Castelo weather in October

In October, Castelo sees average daytime highs of 26°C and overnight lows near 17°C, with 110 mm of rain across 12.3 wet days and about 12.5 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 20% 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 12 h 48 min by month's end. Set against the rest of the year, October is Castelo's 9th-clearest and 2nd-windiest month. For the whole year in context, see Castelo's year-round climate.

Daytime high
26°
6th warmest
Overnight low
17°
6th coldest
Rainfall
110 mm
12.3 wet days
Daylight
12 h 30 min
6:15 AM – 6:44 PM
Cloud cover
69%
9th clearest
Wind
7 km/h
2nd windiest
Solar energy
5.11 kWh/m²
Travel score
6.1
out of 10

Castelo 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

Day-to-day highs hold fairly steady near 26°C through the month.

A typical October day in Castelo reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°C. Set against its neighbours, October runs on par with September and on par with November.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12616
22617
32617
42617
52617
62617
72617
82617
92617
102617
112617
122617
132617
142617
152617
162717
172717
182717
192717
202717
212717
222717
232718
242718
252618
262618
272618
282618
292618
302618
312618

Castelo weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°14814.113.14.9
Feb29° / 20°10711.912.74.8
Mar28° / 19°15916.612.15.0
Apr27° / 18°8813.411.56.0
May25° / 16°438.6117.1
Jun24° / 14°235.510.87.8
Jul24° / 14°24610.97.8
Aug24° / 14°266.511.37.7
Sep26° / 16°589.311.96.9
Oct26° / 17°11012.312.56.1
Nov26° / 18°19117.1135.2
Dec28° / 19°2241913.24.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33367
43367
53367
63466
73466
83466
93466
103565
113565
123664
133664
143763
153664
163664
173664
183664
193565
203466
213367
223367
233268
243169
253169
263070
272872
282773
292674
302575
312575

Chance of precipitation in October

Any precipitation

Castelo gets around 110 mm of rain over 12.3 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 40% and peaks near 52% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
138
238
337
437
536
636
735
835
934
1034
1135
1235
1335
1435
1536
1636
1737
1838
1938
2040
2141
2242
2344
2445
2547
2648
2749
2849
2950
3051
3152

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
18314912
27315012
37305013
47305013
56305113
66305113
76315014
85315014
95315014
105315014
115325014
125325014
134325014
144325015
154315015
163315016
173305116
183295117
193285019
202275120
212255221
222245222
232235124
242225125
252215126
262205028
272195029
282185031
292174932
302164933
312154935

Wind in October

Winds average 7 km/h in October.

Across October, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 12 min at the start of October to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over October. Sunrise moves from 6:28 AM to 6:06 AM, and sunset from 6:39 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:286:39
212.26:276:40
312.26:266:40
412.26:256:40
512.36:246:40
612.36:246:41
712.36:236:41
812.36:226:41
912.36:216:42
1012.46:206:42
1112.46:196:42
1212.46:186:43
1312.46:186:43
1412.46:176:43
1512.56:166:44
1612.56:156:44
1712.56:156:45
1812.56:146:45
1912.56:136:45
2012.66:126:46
2112.66:126:46
2212.66:116:47
2312.66:106:47
2412.66:106:48
2512.66:096:48
2612.76:086:48
2712.76:086:49
2812.76:076:49
2912.76:076:50
3012.76:066:50
3112.86:066:51

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.11 kWh/m².

For context, solar energy here swings from a low near 3.53 kWh/m² to a high of 5.96 kWh/m² in February across the year — October's 5.11 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
75.0Bright
85.0Bright
95.0Bright
105.1Bright
115.1Bright
125.1Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in October

Hazard calendar for Castelo

In seasonPeak

In October, Castelo sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Castelo's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Castelo?

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

6.1
Sightseeing
6th-best month of the year
5.9
Beach & pool
9th-best month of the year

October is a reasonable time to visit Castelo for sightseeing.

What to pack for Castelo in October

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

In October, Castelo sees daytime highs around 26°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Castelo in October

The nearest coast averages about 23°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 66 km away) is warmest in March at about 25°C and coldest in September near 22°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb25Warm
Mar25Warm
Apr25Warm
May25Warm
Jun23Refreshing
Jul23Refreshing
Aug23Refreshing
Sep22Refreshing
Oct23Refreshing
Nov24Refreshing
Dec24Warm

UV index in Castelo in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Castelo peaks around February 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 11UV 14Jun 20UV 6
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul7High
Aug9Very high
Sep10Very high
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Castelo?

Castelo sits at 20.6°S, 41.2°W, 129 m above sea level, in Brazil. The nearest listed city is Vargem Alta, 20 km away.

Topography around Castelo

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

Within 3 km, the terrain around Castelo has large variations in elevation — a maximum elevation change of 768 m around an average of 224 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,935 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,841 m.

The land around Castelo is covered by trees (56%) and grassland (37%) within 3 km, trees (53%) and grassland (46%) within 16 km, and trees (50%) and grassland (41%) within 80 km.

3 km
768 m
16 km
1,935 m
80 km
2,841 m
treesgrasslandartificial surfaceswaterwetland
October weather nearby: Vargem Alta 20 km · Cachoeiro de Itapemirim 28 km · Muniz Freire 28 km · Alegre 40 km · Iúna 46 km · Ibatiba 53 km · Mimoso do Sul 55 km · Piúma 55 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 Castelo (-20.6036°, -41.1847°, elevation 129 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).