Ottawa is experiencing one of its hottest days of the summer. Learn how to stay cool, protect your home, avoid heat-related illness, and safely navigate extreme heat conditions in the capital.

If you've stepped outside today, you've probably noticed one thing immediately: it's hot. Really hot.

Ottawa is experiencing one of the most intense heat events of the summer, with temperatures soaring into the 30s and humidex values making it feel even warmer. The combination of heat and humidity can make outdoor activities uncomfortable and, in some cases, dangerous.

While many residents are enjoying patios, beaches, and summer events, days like today are also a reminder of the importance of staying hydrated, protecting your home, and recognizing the signs of heat-related illness.

Here's what Ottawa residents should know during today's extreme heat.

Why Does Ottawa Feel So Hot?

Many people are surprised by how intense Ottawa summers can be.

While cities like Toronto often benefit from lake breezes, Ottawa's inland location can create conditions where heat and humidity become trapped over the region.

The result?

A temperature of 32°C can quickly feel like:

• 38°C

• 40°C

• Even higher with the humidex

That's why today's heat feels much more intense than the actual air temperature suggests.

Stay Hydrated

One of the simplest ways to stay safe is also one of the most important.

Drink water throughout the day, even if you don't feel thirsty.

Some quick tips:

✔ Carry a reusable water bottle

✔ Limit alcohol during peak heat

✔ Drink extra water if exercising outdoors

✔ Take regular breaks in shaded or air-conditioned spaces

By the time you feel thirsty, your body may already be dehydrated.

Avoid Outdoor Activity During Peak Hours

The hottest part of the day is typically between:

11:00 AM and 4:00 PM

If possible, schedule activities:

• Early in the morning

• Later in the evening

• In shaded areas

This is especially important for:

• Children

• Seniors

• People with health conditions

• Outdoor workers

Cool Off at Ottawa's Beaches

One of the best ways to beat the heat is to get near the water.

Popular options include:

Petrie Island

A favourite east-end destination featuring:

• Sandy beaches

• Swimming areas

• Paddleboarding

• Picnic spaces

Mooney's Bay

One of Ottawa's most popular urban beaches with plenty of space and amenities.

Westboro Beach

Recently revitalized and offering beautiful views of the Ottawa River.

Expect larger crowds than usual during today's heat.

Visit an Air-Conditioned Museum

Not every summer activity needs to happen outdoors.

Ottawa's museums provide a perfect escape from extreme temperatures.

Great choices include:

• Canadian Museum of Nature

• Canadian War Museum

• National Gallery of Canada

• Canadian Museum of History

• Canada Science and Technology Museum

You'll stay cool while exploring some of Canada's top attractions.

Don't Forget Your Pets

Today's heat isn't just tough on people.

Pets can overheat quickly.

If you're walking your dog:

• Go early in the morning

• Walk later in the evening

• Bring water

• Avoid hot pavement

A simple test:

If the pavement feels too hot for your hand, it's too hot for your pet's paws.

And remember—never leave a pet in a parked vehicle.

Keep Your Home Cool

Many Ottawa homeowners are doing everything possible to keep indoor temperatures manageable.

Some simple strategies include:

Close Blinds and Curtains

Especially on south- and west-facing windows.

Run Ceiling Fans

Fans help circulate air and reduce the workload on your air conditioner.

Limit Heat-Producing Appliances

Consider avoiding:

• Ovens

• Dryers

• Dishwashers during the hottest part of the day

Change HVAC Filters

A clean filter helps your air conditioning system run more efficiently.

Check on Family and Neighbours

Extreme heat can be particularly dangerous for:

• Seniors

• People living alone

• Individuals with medical conditions

A quick phone call or visit can go a long way.

Sometimes the most important heat-safety tip has nothing to do with weather and everything to do with community.

Signs of Heat Exhaustion

Watch for symptoms such as:

• Excessive sweating

• Dizziness

• Headache

• Nausea

• Muscle cramps

• Fatigue

If someone experiences severe symptoms or becomes confused, seek medical assistance immediately.

Heat-related illnesses can escalate quickly.

Homeowner Tips During Extreme Heat

Today's temperatures can also put additional strain on your home.

Consider:

Checking Your Air Conditioner

If your AC is struggling, now may be the time for maintenance before peak summer demand continues.

Watering Strategically

Water lawns and gardens early in the morning or later in the evening to reduce evaporation.

Inspecting Attic Ventilation

Poor ventilation can trap heat and increase cooling costs.

Monitoring Energy Usage

Extreme heat often leads to increased electricity consumption across the city.

