Whether mosquitoes are active right now depends entirely on where you live and the current temperature. Mosquitoes become active when temperatures consistently stay above 50°F (10°C) and peak during warm, humid weather between 75-85°F (24-29°C). Here’s a regional breakdown of mosquito season timing.
Quick Answer
- Mosquitoes are active when temperatures stay above 50°F (10°C) consistently
- Peak activity: warm, humid evenings between 75-85°F (24-29°C)
- Southern US: mosquitoes can be active year-round in Florida, Texas coast, and the Deep South
- Northern US: mosquito season typically runs June through September
- They stop flying below 50°F and die or hibernate below freezing
US Mosquito Season by Region
| Region | Season Start | Peak Months | Season End |
|---|---|---|---|
| South Florida | Year-round | June-September | Year-round |
| Gulf Coast (TX, LA, MS) | March | June-August | November |
| Southeast (GA, SC, NC) | April | June-August | October |
| Mid-Atlantic | May | July-August | September |
| Midwest | May-June | July-August | September |
| Northeast | May-June | July-August | September |
| Pacific Northwest | June | July-August | September |
| Mountain West | June | July-August | September |
| Desert Southwest | After monsoon rains | July-September | October |
When Are Mosquitoes Most Active During the Day?
Most mosquito species are most active during two daily windows: dawn (30 minutes before to 30 minutes after sunrise) and dusk (30 minutes before to 30 minutes after sunset). These low-light, high-humidity periods are ideal for mosquito feeding.
The exception is Aedes aegypti and Aedes albopictus (Asian tiger mosquito), which are aggressive daytime biters. If you’re getting bitten during midday hours, you’re likely dealing with an Aedes species.
How to Prepare for Mosquito Season
- Pre-season (2-4 weeks before): Do a property inspection. Dump standing water, clean gutters, repair screens.
- Drop Mosquito Dunks in permanent water features, rain barrels, and drainage areas before mosquitoes start breeding.
- Stock up on repellent: Sawyer Picaridin or OFF! Deep Woods for personal protection.
- Set up Thermacell devices on patios and decks before the first warm evenings.
Key Takeaways
- Mosquitoes activate above 50°F and peak at 75-85°F. Season length varies from year-round (South Florida) to 3-4 months (Northern US).
- Most species are most active at dawn and dusk, but Aedes mosquitoes bite aggressively during daytime hours.
- Prepare 2-4 weeks before your regional season starts by eliminating standing water and stocking repellent.
