Yauco weather in May

In May, Yauco sees average daytime highs of 28°C and overnight lows near 24°C, with 92 mm of rain across 15.4 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of May to 13 hours by month's end. Set against the rest of the year, May is Yauco's 11th-clearest and 7th-windiest month. For the whole year in context, see Yauco's year-round climate.

Daytime high
28°
6th warmest
Overnight low
24°
7th coldest
Rainfall
92 mm
15.4 wet days
Daylight
12 h 48 min
5:58 AM – 6:49 PM
Cloud cover
63%
11th clearest
Wind
15 km/h
7th windiest
Solar energy
6.52 kWh/m²
Travel score
5.6
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical May day in Yauco reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, May runs on par with April and about 1°C cooler than June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12723
22723
32723
42723
52723
62823
72823
82823
92823
102823
112823
122823
132824
142824
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824
312824

How May really feels in Yauco

Once humidity and wind are folded in, May averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Yauco weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 22°154.4117.8
Feb27° / 22°194.511.47.7
Mar27° / 22°357.511.97.1
Apr27° / 23°5511.212.46.4
May28° / 24°9215.412.85.6
Jun29° / 24°5313.213.15.2
Jul29° / 25°6013.3135.1
Aug29° / 25°8517.412.64.5
Sep29° / 25°12720.112.14.3
Oct28° / 24°10619.511.64.6
Nov28° / 23°7313.111.26.0
Dec27° / 23°22510.97.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 26% of May, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26535
36436
46337
56139
66040
75842
85743
95545
105347
115248
125149
134951
144951
154852
164753
174654
184555
194456
204357
214258
224258
234258
244159
254159
264159
274258
284258
294357
304357
314456

Chance of precipitation in May

Any precipitation

Yauco gets around 92 mm of rain over 15.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 49% and peaks near 51% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
244
345
446
547
648
748
849
950
1050
1151
1251
1351
1451
1550
1650
1749
1849
1949
2049
2149
2249
2349
2449
2549
2649
2749
2849
2949
3049
3148

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1247510
2246520
3245530
4243550
5242560
6240580
7239590
8237610
9235630
10234640
11132670
12130690
13128710
14127720
15025750
16023770
17022780
18020800
19019810
20018820
21017821
22017821
23016831
24015841
25015841
26014851
27014842
28013852
29013852
30012862
31012862

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 6:05 AM to 5:55 AM, and sunset from 6:44 PM to 6:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:056:44
212.76:056:44
312.76:046:45
412.76:046:45
512.76:036:45
612.76:036:46
712.76:026:46
812.76:026:46
912.86:016:47
1012.86:016:47
1112.86:006:47
1212.86:006:48
1312.85:596:48
1412.85:596:48
1512.85:596:49
1612.85:586:49
1712.95:586:49
1812.95:586:50
1912.95:576:50
2012.95:576:50
2112.95:576:51
2212.95:576:51
2312.95:566:52
2412.95:566:52
2512.95:566:52
2613.05:566:53
2713.05:566:53
2813.05:556:53
2913.05:556:54
3013.05:556:54
3113.05:556:55

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.52 kWh/m².

For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 6.69 kWh/m² in June across the year — May's 6.52 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
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 May

Hazard calendar for Yauco

In seasonPeak

In May, Yauco sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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

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

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

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

Is May a good time to visit Yauco?

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

5.6
Sightseeing
7th-best month of the year
6.0
Beach & pool
9th-best month of the year

May is a reasonable time to visit Yauco for sightseeing.

What to pack for Yauco in May

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

In May, Yauco sees daytime highs around 28°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Yauco in May

The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 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
May28Warm
Jun28Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Yauco in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Yauco peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very 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 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7Very high

Air quality in Yauco in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Yauco is worst in July — around 25 µg/m³ PM2.5 (moderate), about 4.8× the cleanest month (January, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1025 µg/m³Jan 15 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar7Good
Apr8Good
May15Moderate
Jun25Moderate
Jul25Moderate
Aug20Moderate
Sep15Moderate
Oct15Moderate
Nov8Good
Dec5Good
Location & terrain

Where is Yauco?

Yauco sits at 18.0°N, 66.8°W, 40 m above sea level, in Puerto Rico. The nearest listed city is San Germán, 21 km away.

San GermánLa PargueraPonceMayagüezAreciboAguadillaBarcelonetaManatí

Topography around Yauco

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

Within 3 km, the terrain around Yauco has only modest variations in elevation — a maximum elevation change of 215 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,191 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,307 m.

The land around Yauco is covered by trees (56%) and artificial surfaces (25%) within 3 km, trees (60%) and water (21%) within 16 km, and water (60%) and trees (31%) within 80 km.

3 km
215 m
16 km
1,191 m
80 km
1,307 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
May weather nearby: San Germán 21 km · La Parguera 22 km · Ponce 24 km · Mayagüez 36 km · Arecibo 51 km · Aguadilla 54 km · Barceloneta 57 km · Manatí 58 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 Yauco (18.035°, -66.8499°, elevation 40 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).