Do Mosquitoes Disappear in Winter in Bangalore?

Bangalore's winter is mild compared with much of India, with cool mornings and evenings. Many people notice fewer mosquitoes then, and assume they have gone. Mostly, though, they have just slowed down.

This guide explains what happens to mosquitoes in winter.

The short answer

Mosquitoes do not fully disappear in Bangalore's winter. Cooler temperatures slow their development and reduce their activity, so numbers often fall compared with the monsoon, but the climate is mild enough that breeding continues at a lower rate, particularly indoors, in warm spots and where water stands. Some species survive by resting in sheltered places such as wardrobes, behind curtains and in basements, and Aedes eggs can survive dry periods. Winter is a good time to clear breeding sites and prepare before the next season.

What cold does to mosquitoes

• Slower development from egg to adult, so fewer emerge in a given time.
• Reduced biting activity during cooler hours.
• Shorter active periods, mainly in the warmer part of the day.

Why they do not vanish

1. Bangalore winters are mild, so breeding can continue slowly.
2. Indoor spaces stay warm enough, particularly bedrooms, bathrooms, basements and kitchens.
3. Adult females may shelter and survive in protected spots.
4. Aedes eggs can survive dry spells and hatch later when water returns.
5. Standing water in tanks, drains and containers persists.

What you may notice

• Fewer mosquitoes outdoors in the evening.
• Persistent mosquitoes indoors in warm, humid rooms.
• A rise as temperatures climb in late winter and spring.

Use the quieter season well

• Do a thorough clean-up of breeding sites: scrub and dry containers, clear gutters and drains, fix leaks and remove discarded items.
• Check and repair screens and nets.
• Clean tanks and sumps and fit lids and mesh.
• Plan professional treatment and a society programme before the next season.
• Stay alert indoors where mosquitoes persist.

Keep protecting yourself

• Use nets or screens in bedrooms if mosquitoes are still present.
• Continue weekly checks on indoor water such as plant containers and trays.

Health note

Mosquito-borne diseases can occur at any time of year. See a doctor for fever or other concerning symptoms.

When to call a professional

If you still have mosquitoes in winter, a professional can find indoor or hidden breeding sites.

Frequently asked questions

Why are there mosquitoes in my bedroom in December?

Warm, sheltered rooms allow them to survive and bite.

Is winter safe from dengue?

Risk is usually lower but not zero.

Should I stop weekly checks?

Continue them, at least for indoor water.

Do eggs die in winter?

Not necessarily. Aedes eggs can survive.

This guide is part of IPest's complete resource on mosquito control. For identification help, prevention and treatment options, see our full mosquito control guide for Bangalore.