Piracicaba weather in October

In October, Piracicaba sees average daytime highs of 30°C and overnight lows near 18°C, with 104 mm of rain across 12.1 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 28% 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 Piracicaba's 8th-clearest and 2nd-windiest month. For the whole year in context, see Piracicaba's year-round climate.

Daytime high
30°
4th warmest
Overnight low
18°
7th coldest
Rainfall
104 mm
12.1 wet days
Daylight
12 h 30 min
6:40 AM – 7:12 PM
Cloud cover
63%
8th clearest
Wind
10 km/h
2nd windiest
Solar energy
5.79 kWh/m²
Travel score
4.9
out of 10
Air quality
Moderate
PM2.5 13 µg/m³ · 2019

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 30°C through the month.

A typical October day in Piracicaba reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 35°C. Set against its neighbours, October runs on par with September and on par with November.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62918
72918
83018
93018
103018
113018
123018
133018
143018
153018
163018
173018
183018
193018
203019
213019
223019
233019
243019
253019
263019
273019
283019
293019
303019
313019

How October really feels in Piracicaba

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.

Piracicaba weather by month

How October compares with the rest of the year at a glance. October is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°25522.313.23.6
Feb30° / 21°1861912.83.7
Mar30° / 20°14417.112.24.4
Apr29° / 18°537.311.56.2
May26° / 15°52610.97.5
Jun25° / 14°384.510.68.0
Jul25° / 13°313.810.78.1
Aug27° / 14°303.911.27.6
Sep29° / 16°618.111.96.0
Oct30° / 18°10412.112.54.9
Nov30° / 19°1481513.14.5
Dec30° / 20°19019.913.43.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34654
44654
54654
64654
74555
84456
94456
104456
114357
124357
134357
144258
154258
164258
174159
184060
194060
204060
213961
223961
233961
243961
253961
263961
273961
283961
294060
303961
313961

Chance of precipitation in October

Any precipitation

Piracicaba gets around 104 mm of rain over 12.1 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 39% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
935
1035
1136
1236
1337
1438
1538
1639
1740
1840
1941
2042
2142
2242
2343
2443
2543
2643
2743
2843
2943
3043
3144

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 39% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1202934160
2192935170
3192935180
4182836180
5172836190
6162836200
7162737200
8152737210
9152638210
10142538220
11142539230
12142439230
13132340240
14132340240
15122241250
16112141260
17112041270
18102042280
1991942291
2091842301
2181842311
2281842311
2381842311
2481842321
2581841321
2681941321
2781940331
2871939332
2971938342
3071938342
3171937342

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:53 AM to 6:29 AM, and sunset from 7:06 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:537:06
212.26:527:06
312.36:517:07
412.36:507:07
512.36:497:07
612.36:487:08
712.36:487:08
812.46:477:08
912.46:467:09
1012.46:457:09
1112.46:447:10
1212.56:437:10
1312.56:427:10
1412.56:417:11
1512.56:407:11
1612.56:407:12
1712.66:397:12
1812.66:387:13
1912.66:377:13
2012.66:367:14
2112.66:367:14
2212.76:357:15
2312.76:347:15
2412.76:337:16
2512.76:337:16
2612.76:327:17
2712.86:317:17
2812.86:317:18
2912.86:307:18
3012.86:307:19
3112.86:297:19

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.79 kWh/m².

For context, solar energy here swings from a low near 3.59 kWh/m² to a high of 6.02 kWh/m² in November across the year — October's 5.79 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.6Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in October

Hazard calendar for Piracicaba

In seasonPeak

None of Piracicaba's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Piracicaba's monsoon runs November–March, when most of the year's rain falls.

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

Is October a good time to visit Piracicaba?

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

4.9
Sightseeing
7th-best month of the year
6.5
Beach & pool
7th-best month of the year

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

What to pack for Piracicaba in October

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

In October, Piracicaba sees daytime highs around 30°C and nights near 18°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Piracicaba in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Piracicaba peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 20UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Piracicaba 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 Piracicaba is worst in September — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Piracicaba's WHO annual average of 13 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1121 µg/m³Dec 129 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May13Moderate
Jun14Moderate
Jul15Moderate
Aug20Moderate
Sep21Moderate
Oct15Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Piracicaba?

Piracicaba sits at 22.7°S, 47.6°W, 530 m above sea level, in Brazil. The nearest listed city is Rio das Pedras, 14 km away.

Topography around Piracicaba

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

Within 3 km, the terrain around Piracicaba has only modest variations in elevation — a maximum elevation change of 129 m around an average of 525 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 296 m; within 80 km, large variations in elevation — a maximum elevation change of 634 m.

The land around Piracicaba is covered by artificial surfaces (73%) and trees (20%) within 3 km, cropland (45%) and trees (24%) within 16 km, and cropland (39%), trees (31%) and grassland (23%) within 80 km.

3 km
129 m
16 km
296 m
80 km
634 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Rio das Pedras 14 km · Iracemápolis 21 km · Santa Bárbara d'Oeste 24 km · Charqueada 27 km · Limeira 31 km · Santa Gertrudes 32 km · Americana 33 km · Capivari 33 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 Piracicaba (-22.7253°, -47.6492°, elevation 530 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).