Coffee in summer is different: science says so (and it’s not nostalgia)

I maestri della tostatura media

Have you ever noticed that coffee in the summer, especially at the beach, always tastes a little strange?

Even if it’s the same jar, the same blend, the same old ritual. Far from home, something doesn’t add up. The first thought is: “It must be the place, it must be the nostalgia.” It’s not like that. It’s chemistry, physics, and biology working together.

Science explains exactly what happens in your cup when you change cities, altitudes, or seasons.

Coffee is 90-95% water.
Every city has its own water: different hardness, different minerals, different pH. Water rich in calcium and magnesium extracts coffee completely differently than soft, salt-poor water.

The result? Same blend, same roasting, same preparation method, but a flavor that varies from region to region, and we might even say from city to city.

It’s not your perception that’s deceiving: it’s the chemical extraction that, literally, produces a different drink.


As you rise in altitude, atmospheric pressure decreases, and water boils at a lower temperature. At 2,000 meters, for example, water boils at around 93°C instead of the typical 100°C at sea level.

This means a less intense extraction: fewer volatile aromas released, less body, a coffee perceived as “lighter” or less rounded.

This isn’t necessarily a flaw. For example, if we pretend to prepare a moka pot using the traditional method and dark-roasted commercial coffee, which only has burnt notes and strong bitterness, a more delicate extraction is the best thing we can do!



About 80% of coffee’s aroma is perceived through smell, not taste, even if we don’t realize it. However, the sense of smell is extremely sensitive to environmental conditions.

The salty air, saturated with iodine and sodium chloride, and the high humidity typical of coastal areas alter the ability of the olfactory receptors to perceive the aromatic compounds in coffee, the same ones you normally recognize as notes of chocolate, dried fruit, or caramel.

The result is a coffee that “seems” less aromatic, even though there is exactly the same amount of aroma in the cup as always.


High temperatures also alter the sensitivity of taste buds.
In hot weather, the perception of sweetness tends to diminish, while bitterness is more pronounced. This is the same reason why in summer many drinks, even with the same composition, are perceived as “stronger.”

So your favorite espresso, on a hot day, may objectively taste more bitter, even if the recipe hasn’t changed one iota.


At this point the question is natural: if I travel, if I change cities, if it’s hot… do I have to resign myself to a “different” coffee every time?

The answer, in reality, is a small twist: there’s no need to chase the same conditions as your home.

You need:
  • a coffee that handles variables well
  • a more stable extraction, less sensitive to changes in water temperature
  • and a roasting designed to remain balanced even when the environment plays against you

This is precisely why it’s worth choosing blends designed for resilience. A coffee that retains its character even on vacation, in the mountains, or on a scorching hot day isn’t a coincidence: it’s the result of a selection and roasting process specifically tailored to this purpose.

Like a select, flawless coffee, medium roasted, which slows down oxidation and avoids the most unpleasant sensations during the tasting phase.

Here are our most resistant coffees:

The sweetest coffee.

The freshest coffee.

The most aromatic coffee.

The creamiest coffee.

Marketing, E-commerce e Social Media Manager
Coffee Lover

Author

Martina Mazzoleni

Marketing, E-commerce e Social Media Manager Coffee Lover

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