Mosquito season in Martin County, FL: when it starts and ends

Mosquito months in Martin County

Mosquitoes in Martin County, FL can be active in any month. The worst stretch is April to November.

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 Martin County, and when

• No off-season here: tip out standing water every week, all year.
• A yard treatment matters most April to November.
• 2 West Nile cases since 2016 (last 2024): you should use repellent at dusk April to November, more so if over 60.

Martin County against the rest of FL

Martin County has the 8th longest season of 67 FL counties, at 365 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 74.4°F.

• Lee County: all year (365 days, 1 WNV)
• Manatee County: all year (365 days, 1 WNV)
• Miami-Dade County: all year (365 days, 29 WNV)
• Monroe County: all year (365 days, 0 WNV)

West Nile in Martin County

From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Martin County (2 neuroinvasive) across 2 years. The worst was 2024 with 1; the latest was 2024.

See how the dates are worked out, and where mosquitoes never stop.