São Mateus do Sul weather in October

In October, São Mateus do Sul sees average daytime highs of 24°C and overnight lows near 14°C, with 150 mm of rain across 15.2 wet days and about 12.6 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 24°C by the end. The sky is clear or mostly clear about 17% of the time in October, and the air most often feels humid.

Daylight stretches from about 12 h 12 min at the start of October to 13 hours by month's end. Set against the rest of the year, October is São Mateus do Sul's 11th-clearest and 2nd-windiest month. For the whole year in context, see São Mateus do Sul's year-round climate.

Daytime high
24°
7th warmest
Overnight low
14°
6th coldest
Rainfall
150 mm
15.2 wet days
Daylight
12 h 36 min
6:48 AM – 7:25 PM
Cloud cover
74%
11th clearest
Wind
10 km/h
2nd windiest
Solar energy
4.75 kWh/m²
Travel score
5.9
out of 10

São Mateus do Sul is settlement in Brazil.

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 24°C by the end.

A typical October day in São Mateus do Sul reaches about 24°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 29°C. Set against its neighbours, October runs about 1°C warmer than September and about 1°C cooler than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12313
22314
32314
42314
52314
62314
72314
82314
92414
102414
112414
122414
132414
142414
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282415
292515
302515
312515

São Mateus do Sul weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°18421.213.44.7
Feb27° / 18°15719.112.94.8
Mar26° / 17°10814.512.25.8
Apr24° / 15°769.311.46.8
May21° / 12°1059.210.86.5
Jun20° / 10°1099.110.46.3
Jul20° / 858.310.56.5
Aug22° / 10°857.711.17.1
Sep23° / 12°1401111.86.5
Oct24° / 14°15015.212.65.9
Nov25° / 16°1231413.36.0
Dec27° / 17°14417.213.65.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33169
43169
53169
63070
72971
82971
92971
102971
112971
122971
132971
142872
152773
162773
172773
182773
192773
202674
212674
222674
232674
242773
252872
262872
272872
282971
292971
303070
313070

Chance of precipitation in October

Any precipitation

São Mateus do Sul gets around 150 mm of rain over 15.2 wet days in October. 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 (%)
148
248
348
449
549
649
749
849
950
1050
1150
1250
1350
1450
1550
1650
1751
1851
1951
2050
2150
2250
2349
2449
2548
2648
2748
2847
2947
3047
3147

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the humid band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13635262
23535272
33435292
43334303
53234313
63133324
73033334
82932355
92831365
102731366
112631376
122630386
132530387
142430397
152430397
162330407
172230408
182230418
192130418
202130428
212129428
222129418
232129419
242129419
252129409
262129409
2721294010
2821294010
2921284010
3021284011
3121284011

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

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

Days grow by about 48 minutes over October. Sunrise moves from 7:03 AM to 6:36 AM, and sunset from 7:18 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.27:037:18
212.37:027:18
312.37:017:19
412.37:007:19
512.36:597:20
612.46:587:20
712.46:577:21
812.46:567:21
912.46:557:22
1012.56:547:22
1112.56:537:23
1212.56:527:23
1312.56:517:24
1412.66:507:24
1512.66:497:25
1612.66:487:25
1712.66:477:26
1812.76:467:26
1912.76:457:27
2012.76:447:27
2112.76:437:28
2212.86:437:29
2312.86:427:29
2412.86:417:30
2512.86:407:30
2612.96:397:31
2712.96:397:32
2812.96:387:32
2912.96:377:33
3012.96:377:34
3113.06:367:34

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.75 kWh/m².

For context, solar energy here swings from a low near 2.78 kWh/m² to a high of 5.75 kWh/m² in December across the year — October's 4.75 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.6Bright
94.6Bright
104.6Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in October

Is October a good time to visit São Mateus do Sul?

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

5.9
Sightseeing
8th-best month of the year
5.0
Beach & pool
5th-best month of the year

October is a reasonable time to visit São Mateus do Sul for sightseeing.

What to pack for São Mateus do Sul in October

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

In October, São Mateus do Sul sees daytime highs around 24°C and nights near 14°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

UV index in São Mateus do Sul in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 São Mateus do Sul peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 19UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul5High
Aug6High
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in São Mateus do Sul in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in São Mateus do Sul is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1315 µg/m³Dec 197 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr8Good
May9Good
Jun8Good
Jul10Good
Aug13Moderate
Sep16Moderate
Oct10Good
Nov8Good
Dec7Good
Location & terrain

Where is São Mateus do Sul?

São Mateus do Sul sits at 25.9°S, 50.4°W, 792 m above sea level, in Brazil. The nearest listed city is Três Barras, 27 km away.

Topography around São Mateus do Sul

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

Within 3 km, the terrain around São Mateus do Sul has only modest variations in elevation — a maximum elevation change of 80 m around an average of 775 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 159 m; within 80 km, large variations in elevation — a maximum elevation change of 879 m.

The land around São Mateus do Sul is covered by trees (40%), grassland (22%) and artificial surfaces (20%) within 3 km, trees (56%) and cropland (32%) within 16 km, and trees (60%) and cropland (33%) within 80 km.

3 km
80 m
16 km
159 m
80 km
879 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Três Barras 27 km · Canoinhas 34 km · Irati 53 km · Papanduva 60 km · Palmeira 62 km · Mafra 63 km · Rio Negro 64 km · Lapa 68 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 Mateus do Sul (-25.8742°, -50.3828°, elevation 792 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. 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).