Las Piedras weather in May

In May, Las Piedras sees average daytime highs of 18°C and overnight lows near 11°C, with 80 mm of rain across 7.4 wet days and about 10.2 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 16°C by the end. The sky is clear or mostly clear about 31% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 36 min at the start of May to 9 h 54 min by month's end. Set against the rest of the year, May is Las Piedras's 11th-clearest and 11th-windiest month. For the whole year in context, see Las Piedras's year-round climate.

Daytime high
18°
8th warmest
Overnight low
11°
5th coldest
Rainfall
80 mm
7.4 wet days
Daylight
10 h 12 min
8:35 AM – 6:47 PM
Cloud cover
60%
11th clearest
Wind
14 km/h
11th windiest
Solar energy
2.6 kWh/m²
Travel score
6.2
out of 10

Las Piedras is city in Canelones Department, Uruguay.

Density
5,194/km²
people per km²
Founded
1744

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 16°C by the end.

A typical May day in Las Piedras reaches about 18°C in the afternoon and slips back to 11°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 22°C. Set against its neighbours, May runs about 4°C cooler than April and about 3°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12012
22012
32012
41912
51912
61912
71912
81912
91912
101912
111911
121911
131811
141811
151811
161811
171811
181811
191811
201811
211711
221711
231710
241710
251710
261710
271710
281710
291610
301610
311610

Las Piedras weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°767.214.17.1
Feb27° / 19°988.113.36.9
Mar25° / 17°968.312.37.3
Apr22° / 14°997.911.27.0
May18° / 11°807.410.26.2
Jun15° / 807.89.74.8
Jul14° / 847.49.94.4
Aug16° / 927.810.75.3
Sep17° / 10°847.911.85.9
Oct20° / 12°1139.312.96.5
Nov23° / 14°1018.113.87.3
Dec26° / 17°807.814.37.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35149
45149
55149
65050
75050
85050
94951
104852
114753
124753
134654
144555
154456
164456
174456
184258
194258
204159
214159
224159
234159
244060
254060
264060
274060
284060
294159
304258
314357

Chance of precipitation in May

Any precipitation

Las Piedras gets around 80 mm of rain over 7.4 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 24% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
123
223
323
423
523
622
722
822
922
1022
1122
1222
1323
1423
1524
1624
1724
1824
1925
2025
2125
2225
2325
2425
2525
2625
2725
2825
2925
3024
3124

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16023152
26023152
36222151
46322141
56322141
66422131
76522121
86522121
96622111
106622111
116722101
126722101
136722101
14682291
15682291
16682291
17682291
18692191
19692191
20702091
21702091
22711991
23731881
24741781
25751681
26771571
27771571
28791461
29801361
30821251
31821251

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 14 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
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light 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 10 h 36 min at the start of May to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over May. Sunrise moves from 8:23 AM to 8:46 AM, and sunset from 7:01 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.68:237:01
210.68:247:00
310.68:256:59
410.58:266:58
510.58:276:57
610.58:276:56
710.48:286:55
810.48:296:54
910.48:306:53
1010.48:316:52
1110.38:326:51
1210.38:326:50
1310.38:336:49
1410.28:346:48
1510.28:356:48
1610.28:356:47
1710.28:366:46
1810.18:376:45
1910.18:386:45
2010.18:396:44
2110.18:396:43
2210.08:406:43
2310.08:416:42
2410.08:426:41
2510.08:426:41
2610.08:436:40
279.98:446:40
289.98:446:39
299.98:456:39
309.98:466:39
319.98:466:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.6 kWh/m².

For context, solar energy here swings from a low near 2.18 kWh/m² to a high of 7.47 kWh/m² in December across the year — May's 2.6 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.0Moderate
43.0Moderate
53.0Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.7Moderate
132.7Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.3Moderate
312.3Moderate
Planning a trip in May

Is May a good time to visit Las Piedras?

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

6.2
Sightseeing
8th-best month of the year
2.1
Beach & pool
8th-best month of the year

May is a reasonable time to visit Las Piedras for sightseeing.

What to pack for Las Piedras in May

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

In May, Las Piedras sees daytime highs around 18°C and nights near 11°C. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Las Piedras in May

The nearest coast averages about 16°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 February at about 24°C and coldest in July near 11°C.

It's comfortable for a long swim from Nov 27 to Apr 9 — about 4.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb24Refreshing
Mar22Refreshing
Apr19Cool
May16Cool
Jun13Bracing
Jul11Bracing
Aug12Bracing
Sep13Bracing
Oct16Cool
Nov19Cool
Dec22Refreshing

UV index in Las Piedras in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Las Piedras peaks around January 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 17UV 12Jun 18UV 2
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct7Very high
Nov11Extreme
Dec11Extreme
Location & terrain

Where is Las Piedras?

Las Piedras sits at 34.7°S, 56.2°W, 72 m above sea level, in Uruguay. The nearest listed city is La Paz, 3.0 km away.

Topography around Las Piedras

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

Within 3 km, the terrain around Las Piedras has only modest variations in elevation — a maximum elevation change of 61 m around an average of 58 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 90 m; within 80 km, significant variations in elevation — a maximum elevation change of 375 m.

The land around Las Piedras is covered by grassland (39%) and artificial surfaces (39%) within 3 km, grassland (45%) within 16 km, and water (35%), grassland (32%) and cropland (23%) within 80 km.

3 km
61 m
16 km
90 m
80 km
375 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: La Paz 3.0 km · Progreso 7.0 km · Delta del Tigre 14 km · Montevideo 19 km · Barros Blancos 20 km · Paso de Carrasco 21 km · Canelones 24 km · Pando 24 km

Uruguay travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / I / L
230 V · 50 Hz
Prices
≈ 66% of US
price level, 2025
GDP per capita
$25,216
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
11.2
per 100k, 2023
Road deaths
14.8
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 542
Religion
none 47%Roman Catholic 37%Protestant 15%atheist 10%

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 Las Piedras (-34.7302°, -56.2191°, elevation 72 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. 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).