Mosquito season in Matagorda County, TX: when it starts and ends
Mosquito months in Matagorda County
In a normal year mosquito season in Matagorda County, TX starts around January 22 and ends around January 1, about 49 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Matagorda County, and when
- Start tipping out standing water weekly by January 8.
- Book any yard treatment for late January, ahead of the August peak.
- Repellent can go away after January 1.
- 1 West Nile case since 2016 (last 2016): you should use repellent at dusk May to October, more so if over 60.
Matagorda County against the rest of TX
Matagorda County has the 16th longest season of 254 TX counties, at 344 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 69.3°F.
- Victoria County: January 20 to January 1 (346 days, 1 WNV)
- Jackson County: January 21 to January 1 (345 days, 0 WNV)
- Calhoun County: January 27 to January 4 (342 days, 0 WNV)
- Zavala County: January 20 to December 26 (340 days, 2 WNV)
West Nile in Matagorda County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Matagorda County (1 neuroinvasive) across 2 years. The worst was 2016 with 1; the latest was 2016.
Background: where mosquitoes never stop; how the dates are worked out.