Balneário Arroio do Silva weather in October

In October, Balneário Arroio do Silva sees average daytime highs of 22°C and overnight lows near 17°C, with 152 mm of rain across 15.9 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 22°C by the end. The sky is clear or mostly clear about 24% 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 Balneário Arroio do Silva's 12th-clearest and 1st-windiest month. For the whole year in context, see Balneário Arroio do Silva's year-round climate.

Daytime high
22°
7th warmest
Overnight low
17°
6th coldest
Rainfall
152 mm
15.9 wet days
Daylight
12 h 42 min
6:41 AM – 7:24 PM
Cloud cover
68%
12th clearest
Wind
14 km/h
1st windiest
Solar energy
5.02 kWh/m²
Travel score
5.6
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 22°C by the end.

A typical October day in Balneário Arroio do Silva reaches about 22°C in the afternoon and slips back to 17°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, October runs about 2°C warmer than September and about 2°C cooler than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12016
22116
32116
42116
52116
62116
72116
82117
92117
102117
112117
122117
132117
142217
152217
162217
172217
182217
192217
202217
212217
222217
232217
242217
252218
262218
272218
282218
292218
302218
312218

Balneário Arroio do Silva 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
Jan26° / 22°18920.313.65.2
Feb26° / 22°15619.5135.0
Mar26° / 21°13618.112.25.6
Apr24° / 19°10012.411.36.6
May21° / 16°13011.110.66.4
Jun19° / 14°9910.210.26.2
Jul18° / 13°11010.110.36.1
Aug19° / 14°10410116.3
Sep20° / 15°13212.511.85.9
Oct22° / 17°15215.912.75.6
Nov23° / 18°13514.913.46.1
Dec25° / 20°13916.413.85.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in October, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33961
43862
53862
63862
73763
83763
93763
103763
113763
123664
133763
143763
153763
163664
173664
183664
193664
203763
213763
223763
233862
243961
253961
264060
274060
284060
294060
304258
314357

Chance of precipitation in October

Any precipitation

Balneário Arroio do Silva gets around 152 mm of rain over 15.9 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 51% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
147
247
348
448
548
648
749
849
949
1050
1150
1250
1351
1451
1552
1652
1753
1853
1953
2053
2153
2253
2353
2453
2552
2652
2751
2851
2951
3050
3150

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 35% of days. Sticky, muggy-or-worse air turns up on roughly 24% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
124293790
2242937100
3232937110
4222838120
5212838130
6202738150
7192738160
8192638170
9182638180
10172637200
11172537210
12162537220
13152536230
14142637230
15142536240
16132536250
17122536260
18122536270
19122536270
20122535280
21122435290
22122434290
23122434300
24122433310
25122433310
26132332310
27132332320
28132332320
29132232330
30132231331
31132231341

Wind in October

Winds average 14 km/h in October, the windiest month of the year.

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 6:58 AM to 6:28 AM, and sunset from 7:15 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:587:15
212.36:577:15
312.36:567:16
412.46:557:17
512.46:547:17
612.46:527:18
712.56:517:18
812.56:507:19
912.56:497:20
1012.56:487:20
1112.66:477:21
1212.66:467:21
1312.66:457:22
1412.76:447:23
1512.76:427:23
1612.76:417:24
1712.76:407:25
1812.86:397:25
1912.86:387:26
2012.86:377:27
2112.86:367:27
2212.96:367:28
2312.96:357:29
2412.96:347:29
2513.06:337:30
2613.06:327:31
2713.06:317:32
2813.06:307:32
2913.16:297:33
3013.16:297:34
3113.16:287:35

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.02 kWh/m².

For context, solar energy here swings from a low near 2.72 kWh/m² to a high of 6.48 kWh/m² in December across the year — October's 5.02 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.1Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in October

Is October a good time to visit Balneário Arroio do Silva?

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

5.6
Sightseeing
9th-best month of the year
3.7
Beach & pool
8th-best month of the year

October is a reasonable time to visit Balneário Arroio do Silva for sightseeing.

What to pack for Balneário Arroio do Silva in October

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

In October, Balneário Arroio do Silva sees daytime highs around 22°C and nights near 17°C. Pack rain gear. Worth having: sun protection. About 16 days see rain.

rain gearsun protection

Sea temperature near Balneário Arroio do Silva in October

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

The sea at the nearest coast (about 16 km away) is warmest in February at about 25°C and coldest in August near 17°C.

It's comfortable for a long swim from Nov 1 to May 27 — about 6.8 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb25Warm
Mar25Warm
Apr23Refreshing
May21Refreshing
Jun19Cool
Jul17Cool
Aug17Cool
Sep18Cool
Oct19Cool
Nov21Refreshing
Dec23Refreshing

UV index in Balneário Arroio do Silva in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Balneário Arroio do Silva peaks around January 18 at about 13 (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 highModerateHighVery highExtremeJan 18UV 13Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Extreme
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct10Very high
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Balneário Arroio do Silva?

Balneário Arroio do Silva sits at 29.0°S, 49.4°W, 1 m above sea level, in Brazil. The nearest listed city is Araranguá, 9.0 km away.

Topography around Balneário Arroio do Silva

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Balneário Arroio do Silva.

Within 3 km, the terrain around Balneário Arroio do Silva has only modest variations in elevation — a maximum elevation change of 18 m around an average of 5 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 259 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,577 m.

The land around Balneário Arroio do Silva is covered by water (39%) and grassland (23%) within 3 km, water (49%) within 16 km, and trees (34%), water (32%) and grassland (21%) within 80 km.

3 km
18 m
16 km
259 m
80 km
1,577 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: Araranguá 9.0 km · Sombrio 24 km · Balneário Gaivota 25 km · Balneário Rincão 25 km · Forquilhinha 27 km · Içara 32 km · Criciúma 35 km · Morro da Fumaça 42 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 Balneário Arroio do Silva (-28.9869°, -49.4173°, elevation 1 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).