Cancún climate

Name: Cancún
Address: MX

Cancún is warmest in August, with average highs of 30 °C, and coldest in January, when nights average 22 °C. September is the wettest month (205 mm) and March the driest (33 mm). Figures are 1991–2020 climate normals.

Across a full year Cancún averages 1,217 mm of rain and 332 days above 25 °C.

Mexico · population 888,797 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 30 °C
Coldest month January 22 °C
Driest month March 33 mm
Wettest month September 205 mm
Least cloud March 38 % cloud
Hottest on record June 33 °C
Coldest on record December 14 °C
Warmest sea September 29 °C

What to expectCancún through the year

Cancún has a clear annual cycle: average daily highs run from 25 °C in January to 30 °C in August, a swing of 4.3 °C in mean temperature across the year.

Counted across a normal year, 332 days a year reach 25 °C, 47 of them reach 30 °C. The warmest reading in the 1991–2020 record is 33 °C, in June.

Rain is strongly seasonal. September averages 205 mm against 33 mm in March — 6.3 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Cancún is warmest in September at 29 °C and coldest in February at 26 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	25.4 °C	61 mm	48 %
February	26.1 °C	36 mm	38 %
March	26.9 °C	33 mm	38 %
April	28.3 °C	38 mm	39 %
May	29.1 °C	91 mm	45 %
June	29.2 °C	167 mm	60 %
July	29.8 °C	112 mm	51 %
August	29.9 °C	146 mm	54 %
September	29.3 °C	205 mm	62 %
October	28.2 °C	193 mm	58 %
November	26.8 °C	81 mm	48 %
December	26.0 °C	53 mm	46 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	25.4 °C	22.3 °C	23.6 °C	29.7 °C	15.6 °C	20	0
February	26.1 °C	22.8 °C	24.2 °C	30.3 °C	16.4 °C	22	0
March	26.9 °C	23.3 °C	24.8 °C	30.3 °C	15.4 °C	27	0
April	28.3 °C	24.4 °C	26.0 °C	31.9 °C	16.9 °C	29	2
May	29.1 °C	25.3 °C	26.9 °C	32.2 °C	19.5 °C	31	6
June	29.2 °C	25.9 °C	27.3 °C	32.8 °C	22.7 °C	30	5
July	29.8 °C	26.3 °C	27.8 °C	32.5 °C	23.3 °C	31	13
August	29.9 °C	26.4 °C	27.9 °C	32.8 °C	23.6 °C	31	14
September	29.3 °C	25.9 °C	27.4 °C	32.0 °C	22.6 °C	30	7
October	28.2 °C	25.1 °C	26.4 °C	31.8 °C	19.2 °C	31	1
November	26.8 °C	23.9 °C	25.2 °C	30.0 °C	15.2 °C	27	0
December	26.0 °C	23.0 °C	24.3 °C	29.5 °C	14.2 °C	23	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	61 mm	10	11 h/day	48 %	73 %	20 km/h	26.5 °C
February	36 mm	7	11 h/day	38 %	73 %	20 km/h	26.4 °C
March	33 mm	7	12 h/day	38 %	72 %	21 km/h	26.4 °C
April	38 mm	7	13 h/day	39 %	74 %	21 km/h	27.0 °C
May	91 mm	13	13 h/day	45 %	77 %	19 km/h	27.8 °C
June	167 mm	19	13 h/day	60 %	82 %	18 km/h	28.4 °C
July	112 mm	17	13 h/day	51 %	80 %	16 km/h	28.7 °C
August	146 mm	21	13 h/day	54 %	81 %	16 km/h	29.1 °C
September	205 mm	24	12 h/day	62 %	83 %	16 km/h	29.2 °C
October	193 mm	20	12 h/day	58 %	81 %	18 km/h	28.8 °C
November	81 mm	12	11 h/day	48 %	76 %	19 km/h	28.0 °C
December	53 mm	11	11 h/day	46 %	75 %	19 km/h	27.1 °C

How Cancún compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Cancún	30 °C	22 °C	1,217 mm	332
Mérida · Mexico	36 °C	19 °C	704 mm	354
Chetumal · Mexico	31 °C	21 °C	1,240 mm	354
Pinar del Río · Cuba	32 °C	18 °C	1,027 mm	341
Campeche · Mexico	35 °C	21 °C	844 mm	355
Belmopan · Belize	32 °C	20 °C	1,285 mm	343
Havana · Cuba	32 °C	20 °C	801 mm	331

Where Cancún ranks

Ranking	Position	Value
Best beach destinations in the world in April	32nd of 50	91/100

Planning a trip? See the best time to visit Cancún.

QuestionsCommon questions about Cancún’s climate

When is the best time to visit Cancún?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, August is the warmest month and March the driest. The month-by-month table above has the full picture.

How hot does Cancún get?

In August, the warmest month, daily highs average 30 °C. About 47 days a year pass 30 °C. The highest value in the 1991–2020 record is 33 °C.

How cold does it get in winter?

Nights average 22 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Cancún?

September, averaging 205 mm over 24 days with rain. The driest month is March with 33 mm. The year as a whole averages 1,217 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Cancún rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 21.174°, -86.847° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.