By August, many people in Minnesota feel like they have made it through the worst of allergy season. Spring pollen has come and gone, summer is winding down, and then suddenly their eyes start itching, watering, or looking red all over again.

It’s something we see every year around this time. Patients tell us their eyes felt fine for weeks, only for irritation to return as summer comes to a close. While it can feel like allergies have started all over again, late summer often brings a new wave of seasonal allergens that can trigger eye symptoms.

Why Late Summer Feels Like a Repeat

Minnesota’s allergy season does not happen all at once. Different plants release pollen at different times of the year, which is why symptoms often come and go in waves. Even if your spring allergies were mild, you may notice eye irritation returning later in the summer.

Allergic conjunctivitis happens when the immune system reacts to something in the air, in this case ragweed pollen, and that reaction shows up in the conjunctiva, the clear tissue covering the white part of the eye. The result is usually itching first, then redness, tearing, or a puffy feeling around the eyelids. According to the American Academy of Ophthalmology, weed pollens are one of the major seasonal contributors to eye irritation later in the growing season, alongside tree and grass pollen earlier in the year.

Allergies or Dry Eye?

Late summer eye irritation isn’t always caused by allergies alone. Dry eye can cause many of the same symptoms, especially after months of air conditioning, increased screen time, or changing weather conditions.

One clue is that allergies usually cause significant itching, while dry eye tends to feel more like burning, grittiness, or tired eyes that worsen throughout the day. Of course, it’s also possible to have both at the same time.

An eye exam can help determine what’s causing your symptoms and whether there’s anything else contributing to the irritation.

What We Look For During These Visits

When a patient comes in describing late summer eye irritation, the exam focuses on confirming that the pattern matches typical seasonal allergy behavior and ruling out anything that would need a different approach. We also talk through practical habits, how contact lenses are tolerating the season, whether rubbing has become a reflex, and what indoor air looks like at home or work.

Rubbing is worth mentioning on its own. It feels like relief in the moment, but it can add mechanical irritation on top of whatever the allergic reaction is already causing. Patients are often surprised by how much of their discomfort is coming from rubbing itself rather than the original trigger.

When a Visit Adds Value

Mild itching or occasional redness during ragweed season is common and does not necessarily mean anything is wrong. It is worth scheduling a visit if symptoms are persistent, if they interfere with reading, driving, or screen use, if light sensitivity increases, or if vision changes in any way. None of these signs point to a specific diagnosis on their own, but they are reasonable reasons to get a clearer picture.

If your eyes have felt off again this month, you are not imagining a pattern. Allergy season is real, and so is the fatigue of dealing with allergy symptoms twice in one year. At St. Paul Eye Clinic, we are glad to talk through what is going on and help you understand what your eyes are telling you.