Guaratuba weather in October

In October, Guaratuba sees average daytime highs of 23°C and overnight lows near 19°C, with 136 mm of rain across 16.4 wet days and about 12.6 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 9% of the time in October, and the air most often feels muggy.

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 Guaratuba's 12th-clearest and 2nd-windiest month. For the whole year in context, see Guaratuba's year-round climate.

Daytime high
23°
7th warmest
Overnight low
19°
6th coldest
Rainfall
136 mm
16.4 wet days
Daylight
12 h 36 min
6:41 AM – 7:18 PM
Cloud cover
80%
12th clearest
Wind
11 km/h
2nd windiest
Solar energy
4.23 kWh/m²
Travel score
5.5
out of 10

Guaratuba 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 22°C in the first days to 24°C by the end.

A typical October day in Guaratuba reaches about 23°C in the afternoon and slips back to 19°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°C. Set against its neighbours, October runs about 1°C warmer than September and about 2°C cooler than November.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12218
22218
32218
42318
52318
62318
72318
82318
92318
102318
112318
122319
132319
142319
152319
162319
172419
182419
192419
202419
212419
222419
232419
242419
252419
262419
272419
282419
292419
302419
312419

Guaratuba weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°27123.313.44.1
Feb28° / 23°24920.612.94.1
Mar27° / 22°20621.412.24.7
Apr26° / 20°11914.211.46.0
May23° / 18°11512.710.86.4
Jun22° / 16°9810.110.46.5
Jul21° / 15°899.910.56.4
Aug21° / 16°819.411.16.6
Sep22° / 17°13313.911.85.8
Oct23° / 19°13616.412.65.5
Nov25° / 20°15316.613.35.5
Dec27° / 22°18619.213.65.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% 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 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32278
42278
52278
62278
72278
82278
92278
102080
112080
122080
132080
141981
151981
161981
171981
181882
191882
201882
211882
221981
231981
242080
252080
262179
272179
282278
292278
302278
312278

Chance of precipitation in October

Any precipitation

Guaratuba gets around 136 mm of rain over 16.4 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 54% and peaks near 56% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
156
256
356
455
555
654
753
853
952
1052
1152
1252
1352
1452
1553
1653
1754
1854
1954
2055
2155
2255
2355
2455
2555
2655
2755
2854
2954
3054
3154

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 40% of days. Sticky, muggy-or-worse air turns up on roughly 48% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172141292
272141302
362040312
462039323
551938343
651937353
751837374
851836384
951735395
1041734405
1141633416
1241633416
1341632426
1441532427
1541532437
1631531438
1731431448
1831431448
1931431449
2031330449
2131330449
22313304410
23313304410
24314304410
25314304310
26314304311
27313304311
28313304311
29313304312
30313304312
31312304312

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 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
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 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 6:56 AM to 6:29 AM, and sunset from 7:11 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:567:11
212.36:557:11
312.36:547:11
412.36:537:12
512.36:527:12
612.46:517:13
712.46:507:13
812.46:497:14
912.46:487:14
1012.56:477:15
1112.56:467:15
1212.56:457:16
1312.56:447:16
1412.66:437:17
1512.66:427:17
1612.66:417:18
1712.66:407:19
1812.76:397:19
1912.76:387:20
2012.76:377:20
2112.76:367:21
2212.86:357:21
2312.86:357:22
2412.86:347:23
2512.86:337:23
2612.96:327:24
2712.96:317:24
2812.96:317:25
2912.96:307:26
3013.06:297:26
3113.06:297:27

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.23 kWh/m².

For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 5.51 kWh/m² in December across the year — October's 4.23 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
63.9Moderate
74.0Moderate
84.0Bright
94.0Bright
104.1Bright
114.1Bright
124.1Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.6Bright
314.6Bright
Planning a trip in October

Is October a good time to visit Guaratuba?

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

5.5
Sightseeing
7th-best month of the year
4.5
Beach & pool
8th-best month of the year

October is a reasonable time to visit Guaratuba for sightseeing.

What to pack for Guaratuba in October

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

In October, Guaratuba sees daytime highs around 23°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 16 days see rain.

rain gearlight clothes

Sea temperature near Guaratuba in October

The nearest coast averages about 21°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 20 km away) is warmest in February at about 27°C and coldest in August near 19°C.

It's comfortable for a long swim from Sep 20 to Jun 28 — about 9.3 months when the water holds above 20°C.

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr25Warm
May23Refreshing
Jun21Refreshing
Jul19Cool
Aug19Cool
Sep20Cool
Oct21Refreshing
Nov23Refreshing
Dec25Warm

UV index in Guaratuba 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 Guaratuba peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighHighVery highExtremeJan 19UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May6High
Jun5High
Jul5Moderate
Aug6High
Sep8Very high
Oct10Very high
Nov12Extreme
Dec13Extreme

Air quality in Guaratuba 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 Guaratuba is worst in August — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (February, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1115 µg/m³Feb 229 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr10Good
May12Good
Jun14Moderate
Jul15Moderate
Aug15Moderate
Sep14Moderate
Oct12Good
Nov9Good
Dec9Good
Location & terrain

Where is Guaratuba?

Guaratuba sits at 25.9°S, 48.6°W, 6 m above sea level, in Brazil. The nearest listed city is Matinhos, 7.0 km away.

Topography around Guaratuba

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

Within 3 km, the terrain around Guaratuba has only modest variations in elevation — a maximum elevation change of 138 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 824 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,785 m.

The land around Guaratuba is covered by water (49%) and artificial surfaces (25%) within 3 km, water (50%) and trees (38%) within 16 km, and trees (54%) and water (34%) within 80 km.

3 km
138 m
16 km
824 m
80 km
1,785 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
October weather nearby: Matinhos 7.0 km · Pontal do Paraná 24 km · Itapoá 26 km · Garuva 32 km · São Francisco do Sul 41 km · Paranaguá 41 km · Morretes 52 km · Antonina 52 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 Guaratuba (-25.8828°, -48.5747°, elevation 6 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. 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).