Mosquito season in Seminole County, FL: when it starts and ends
Mosquito months in Seminole County
In a normal year mosquito season in Seminole County, FL starts around January 14 and ends around January 11, about 52 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Seminole County, and when
- Start tipping out standing water weekly by December 31.
- Book any yard treatment for mid January, ahead of the August peak.
- Repellent can go away after January 11.
- 1 West Nile case since 2016 (last 2024): you should use repellent at dusk April to October, more so if over 60.
Seminole County against the rest of FL
Seminole County has the 15th longest season of 67 FL counties, at 362 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 72.7°F.
- Polk County: all year (365 days, 0 WNV)
- St. Lucie County: all year (365 days, 0 WNV)
- Flagler County: January 19 to January 16 (362 days, 0 WNV)
- Palm Beach County: January 25 to January 22 (362 days, 5 WNV)
West Nile in Seminole County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Seminole County (1 neuroinvasive) across 2 years. The worst was 2003 with 2; the latest was 2024.
See how the dates are worked out, and where mosquitoes never stop.