Is August Too Early for a Flu Shot?

December to February is the typical flu season, but that doesn’t mean you should wait until winter to get your annual flu shot. Many pharmacies and clinics start offering flu vaccines as early as August, but is that too soon to roll up your sleeve?

At Summit Primary Care, with multiple locations across Colorado, our providers help patients make informed decisions about the timing of their vaccinations. Here’s what you should know about getting the flu shot in August and whether it’s the right move for you.

Why timing matters for your flu shot

The flu shot becomes fully effective about two weeks after you receive it. That means if you wait until flu cases are already spreading in your community, you may not be protected in time. Getting vaccinated earlier ensures your immune system has time to build protection before exposure.

But it’s also true that immunity can wane over time. If you get your flu shot too early, there’s a chance your protection may decline before the flu season is over, especially if flu activity peaks later than usual.

Who should get vaccinated in August?

August is an ideal time for certain groups to get vaccinated, including:

• Children aged 6 months to 8 years (especially if they need two doses)
• Pregnant individuals in their third trimester, to protect both mother and baby
• People traveling abroad or attending crowded events in early fall
• Those with chronic health conditions who may be more vulnerable to complications

In these cases, early vaccination is better than none and may be critical to staying healthy.

Who should wait a bit longer?

Healthy adults under the age of 65 may consider waiting until late September or early October to maximize immunity during the peak of the flu season. However, this comes with a caveat: it’s better to get vaccinated early than not at all. If your schedule is unpredictable or you’re worried you’ll forget later, getting the shot in August may be the safest option.

Can you get the flu shot too late?

Flu season can stretch into spring, so it’s never too late to get vaccinated. Even if you miss the “ideal window,” the vaccine can help prevent complications or reduce the severity of your symptoms if you get sick.

What to expect after vaccination

Mild side effects, such as soreness at the injection site, fatigue, or a low-grade fever, are common after receiving a flu shot. These typically resolve within a day or two and are far less serious than getting the flu itself.

Protect yourself and those around you

Flu vaccination helps protect you and those around you, especially young children, older adults, and people with compromised immune systems. When more people get vaccinated, flu viruses have fewer opportunities to spread.

Ready to protect yourself this flu season?

If you’re unsure whether to get the flu shot in August, please call the office. We can help you make the best decision based on your age, health status, and lifestyle. 

Contact Summit Primary Care or book an appointment online to schedule your flu shot and stay ahead of the season.