Why Ottawa Summers Feel More Extreme

In recent years, Ottawa has experienced:

• More heat warnings

• More severe thunderstorms

• Greater weather variability

• Longer stretches of high humidity

Many homeowners are increasingly investing in:

• Air conditioning upgrades

• Better insulation

• Energy-efficient windows

• Improved landscaping for shade

Weather resilience is becoming an important part of homeownership.

Best Places to Escape the Heat Today

If you're looking for immediate relief, consider:

🏖️ Petrie Island

🏖️ Mooney's Bay

🏛️ Canadian Museum of Nature

🛍️ Rideau Centre

☕ Your favourite air-conditioned coffee shop

🌳 Dominion Arboretum (early morning or evening)

🚣 Dow's Lake paddle rentals

Frequently Asked Questions

How hot is Ottawa today?

Temperatures are reaching the low-to-mid 30s, with humidex values making it feel significantly hotter.

What is the humidex?

The humidex combines temperature and humidity to show how hot it actually feels to the human body.

Is it safe to exercise outdoors?

It's best to avoid strenuous activity during peak afternoon hours and stay hydrated.

What's the best Ottawa beach during a heat wave?

Petrie Island and Mooney's Bay are two of the most popular choices.

How can I keep my home cooler?

Close blinds, use fans, avoid heat-producing appliances, and ensure your HVAC system is operating efficiently.

Should I be concerned about my pets?

Yes. Limit outdoor exposure, provide fresh water, and avoid walking on hot pavement.

Final Thoughts

Ottawa summers are one of the reasons so many people love living here—but days like today remind us that extreme heat deserves respect.

Whether you're heading to the beach, enjoying a patio, exploring a museum, or simply relaxing at home, taking a few precautions can help you stay safe and comfortable.

The good news is that Ottawa offers plenty of ways to beat the heat. From Petrie Island and Mooney's Bay to air-conditioned museums and shaded parks, there are lots of options for making the most of the summer while staying cool.

And if you're planning to spend time outdoors today, don't forget the essentials: water, sunscreen, shade, and common sense.

Stay cool, Ottawa.

Ottawa summers are beautiful—but they can also be surprisingly hot.

With temperatures often climbing above 30°C, and humidex values pushing into the high 30s or even low 40s, spending long periods outdoors can quickly become uncomfortable and even dangerous.

Whether you're new to Ottawa or have lived here for years, knowing where to cool off can make all the difference during a heat wave.

From beaches and splash pads to air-conditioned museums and shaded walking trails, here are some of the best ways to stay cool this summer in Ottawa.

🌊 Spend the Day at Petrie Island

If you're looking for a beach day without leaving the city, Petrie Island is one of Ottawa's best options.

Located in the east end, it offers:

• Sandy beaches

• Swimming

• Paddleboarding

• Kayaking

• Picnic areas

• Nature trails

Arrive early on weekends, as parking fills up quickly during hot weather.

🏖️ Cool Off at Mooney's Bay

One of Ottawa's most popular summer destinations.

Why locals love it:

• Supervised beach

• Volleyball courts

• Large grassy areas

• Walking paths

• Close to restaurants and cafés

It's a great place to spend an afternoon with friends or family.

🚣 Rent a Kayak or Paddleboard at Dow's Lake

Sometimes the best way to beat the heat is to get out on the water.

At Dow's Lake, you can rent:

• Kayaks

• Canoes

• Paddleboards

• Pedal boats

Afterward, grab lunch or ice cream in nearby Little Italy.

💦 Visit One of Ottawa's Splash Pads

If you have young children, Ottawa has dozens of splash pads across the city.

Some favourites include:

• Mooney's Bay

• Lansdowne Park

• Millennium Park (Orléans)

• Walter Baker Park (Barrhaven)

• Jules Morin Park (Kanata)

They're free and perfect for cooling off.

🌳 Walk Through the Dominion Arboretum

Not every summer activity has to involve water.

The Dominion Arboretum offers:

• Mature shade trees

• River views

• Beautiful gardens

• Quiet walking trails

Early mornings and evenings are especially enjoyable during hot weather.

❄️ Escape into Ottawa's Museums

Need a break from the heat?

Ottawa's museums offer a cool, air-conditioned escape.

Great options include:

• Canadian Museum of Nature

• National Gallery of Canada

• Canadian War Museum

• Canadian Museum of History

• Canada Science and Technology Museum

You'll stay cool while exploring some of Canada's best cultural attractions.

🍦 Grab Some Ice Cream

Few things beat Ottawa heat like a cold treat.

