Mosquito season in Dukes County, MA: when it starts and ends
Mosquito months in Dukes County
In a normal year mosquito season in Dukes County, MA starts around April 27 and ends around October 25, about 26 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Dukes County, and when
- Start tipping out standing water weekly by April 13.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 25.
- No West Nile cases since 2016, so bites in Dukes County are a nuisance; check window screens.
Dukes County against the rest of MA
Dukes County has the 8th longest season of 14 MA counties, at 181 days against 194 in Plymouth County and 163 in Berkshire County. Its mean temperature is 50.9°F.
- Barnstable County: April 28 to October 29 (184 days, 7 WNV)
- Hampden County: April 21 to October 19 (181 days, 7 WNV)
- Middlesex County: April 21 to October 18 (180 days, 65 WNV)
- Hampshire County: April 24 to October 16 (175 days, 2 WNV)
West Nile in Dukes County
CDC ArboNET lists no human West Nile cases for Dukes County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 10 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.