Is Warm Weather Good for My Mental Health?

You’re smiling more. Saying yes to plans. Maybe even waking up with more energy.

When the sun starts setting later and jackets are swapped for T-shirts, everything just seems to feel better.

But are you imagining it, or does the warm weather really improve your mental health? We asked an expert to break it down.

5 ways that warmer weather improves your mood.

Wondering what’s behind your new sunny disposition?

“We often observe an improvement in mood and general outlook as the seasons shift from winter to spring and summer,” says Jim O’Dea, Ph.D, MBA, with Hartford HealthCare’s Behavioral Health Network. “While this is different for everyone, many people report feeling more energetic, happy and optimistic during the warmer months.”

Here’s how it works.

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1. Sunlight.

It isn’t just for tanning – getting more sunlight helps your mood, too.

“More sunlight means more serotonin, the feel-good chemical in your brain which boosts your mood,” says Dr. O’Dea. “And on top of that, your body produces vitamin D when exposed to sunlight – which is also linked to mental health.”

So if you’re feeling down, more sunshine could be the answer.

“There’s strong evidence that exposure to bright light, especially early in the day, can improve symptoms of depression,” Dr. O’Dea says. “Typically, we recommend around 10,000 lux — a very bright light — for about 30 minutes in the morning. But even just getting outside when the sun is up can help.”

But how much daylight do you need?

“It doesn’t have to be a full afternoon in the sun,” he adds. “Just stepping outside for a walk in the morning or opening your blinds to let in natural light can make a difference.”

> Related: Why a Beach Trip Might Be Just What the Doctor Ordered

2. Socialization.

If you’ve been hibernating since November, your mental health might feel the impact.

“Warm weather brings people together,” says Dr. O’Dea. “Patios fill up, walking paths get busy, and community events kick into gear.”

All of these mean more chances to connect – and fewer chances to feel down.

“Social connection is a well-established protective factor against depression and anxiety,” says Dr. O’Dea. “Meaningful relationships and regular interaction reduce feelings of isolation and help build emotional resilience.”

In short — hanging out with others helps us feel grounded, supported and happier overall.

3. Activity.

Let’s be honest – it’s a lot easier to get moving when it isn’t freezing outside.

“Whether it’s a long walk, quick bike ride, or just chasing your pets around the yard, we tend to be more active when the weather warms up,” says Dr. O’Dea.

And the benefits? They go way beyond fitness.

“Exercise improves mental health by reducing anxiety, depression and negative mood,” says Dr. O’Dea. “There’s even evidence that for some people, it can be as effective as medication for mild to moderate depression.”

Plus, when you’re outside being active, you’re doubling up on benefits: movement and mood-boosting sunlight. It’s a win-win.

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4. Sleep.

Here’s something you might not expect — getting more natural light during the day can actually help you sleep better at night.

Natural sunlight helps regulate your circadian rhythm, your body’s internal clock that tells you when to wake up and when to wind down. When that rhythm is working properly, your sleep quality improves — and better sleep means better mental health.

“Bright light during the day improves alertness and sleep quality,” says Dr. O’Dea. “But watch out: Warmer nighttime temps, especially above 70°F, can interfere with sleep if your space isn’t well-cooled.”

So enjoy the daylight — just be sure to keep your bedroom cool.

5. Nature.

Ever notice how being in nature just feels…better? You’re not imagining that either.

Research has shown that time spent in green spaces — like parks, forests, or even plant-filled balconies — can reduce stress and anxiety.

“There’s a growing body of evidence suggesting that exposure to nature lowers cortisol, the body’s stress hormone,” Dr. O’Dea explains. “Even small doses, like sitting near a window with a view of trees, can help.”

Get ready for spring.

There’s no one-size-fits-all when it comes to mental health. But for many of us, the warm weather mood boost is real.

That said, it’s still important to be mindful, reminds O’Dea. Spring sunshine can lift your spirits, but don’t forget the sunscreen, stay hydrated, and make time for the kinds of self-care that help you feel your best.

And hey — if that means taking a long walk in the sunshine or meeting a friend for iced coffee on a park bench? Even better.

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