Climate averages 1991–2020

Cozumel weather
in January.

A warm, moderately wet month: the coolest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 25.3°C Daytime mean, January

Average low 23.4°C Night-time mean, January

Rainfall 64 mm 12 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

January is a warm month in Cozumel: daytime highs average 25.3°C and nights cool to about 23.4°C. By daytime temperature it is the coolest month of the year.

Expect about 64 mm of rain on roughly 12 days, which makes January a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 02 min on an average January day.

The nearest other city in this atlas is Playa del Carmen (20 km away). In January its highs average 25.7°C, about as warm as Cozumel, with 55 mm of rain.

Among the 153 cities listed in Mexico, Cozumel ranks joint 35th of 153 for the warmest January highs and 144th of 153 for the driest January (rainfall, lowest first). The mean January high of those 153 cities is 22.4°C; Cozumel is 2.9°C warmer than that mean.

From January to February, average highs rise by 0.4°C to 25.7°C, and monthly rainfall falls from 64 mm to 28 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Cozumel climate table

1991–2020

Monthly climate averages for Cozumel, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	25.3°C23.4°C	23.4°C	64	11.6	11.011 h
February	25.7°C23.8°C	23.8°C	28	6.9	11.511 h
March	26.3°C24.3°C	24.3°C	26	5.7	12.012 h
April	27.3°C25.3°C	25.3°C	29	5.7	12.613 h
May	28.1°C26.1°C	26.1°C	84	11.1	13.113 h
June	28.5°C26.6°C	26.6°C	168	17.4	13.413 h
July	28.9°C27.0°C	27.0°C	82	14.1	13.213 h
August	29.1°C27.0°C	27.0°C	107	16.2	12.813 h
September	28.8°C26.6°C	26.6°C	179	21.1	12.312 h
October	27.9°C25.9°C	25.9°C	215	19.7	11.712 h
November	26.7°C24.9°C	24.9°C	103	12.9	11.211 h
December	25.9°C24.1°C	24.1°C	66	11.7	10.911 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Cozumel

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cozumel) is explained once on the Cozumel year overview and on the Sources, method and limits page.