What Time of Day Do Different Mosquitoes Bite?

If you think mosquitoes only bite at night, you are missing part of the picture. Different types are active at different times, and the dengue-carrying mosquito bites mostly in the day. Matching your protection to the biting time gives better results.

This guide summarises the usual patterns. They are general, and individual behaviour varies.

The short answer

Aedes mosquitoes, which spread dengue and chikungunya, bite mostly during the day, with peaks in the early morning and late afternoon. Culex mosquitoes bite mostly at night, including indoors. Anopheles mosquitoes, which spread malaria, bite mostly from dusk through the night, with peaks late in the evening and before dawn. Because of these differences, protection should cover the whole day and night: daytime repellent and clothing outdoors, and nets, screens and repellents in the evening and at night.

By type

• Aedes (tiger and yellow fever mosquitoes): Daytime biters. Peaks around early morning and the hours before sunset. They bite indoors and outdoors.
• Culex: Dusk and night. Often bite indoors while people sleep.
• Anopheles: Dusk and night, and they often enter homes to bite.

A rough daily guide

1. Early morning: Aedes active, particularly outdoors and in shady places.
2. Midday: Lower activity, though Aedes can bite in shade.
3. Late afternoon: Aedes activity rises again.
4. Dusk: Culex and Anopheles become active.
5. Night: Culex and Anopheles bite, often indoors.
6. Before dawn: Another Anopheles peak in some areas.

What to do at different times

• Day: Use repellent on exposed skin outdoors, wear long sleeves and trousers where practical, keep screens in place and avoid sitting in shaded vegetation.
• Evening: Close or screen doors and windows, use fans, and apply repellent if you are outside.
• Night: Use a bed net or screened room, fans and, if appropriate, repellents.

Reduce breeding at all times

• Empty, scrub and cover water containers weekly.
• Keep drains clear.
• Cover tanks and fix leaks.

Why timing matters for health

Because dengue and chikungunya mosquitoes bite in the daytime, a bed net alone does not protect against them, particularly for people who nap, work from home or are at home during the day. Protection should include daytime measures.

Weather and local variations

Biting patterns can shift with temperature, humidity, light and local conditions, and mosquitoes may bite at other times, especially in shade or indoors.

When to see a doctor

See a doctor if you develop fever, severe headache, joint or muscle pain, rash or chills after mosquito exposure.

When to call a professional

If mosquitoes are persistent at any time of day, a professional can survey for breeding sites and plan control.

Frequently asked questions

Do bed nets protect against daytime mosquitoes?

Only when you are under them. Use other measures during the day.

When are mosquitoes least active?

Often in the hottest part of the day, but not always.

Do mosquitoes bite in air-conditioned rooms?

Fewer do, but they can still be present.

Is dusk the worst time?

For some types, yes. Aedes peak at other times.

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.