Cataño weather in July

In July, Cataño sees average daytime highs of 30°C and overnight lows near 25°C, with 80 mm of rain across 16.5 wet days and about 13 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 38% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 06 min at the start of July to 12 h 54 min by month's end. Set against the rest of the year, July is Cataño's 7th-clearest and 1st-windiest month. For the whole year in context, see Cataño's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
25°
11th coldest
Rainfall
80 mm
16.5 wet days
Daylight
13 hours
6:00 AM – 7:00 PM
Cloud cover
55%
7th clearest
Wind
17 km/h
1st windiest
Solar energy
6.49 kWh/m²
Travel score
4.4
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical July day in Cataño reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123025
133025
143025
153025
163025
173025
183025
193025
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
303025
313025

How July really feels in Cataño

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.

Cataño weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 23°3910.4116.8
Feb27° / 22°287.611.47.1
Mar28° / 23°398.411.96.9
Apr28° / 23°721112.45.8
May29° / 24°11216.212.94.7
Jun30° / 25°6813.913.14.5
Jul30° / 25°8016.5134.4
Aug30° / 25°9518.712.64.0
Sep30° / 25°13120.812.13.7
Oct29° / 25°12520.511.64.0
Nov28° / 24°11218.211.14.9
Dec27° / 23°4812.210.96.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25743
35842
45842
55941
66040
76040
86040
96040
106139
116139
126040
136040
146040
156040
166040
176040
186040
196040
206040
216040
226040
236040
246040
255941
265941
276040
285941
295941
306040
316040

Chance of precipitation in July

Any precipitation

Cataño gets around 80 mm of rain over 16.5 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 53% and peaks near 55% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
148
249
349
450
550
651
751
852
952
1052
1153
1253
1353
1453
1553
1653
1753
1853
1953
2053
2153
2253
2354
2454
2554
2654
2754
2854
2955
3055
3155

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18317
28317
38317
48317
58317
68218
78218
88218
98119
108119
118020
127921
137822
147723
157624
167525
177426
187426
197327
207228
217129
227030
236931
246832
256733
266634
276535
286535
296436
306337
316337

Wind in July

Winds average 17 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 06 min at the start of July to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over July. Sunrise moves from 5:55 AM to 6:05 AM, and sunset from 7:01 PM to 6:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:557:01
213.15:557:01
313.15:567:01
413.15:567:01
513.15:567:01
613.15:567:01
713.15:577:01
813.15:577:01
913.15:577:01
1013.15:587:01
1113.05:587:01
1213.05:587:01
1313.05:597:01
1413.05:597:01
1513.05:597:00
1613.06:007:00
1713.06:007:00
1813.06:017:00
1913.06:017:00
2013.06:017:00
2113.06:026:59
2213.06:026:59
2312.96:026:59
2412.96:036:59
2512.96:036:58
2612.96:036:58
2712.96:046:58
2812.96:046:57
2912.96:046:57
3012.96:056:57
3112.96:056:56

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.

For context, solar energy here swings from a low near 4.34 kWh/m² to a high of 6.56 kWh/m² in June across the year — July's 6.49 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
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
286.4Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in July

Hazard calendar for Cataño

In seasonPeak

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

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

Cataño sees seasonal dust haze (July), heaviest in July.

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

Is July a good time to visit Cataño?

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

4.4
Sightseeing
9th-best month of the year
6.0
Beach & pool
8th-best month of the year

July is a reasonable time to visit Cataño for sightseeing.

What to pack for Cataño in July

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

In July, Cataño sees daytime highs around 30°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Cataño in July

The nearest coast averages about 28°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 20 km away) is warmest in September at about 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar26Warm
Apr27Warm
May27Warm
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Cataño in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cataño peaks around April 13 at about 13 (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 highApr 13UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Cataño 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 Cataño is worst in July — around 24 µg/m³ PM2.5 (moderate), about 4.6× the cleanest month (January, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1324 µg/m³Jan 15 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar7Good
Apr8Good
May14Moderate
Jun23Moderate
Jul24Moderate
Aug20Moderate
Sep15Moderate
Oct15Moderate
Nov8Good
Dec5Good
Location & terrain

Where is Cataño?

Cataño sits at 18.4°N, 66.1°W, 3 m above sea level, in Puerto Rico. The nearest listed city is San Juan, 3.0 km away.

CarolinaCaguas

Topography around Cataño

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

Within 3 km, the terrain around Cataño has only modest variations in elevation — a maximum elevation change of 77 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 326 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,308 m.

The land around Cataño is covered by water (40%) and artificial surfaces (35%) within 3 km, water (45%), artificial surfaces (25%) and trees (24%) within 16 km, and water (59%) and trees (32%) within 80 km.

3 km
77 m
16 km
326 m
80 km
1,308 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
July weather nearby: San Juan 3.0 km · Bayamón 6.0 km · Levittown 7.0 km · Guaynabo 9.0 km · Candelaria 10 km · Trujillo Alto 15 km · Carolina 18 km · Caguas 24 km

Puerto Rico travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 78% of US
price level, 2025
GDP per capita
$40,620
2025
Happiness
7.0 / 10
World Happiness, 2015
Safe drinking water
99%
of population, 2024
Homicide rate
14.6
per 100k, 2023
Income group
High
World Bank
Religion
Roman Catholic 56%Protestant 33%none 7%other 2%

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 Cataño (18.4413°, -66.1182°, elevation 3 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).