Why Do We Love Rain? Here's What Happens in Our Brains

Imagine you're having a tiring day. Thoughts race, deadlines pile up, your breath feels short. Then the sky darkens, the wind shifts, and the first drops fall onto the windowpane.

 

Suddenly, something inside you slows down.

 

Tense shoulders relax slightly. Thoughts shift, to a warm coffee, to a favorite song, or just sitting by the window doing nothing. The rain comes, and a part of us feels like coming home.

 

But why? What exactly happens in our brains when it rains?

 

In this article, we'll review everything, from why the sound of rain calms the nerves, why its aroma evokes inexplicable emotions, to why almost everyone has a personal connection with rain.

Rain Always Feels More Personal Than We Realize

Picture of coffee, books, and glasses by a rainy window

 

Before delving into the science, let's first observe the patterns that emerge when rain comes. Because these patterns are not coincidental.

Rain Playlists, Misty Cafes, Afternoon Naps During Drizzle

Try opening Spotify and typing "rain." Hundreds of playlists will appear with titles that share a similar pattern: rainy day, cozy rain vibes, rain and coffee. Millions of people have similar needs: music to accompany the moments when it rains.

 

The pattern doesn't stop at playlists. Some habits that often emerge when rain comes:

 

• Suddenly craving a warm drink, even if the weather isn't too cold

• Liking to sit in a cafe with large windows, gazing at the wet streets

• Easier to fall asleep during a drizzle, even in the afternoon

• Becoming more reflective, easily recalling old things

• Wanting to read a book, journal, or do something more personal

 

These patterns appear across cultures, ages, and backgrounds. Indonesians, Japanese, or Brazilians have similar relationships with rain, though they express it differently.

 

There's something about rain that makes humans respond in a uniform way, and that response points to one thing: calmness.

These Habits Actually Have a Scientific Explanation

Our relationship with rain has specific biological and psychological foundations.

 

One of the most relevant studies was conducted by a research team from Brighton and Sussex Medical School in 2017. This study used fMRI (functional magnetic resonance imaging) to scan participants' brains as they listened to natural and artificial sounds alternately.

 

The results were interesting:

 

• Natural sounds triggered increased activity in the parasympathetic nervous system, the system responsible for the "rest and digest" response

• Participants' heart rates decreased when listening to natural sounds compared to artificial sounds

• Connection patterns in a brain area called the default mode network changed, indicating a calmer mental state

• The effect was most pronounced in participants who were initially in a high-stress condition

 

The sound of rain is one of the natural sounds most often associated with this effect. So when you feel calmer during rain, many biological processes are actually at work behind the scenes.

 

Let's break them down one by one.

Why Can the Sound of Rain Make Us Calmer?

Someone using an umbrella in the rain

 

Now let's delve deeper into one of the elements of rain that most often triggers a sense of calm: its sound.

Pink Noise and How the Brain Responds to Rain Sounds

Perhaps you've heard the term white noise, which is a sound like the hum of a fan or the static noise of an old television. In the world of acoustics, sounds are categorized based on their frequency distribution.

 

There's one very relevant category: pink noise.

 

Pink noise has even energy across all frequency octaves, with a softer character than white noise and feeling more natural to the ear. The sound of rain falls into this category.

 

A study in the Journal of Theoretical Biology in 2012 showed several findings:

 

• Exposure to pink noise reduced the complexity of brain waves, indicating a more relaxed state

• Participants who slept with pink noise experienced increased sleep stability compared to silent conditions

• This effect was observed in both night sleep and naps

 

That's why many sleep apps offer rain sounds as a primary option. It's not a trend, but a scientifically measurable effect.

Consistent Sound Patterns Make the Brain More Relaxed

The human brain instinctively monitors its environment. Whenever there's a sudden change in sound, the brain immediately "checks" to ensure there's no danger; a mechanism that has existed since our ancestors hunted in the wild.

 

In modern life, our brains are constantly bombarded by unpredictable sounds: honking, notifications, conversations, closing doors. The brain is always in alert mode.

 

The sound of rain works in reverse. Its pattern is repetitive but not monotonous, with small variations without dramatic surprises. The brain can finally rest from the task of monitoring the environment. The result: clearer thoughts, sounder sleep, reduced anxiety.

Baca selengkapnya tentang Apa Hubungan Aroma dan Kenangan?

Petrichor: The Scent of Rain We Unconsciously Love

Picture of a street submerged in rainwater

 

Then, we will talk about another element of rain, which influences us no less strongly: its aroma.

From Earth to Nose: The Science Behind the Smell of Rain

The distinctive scent that emerges when rain falls on the ground has a scientific name: petrichor. This term was coined in 1964 by Isabel Bear and Dick Thomas, two Australian researchers, in their paper in the journal Nature. The word comes from Greek: petra (stone) and ichor (the divine fluid of the Greek gods).

 

Petrichor is a combination of several elements:

 

• Geosmin, a compound produced by soil bacteria of the genus Streptomyces, gives a distinctive earthy scent

• Plant oils, accumulating in the soil during dry seasons and released when rain comes

• Ozone, especially during lightning, adds a sharp touch to the air

 

An MIT study in Nature Communications explains the mechanism through super slow-motion video. When raindrops hit porous soil, micro air bubbles are trapped and then burst, releasing aerosols containing geosmin, bacterial spores, and plant oils into the air.

 

Those aerosols are carried by the wind and enter our noses.

Why Do We Naturally Like This Scent?

The human nose is very sensitive to geosmin, even more sensitive than a shark's nose to blood. Humans can detect geosmin at a concentration of 5 parts per trillion.

