Mosquito season in New Hanover County, NC: when it starts and ends
Mosquito months in New Hanover County
In a normal year mosquito season in New Hanover County, NC starts around March 3 and ends around November 28, about 39 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in New Hanover County, and when
- Start tipping out standing water weekly by February 17.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 28.
- 6 West Nile cases since 2016 (last 2023): you should use repellent at dusk May to September, more so if over 60.
New Hanover County against the rest of NC
New Hanover County has the 4th longest season of 100 NC counties, at 270 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 64°F.
- Beaufort County: March 2 to December 4 (277 days, 3 WNV)
- Wayne County: March 1 to November 30 (274 days, 0 WNV)
- Brunswick County: March 7 to December 1 (269 days, 1 WNV)
- Scotland County: March 5 to November 27 (267 days, 0 WNV)
West Nile in New Hanover County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in New Hanover County (6 neuroinvasive) across 3 years. The worst was 2023 with 3; the latest was 2023.
More: how the dates are worked out · reading the West Nile counts.