Mexico City in May: Weather & What to Do

Page Overview

Dreaming of warm sunny days and neighborhoods full of life with people walking and dining outside?

If you’re considering Mexico City in May, you’re in for a treat!

With sunshine-filled afternoons, little to no rain, and fewer crowds, May is a great time to visit.

Bring your summer clothes because days spent exploring under the sun can be hot!

I’ve been living in Mexico City since 2018, so I know exactly what to expect in May.

I’ll share everything you need to know—what to pack, how to dress, and key weather tips—so you can explore with confidence!

Weather in Mexico City in May

May is one of the hottest months of the year in Mexico City, with temperatures peaking before the rainy season begins in June.

Without the afternoon and evening rains to cool things down, warm temperatures linger well into the night.

Most apartment buildings and small B&Bs don’t have A/C, so nights can feel stuffy and uncomfortable if you don’t have a fan or open a window.

Even though our apartment stays cool most of the year, it gets warm in the spring and I can’t sleep without a fan.

Days are sunny, dry, and borderline hot. To beat the afternoon heat, I recommend planning outdoor activities for the morning and evenings.

Average Temperatures in Mexico City in May

Chart showing Mexico City's average temperatures by month. The average high temperatures are represented by red bars, and the average low temperatures by green bars. January through December show consistent high temperatures around 70-75°F, while low temperatures range from about 40-55°F. — *Source: NOAA*

Average highs in May reach 81°F (27°C), while lows drop to around 53°F (12°C).

It doesn’t feel overwhelmingly hot unless you’re directly in the sun, but in areas with little shade—like Teotihuacán and the Historic Center—the sun can be brutal.

At night, temperatures don’t always cool down indoors. When we go to bed, our thermostat often reads 80°F (27°C) or close to it, which isn’t exactly ideal for sleeping.

We can’t open the windows because of mosquitoes, so we always use a fan.

You might want to check with your accommodation to see if they provide a fan. It can make a huge difference in getting a comfortable night’s sleep.

Average Rainfall in Mexico City in May

Chart depicting the average number of rainy days in Mexico City by month. The data indicates that July and August have the highest number of rainy days (around 18-20 days), while January, February, and December have the fewest (around 1-2 days). — *Source: Weatherandclimate.com*

May usually brings a few rainy days, but the full-on rainy season doesn’t start until June.

On average, Mexico City sees around 10 rainy days in May, though this can vary.

However, this year, the rainy season got started at the end of May, whereas it didn’t’ start until the end of June in 2024.

That said, don’t expect the daily downpours of summer. Rain in May is usually sporadic and short-lived, rather than the heavy evening storms common later in the season.

If you want to be prepared, bring an umbrella just in case, but chances are you won’t need it often.

Average Sunshine in Mexico City in May

Chart showing the average number of hours of sunshine in Mexico City by month. January through December show variations in sunshine hours, with the highest in March and April (around 250 hours) and the lowest in September (about 150 hours). — *Source: Weatherandclimate.com*

May is the last month of abundant sunshine before the rainy season begins.

Days are long, bright, and mostly cloud-free, making it one of the best months for outdoor exploring.

But with all that sun, it’s easy to get burned quickly, especially in high-exposure areas like Teotihuacán or Chapultepec Park.

Be sure to bring sunscreen, a hat, and sunglasses—you’ll definitely need them.

The sun in Mexico City is strong year-round, but in May, with no afternoon storms to cool things down, it can feel especially intense.

Pollution in Mexico City in May

Aerial view of a mountainous landscape with scattered buildings and winding roads, seen from an airplane window. The aircraft wing is prominently visible in the foreground, with a clear blue sky and faint smog layering the horizon in the distance.

Pollution can be noticeably high in May since the rainy season hasn’t started yet.

Without regular showers to clear out smog and bring in fresh air, the air can feel stagnant, especially in the afternoons.

Another factor is wildfire season.

May is one of the driest months of the year, and after nearly six months without steady rain, fires often break out in the forests surrounding the city. This can occasionally cause hazy skies and a smoky smell.

If you have allergies or a sensitive respiratory system, you might feel the effects more this time of year. With lots of flowers in bloom, pollen levels can also be high.

I’ve been living here for seven years, and I’ve never personally had issues with breathing or respiratory irritation, but everyone reacts differently.

If you’re sensitive, consider wearing a mask just in case, especially on high-pollution days.

What to Wear in Mexico City in May

A woman wearing a red floral off-the-shoulder top smiles while seated at a restaurant table with a menu in front of her. The setting features an open kitchen with a chef in the background and a stylish modern interior with blue and white panels.

Dress for warm weather in May.

Whenever my dog and I go for our afternoon walks this time of year, I usually like to wear tank tops to stay cool.

I still am comfortable wearing jeans even on the hottest days, but sundresses, flowy skirts, and shorts are also great.

Mexico City is an international city but most locals tend to dress modestly and I feel most comfortable when I do too.

Bring a light jacket for the evenings since it can be cooler at night.

