4,589 | 60 km |
| 2001 | SAVANNAH S | 3,866 | 45 km |
| 1996 | UNNAMED | 3,320 | 54 km |
| 2006 | UNNAMED | 3,162 | 38 km |
| 2018 | TXMAR-FY18-RX-MATAGORDA ISLAND WUI | 3,024 | 52 km |
| 2019 | TXARR-FY19-RX-MATAGORDA G5 | 2,924 | 61 km |
| 2009 | 2009 MI A 5 | 2,844 | 54 km |
| 2020 | T-10 UNIT | 2,821 | 53 km |
| 2016 | MATAGORDA ISLAND WUI FY 2016 | 2,794 | 61 km |
| 2019 | TXARR-FY19-RX-TATTON SOUTH | 2,641 | 48 km |
| 2008 | 2009 MI B 7 | 2,608 | 44 km |
| 1985 | UNIT 32 | 2,553 | 56 km |
| 2007 | UNNAMED | 2,537 | 36 km |
| 2009 | 2009 C 10 | 2,504 | 57 km |
| 1999 | UNNAMED | 2,483 | 49 km |
| 2006 | UNNAMED | 2,468 | 53 km |
| 2008 | UNNAMED | 2,462 | 49 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 2.8 in | Coldest |
| February | 58°F (15°C) | 2.5 in | |
| March | 65°F (18°C) | 1.7 in | Driest |
| April | 71°F (22°C) | 2.4 in | |
| May | 77°F (25°C) | 4.4 in | |
| June | 82°F (28°C) | 4.5 in | |
| July | 85°F (29°C) | 3.7 in | Warmest |
| August | 84°F (29°C) | 3.2 in | |
| September | 81°F (27°C) | 6.3 in | Wettest |
| October | 73°F (23°C) | 4.2 in | |
| November | 64°F (18°C) | 3.1 in | |
| December | 57°F (14°C) | 2.4 in |
Port Lavaca has a seasonal temperature swing of 30°F / from 55°F in January to 85°F in July. Total annual precipitation is 41.2 inches, with September being the wettest month (6.3") and March the driest (1.7").