Can beer go bad if left outside?

In this brief study, we will answer the question, “can beer go bad if left outside?” and will also address the factors affecting beer spoilage and storing practices.

Can beer go bad if left outside?

Yes, beer can go bad if left outside, especially in the case of hot and humid weather. Beer’s shelf life is reduced from almost six months to a few weeks when stored at room temperature while exposing it to very high temperatures alters the flavor of the beer after a few days of exposure.

Is it OK to leave beer out in the sun?

When ultraviolet light comes into contact with your beer, it may affect the essential oils found in the hops. The chemical reaction produces a skunk-like odor as a result of the reaction. Furthermore, air may alter the taste of beer, which is why an opened bottle of beer loses a significant amount of its flavor over time after it has been opened. Heat may affect the flavor of beer, although it is not as significant as light in this case.

Which beer is the most negatively impacted by exposure to direct sunlight?

The darker the beer, the less susceptible it is to ultraviolet radiation. Dark beer absorbs a broader spectrum of light than light beer and is less bitter, to begin with, making it a better choice for outdoor activities. It is possible to leave a Guinness out in the sun for an extended time without the beer being spoiled.

Pale beers, especially India Pale Ales and New England India Pale Ales, are the ones that are most influenced by sunshine. Not only does the fact that they begin with a high hop content not assist, but exposure to UV light exacerbates the pale color.

Factors that influence the date on which beer becomes stale

Because there are so many variables that affect how long a beer will survive, sell-by dates are often based on informed guesses. The following elements of your beer’s journey from the brewery to your glass should be taken into consideration:

Traveling distance

The distance traveled by a beer within its distribution area has an impact on how long it takes to mature. Long road journeys imply that your beer has aged by the time it reaches you, increasing the chance that it has been disturbed, exposed to heat or light, or anything else similar has occurred. In general, fresh beer is considered to be a local beer.


If your favorite imperial stout is difficult to maintain in stock as a result of its widespread appeal, you can be certain that it hasn’t been sitting around for an extended time before you consume it. Rare objects that have accumulated dust maybe hundreds of years old.


Can keep beer fresher for longer periods because they screen it from direct sunlight and protect it from airborne germs and other contaminants such as bacteria. If you don’t like cans, brown glass bottles, which function similarly as sunglasses in terms of protecting UV rays and preventing skunking, are an option; green bottles are also a possibility. Clear bottles offer the lowest level of protection against ultraviolet radiation.

Other FAQs about Beer which you may be interested in.

Can you mix beer and wine?

Can minors buy non-alcoholic beer?

Can old beer make you sick?

Techniques for Keeping Beer in Good Condition

A beer’s quality is influenced by a variety of factors such as temperature, sunlight exposure, and the container in which it is stored, as shown in the chart. Follow these simple beer preservation rules to make sure that anything from a Bud Light to a barleywine tastes its best:

Keep the container in the refrigerator

Make sure to keep your beer refrigerated to delay the aging process and protect it from ultraviolet light. Beer should be stored at a temperature between 50 and 55 degrees Fahrenheit, but sealed bottles and cans can be kept at a lower temperature if they are properly sealed. A separate beer refrigerator allows you to control the temperature of both the storage and serving of the alcoholic beverage.

Go to a place where it is dark

While a decent beer cooler will keep your beer out of the sun if you want to keep it at room temperature, select a cool area where the temperature changes little for the day. Ideal conditions will be dark with no direct sunlight shining on your beer and causing it to start skunking prematurely. 

Store the beer upright in a cold, dry location

bottles and cans should be stored upright in your refrigerator or on a shelf to prevent excessive oxidization. This exposes the beer’s lowest surface area to the air, which slows the aging process while standing a drink on its side increases the available surface area for oxidation, which speeds up the aging process.


In this brief study, we answered the question, “can beer go bad if left outside?” and also addressed the factors affecting beer spoilage and storing practices.