Best Time to Visit Cancun

The best time to visit Cancun is February to April, when Mexico's weather service shows the least rain, 1.5 to 2.3 inches a month, and average highs of 86 to 92 F. The worst weeks for weather are in September and October, the wettest months, which also sit on the peak of the Atlantic hurricane season. We read the service's normals and NOAA's hurricane page on 15 October 2026.

Month by month

Note: Mexico's national weather service, the SMN, publishes 1991 to 2020 climate normals for each station. We read the file for the Cancun station (23155, altitude 9 m) on smn.conagua.gob.mx on 15 Oct 2026. The file is dated 9 Oct 2026 and gives Celsius and millimetres. We converted to Fahrenheit and inches and rounded. "Rain days" is the service's "number of days with rain" line, and the file does not define a threshold

The year averages 90 F for the high, 73 F for the low and about 54 inches of rain. It is one station, so a beach on the hotel zone can differ. The table gives averages over 30 years. Any single week can be hotter, wetter or cooler.

Rainy and hurricane season

The table shows the rain. June, September and October are the wettest months, and October alone brings 10.9 inches. By our arithmetic from the table, June to October holds about 59 percent of the year's rain, and September and October together about 33 percent. July is a dip, at 2.6 inches.

Note: "The official hurricane season for the Atlantic basin is from June 1 to November 30." "The peak of the Atlantic hurricane season is September 10, with most activity occurring between mid-August and mid-October." The page says the Atlantic basin includes the Caribbean Sea. It has no figures for Cancun or Quintana Roo (NOAA National Hurricane Center, climatology page, nhc.noaa.gov/climo, read 15 Oct 2026)

So the weeks that mix the heaviest rain with the busiest storm period are from mid-August to mid-October. NOAA does not say how often a storm hits Cancun, and we have no official source for that number. If you travel in that window, ask about the cancellation rules of your hotel and airline before you pay, and watch the National Hurricane Center.

Sargassum

Sargassum is the brown seaweed that washes onto Caribbean beaches. We found no official page that names the months of a sargassum season. That part is not confirmed.

Note: The Instituto Oceanografico del Golfo y Mar Caribe, part of the Mexican navy (SEMAR), issues a daily bulletin. Its bulletin no. 1435 of 17 May 2026 reports a total of 86,201 tonnes of sargassum in the Mexican Caribbean on 16 May, and its traffic light for that day reads "EXCESIVO" with the note "Maximo historico". It lists a 12 tonne cluster with a chance of reaching Cancun and Isla Mujeres (SEMAR bulletin PDF at diredimoat.semar.gob.mx, read 15 Oct 2026). The bulletin does not explain how "Maximo historico" is measured

Note: The same institute's bulletin no. 1584 of 14 October 2026 reports 6,019 tonnes in the Mexican Caribbean on 13 October, and its traffic light reads "BAJO", low. It lists a 10 tonne cluster with a chance of reaching Isla Mujeres and Isla Blanca. The bulletin says the traffic light weighs currents, winds and daily beach photos from the state's federal beach zone office, ZOFEMAT (SEMAR bulletin PDF, read 15 Oct 2026)

So in 2026 the coast went from the top level in May to low in October. Two readings do not show a season, and we did not read the other months. For your own dates, open the newest PDF on SEMAR's daily sargassum bulletin page (diredimoat.semar.gob.mx/OpSargazo/SargazoBoletinDiario.html).

Events and holidays

We found no official 2027 event calendar for Cancun that we could read. The city site was not reachable when we tried, so any festival date for 2027 is not confirmed.

Holiday dates we can work out from the calendar:

Easter is the first Sunday after the first full moon on or after the spring equinox. The 2027 date, 28 March, is our calculation. We did not check it against an official calendar. Mexico City's tourism site says most universities take something like a spring break that week. We found no official page on crowds, hotel occupancy or prices for these dates, and we give no price bands.

The worst time and why

For weather, the worst time is September and October. They are the two wettest months in the table, with 14 to 16 rain days, and they sit on NOAA's peak for the Atlantic season. For sargassum, we cannot name a worst month from an official source. Of the two bulletins we read, 17 May 2026 had the top rating and 14 October 2026 the low one.

For heat, July and August have the highest averages, at 95 F, with lows of 77 F. If heat bothers you, February to April is cooler.

Safety and entry

The State Department lists Quintana Roo, where Cancun is, at Level 2, "Exercise increased caution", in its Mexico advisory of 29 May 2026. We read it on 14 October 2026. See our page on whether Cancun is safe for the wording on night, taxis and ATMs. A flight from the US needs a passport book.

If you live in the US but are not a US citizen

Indian, Filipino and Chinese passport holders need a Mexican visa unless they hold a valid US visa or a valid US green card. INM lists India, the Philippines and China as countries whose nationals need a Mexican visa. Mexico's consulates in the US say a valid US visa or green card replaces it.

Note: Consulado de Mexico en Washington: holders of a valid, unexpired US visa, or of a valid US resident card, need no Mexican visa for tourism, business or transit. Show it with your passport, and both must stay valid for the whole stay. "All EAD cards, I-797 A Forms, Advance Parole Forms, I-20 OR DS-2019 are not accepted to enter Mexico." If your US visa or card has expired, you must apply for a Mexican visa (consulmex Washington, English visa page, read 14 Oct 2026 for our Cancun safety page, not re-read today)

Note: INM's list of countries whose nationals need a visa includes China, Filipinas and India. INM dates the page 1 March 2024 (INM, read for our Mexico entry page on 12 Oct 2026, not re-read)

Which US visa types count, and whether the visa must allow multiple entries, is not confirmed. Ask the consulate that serves your state. Coming back to the US is a separate check.

Note: Green card holders: to re-enter after a trip abroad, present a valid, unexpired green card. A short trip usually does not affect permanent resident status (USCIS, "International travel as a permanent resident", last reviewed 12 Sep 2025, read 14 Oct 2026 for our Cancun safety page, not re-read)

Note: Visa holders: if your US visa has expired, a trip of 30 days or less only to Mexico or Canada can still let you re-enter on your valid I-94, under the "automatic revalidation" rule. You need a valid passport and must not have applied for a new US visa while abroad. The rule does not cover nationals of countries the State Department lists as supporting terrorism (22 CFR 41.112(d), eCFR, read 14 Oct 2026 for our Cancun safety page, not re-read)

If your visa has expired or your status is pending, ask your employer's immigration lawyer or your school's international office before you book.

What we checked and what can change

Read on 15 October 2026: the SMN 1991 to 2020 normals file for the Cancun station (23155, issued 9 October 2026) on smn.conagua.gob.mx; NOAA's National Hurricane Center climatology page (nhc.noaa.gov/climo); SEMAR's daily sargassum bulletins no. 1435 of 17 May 2026 and no. 1584 of 14 October 2026 (diredimoat.semar.gob.mx); Mexico City's tourism page "Best Seasons to Visit Mexico City" for the Holy Week line. The Atlantic season dates and the bulletin are official. The Holy Week dates are our own calculation from the Easter date. The State Department advisory, the Washington consulate page, INM, USCIS and eCFR text are carried from our Cancun safety page, read on 14 October 2026 and 12 October 2026, and not re-read today.

Not confirmed: the months of a sargassum season, sargassum levels on any day except 16 May and 13 October 2026, 2027 event dates, crowd levels, hotel and flight prices for any month, the odds of a storm reaching Cancun, and which US visa types count for Mexican entry. Weather figures are 30 year averages for one station. A forecast and the live advisory matter more than an average. We did not travel to Cancun for this page. We have no hero photo for this page yet.