MERIDA · SEPTEMBER · YUCATAN
Merida in September averages a high of 93.9°F and a low of 70.3°F, with measurable rain on 14.2 days. The Yucatan capital was founded in 1542 on top of the Maya city of T’ho, and its cathedral, its museum and its main avenue all stay open through the wet months.
September also falls on the hurricane calendar. The Atlantic season runs June 1 to November 30 and peaks around September 10, with most activity between mid-August and mid-October. That shapes how you book more than how you pack.
THE MONTH AT A GLANCE · MERIDA IN SEPTEMBER
Expect highs near 93.9°F, rain on 14.2 days and the hurricane season’s peak: go if you can live with heat and flexible plans, and consider October if you can’t.
AVERAGE HIGH 93.9°F · 14.2 RAIN DAYS · HURRICANE PEAK AROUND SEPT 10
Go for: a city that stays fully open in the low season, with the Gran Museo del Mundo Maya, the 1598 cathedral and Paseo de Montejo all on their normal schedules.
Think twice before: booking non-refundable. September sits on the peak of the Atlantic hurricane season, and rain falls on about every second day.
Climate: SMN (CONAGUA) station 31097, 1991-2020 normals · Daylight: sunrise-sunset.org · Hurricanes: NOAA · checked Sep 2026
On this page
- Merida weather in SeptemberHighs, lows, rain days and daylight
- How warm is Merida in September?Day and night temperatures and what to wear
- How busy is Merida in September?Hurricane peak, booking and the lodging tax
- Things to do in Merida in SeptemberThe cathedral, Paseo de Montejo and the Gran Museo del Mundo Maya
- Merida itinerary for SeptemberTwo days built around sunrise, sunset and the Tuesday closure
- Merida in September vs August and OctoberHighs, lows, inches of rain and rain days for the three months
- Is September a good time to visit Merida?Who should go and who should wait for October
Booking and packing basics live in our general travel guides, and the question of which destination suits which month sits in our where-to-go-by-month section.
Merida weather in September
| Measure | September in Merida |
|---|---|
| Average high | 93.9°F |
| Average low | 70.3°F |
| Precipitation | 6.89 inches |
| Days with measurable rain | 14.2 |
| Daylight on Sept 15 | About 12 h 17 min |
Every figure here comes from Mexico’s national weather service, the Servicio Meteorologico Nacional (CONAGUA), which measures at station 31097 in the city itself. The 1991-2020 normals for September are an average high of 93.9°F, an average low of 70.3°F and 6.89 inches of precipitation. That is a thermometer in Merida, not a grid-cell model. Progreso, 20 miles north on the Gulf coast, runs a few degrees cooler with the sea breeze.
Measurable rain falls on 14.2 days of an average September, counted by the same service (its threshold for a rain day is not published on the station sheet). That is some rain roughly every second day, adding up to 6.89 inches for the month. Keep one indoor anchor per day. The Gran Museo del Mundo Maya is open 9:00 a.m. to 5:00 p.m., Wednesday to Monday.
Afternoons average 93.9°F and nights 70.3°F, a swing of 23.6 degrees. Pack breathable clothes and a hat for the afternoon, one light layer for cooler indoor rooms, and a compact umbrella or rain shell for the wet half of the days.
On September 15 the day lasts about 12 hours 17 minutes. Converted to Merida local time, the sun rises around 5:44 a.m. and sets around 6:02 p.m. After that hour the streets are lit by lamps, so plan outdoor sightseeing for the morning.
How warm is Merida in September?
The month’s average high is 93.9°F and its average low is 70.3°F, both measured at the SMN station in the city. Merida sits inland, so there is no sea to read here. The Gulf coast at Progreso, 20 miles north, runs a few degrees cooler with the breeze, but we found no sea-temperature series for it and print none.
In practice the morning starts close to that 70.3°F low, mild enough for a walk along Paseo de Montejo in a light shirt. By the afternoon the average has climbed to 93.9°F, which is the hour for the museum, a long lunch or a hotel pool. Sunscreen and water go in the bag either way.
We found no count of frost nights for Merida, and with an average low of 70.3°F in September the question hardly arises. The cold-weather layer you might pack for a northern city stays home.
How busy is Merida in September? Crowds and prices
We found no occupancy series and no monthly hotel-rate data for Merida, so we crown no month expensive or cheap. What the calendar does say is that the Atlantic hurricane season runs June 1 to November 30, peaking around September 10, with most activity between mid-August and mid-October.
We have no verified lead time for Merida hotels, so no number of weeks appears here. Because September sits inside the hurricane window, choose rates with free cancellation and check the NOAA National Hurricane Center outlook before you fly.
We could not verify the lodging-tax rate for Merida, so we give no percentage. Ask the hotel whether the quoted rate includes tax before you confirm.
If you pay more anywhere, pay for the room. Afternoons that average 93.9°F are spent indoors as much as out, and reliable air conditioning matters more than a view.
