Santa Gertrudes weather in September

In September, Santa Gertrudes sees average daytime highs of 28°C and overnight lows near 16°C, with 72 mm of rain across 7.9 wet days and about 11.9 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels dry.

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 Santa Gertrudes's 4th-clearest and 1st-windiest month. For the whole year in context, see Santa Gertrudes's year-round climate.

Daytime high
28°
7th warmest
Overnight low
16°
5th coldest
Rainfall
72 mm
7.9 wet days
Daylight
11 h 54 min
7:08 AM – 7:01 PM
Cloud cover
46%
4th clearest
Wind
10 km/h
1st windiest
Solar energy
5.43 kWh/m²
Travel score
6.2
out of 10

Santa Gertrudes is human settlement in Brazil.

Air quality
High
PM10 80 µg/m³ · 2016

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 28°C through the month.

A typical September day in Santa Gertrudes reaches about 28°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 34°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12815
22815
32815
42815
52816
62816
72816
82916
92916
102916
112916
122916
132916
142916
152916
162916
172916
182916
192817
202817
212817
222817
232817
242817
252817
262817
272817
282817
292817
302817

Santa Gertrudes weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°29023.313.23.7
Feb30° / 20°21419.412.83.8
Mar29° / 20°17318.512.24.5
Apr28° / 18°688.511.56.4
May25° / 15°576.410.97.5
Jun25° / 14°394.510.78.1
Jul25° / 13°353.910.88.2
Aug27° / 14°324.111.27.8
Sep28° / 16°727.911.96.2
Oct29° / 18°1281412.54.9
Nov29° / 19°18416.413.14.6
Dec29° / 20°23021.413.43.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% 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 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17525
27525
37426
47327
57327
67129
77030
86931
96931
106832
116733
126634
136634
146535
156436
166337
176337
186238
196139
206040
215941
225842
235644
245545
255446
265347
275248
285149
295050
304951

Chance of precipitation in September

Any precipitation

Santa Gertrudes gets around 72 mm of rain over 7.9 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 27% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
118
219
319
420
520
620
721
821
922
1022
1122
1223
1323
1424
1525
1625
1726
1827
1928
2029
2130
2231
2332
2433
2534
2635
2736
2836
2937
3038

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15729131
25629141
35529151
45429152
55329162
65130172
75030182
84931182
94731193
104532203
114333213
124234213
134034223
143835234
153736234
163536244
173436255
183236265
193136276
203036277
212936288
222736289
2326352910
2425343011
2525343012
2624333113
2723323114
2822313215
2922303315
3021293316

Wind in September

Winds average 10 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 7:23 AM to 6:54 AM, and sunset from 6:56 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:236:56
211.67:236:56
311.67:226:57
411.67:216:57
511.67:206:57
611.77:196:58
711.77:186:58
811.77:176:58
911.77:156:59
1011.77:146:59
1111.87:136:59
1211.87:126:59
1311.87:117:00
1411.87:107:00
1511.97:097:00
1611.97:087:01
1711.97:077:01
1811.97:067:01
1911.97:057:01
2012.07:047:02
2112.07:037:02
2212.07:027:02
2312.07:017:03
2412.17:007:03
2512.16:597:03
2612.16:587:04
2712.16:577:04
2812.16:567:04
2912.26:557:05
3012.26:547:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.43 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 5.99 kWh/m² in November across the year — September's 5.43 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.6Bright
Planning a trip in September

Hazard calendar for Santa Gertrudes

In seasonPeak

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

Santa Gertrudes'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 September a good time to visit Santa Gertrudes?

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

6.2
Sightseeing
6th-best month of the year
7.4
Beach & pool
2nd-best month of the year

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

What to pack for Santa Gertrudes in September

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

In September, Santa Gertrudes sees daytime highs around 28°C and nights near 16°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Santa Gertrudes in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Gertrudes peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 19UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Santa Gertrudes 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 Santa Gertrudes is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1032 µg/m³Dec 1516 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr22Moderate
May26Moderate
Jun28Moderate
Jul30Moderate
Aug31Moderate
Sep32Moderate
Oct22Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Santa Gertrudes?

Santa Gertrudes sits at 22.5°S, 47.5°W, 592 m above sea level, in Brazil. The nearest listed city is Rio Claro, 6.0 km away.

Topography around Santa Gertrudes

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

Within 3 km, the terrain around Santa Gertrudes has only modest variations in elevation — a maximum elevation change of 175 m around an average of 614 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 345 m; within 80 km, large variations in elevation — a maximum elevation change of 634 m.

The land around Santa Gertrudes is covered by cropland (36%) and trees (23%) within 3 km, cropland (47%) and trees (28%) within 16 km, and cropland (44%) and trees (31%) within 80 km.

3 km
175 m
16 km
345 m
80 km
634 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Rio Claro 6.0 km · Cordeirópolis 8.0 km · Iracemápolis 14 km · Limeira 18 km · Araras 19 km · Charqueada 26 km · Piracicaba 32 km · Engenheiro Coelho 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 Santa Gertrudes (-22.4567°, -47.5303°, elevation 592 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).