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

Mosquito months in Camden County

In a normal year mosquito season in Camden County, NJ starts around April 6 and ends around November 3, about 30 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 Camden County, and when

• Start tipping out standing water weekly by March 23.
• Book any yard treatment for early April, ahead of the July peak.
• Repellent can go away after November 3.
• 22 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to August, and check NJ spray notices.

Camden County against the rest of NJ

Camden County has the 5th longest season of 21 NJ counties, at 211 days against 217 in Cape May County and 184 in Sussex County. Its mean temperature is 54.9°F.

• Atlantic County: April 7 to November 6 (213 days, 8 WNV)
• Hudson County: April 7 to November 5 (212 days, 6 WNV)
• Gloucester County: April 7 to November 3 (211 days, 6 WNV)
• Union County: April 7 to November 3 (210 days, 10 WNV)

West Nile in Camden County

From 1999 to 2025, CDC ArboNET counted 51 human West Nile cases in Camden County (33 neuroinvasive) across 17 years. The worst was 2010 with 7; the latest was 2025.

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