Cozumel weather in July

In July, Cozumel sees average daytime highs of 29°C and overnight lows near 27°C, with 82 mm of rain across 14.2 wet days and about 13.1 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 44% of the time in July, and the air most often feels miserable.

Daylight stretches from about 13 h 12 min at the start of July to 13 hours by month's end. Set against the rest of the year, July is Cozumel's 8th-clearest and 10th-windiest month. For the whole year in context, see Cozumel's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
27°
11th coldest
Rainfall
82 mm
14.2 wet days
Daylight
13 h 06 min
5:19 AM – 6:27 PM
Cloud cover
49%
8th clearest
Wind
18 km/h
10th windiest
Solar energy
6.49 kWh/m²
Travel score
5.3
out of 10

Cozumel is municipal seat of Cozumel, State of Quintana Roo, Mexico.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical July day in Cozumel reaches about 29°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 29°C. Set against its neighbours, July runs on par with June and on par with August.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12827
22827
32827
42827
52827
62827
72827
82827
92827
102827
112827
122827
132827
142827
152827
162927
172927
182927
192927
202927
212927
222927
232927
242927
252927
262927
272927
282927
292927
302927
312927

How July really feels in Cozumel

Once humidity and wind are folded in, July averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Cozumel weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 24°6411.610.96.9
Feb26° / 24°286.811.37.6
Mar26° / 24°265.711.97.8
Apr27° / 25°295.812.57.6
May28° / 26°8511136.5
Jun28° / 27°16817.513.25.0
Jul29° / 27°8214.213.15.3
Aug29° / 27°10716.612.75.0
Sep29° / 27°18021.512.14.2
Oct28° / 26°21419.811.55.0
Nov27° / 25°10312.5116.4
Dec26° / 24°6611.910.86.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 17% of July, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25347
35347
45446
55545
65644
75743
85842
95842
105941
116040
126139
136238
146238
156337
166337
176436
186436
196436
206634
216634
226634
236634
246634
256535
266535
276535
286535
296436
306436
316436

Chance of precipitation in July

Any precipitation

Cozumel gets around 82 mm of rain over 14.2 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
150
249
348
448
547
647
746
846
946
1047
1147
1247
1347
1447
1547
1647
1747
1847
1947
2047
2146
2246
2346
2446
2546
2645
2745
2845
2945
3046
3146

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the miserable band about 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11486
21486
31486
41486
51585
61585
71585
81684
91684
101684
111783
121783
131783
141783
151684
161684
171684
181585
191585
201486
211387
221387
231288
241288
251189
261189
271189
281189
291090
301090
311090

Wind in July

Winds average 18 km/h in July.

Across July, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 12 min at the start of July to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over July. Sunrise moves from 5:14 AM to 5:25 AM, and sunset from 6:28 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:146:28
213.25:156:28
313.25:156:28
413.25:156:28
513.25:156:28
613.25:166:28
713.25:166:28
813.25:176:28
913.25:176:28
1013.25:176:28
1113.25:186:28
1213.25:186:28
1313.25:186:28
1413.15:196:28
1513.15:196:28
1613.15:196:27
1713.15:206:27
1813.15:206:27
1913.15:216:27
2013.15:216:26
2113.15:216:26
2213.15:226:26
2313.15:226:26
2413.05:226:25
2513.05:236:25
2613.05:236:25
2713.05:246:24
2813.05:246:24
2913.05:246:23
3013.05:256:23
3113.05:256:23

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.49 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 6.49 kWh/m² in July across the year — July's 6.49 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in July

Hazard calendar for Cozumel

In seasonPeak

In July, Cozumel sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Cozumel sits in the Atlantic hurricane belt; the season peaks August–October.

Cozumel's rainy season runs August–November, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Cozumel?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.3
Sightseeing
8th-best month of the year
6.4
Beach & pool
5th-best month of the year

July is a reasonable time to visit Cozumel for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Cozumel in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Cozumel sees daytime highs around 29°C and nights near 27°C. Pack light clothes, rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Cozumel in July

The nearest coast averages about 29°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in September at about 29°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Cozumel in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cozumel peaks around April 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighApr 18UV 12Dec 16UV 7
UV index (midday)Level
Jan7Very high
Feb10Very high
Mar11Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec6High

Air quality in Cozumel in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Cozumel is worst in June — around 26 µg/m³ PM2.5 (moderate), about 4.3× the cleanest month (November, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2126 µg/m³Nov 226 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar8Good
Apr11Good
May15Moderate
Jun26Moderate
Jul24Moderate
Aug19Moderate
Sep13Moderate
Oct9Good
Nov6Good
Dec6Good
Location & terrain

Where is Cozumel?

Cozumel sits at 20.5°N, 86.9°W, 7 m above sea level, in Mexico. The nearest listed city is Playa del Carmen, 20 km away.

Topography around Cozumel

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cozumel.

Within 3 km, the terrain around Cozumel has only modest variations in elevation — a maximum elevation change of 13 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 22 m; within 80 km, only modest variations in elevation — a maximum elevation change of 35 m.

The land around Cozumel is covered by trees (37%), artificial surfaces (30%) and water (22%) within 3 km, water (57%) and trees (38%) within 16 km, and water (53%) and trees (42%) within 80 km.

3 km
13 m
16 km
22 m
80 km
35 m
treesgrasslandartificial surfaceswatermangroves
July weather nearby: Playa del Carmen 20 km · Tulum 63 km · Cancun 76 km · Isla Mujeres 84 km · Valladolid 132 km · Tizimín 145 km · Felipe Carrillo Puerto 154 km · Chichen Itza 170 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Cozumel (20.5004°, -86.9427°, elevation 7 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).