São Borja weather in October

In October, São Borja sees average daytime highs of 27°C and overnight lows near 16°C, with 210 mm of rain across 11.5 wet days and about 12.7 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 25°C in the first days to 28°C by the end. The sky is clear or mostly clear about 36% of the time in October, and the air most often feels humid.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 06 min by month's end. Set against the rest of the year, October is São Borja's 12th-clearest and 2nd-windiest month. For the whole year in context, see São Borja's year-round climate.

Daytime high
27°
6th warmest
Overnight low
16°
6th coldest
Rainfall
210 mm
11.5 wet days
Daylight
12 h 42 min
7:08 AM – 7:50 PM
Cloud cover
57%
12th clearest
Wind
14 km/h
2nd windiest
Solar energy
5.32 kWh/m²
Travel score
6.4
out of 10

São Borja is human 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 25°C in the first days to 28°C by the end.

A typical October day in São Borja reaches about 27°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52615
62616
72616
82616
92616
102616
112616
122616
132616
142716
152716
162716
172717
182717
192717
202717
212717
222717
232717
242717
252717
262717
272817
282817
292817
302817
312817

How October really feels in São Borja

Once humidity and wind are folded in, October 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

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

São Borja weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°15911.913.63.9
Feb31° / 21°13211.2134.3
Mar30° / 20°12810.212.25.2
Apr27° / 17°16510.111.36.7
May23° / 14°1198.310.67.1
Jun21° / 12°1179.210.26.5
Jul20° / 11°1138.810.46.7
Aug23° / 12°1038.5117.2
Sep24° / 14°15110.111.87.0
Oct27° / 16°21011.512.76.4
Nov29° / 18°155913.45.7
Dec31° / 20°15710.613.84.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in October, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
34852
44852
54753
64753
74654
84654
94654
104753
114654
124654
134654
144654
154654
164654
174753
184753
194753
204753
214852
224852
234852
244951
254951
264951
275050
285149
295248
305248
315248

Chance of precipitation in October

Any precipitation

São Borja gets around 210 mm of rain over 11.5 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
337
437
538
638
738
839
939
1039
1139
1239
1339
1439
1539
1639
1738
1838
1938
2037
2137
2236
2336
2435
2535
2635
2734
2834
2934
3034
3133

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 24% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1352622161
2342523171
3332523181
4322424191
5312424202
6302424212
7292325212
8282325222
9272425223
10262425233
11252424233
12242524233
13232524244
14222625244
15212625254
16202625254
17192625264
18192625264
19182625274
20182525274
21182525274
22182525285
23182425285
24182425285
25192425285
26192324285
27192324285
28192324286
29192224286
30202224286
31202224286

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 14 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
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
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over October. Sunrise moves from 7:25 AM to 6:55 AM, and sunset from 7:41 PM to 8:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:257:41
212.37:247:42
312.37:227:42
412.47:217:43
512.47:207:43
612.47:197:44
712.47:187:45
812.57:177:45
912.57:167:46
1012.57:147:46
1112.67:137:47
1212.67:127:48
1312.67:117:48
1412.67:107:49
1512.77:097:49
1612.77:087:50
1712.77:077:51
1812.87:067:51
1912.87:057:52
2012.87:047:53
2112.87:037:53
2212.97:027:54
2312.97:017:55
2412.97:007:55
2512.97:007:56
2613.06:597:57
2713.06:587:58
2813.06:577:58
2913.06:567:59
3013.16:558:00
3113.16:558:00

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.32 kWh/m².

For context, solar energy here swings from a low near 2.53 kWh/m² to a high of 6.86 kWh/m² in December across the year — October's 5.32 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.1Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.4Bright
185.4Bright
195.5Bright
205.5Bright
215.5Bright
225.6Bright
235.6Bright
245.7Bright
255.7Bright
265.8Bright
275.8Bright
285.9Bright
295.9Bright
306.0Bright
316.0Intense
Planning a trip in October

Is October a good time to visit São Borja?

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

6.4
Sightseeing
7th-best month of the year
6.4
Beach & pool
6th-best month of the year

October is a reasonable time to visit São Borja for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for São Borja in October

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

In October, São Borja sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in São Borja in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — 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 Borja peaks around January 21 at about 14 (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 highModerateHighExtremeJan 21UV 14Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct5High
Nov11Extreme
Dec12Extreme

Air quality in São Borja 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 Borja is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodSep 1116 µg/m³Mar 226 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb14Moderate
Mar6Good
Apr7Good
May6Good
Jun7Good
Jul10Good
Aug15Moderate
Sep16Moderate
Oct9Good
Nov9Good
Dec6Good
Location & terrain

Where is São Borja?

São Borja sits at 28.7°S, 56.0°W, 98 m above sea level, in Brazil. The nearest listed city is Santo Tomé, 13 km away.

Topography around São Borja

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

Within 3 km, the terrain around São Borja has only modest variations in elevation — a maximum elevation change of 43 m around an average of 79 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 80 m; within 80 km, significant variations in elevation — a maximum elevation change of 276 m.

The land around São Borja is covered by artificial surfaces (26%) and cropland (24%) within 3 km, cropland (47%) within 16 km, and grassland (39%) and cropland (25%) within 80 km.

3 km
43 m
16 km
80 m
80 km
276 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Santo Tomé 13 km · Gobernador Virasora 68 km · Itaqui 74 km · Apóstoles 87 km · São Luiz Gonzaga 106 km · Santiago 125 km · Alegrete 127 km · São Francisco de Assis 130 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 Borja (-28.6606°, -56.0044°, elevation 98 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).