Santa Rosa weather in October

In October, Santa Rosa sees average daytime highs of 27°C and overnight lows near 16°C, with 215 mm of rain across 12.9 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 34% 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 Santa Rosa's 12th-clearest and 3rd-windiest month. For the whole year in context, see Santa Rosa's year-round climate.

Daytime high
27°
7th warmest
Overnight low
16°
6th coldest
Rainfall
215 mm
12.9 wet days
Daylight
12 h 42 min
7:03 AM – 7:43 PM
Cloud cover
60%
12th clearest
Wind
11 km/h
3rd windiest
Solar energy
5.31 kWh/m²
Travel score
6.1
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical October day in Santa Rosa 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 2°C warmer than September and about 2°C cooler than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12515
22515
32615
42615
52616
62616
72616
82616
92616
102616
112616
122716
132716
142716
152717
162717
172717
182717
192717
202717
212717
222717
232717
242717
252817
262817
272817
282817
292817
302817
312817

How October really feels in Santa Rosa

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.

Santa Rosa weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°14314.513.63.9
Feb31° / 21°13614134.2
Mar30° / 19°12711.812.25.0
Apr27° / 17°1559.711.46.6
May23° / 13°1529.410.66.9
Jun21° / 12°1439.710.36.5
Jul20° / 11°1379.410.46.6
Aug23° / 12°948.5117.3
Sep25° / 14°15210.411.87.0
Oct27° / 16°21512.912.76.1
Nov29° / 18°1561113.45.5
Dec31° / 20°16013.113.74.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34555
44357
54258
64159
74159
84159
94159
104159
114159
124159
134159
144357
154456
164456
174555
184555
194555
204654
214753
224753
234852
244852
254852
264852
274852
284951
295050
305050
314951

Chance of precipitation in October

Any precipitation

Santa Rosa gets around 215 mm of rain over 12.9 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 41% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
340
440
540
640
741
841
941
1041
1141
1242
1342
1442
1542
1642
1743
1843
1943
2042
2142
2242
2342
2442
2541
2641
2741
2841
2941
3041
3140

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1302430160
2292429170
3282429180
4282329201
5272329211
6262228221
7252228241
8242228251
9242227261
10232227272
11222226282
12212226292
13212226292
14202226302
15192227302
16182227303
17172227313
18172228313
19162228313
20162228313
21152228313
22152228313
23152228313
24152228313
25152228313
26152229313
27152229313
28162229313
29162129314
30162129314
31162128314

Wind in October

Winds average 11 km/h in October.

Across October, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 7:19 AM to 6:50 AM, and sunset from 7:35 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:197:35
212.37:187:35
312.37:177:36
412.37:167:36
512.47:147:37
612.47:137:37
712.47:127:38
812.57:117:39
912.57:107:39
1012.57:097:40
1112.57:087:40
1212.67:077:41
1312.67:067:41
1412.67:057:42
1512.77:047:43
1612.77:037:43
1712.77:027:44
1812.77:017:45
1912.87:007:45
2012.86:597:46
2112.86:587:46
2212.86:577:47
2312.96:567:48
2412.96:557:48
2512.96:547:49
2612.96:547:50
2713.06:537:50
2813.06:527:51
2913.06:517:52
3013.06:507:53
3113.16:507:53

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.31 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 6.63 kWh/m² in December across the year — October's 5.31 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.4Bright
195.4Bright
205.5Bright
215.5Bright
225.5Bright
235.6Bright
245.6Bright
255.7Bright
265.7Bright
275.7Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in October

Is October a good time to visit Santa Rosa?

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

6.1
Sightseeing
7th-best month of the year
6.2
Beach & pool
5th-best month of the year

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

What to pack for Santa Rosa in October

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

In October, Santa Rosa sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Santa Rosa in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Rosa peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 20UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct7Very high
Nov11Extreme
Dec12Extreme

Air quality in Santa Rosa 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 Santa Rosa is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (March, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1516 µg/m³Mar 137 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr8Good
May7Good
Jun7Good
Jul8Good
Aug13Moderate
Sep17Moderate
Oct11Good
Nov8Good
Dec7Good
Location & terrain

Where is Santa Rosa?

Santa Rosa sits at 27.9°S, 54.5°W, 284 m above sea level, in Brazil. The nearest listed city is Santo Cristo, 19 km away.

Topography around Santa Rosa

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

Within 3 km, the terrain around Santa Rosa has only modest variations in elevation — a maximum elevation change of 137 m around an average of 273 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 268 m; within 80 km, significant variations in elevation — a maximum elevation change of 487 m.

The land around Santa Rosa is covered by trees (37%) and artificial surfaces (32%) within 3 km, cropland (61%) and trees (29%) within 16 km, and cropland (47%) and trees (39%) within 80 km.

3 km
137 m
16 km
268 m
80 km
487 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Santo Cristo 19 km · Giruá 22 km · Três de Maio 26 km · Horizontina 32 km · Santo Ângelo 52 km · El Soberbio 70 km · Três Passos 71 km · Oberá 76 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 Santa Rosa (-27.8708°, -54.4814°, elevation 284 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).