Mosquito season in Nueces County, TX: when it starts and ends

Mosquito months in Nueces County

In a normal year mosquito season in Nueces County, TX starts around January 11 and ends around January 1, about 51 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Nueces County, and when

• Start tipping out standing water weekly by December 28.
• Book any yard treatment for mid January, ahead of the August peak.
• Repellent can go away after January 1.
• 14 West Nile cases since 2016: you should wear EPA-registered repellent at dusk April to October, and check TX spray notices.

Nueces County against the rest of TX

Nueces County has the 8th longest season of 254 TX counties, at 355 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 72.6°F.

• Aransas County: January 8 to January 4 (361 days, 0 WNV)
• Jim Wells County: January 15 to January 6 (356 days, 1 WNV)
• San Patricio County: January 12 to January 1 (354 days, 2 WNV)
• Brazoria County: January 19 to January 7 (353 days, 11 WNV)

West Nile in Nueces County

From 1999 to 2025, CDC ArboNET counted 64 human West Nile cases in Nueces County (40 neuroinvasive) across 11 years. The worst was 2006 with 21; the latest was 2024.

More: how the dates are worked out · where mosquitoes never stop.