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Mexico City has a reputation for eternal spring, and it is broadly deserved. Sitting high on a plateau, it avoids both the humidity of the coasts and any real winter. What it does have is a distinct wet season, and that is the thing worth planning around.
Here is what each part of the year is actually like, and which months suit which kind of trip.
The short answer
- Best overall: March to May, warm and dry, though April and May are the haziest months.
- Best value: the wet season, June to September, when rain is predictable and afternoon-shaped.
- Most atmospheric: late October and early November for Día de Muertos.
- Clearest skies: November to February, with cold mornings and bright days.
The dry season: November to April
This is the reliable half of the year. Days are mild to warm and overwhelmingly sunny, and rain is rare enough that you can plan outdoor days without a fallback.
The catch is the temperature swing. At this altitude, mornings and evenings in December and January are genuinely cold, and a lot of buildings have no heating at all because they are designed for the average rather than the extremes. Visitors regularly underpack for this.
By March and April the days warm up considerably, and late spring is the warmest stretch of the year before the rains arrive.
The wet season: May to October
Rain in Mexico City is not the all-day drizzle that the phrase “rainy season” suggests to northern Europeans. It is typically a heavy, dramatic downpour in the late afternoon or evening, often over within an hour or two, leaving the mornings clear.
That makes it far more workable than it sounds. Do your outdoor sightseeing in the morning, plan museums or a long lunch for around four in the afternoon, and carry a light waterproof.
The rain also washes the air, so the wet season has some of the clearest days of the year, and the surrounding volcanoes are visible more often than in the hazy pre-rain months. Flooding can disrupt traffic briefly, which is the genuine downside.
Check rates across seasons
Día de Muertos and Semana Santa both push prices up sharply. Compare a few dates before fixing your trip:
Month by month
January and February
Bright, dry and clear, with cold mornings and pleasant afternoons. Quiet after the New Year rush and good value. Bring a proper jacket for the evenings and check whether your accommodation has heating.
March and April
Arguably the best weather of the year: warm, dry and comfortable. The jacaranda trees flower in spring and turn whole avenues purple, which is a genuine reason to come at this time. Semana Santa falls in this window and sends prices up while emptying the city of locals.
May
The hottest month, with the first storms usually arriving late in it. Air quality is often at its worst just before the rains break.
June to August
Warm mornings, reliable afternoon storms, green surroundings and noticeably fewer visitors. Good value, and easier than its reputation if you plan around the afternoon.
September
The wettest month, and also the most patriotic: Independence Day in mid-September fills the Zócalo and is worth timing a trip around if you like a crowd.
October and November
The rains taper off and the weather settles. Día de Muertos at the start of November is the city’s signature event, with altars, parades and a great deal of marigold. Book accommodation months ahead for this, not weeks.
December
Cool, dry and festive, with decorations across the Centro and the Guadalupe pilgrimage in mid-December drawing enormous numbers. Christmas and New Year are busy and priced accordingly.
What to pack, whenever you go
Layers, always. The gap between a sunny midday and a shaded street at eight in the evening is larger than the daily forecast suggests, and it catches people out year-round. Add a compact waterproof between May and October, strong sun protection in every month because of the altitude, and comfortable shoes for a city where walking is the main way you will see it.
Frequently asked questions
Is the rainy season a bad time to visit?
No. Rain is concentrated in the afternoon and evening, and mornings are usually clear. You get lower prices, fewer visitors and greener surroundings in exchange for some scheduling discipline.
When is Día de Muertos exactly?
The main days are the first two of November, with associated events and parades spread across the surrounding week. Exact parade dates shift year to year, so check the city’s official listings before booking flights.
Does the altitude affect the weather much?
Considerably. It keeps the city far cooler than its latitude implies, makes the sun stronger, and creates the wide day-to-night temperature swing that defines the climate here.
Which month has the clearest views of the volcanoes?
Generally the wet season mornings and the weeks just after the rains end, because the rain clears the air. The pre-rain months of March to May are the haziest.
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