Mosquito season in Kodiak Island Borough, AK: when it starts and ends

Mosquito months in Kodiak Island Borough

In a normal year mosquito season in Kodiak Island Borough, AK starts around June 16 and ends around September 9, about 12 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 Kodiak Island Borough, and when

• Start tipping out standing water weekly by June 2.
• Book any yard treatment for mid June, ahead of the August peak.
• Repellent can go away after September 9.
• No West Nile cases since 2016, so bites in Kodiak Island Borough are a nuisance; check window screens.

Kodiak Island Borough against the rest of AK

Kodiak Island Borough has the 19th longest season of 26 AK counties, at 84 days against 142 in Ketchikan Gateway Borough and 48 in Nome Census Area. Its mean temperature is 40.3°F.

• Bethel Census Area: June 5 to August 31 (86 days, 0 WNV)
• Southeast Fairbanks Census Area: May 29 to August 22 (85 days, 0 WNV)
• Anchorage Municipality: June 7 to August 28 (82 days, 1 WNV)
• Copper River Census Area: June 4 to August 23 (80 days, 0 WNV)

West Nile in Kodiak Island Borough

CDC ArboNET lists no human West Nile cases for Kodiak Island Borough from 1999 to 2025.

See how the dates are worked out, and when the season starts across the US.