Some local favourites include:

• Merry Dairy

• Moo Shu Ice Cream

• Carp Custom Creamery

• Lois 'N' Frima's

• Stella Luna Gelato Café

Whether you prefer classic soft serve or handcrafted gelato, Ottawa has plenty of options.

🚴 Ride the Ottawa River Pathway

If you're cycling, choose shaded routes whenever possible.

The Ottawa River Pathway provides:

• River breezes

• Scenic views

• Plenty of shaded sections

• Stops for water and snacks

Try riding in the morning or later in the evening to avoid peak heat.

🌅 Take an Evening Walk Instead

When daytime temperatures soar, simply shift your plans.

Some beautiful evening walks include:

• Major's Hill Park

• Rideau Canal

• Westboro Beach

• Andrew Haydon Park

• Hogs Back Falls

You'll enjoy cooler temperatures and some incredible sunset views.

☕ Work From an Air-Conditioned Café

If you work remotely, consider leaving the house for a few hours.

Popular cafés include:

• Happy Goat Coffee

• Bridgehead

• Equator Coffee

• Little Victories Coffee

• Arlington Five

You'll stay productive without overworking your home's air conditioning.

🛍️ Spend Time Indoors

When temperatures become extreme, there's nothing wrong with enjoying a little air conditioning.

Shopping centres like:

• Rideau Centre

• Bayshore Shopping Centre

• Place d'Orléans

• Tanger Outlets (covered indoor stores available)

offer a comfortable place to escape the afternoon heat.

💧 Stay Hydrated

One of the easiest ways to prevent heat-related illness is to drink water regularly.

Tips include:

• Carry a reusable water bottle.

• Drink before you feel thirsty.

• Avoid too much caffeine or alcohol when spending long hours outdoors.

• Refill your bottle at public fountains around the city.

🏡 Keep Your Home Cooler

The summer heat doesn't stop at your front door.

A few simple steps can help keep your home comfortable:

• Close blinds during the afternoon.

• Use ceiling fans to circulate air.

• Open windows overnight when temperatures drop.

• Change your furnace/AC filter regularly.

• Avoid using the oven during peak heat.

Small changes can make a noticeable difference.

🐶 Don't Forget Your Pets

Hot pavement can burn your dog's paws in seconds.

During heat waves:

• Walk early in the morning or later in the evening.

• Bring water on every walk.

• Never leave pets in a parked vehicle.

• Check pavement with your hand before walking.

Your furry friends will appreciate it.

🌡️ Know the Signs of Heat Exhaustion

Watch for symptoms such as:

• Dizziness

• Heavy sweating

• Nausea

• Muscle cramps

• Headache

• Fatigue

If symptoms worsen or someone becomes confused or loses consciousness, seek medical attention immediately.

My Favourite Ways to Beat the Heat

If you asked me how I'd spend a hot Ottawa weekend, it would look something like this:

Morning: Walk through the Dominion Arboretum before the heat sets in.

Afternoon: Head to Petrie Island for a swim or rent a paddleboard at Dow's Lake.

Evening: Dinner on a patio in Little Italy followed by ice cream from Stella Luna and a sunset walk along the Rideau Canal.

It's a simple way to enjoy summer while staying as comfortable as possible.

Frequently Asked Questions

What is the best beach in Ottawa?

Petrie Island and Mooney's Bay are two of Ottawa's most popular beaches, offering swimming, picnic areas, and family-friendly amenities.

Where can I cool off indoors?

Ottawa's museums, shopping centres, libraries, and cafés all provide excellent air-conditioned spaces during extreme heat.

Are Ottawa splash pads free?

Yes. The City of Ottawa operates dozens of free splash pads throughout the summer.

What are the best evening walks in Ottawa?

The Rideau Canal, Major's Hill Park, Westboro Beach, Andrew Haydon Park, and the Dominion Arboretum are all beautiful options.

How can I keep my house cool without running the air conditioner all day?

Close blinds during the hottest part of the day, use fans, open windows overnight, and limit heat-generating appliances like ovens and dryers.

Is Ottawa humidity really that bad?

It can be. While temperatures may reach 30°C, the humidex often makes it feel much hotter, especially in July and August.

Final Thoughts

Summer is one of the best times to enjoy everything Ottawa has to offer—but it's important to respect the heat. Whether you're spending the day at Petrie Island, exploring an air-conditioned museum, paddling across Dow's Lake, or relaxing under the shade of the Dominion Arboretum, there are plenty of ways to stay comfortable during Ottawa's hottest days.

And if you're staying home, a little preventative maintenance—like keeping your air conditioner serviced, closing your blinds, and staying hydrated—can go a long way.

Stay safe, stay cool, and enjoy another great Ottawa summer.