Mosquito season in Vermilion Parish, LA: when it starts and ends
Mosquito months in Vermilion Parish
In a normal year mosquito season in Vermilion Parish, LA starts around January 29 and ends around December 25, about 47 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Vermilion Parish, and when
- Start tipping out standing water weekly by January 15.
- Book any yard treatment for late January, ahead of the August peak.
- Repellent can go away after December 25.
- 1 West Nile case since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Vermilion Parish against the rest of LA
Vermilion Parish has the 18th longest season of 64 LA counties, at 330 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 67.4°F.
- Pointe Coupee Parish: January 31 to December 29 (332 days, 1 WNV)
- Jefferson Davis Parish: January 31 to December 28 (331 days, 3 WNV)
- Ascension Parish: February 1 to December 28 (330 days, 19 WNV)
- Assumption Parish: February 1 to December 28 (330 days, 3 WNV)
West Nile in Vermilion Parish
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Vermilion Parish (3 neuroinvasive) across 3 years. The worst was 2024 with 1; the latest was 2024.
See how the dates are worked out, and where mosquitoes never stop.