Mosquito season in Chesapeake city, VA: when it starts and ends
Mosquito months in Chesapeake city
In a normal year mosquito season in Chesapeake city, VA starts around March 17 and ends around November 22, about 36 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Chesapeake city, and when
- Start tipping out standing water weekly by March 3.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 22.
- 4 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Chesapeake city against the rest of VA
Chesapeake city has the 3rd longest season of 133 VA counties, at 250 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 60.4°F.
- Norfolk city: March 15 to November 26 (257 days, 7 WNV)
- Portsmouth city: March 15 to November 25 (255 days, 0 WNV)
- Hampton city: March 17 to November 22 (250 days, 3 WNV)
- Virginia Beach city: March 18 to November 23 (250 days, 3 WNV)
West Nile in Chesapeake city
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Chesapeake city (3 neuroinvasive) across 4 years. The worst was 2018 with 2; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.