Why Am I Getting Mosquitoes in My House in Winter?

It’s a common belief that mosquitoes are only a problem during the warm summer months. So, it can be quite surprising and annoying to find these pesky insects in your home during the winter. If you’re wondering why you’re encountering mosquitoes in the winter, you’re not alone.

Let’s explore some reasons why these unwelcome guests might be making an appearance in your home during the colder months.

Understanding Mosquitoes’ Winter Behavior

Typically, mosquitoes are most active in warm weather. They thrive in temperatures above 50°F (10°C). When the temperature drops, most mosquitoes go into a hibernation-like state, known as diapause, where they are inactive.

However, not all mosquitoes follow this pattern, which can lead to encountering mosquitoes in the winter inside your home.

Reasons for Winter Mosquitoes in Your Home

1. Indoor Temperatures

Your warm home can provide an ideal environment for mosquitoes to survive during the winter. If your house is warm enough, it may prevent mosquitoes from entering diapause, allowing them to remain active throughout the season.

2. Breeding Indoors

Some mosquitoes can breed indoors, especially if there are sources of stagnant water, like potted plant trays or clogged drains. These breeding sites can allow mosquitoes to continue their lifecycle even during the winter.

3. Accidental Entry

Mosquitoes might find their way into your home accidentally when you open doors or windows, or through small cracks and crevices. Once inside, the warmth of your home can re-activate them if they are in a dormant state.

4. Overwintering

Certain species of mosquitoes are adept at finding hiding spots in your home to overwinter. Dark, humid places like basements, garages, or crawl spaces can provide perfect spots for them to stay until warmer weather returns.

How to Prevent Mosquitoes in the Winter

To reduce the chance of having mosquitoes in your home during the winter, consider the following tips:

1. Eliminate Standing Water

Remove any sources of stagnant water in and around your home. Check plant saucers, pet water dishes, and other areas where water may accumulate.

2. Seal Entry Points

Make sure all windows and doors are properly sealed. Check for and repair any tears in window screens and seal cracks in walls or foundations.

3. Reduce Indoor Humidity

Use dehumidifiers in damp areas of your home, like basements, to make the environment less hospitable to mosquitoes.

4. Use Mosquito Repellents

Consider using mosquito repellents and deterrents indoors. Natural options like citronella candles or essential oils can be effective.


Encountering mosquitoes in the winter can be a nuisance, but understanding why they are present and taking steps to mitigate them can greatly reduce the likelihood of winter mosquito problems in your home. Remember, the key is to make your home less inviting to these pests by controlling the temperature, and humidity, and eliminating breeding grounds.

Have you experienced mosquitoes in your home during the winter? What strategies have you used to deal with them? Share your experiences and tips in the comments below. Let’s help each other keep our homes mosquito-free, even in the colder months!



Eric is an information technology professional with over 10 years of experience in the field. he specialize in system administration, network engineering, and security. He is also proficient in web development and have a strong background in business. He is currently a senior systems administrator for a large financial services company. In his free time, he enjoy blogging about technology news and sharing tips and tricks for using various software applications.

Press ESC to close