Mosquito season in Beauregard Parish, LA: when it starts and ends

Mosquito months in Beauregard Parish

In a normal year mosquito season in Beauregard Parish, LA starts around February 12 and ends around January 13, about 48 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 Beauregard Parish, and when

• Start tipping out standing water weekly by January 29.
• Book any yard treatment for mid February, ahead of the August peak.
• Repellent can go away after January 13.
• 2 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.

Beauregard Parish against the rest of LA

Beauregard Parish has the 14th longest season of 64 LA counties, at 335 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 67.2°F.

• St. James Parish: January 28 to January 1 (338 days, 2 WNV)
• St. John the Baptist Parish: January 28 to January 1 (338 days, 2 WNV)
• Washington Parish: February 11 to January 11 (334 days, 10 WNV)
• Pointe Coupee Parish: January 31 to December 29 (332 days, 1 WNV)

West Nile in Beauregard Parish

From 1999 to 2025, CDC ArboNET counted 9 human West Nile cases in Beauregard Parish (7 neuroinvasive) across 7 years. The worst was 2012 with 3; the latest was 2024.

Background: where mosquitoes never stop; how the dates are worked out.