São Lourenço do Sul weather in May

In May, São Lourenço do Sul sees average daytime highs of 20°C and overnight lows near 14°C, with 101 mm of rain across 9 wet days and about 10.4 hours of daylight. It is the 8th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 30% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of May to 10 h 06 min by month's end. Set against the rest of the year, May is São Lourenço do Sul's 10th-clearest and 11th-windiest month. For the whole year in context, see São Lourenço do Sul's year-round climate.

Daytime high
20°
8th warmest
Overnight low
14°
5th coldest
Rainfall
101 mm
9 wet days
Daylight
10 h 24 min
8:12 AM – 6:36 PM
Cloud cover
60%
10th clearest
Wind
13 km/h
11th windiest
Solar energy
2.89 kWh/m²
Travel score
6.5
out of 10

São Lourenço do Sul is human settlement in Brazil.

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 22°C in the first days to 19°C by the end.

A typical May day in São Lourenço do Sul reaches about 20°C in the afternoon and slips back to 14°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 25°C. Set against its neighbours, May runs about 3°C cooler than April and about 2°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12215
22215
32215
42215
52115
62114
72114
82114
92114
102114
112114
122114
132114
142114
152014
162014
172014
182013
192013
202013
212013
222013
232013
241913
251913
261913
271912
281912
291912
301912
311912

São Lourenço do Sul weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 21°1101413.85.9
Feb27° / 21°11213.313.15.8
Mar26° / 20°10112.512.26.3
Apr24° / 17°1029.711.36.9
May20° / 14°101910.46.5
Jun18° / 11°1039.2105.9
Jul17° / 10°11910.110.25.6
Aug19° / 11°1169.910.96.1
Sep20° / 13°1391111.85.9
Oct22° / 15°13712.512.86.2
Nov24° / 17°989.913.66.9
Dec27° / 19°10411.4146.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25149
35149
45149
55050
65050
74951
85050
94951
104951
114951
124951
134852
144852
154852
164852
174852
184852
194654
204654
214654
224654
234654
244555
254555
264555
274555
284654
294555
304555
314654

Chance of precipitation in May

Any precipitation

São Lourenço do Sul gets around 101 mm of rain over 9 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
529
629
729
829
929
1029
1128
1228
1328
1428
1528
1628
1728
1828
1928
2028
2128
2228
2328
2428
2528
2628
2728
2827
2927
3027
3127

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 42% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1342328132
2352328122
3352428112
4362528111
5362528101
6362628101
736272891
836282881
936282870
1037292870
1137292860
1237302860
1337302750
1437302750
1538312750
1638312740
1739312640
1840312640
1941302540
2042302440
2144292430
2245282330
2347282230
2449272130
2550272030
2652261930
2753261830
2854261730
2956251630
3057251530
3158251430

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 48 min at the start of May to 10 h 06 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 8:01 AM to 8:21 AM, and sunset from 6:49 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.88:016:49
210.88:026:48
310.78:036:47
410.78:036:46
510.78:046:45
610.78:056:44
710.68:066:43
810.68:066:42
910.68:076:42
1010.68:086:41
1110.58:086:40
1210.58:096:39
1310.58:106:39
1410.58:106:38
1510.48:116:37
1610.48:126:36
1710.48:136:36
1810.48:136:35
1910.38:146:35
2010.38:156:34
2110.38:156:33
2210.38:166:33
2310.38:176:32
2410.28:176:32
2510.28:186:31
2610.28:186:31
2710.28:196:31
2810.28:206:30
2910.28:206:30
3010.18:216:29
3110.18:216:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.89 kWh/m².

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 6.87 kWh/m² in December across the year — May's 2.89 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.9Moderate
172.9Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in May

Is May a good time to visit São Lourenço do Sul?

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

6.5
Sightseeing
3rd-best month of the year
3.6
Beach & pool
8th-best month of the year

May is a reasonable time to visit São Lourenço do Sul for sightseeing.

What to pack for São Lourenço do Sul in May

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

In May, São Lourenço do Sul sees daytime highs around 20°C and nights near 14°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near São Lourenço do Sul in May

The nearest coast averages about 19°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 26°C and coldest in July near 14°C.

It's comfortable for a long swim from Oct 31 to May 3 — about 6.1 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb26Warm
Mar25Warm
Apr22Refreshing
May19Cool
Jun16Cool
Jul14Bracing
Aug15Bracing
Sep16Cool
Oct19Cool
Nov21Refreshing
Dec24Refreshing

UV index in São Lourenço do Sul in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Lourenço do Sul peaks around December 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeDec 22UV 12Jun 19UV 3
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar9Very high
Apr7High
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep7Very high
Oct8Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is São Lourenço do Sul?

São Lourenço do Sul sits at 31.4°S, 52.0°W, 13 m above sea level, in Brazil. The nearest listed city is Pelotas, 57 km away.

Topography around São Lourenço do Sul

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Lourenço do Sul.

Within 3 km, the terrain around São Lourenço do Sul has only modest variations in elevation — a maximum elevation change of 30 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 199 m; within 80 km, significant variations in elevation — a maximum elevation change of 507 m.

The land around São Lourenço do Sul is covered by water (26%) and cropland (23%) within 3 km, water (38%) and cropland (31%) within 16 km, and water (35%) and trees (28%) within 80 km.

3 km
30 m
16 km
199 m
80 km
507 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Pelotas 57 km · Camaquã 59 km · Capão do Leão 65 km · Canguçu 66 km · São José do Norte 72 km · Rio Grande 75 km · Encruzilhada do Sul 105 km · Piratini 107 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 São Lourenço do Sul (-31.3653°, -51.9783°, elevation 13 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).