And what the weather is actually like — which is not what most people expect

When I first came to Mexico City I packed linen suits. I was coming from San Diego and had recently spent two years in Japan, it was summer, and I was heading somewhere in Latin America — I assumed heat. I arrived to find a city where evenings required a jacket and the office was cold enough that I had to acquire sweaters after the first week.

Mexico City confuses almost everyone on the weather front, and the confusion leads to real packing mistakes in both directions. People arrive in August expecting tropical heat and find afternoon thunderstorms and cool evenings. People arrive in December expecting mild winter and find, if they are from somewhere actually cold, that they have overpacked entirely.

This is what I know after fifteen years of living here.

The Weather — What It Actually Does

Spring — April and May

This is the hot season. The air is dry, the sky is clear, and the temperatures are the warmest of the year. If you want to wear linen in Mexico City, this is the time to do it. It does not last long — typically six to eight weeks — and even then the evenings cool down enough that a light layer is useful once the sun drops.

This year the hot dry season was shorter than usual and the rains came early. Year to year there is variation, and climate change has been extending the hot season in recent years while also making it less predictable. April and May are your best bet for warm dry weather, but double check the Weather app before you pack.

Summer — June through September

The rainy season. This does not mean it rains all day — it means it rains in the afternoon, often suddenly and heavily, and then stops. The mornings are typically clear and pleasant. By mid-afternoon the clouds build and by three or four o’clock it is raining. An hour later it may be over. The evenings are cool.

If you are visiting in summer, pack a light rain jacket and carry a small umbrella. A poncho works. What does not work is assuming the clear morning sky means you will not need one by the time you are walking back from lunch.

The temperatures in summer are mild — warm enough during the day, cool at night. It is not cold, but it is also not tropical.

Fall — October and November

The transition out of rainy season. Generally pleasant, less rain, comfortable temperatures. One of the better times to visit.

Winter — December through February

The cool season. Temperatures in the city typically stay between roughly 8 and 22 degrees Celsius. Evenings and early mornings are genuinely cool — I put on a sweater at 14 degrees, having lived here long enough that my internal thermostat has recalibrated for the temperate climate. I have experienced one day below 10 degrees in fifteen years, and it was highly unusual.

For context: if you are coming from Boston or Chicago or anywhere that has real winters, you will not need a heavy coat. A light jacket and layers will handle anything Mexico City winter throws at you. If you are coming from somewhere tropical — Bangkok, the Caribbean, coastal Mexico — bring layers at any time of year, because even summer evenings can feel cool by that reference point.

The city sits at 2,240 meters above sea level. That altitude is the reason for the temperate climate — we are far south but high up, and the elevation keeps temperatures moderate year-round. It is also why historically most homes here were built without air conditioning or central heating. That is changing, but the city’s basic architecture still reflects the assumption that the weather is manageable without mechanical intervention.

What to Pack

The honest answer for any time of year: layers. A Mexico City day can move through several temperature registers — cool morning, warm midday, cool evening, cold if you are in an air-conditioned office or restaurant. The ability to add and remove a layer is more useful than any single garment.

For spring (April–May)

Light clothing during the day. Linen is appropriate and so are lighter fabrics. Still pack at least one layer for evenings — a light cardigan or jacket that can go in a bag. Sunscreen matters; the UV index at this altitude is higher than coastal cities at similar temperatures.

For summer (June–September)

Layers plus something waterproof or at least water-resistant. A packable rain jacket takes up almost no space and you’ll use it every afternoon. Comfortable walking shoes that can get wet without being ruined. Light clothing for the day, a layer for evenings.

For fall and winter (October–February)

Sweaters, light jackets, layers. Not heavy winter gear unless you are particularly sensitive to cold. Leather boots work well in winter and are common. Slightly heavier fabrics — light wool, denim, knits — are appropriate.

Year-round

Comfortable shoes for walking. This is non-negotiable if you are taking my advice in the getting around post and walking between neighborhoods. The good news: sneakers have become acceptable in social settings post-pandemic and can be paired with skirts and dresses without looking out of place. You do not have to choose between comfortable feet and offending the locals’ fashion sense.

How People Actually Dress Here

Mexico City has a formality standard that surprises most visitors from the United States, and even some from Europe. The gap between how locals dress and how tourists arrive is visible and worth knowing about before you pack.

For work

When I arrived in 2009 the standard in professional environments — law firms, consulting, financial services — was business formal every day. Suits, heels, polished. Post-pandemic, and with increasing US influence on workplace culture, this has relaxed in many places to business casual on most days. But “relaxed” is relative. In professional meetings I still wear heels, formal slacks or a skirt, and a proper blouse. Women in Mexico City dress for work in a way that would register as overdressed in a San Francisco tech office and entirely normal in a London law firm.

The perfume culture is also worth noting briefly: Mexicans wear fragrance more prevalently and more generously than most visitors are used to. Men use hair products — gel is more common here than in most US cities, based on my experience. There is a broader attention to grooming and presentation that is cultural rather than about showing off, and it extends to the sidewalk in front of the house being swept and washed before the day starts. It is its own subject and one worth a separate post eventually.

For lunch and dinner out

If you are going to a restaurant in Polanco, Roma Norte, or Condesa — anywhere in that register — plan to dress. Mexicans routinely go back to the hotel or home to change before heading to dinner. At a Friday lunch at a restaurant like Cuerno or RosaNegra, you will find women with full hair, makeup, jewelry, and dresses. Men in those environments will be in jeans and a good shirt at minimum, often more.

This does not mean you will be turned away in casual clothing. It means you will notice the difference, and if you want to feel appropriate rather than conspicuously touristic, it is worth dressing up more than you might at home — depending on where you’re from, of course!

For markets

The opposite applies. When I go to La Lagunilla — the famous antiques market in the centro, which has everything from genuine antiques to vintage clothing to curiosities, and is worth a dedicated visit despite being a bit of a trek and not the most tourist-friendly part of the city — I wear my most worn-in clothing. No visible brands, no designer pieces, no jewelry beyond the minimal. Nothing that signals money. The same approach applies at Mercado de San Juan, the gourmet market in the Centro Histórico known for exotic ingredients, fresh seafood, imported cheeses, and the kind of produce that chefs come for. The foreigner premium is real at markets where prices are not posted — dressing down is practical, and a bit safer.

For tourist sites

The Anthropology Museum, the Templo Mayor, Chapultepec Castle — comfortable shoes and whatever you are comfortable in. A happy medium. These are places where you will walk a lot on uneven surfaces, and the priority is your feet.

By neighborhood

Polanco is where you find the internationally known designer boutiques and jewelry stores. The aesthetic leans traditionally polished — well-heeled in the literal sense. Roma Norte and Condesa run edgier and more avant-garde — both in what you see on the street and in the boutiques. The Centro is genuinely mixed: there are streets where you would not want to wear anything flashy, and there are restaurants like Arango, next to the Monumento a la Revolución, where you can dress up and not be out of place in their polished art deco interior.

What surprised you most about how people dress here? I am always curious what the adjustment looks like from the outside.