Why Summer Allergies Spike—and How to Fight Back

Summer allergies affect many people as environmental triggers become more widespread during the warmer months. These reactions often cause discomfort and disrupt daily life for those sensitive to seasonal pollen and mould. Common symptoms range from nasal congestion to itchy eyes and fatigue. Grass pollen, weed pollen, outdoor mould, and lingering tree pollen are the main culprits behind summer allergies. In the Northern Hemisphere, tree and grass pollen levels are highest between May and July. Weed pollen and outdoor mould spores then peak from July to November.

Symptoms can appear at any time but often worsen in the morning and evening. Pollen counts rise between 5 and 10 a.m., while indoor allergens become more noticeable at night. Those with existing allergic conditions, a family history of allergies, or frequent outdoor exposure during high-pollen periods face a higher risk.

Diagnosis typically involves a physical exam, review of symptoms, and allergy testing through skin prick or blood tests. Doctors may check the timing and frequency of reactions to confirm the cause.

To reduce exposure, experts recommend avoiding known triggers and monitoring daily pollen forecasts. Using air conditioning and keeping indoor humidity between 30% and 50% can also help minimise symptoms. Treatment options include over-the-counter corticosteroid nasal sprays and oral antihistamines. For severe cases, prescription medications may be necessary. Managing exposure and following medical advice can significantly ease the impact of summer allergies.