Essential Clothing Items for May

Tank Tops & Short Sleeve Tops – the days are warm and at times hot, bring lightweight tops to stay cool.
Dresses & Skirts – Sundresses and flowy skirts are great for exploring since they’re light, breezy, and stylish enough for both casual outings and nicer dinners.
Jean & Pants – Even on warm days, jeans and lightweight pants are comfortable and practical. They also transition well for evening plans when temperatures drop slightly.
Light Jacket – Bring a light jacket just in case you get chilly at night.
Sun Protection – The sun is strong here and you’ll get burnt faster than you’d think. Bring sunglasses, a hat, and sunscreen to protect your skin and stay comfortable while sightseeing.

3 Things to Do in May in Mexico City

1. Take a Dip in a Rooftop Pool

With Mexico City’s warm May afternoons, a rooftop pool is the perfect way to cool off while enjoying panoramic views.

Some of the best pools open to non-hotel guests where you can buy a day pass include Downtown Mexico in the Centro Histórico, Hotel Carlota in Cuauhtémoc, or Habitat in Polanco.

Jorge gifted me a day pass to the latter for my birthday and it was such a fun and luxurious experience.

If you’re staying in a hotel with a pool, take advantage of the sunshine and sip a cocktail while soaking in the city skyline.

2. Float through Xochimilco’s Canals

The image features a young woman sitting on a brightly colored boat with red and yellow stripes, enjoying a serene moment. She is surrounded by water and other decorated boats, suggesting a vibrant and lively atmosphere, likely in the Xochimilco canals in Mexico City. The background includes lush greenery and other people engaging in similar boat activities. — Me in Xochimilco in December.

May’s hot afternoons make a boat ride through Xochimilco a perfect way to beat the spring heat and stay cool on the water.

I’ve gone several times with big groups of friends, usually to celebrate birthdays or a despedida (going-away party), and it’s always a blast piling onto a colorful trajinera with plenty of food, drinks, and music!

Xochimilco is definitely best enjoyed in a group.

If you’re traveling solo or with a partner, I highly recommend booking a tour that connects you with other travelers—it’s way more fun when you have a full boat, lively conversation, and maybe even a mariachi band stopping by to play a song or two.

For a more local experience, head out on a weekend when the canals are buzzing with energy, or go on a weekday morning for a quieter, more laid-back ride.

3. Hike in Desierto de los Leones

A fluffy white and tan dog walks alone on a misty forest trail, surrounded by lush green vegetation and tall trees. The dirt path is damp and scattered with twigs, adding to the serene and slightly eerie atmosphere.

If you’re looking to escape the city heat and get some fresh mountain air, Desierto de los Leones is the perfect spot for a cool, shaded hike in May.

Despite its name, “Desert of the Lions” is actually a national park with lush forest less than an hour outside the city, filled with pine trees, misty trails, and hidden ruins.

It’s noticeably cooler than the city, making it an ideal retreat on a hot afternoon.

We love going on the weekends and taking our dog Colima so that she can run freely in the forest.

There are multiple trails ranging from easy walks to more challenging hikes, and you’ll often see locals picnicking, biking along the paths, or walking with their dogs.

If you’re not renting a car, you can get here with a tour or by Uber, but signal can be weak in the park, so I would arrange a return ride ahead of time.

Two of my favorite places to hike in the national forest are Los Dinamos and El Ex Convento.

Mexican Holidays in May

Labor Day (Día del Trabajo) – May 1

Labor Day is a national public holiday in Mexico, so many businesses, banks, and government offices will be closed. If you’re planning to visit major attractions that day, check ahead to see if they’ll be open and expect a quieter city overall as many locals take the day off.

Do I need a hotel with A/C?

Yes, you might need A/C if you’re an American that loves the comfort of a climate-controlled room and can’t sleep without it. It’s not humid, but it does get hot. May is one of the warmest months of the year, and our bedroom is normally around 73-75ºF at night this time of year. We sleep just fine with a fan, but I know everyone is different.

Is Cinco de Mayo a big deal in Mexico City?

No, Cinco de Mayo is not widely celebrated in Mexico City. The holiday is more significant in Puebla, where the battle it commemorates took place. In Mexico City, there are no major celebrations for Cinco de Mayo.

Is May a good time to visit Mexico City?

Yes, especially if you like warm and sunny days! It’s the last dry month before the rainy season starts, making it great for outdoor activities. Just be prepared for the heat, especially in areas with little shade.

Conclusion

May is a fantastic time to visit Mexico City, with warm, sunny days and fewer crowds.

While the heat can feel intense in the afternoons, it’s still a great month for exploring the city’s parks, rooftops, and nearby day trips before the rainy season arrives.

Just be prepared with light clothing, sun protection, and a fan if your accommodation doesn’t have A/C.

If you’re wondering how to make the most of your time in Mexico City, one of the best ways to experience the city is by exploring its coolest neighborhoods. Check out my things to do list for Roma Norte, one of the most vibrant and walkable areas, filled with great restaurants, parks, and local spots you won’t want to miss!