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Monthly climate in Port Lavaca, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Port Lavaca features a humid subtropical climate (Cfa).Temperatures typically range between 14 °C (57 °F) and 29 °C (85 °F) through the year, but rarely can drop to -8 °C (18 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 1047 mm (41.2 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Port Lavaca enjoys an average of 3245 hours of sunshine throughout the year, and daylight varies from 10 hours 21 minutes to 13 hours 54 minutes per day.

Monthly average temperatures in Port Lavaca, Texas, United States §

The warmest months in Port Lavaca are June, July and August, with daily mean temperatures ranging from 28 to 29 °C (83 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 16 °C (57 - 60 °F) throughout the day. On average each year, Port Lavaca experiences 203 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Port Lavaca, Texas, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 29°C
(84°F)		 30°C
(86°F)		 31°C
(87°F)		 33°C
(92°F)		 33°C
(91°F)		 36°C
(97°F)		 35°C
(96°F)		 37°C
(98°F)		 35°C
(95°F)		 32°C
(91°F)		 30°C
(86°F)		 27°C
(81°F)
Mean maximum 26°C
(79°F)		 26°C
(79°F)		 29°C
(84°F)		 31°C
(88°F)		 32°C
(89°F)		 34°C
(93°F)		 34°C
(94°F)		 35°C
(95°F)		 34°C
(93°F)		 32°C
(90°F)		 29°C
(84°F)		 26°C
(79°F)
Average high 19°C
(66°F)		 19°C
(67°F)		 23°C
(74°F)		 26°C
(79°F)		 29°C
(85°F)		 31°C
(88°F)		 32°C
(90°F)		 33°C
(91°F)		 31°C
(88°F)		 28°C
(82°F)		 23°C
(73°F)		 20°C
(69°F)
Daily mean 14°C
(57°F)		 15°C
(60°F)		 20°C
(67°F)		 22°C
(72°F)		 26°C
(79°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 27°C
(81°F)		 23°C
(74°F)		 18°C
(65°F)		 16°C
(60°F)
Average low 10°C
(50°F)		 11°C
(53°F)		 16°C
(61°F)		 18°C
(65°F)		 23°C
(73°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 24°C
(76°F)		 19°C
(67°F)		 14°C
(57°F)		 11°C
(52°F)
Mean minimum -0°C
(32°F)		 1°C
(34°F)		 6°C
(43°F)		 10°C
(49°F)		 17°C
(62°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 18°C
(65°F)		 8°C
(47°F)		 5°C
(41°F)		 3°C
(37°F)
Minimum -5°C
(23°F)		 -8°C
(18°F)		 -0°C
(32°F)		 6°C
(42°F)		 12°C
(55°F)		 21°C
(69°F)		 21°C
(70°F)		 22°C
(71°F)		 15°C
(58°F)		 4°C
(40°F)		 -0°C
(32°F)		 1°C
(33°F)

Compare climate in Port Lavaca with other places

Compare temperature, precipitation, sunshine, UV index in Port Lavaca, Texas, United States with other places around the world.

Monthly average precipitation in Port Lavaca, Texas, United States §

Port Lavaca usually has the most precipitation in May, June and September, with an average of 15 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in Port Lavaca are January, February and March. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Lavaca, Texas, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 52 (2.0) 52 (2.1) 57 (2.3) 59 (2.3) 114 (4.5) 141 (5.6) 104 (4.1) 112 (4.4) 148 (5.8) 81 (3.2) 61 (2.4) 64 (2.5)
Average precipitation days (≥ 1 mm) 5 8 9 9 12 15 13 15 18 11 8 6

Monthly sunshine hours in Port Lavaca, Texas, United States §

The sunniest months in Port Lavaca are June, July and August, when the sun shines an average of 10 hours 40 minutes a day.Least sunny months in Port Lavaca: January, February and December receive an average of 6 hours 34 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Lavaca, Texas, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 180 183 252 276 315 326 326 328 286 284 249 233
Mean daily daylight hours 10h 33m 11h 11m 12h 0m 12h 51m 13h 33m 13h 54m 13h 43m 13h 5m 12h 17m 11h 26m 10h 43m 10h 21m

Solar UV radiation in Port Lavaca, Texas, United States §

Port Lavaca experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Port Lavaca UV Index data.

Average daily maximum UV levels by month for Port Lavaca, Texas, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 5 8 9 11 11 12 12 12 11 9 7 5