Mosquito season in Cape May County, NJ: when it starts and ends

Mosquito months in Cape May County

In a normal year mosquito season in Cape May County, NJ starts around April 5 and ends around November 8, about 31 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 Cape May County, and when

• Start tipping out standing water weekly by March 22.
• Book any yard treatment for early April, ahead of the July peak.
• Repellent can go away after November 8.
• 4 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to August, more so if over 60.

Cape May County against the rest of NJ

Cape May County has the 1st longest season of 21 NJ counties, at 217 days against 217 in Cape May County and 184 in Sussex County. Its mean temperature is 55.8°F.

• Salem County: April 4 to November 5 (215 days, 1 WNV)
• Atlantic County: April 7 to November 6 (213 days, 8 WNV)

West Nile in Cape May County

From 1999 to 2025, CDC ArboNET counted 9 human West Nile cases in Cape May County (7 neuroinvasive) across 7 years. The worst was 2018 with 2; the latest was 2024.

See how the dates are worked out, and reading the West Nile counts.