 

The most accepted hypothesis for why our bodies prioritize this scent is related to evolution. For human ancestors, the scent of rain on dry ground was a crucial positive signal:

 

• Fresh water sources would come

• Plants would grow

• Game animals would gather at water sources

• Survival chances increased

 

Our brains inherited this positive connection. Although we no longer hunt, the body's emotional response to the smell of rain remains, deeply embedded in the oldest layers of the nervous system. That's why you feel peaceful when you smell wet earth, even if you live in a city with supermarkets on every block.

Why Does Rain Often Evoke Sudden Emotions?

Up to this point, we've discussed the sound and scent of rain separately. But what makes rain truly special is when all these elements come together and work in concert.

Rain Is a Multisensory Stimulus

Rain doesn't come through one sense. It assails us from various directions at once:

 

• The sound of raindrops falling on various surfaces

• The scent of petrichor rising from the wet earth

• The sight of dark skies, drops on the windowpane, a thin mist in the distance

• The temperature of the air decreasing and feeling cooler on the skin

• The dimming light, triggering the brain to release melatonin

 

The brain processes all these stimuli simultaneously. The result is a much richer emotional experience than if only one sense were active. Rain has a unique way of evoking emotions; not from one door, but from several doors at once.

How Does the Brain Bind Rain with Personal Memories?

Everyone has a "library" of rainy moments in their life. Rain while waiting at a bus stop, rain during heartbreak, rain when meeting someone important. The brain stores all those moments, complete with their emotions.

 

When rain comes again, the brain matches the new stimulus with old, stored moments. Suddenly, those memories surface unbidden. You might suddenly miss someone you haven't thought about in a long time. Or feel sad for no reason. Or suddenly feel grateful.

 

Rain is a very effective memory trigger, a clock for the brain that has access to all your emotional archives.

However, Not All Rain Has the Same Scent

After understanding the science behind the smell of rain, there's an interesting thing that often goes unnoticed: rain in every place actually doesn't produce the exact same smell.

Every Place Has Its Own Olfactory Signature

The smell of rain in an urban housing complex is different from the smell of rain in the mountains. The smell of rain on a coastal beach is different from the smell of rain in a tropical forest. Each has its own distinctive character that is difficult to explain in words, but your brain knows the difference.

 

This is what is called the olfactory signature of a place. Each location has its own unique combination of scents.

What Makes a Place's Scent Distinctive

Several key factors that shape the olfactory signature of a place:

 

• Soil type: volcanic, clay, sandy, or peat soil produces different scents when wet

• Surrounding vegetation: trees, leaves, flowers give their own aromatic character

• Air humidity: affects how long the scent lasts

• Minerals in rainwater: vary depending on atmospheric conditions at the location

• Pollution or air cleanliness: natural scents form more purely in places far from pollution

• Water sources and the sea: proximity to the sea adds specific aromatic elements

 

Rain in Tokyo will have a different scent than rain in Bali.

 

Rain in Scotland will have a different character than rain in Jember. And there is one island in Indonesia that has a very special olfactory signature, many people consider its scent to be among the most memorable in the archipelago.

Rain in Banda Neira: One of the Most Memorable Scents in Indonesia

Reed diffuser Home Nature: Rain in Banda Neira

 

There are many places in Indonesia that have a distinctive scent of rain. But Banda Neira is often mentioned as one of the most unforgettable.

 

Many who have been there claim that the aroma stays with them, even years after returning home:

Volcanic Soil and Nutmeg That Produce a Distinctive Aroma

Banda Neira is an island in the Banda Islands archipelago, Central Maluku. The combination of elements here is rare, and it is this combination that forms its unique aroma when the rain comes:

 

• Volcanic soil from Banda Api Volcano, active for centuries, producing distinctive mineral content

• Nutmeg trees that grow almost all over the island, their fallen leaves add an aromatic layer

• Humid tropical sea air, keeping the earthy scent "alive" longer

• Old colonial buildings with mossy wood and walls that react with rainwater

• Clean air because the island is far from big city pollution

 

When it rains, all these elements interact simultaneously. The result: a warm, earthy aroma, slightly sweet from nutmeg, with a touch of damp wood and clean sea air. A combination that cannot be found anywhere else.

When That Aroma Is Translated Into a Reed Diffuser

Not everyone has the opportunity to visit Banda Neira. It's far away, and access is not easy. But the aroma that makes many people fall in love with the island can be presented in another way.

 

Home of Humans collaborated with Jerhemy Owen, an Indonesian environmental activist, to translate the moment of rain in Banda Neira into a reed diffuser.

 

The result is Hujan di Banda Neira, an aroma designed to capture that specific atmosphere in your bedroom.

 

Its formulation is built from natural ingredients that have characters similar to Banda's natural elements:

 

• Elemi for a fresh, earthy tree resin aroma

• Moss and Patchouli for a deep, damp earth layer

• Cedarwood and Sandalwood for the warmth of colonial wood

• Mimosa and Violet for a touch of cool air before the rain falls

 

The formula has also been tested with IFF Science of Wellness Technology, a technology from International Flavors & Fragrances that ensures the aroma truly provides a relaxing sensation.

 

The result of scientific testing, not subjective claims. When you smell it, your brain instinctively recognizes calming aroma signals, and your body responds by lowering stress levels.

Not All Rain Must Be Waited For, Some Can Be Brought In

Our relationship with rain is much deeper than mere liking. Its sound soothes the nerves, its aroma triggers evolutionary responses, and their combination evokes long-lost memories.

 

That's why rain is often something to look forward to, and why an aroma designed to bring the essence of rain, like Hujan di Banda Neira, can feel meaningful.

 

Bringing one of the most calming things in the world into the room that should be your resting place.