Caçapava weather in September

In September, Caçapava sees average daytime highs of 25°C and overnight lows near 15°C, with 89 mm of rain across 10.3 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 39% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Caçapava's 6th-clearest and 1st-windiest month. For the whole year in context, see Caçapava's year-round climate.

Daytime high
25°
8th warmest
Overnight low
15°
5th coldest
Rainfall
89 mm
10.3 wet days
Daylight
11 h 54 min
7:01 AM – 6:53 PM
Cloud cover
55%
6th clearest
Wind
7 km/h
1st windiest
Solar energy
4.87 kWh/m²
Travel score
6.8
out of 10

Caçapava is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical September day in Caçapava reaches about 25°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12513
22514
32514
42514
52514
62514
72514
82514
92514
102514
112514
122514
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262515
272515
282515
292515
302515

Caçapava weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°29523.713.34.3
Feb28° / 19°22719.512.84.6
Mar27° / 18°19019.912.25.0
Apr26° / 16°741111.56.6
May23° / 14°608.110.97.3
Jun23° / 12°375.610.67.8
Jul23° / 12°435.310.77.8
Aug24° / 12°375.611.28.0
Sep25° / 15°8910.311.96.8
Oct26° / 16°13715.812.55.7
Nov26° / 17°18918.213.15.2
Dec27° / 18°22721.913.44.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16634
26535
36436
46436
56337
66238
76139
86040
95941
105842
115743
125644
135545
145545
155446
165347
175149
185050
194951
204951
214852
224654
234555
244555
254456
264357
274258
284159
294159
304159

Chance of precipitation in September

Any precipitation

Caçapava gets around 89 mm of rain over 10.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
124
225
325
426
526
627
727
828
928
1029
1129
1229
1330
1430
1531
1632
1732
1834
1935
2036
2137
2238
2340
2441
2542
2643
2744
2845
2946
3046

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15040100
24940110
34841110
44641120
54542130
64343140
74243150
84044160
93844170
103645180
113546190
123346200
133147210
142948230
152848240
162748251
172648261
182548271
192448281
202347291
212247301
222146312
232045332
241944343
251843353
261842364
271741374
281740385
291639395
301638406

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 7:17 AM to 6:46 AM, and sunset from 6:48 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:176:48
211.67:166:49
311.67:156:49
411.67:146:49
511.67:136:50
611.67:126:50
711.77:116:50
811.77:106:51
911.77:086:51
1011.77:076:51
1111.87:066:52
1211.87:056:52
1311.87:046:52
1411.87:036:53
1511.87:026:53
1611.97:016:53
1711.97:006:54
1811.96:596:54
1911.96:586:54
2012.06:576:54
2112.06:566:55
2212.06:556:55
2312.06:546:55
2412.16:536:56
2512.16:526:56
2612.16:516:56
2712.16:506:57
2812.16:496:57
2912.26:476:57
3012.26:466:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.87 kWh/m².

For context, solar energy here swings from a low near 3.5 kWh/m² to a high of 5.54 kWh/m² in December across the year — September's 4.87 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Caçapava

In seasonPeak

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

Caçapava'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 September a good time to visit Caçapava?

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

6.8
Sightseeing
5th-best month of the year
6.3
Beach & pool
2nd-best month of the year

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

What to pack for Caçapava in September

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

In September, Caçapava sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Caçapava in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Caçapava peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 highExtremeJan 24UV 15Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Caçapava in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Caçapava is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2132 µg/m³Nov 2316 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr21Moderate
May27Moderate
Jun32Moderate
Jul31Moderate
Aug28Moderate
Sep28Moderate
Oct20Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Caçapava?

Caçapava sits at 23.1°S, 45.7°W, 564 m above sea level, in Brazil. The nearest listed city is Taubaté, 18 km away.

Topography around Caçapava

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

Within 3 km, the terrain around Caçapava has only modest variations in elevation — a maximum elevation change of 112 m around an average of 560 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 608 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,040 m.

The land around Caçapava is covered by artificial surfaces (32%) and grassland (29%) within 3 km, grassland (44%) and trees (37%) within 16 km, and trees (53%) and grassland (36%) within 80 km.

3 km
112 m
16 km
608 m
80 km
2,040 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Taubaté 18 km · São José dos Campos 20 km · Tremembé 23 km · Pindamonhangaba 32 km · Paraibuna 32 km · Jacareí 35 km · Campos do Jordão 42 km · Guararema 48 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 Caçapava (-23.1008°, -45.7069°, elevation 564 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).