United States, San Diego

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How we forecast?

San Diego Mosquito Forecast: What to Expect

The San Diego mosquito forecast indicates moderate to high activity from late spring through summer, peaking in July and August with levels around 8 on a 10-point scale. This seasonal surge aligns with warmer temperatures and increased humidity, common in the region's Mediterranean climate. Locals and visitors near popular spots like Balboa Park or Mission Bay should be especially mindful during these months. Understanding this seasonal pattern helps you plan outdoor activities with greater comfort and safety. For real-time updates, check the San Diego Mosquito and Vector Control Program website.

Year round mosquito forecast

Mosquito Intensity

Factors Driving Mosquito Activity in San Diego

Several elements influence mosquito populations in San Diego, including temperature, rainfall, and standing water availability. The city’s mild winters and coastal breezes typically keep numbers low, but summer heat and occasional rains create ideal breeding conditions. Key factors include:

Urban irrigation and garden ponds
Natural wetlands like the San Diego River Estuary
Stagnant pools post-rainfall

Additionally, human behaviors such as watering lawns in the evening can inadvertently boost mosquito breeding. Understanding these influences helps residents reduce local mosquito hotspots. Learn more about mosquito ecology at the CDC's Mosquito Control Tips.

Mosquito-Borne Diseases in San Diego

While San Diego is not a hotspot for mosquito-borne illnesses, vigilance is still essential. The primary concern is West Nile virus, occasionally detected in local mosquito populations. Symptoms can range from mild fever to neurological effects, especially in the elderly. Dengue and Zika viruses are rare here but can appear with increased travel and climate changes. Protect yourself by:

Using EPA-approved insect repellent
Wearing long sleeves and pants at dawn and dusk
Eliminating standing water around your home

For detailed health advisories, visit the San Diego County Health & Human Services.

Stay Updated and Prepared for Mosquito Season

Keeping abreast of mosquito activity in San Diego ensures you and your family stay protected year-round. Subscribe to alerts from local vector control agencies and adopt preventive habits, such as maintaining window screens and emptying containers that collect water. Remember, even in urban areas near landmarks like the Cabrillo National Monument, mosquitoes can be present. By staying informed via resources like the California Department of Public Health, you can enjoy San Diego’s outdoor beauty with peace of mind. San Diego mosquito forecast helps residents stay safe and enjoy the outdoors without worry.

Check out our recommended mosquito protection products

Mosquito-borne diseases in the area

Malaria

Zika

Dengue

Yellow Fever

Chikungunya

West Nile Fever

FAQs

Mosquito season typically runs from late spring through early fall, with peak activity in July and August.

West Nile virus is the primary mosquito-borne disease in San Diego, with rare cases of dengue or Zika due to travel-related exposure.

Eliminate standing water, use insect repellents, install window screens, and avoid outdoor activities during peak mosquito hours, especially dawn and dusk.

Further information

San Diego County Health & Human ServicesCDC Mosquito Control TipsSan Diego Mosquito and Vector Control Program

United States, San Diego

San Diego Mosquito Forecast: What to Expect

Year round mosquito forecast

Factors Driving Mosquito Activity in San Diego

Mosquito-Borne Diseases in San Diego

Stay Updated and Prepared for Mosquito Season

Mosquito-borne diseases in the area

FAQs

When is mosquito season in San Diego?

What diseases do San Diego mosquitoes carry?

How can I reduce mosquitoes around my home?

Further information