Things to do in Merida in September
September rewards a split day: outdoors at first light, when the air is close to the 70.3°F average low, and indoors through the afternoon heat. Nothing in our sources ties a Merida event to September, so we list none.
The Cathedral of San Ildefonso dates to 1598 and was the first cathedral built in continental North America. Paseo de Montejo, the city’s signature avenue, is lined with early-20th-century mansions and original sculpture, among them Las Casas Gemelas (the Twin Houses), completed in 1911. The Gran Museo del Mundo Maya is open Wednesday to Monday, 9:00 a.m. to 5:00 p.m., and closed on Tuesdays.
Stone and sculpture do not change with the season, but the air does. With highs of 93.9°F and rain on 14.2 days, the avenue is a morning or early-evening walk, and the museum is the place to spend the hottest hours or an afternoon downpour.
We could not verify admission prices or which of these charge at all, so no fee and no free label is printed. Paseo de Montejo is an avenue and walking it needs no ticket. For the cathedral and the museum, check the operator before you go.
Merida itinerary for September
Day one, any day except Tuesday. Start on Paseo de Montejo at first light, around 5:44 a.m., and reach the Twin Houses of 1911 while it is still cool. Walk on to the Cathedral of San Ildefonso (1598). Spend the hot middle of the day inside the Gran Museo del Mundo Maya, which opens at 9:00 a.m. and closes at 5:00 p.m. Sunset falls around 6:02 p.m., so dinner is the first meal outdoors again.
Day two, and the rain plan. Devote the morning to the old center, built from 1542 over T’ho, and use the museum as the fallback if a downpour arrives, since measurable rain falls on 14.2 days of the month. If day two lands on a Tuesday, swap it with day one: the museum is closed that day.
Merida in September vs August and October
| Measure | August | September | October |
|---|---|---|---|
| Average high | 94.8°F | 93.9°F | 90.7°F |
| Average low | 70.0°F | 70.3°F | 68.2°F |
| Precipitation | 5.72 inches | 6.89 inches | 5.37 inches |
| Days with measurable rain | 12.9 | 14.2 | 12.2 |
All three columns come from the same SMN station and the same 1991-2020 period. September is the wettest of the three at 6.89 inches, 1.17 inches more than August and 1.52 inches more than October. Its 14.2 rain days beat August by 1.3 days and October by 2.0 days. The average high is 0.9 degrees below August’s and 3.2 degrees above October’s. We read no sea-temperature series for the coast, so no sea comparison is made.
Moving four weeks later to October gets you highs 3.2 degrees lower, 2.0 fewer rain days and 1.52 inches less rain. The hurricane season does not end with September, though: it runs to November 30, with most activity through mid-October. We have no price series for either month, so we cannot say what you would save or lose on the room.
Is September a good time to visit Merida?
Yes, for travelers who accept 93.9°F afternoons, rain on 14.2 days and refundable bookings. Safety is not the obstacle: as of the U.S. State Department’s Mexico advisory dated May 29, 2026, the State of Yucatan is at Level 1, “Exercise normal precautions,” and Merida was certified an International Safe Community by Sweden’s Karolinska Institute in 2015. No for anyone who needs a fixed, non-refundable itinerary or dislikes sticky afternoons.
If the answer is no, choose October. Its average high is 90.7°F, its rain is 5.37 inches, and its 12.2 rain days are the fewest of the three months compared. The hurricane season still runs on, so the refundable-booking advice holds.
What the month brings that is its own is a fully open city at its rainiest of the three months compared, with 6.89 inches falling across 14.2 days, and about 12 hours 17 minutes of daylight on September 15 to work with.
The last word
Decide on the booking terms before anything else. Merida International Airport (MID) sits less than 5 kilometers southwest of downtown, so an arrival moved by a storm week costs little ground time. Put the museum on a day that is not Tuesday, and spend the first light hour on Paseo de Montejo before the average high of 93.9°F arrives.
Sources & data for this guide
- September, August and October normals (highs, lows, precipitation, rain days) · Servicio Meteorologico Nacional (CONAGUA), 1991-2020, station 31097 Merida (Conagua) · checked Sep 30, 2026
- Daylight, sunrise and sunset on September 15, converted to Merida local time · sunrise-sunset.org · checked Sep 30, 2026
- Hurricane season dates and September 10 peak · NOAA National Hurricane Center · checked Sep 30, 2026
- Safety advisory (Level 1, May 29, 2026) · U.S. Department of State, travel.state.gov · checked Sep 30, 2026
- Museum hours · Gran Museo del Mundo Maya (operator) · checked Sep 30, 2026
- Founding, cathedral, Paseo de Montejo and safety certification · Wikipedia, Merida, Yucatan (secondary source) · checked Sep 30, 2026
- Airport location · Wikipedia, Manuel Crescencio Rejon International Airport (secondary source) · checked Sep 30, 2026
- We found no hotel-rate, occupancy, lodging-tax, admission-price or September event data, so none is given · check operators when you book.