Silvânia weather in September

In September, Silvânia sees average daytime highs of 31°C and overnight lows near 18°C, with 37 mm of rain across 6.3 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 50% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Silvânia's 4th-clearest and 3rd-windiest month. For the whole year in context, see Silvânia's year-round climate.

Daytime high
31°
1st warmest
Overnight low
18°
6th coldest
Rainfall
37 mm
6.3 wet days
Daylight
11 h 54 min
7:12 AM – 7:06 PM
Cloud cover
42%
4th clearest
Wind
9 km/h
3rd windiest
Solar energy
6.06 kWh/m²
Travel score
5.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Silvânia reaches about 31°C in the afternoon and slips back to 18°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13017
23117
33117
43118
53118
63118
73118
83118
93118
103118
113118
123118
133118
143118
153119
163119
173119
183119
193119
203119
213119
223119
233119
243119
253119
263119
273119
283119
293119
303119

Silvânia weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°25122.612.94.3
Feb28° / 19°19720.112.64.1
Mar28° / 19°21221.112.14.3
Apr28° / 18°8912.711.65.5
May28° / 17°21311.27.6
Jun27° / 15°60.9118.3
Jul27° / 15°10.311.18.4
Aug29° / 16°81.411.46.9
Sep31° / 18°376.311.95.1
Oct30° / 19°12916.312.44.1
Nov28° / 19°24523.112.83.9
Dec28° / 19°27224.8134.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28020
38020
48020
58020
67921
77822
87822
97723
107624
117525
127426
137426
147228
157129
167129
177030
186931
196832
206733
216634
226535
236337
246337
256238
266139
275941
285941
295842
305743

Chance of precipitation in September

Any precipitation

Silvânia gets around 37 mm of rain over 6.3 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 22% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
19
29
39
49
510
610
710
811
912
1013
1114
1215
1316
1418
1519
1620
1722
1823
1925
2027
2128
2230
2332
2433
2535
2636
2738
2839
2940
3041

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 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1751780
2751780
3741880
4731890
5731890
6711991
77019101
87019101
96919111
106819121
116720121
126620131
136421141
146122152
156022162
165823172
175524192
185225203
195125213
204826224
214527244
224227255
234027276
243727297
253527307
263327328
273127349
282926359
2928263610
3027253711

Wind in September

Winds average 9 km/h in September.

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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over September. Sunrise moves from 7:24 AM to 7:00 AM, and sunset from 7:04 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:247:04
211.77:237:04
311.77:227:05
411.77:227:05
511.77:217:05
611.77:207:05
711.87:197:05
811.87:187:05
911.87:177:05
1011.87:177:05
1111.87:167:05
1211.87:157:06
1311.97:147:06
1411.97:137:06
1511.97:127:06
1611.97:127:06
1711.97:117:06
1811.97:107:06
1912.07:097:06
2012.07:087:06
2112.07:077:07
2212.07:067:07
2312.07:067:07
2412.07:057:07
2512.17:047:07
2612.17:037:07
2712.17:027:07
2812.17:017:07
2912.17:017:08
3012.17:007:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.06 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 6.15 kWh/m² in October across the year — September's 6.06 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
36.0Bright
46.0Bright
56.0Bright
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.0Intense
226.0Intense
236.0Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Silvânia

In seasonPeak

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

Silvânia's monsoon runs October–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 Silvânia?

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

5.1
Sightseeing
6th-best month of the year
7.4
Beach & pool
5th-best month of the year

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

What to pack for Silvânia in September

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

In September, Silvânia sees daytime highs around 31°C and nights near 18°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Silvânia in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Silvânia peaks around February 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 13UV 15Jun 21UV 8
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Silvânia 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 Silvânia is worst in September — around 18 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (July, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1917 µg/m³Jul 148 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar12Good
Apr10Good
May10Good
Jun9Good
Jul8Good
Aug10Good
Sep18Moderate
Oct14Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Silvânia?

Silvânia sits at 16.7°S, 48.6°W, 914 m above sea level, in Brazil. The nearest listed city is Bela Vista de Goiás, 50 km away.

Topography around Silvânia

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

Within 3 km, the terrain around Silvânia has only modest variations in elevation — a maximum elevation change of 163 m around an average of 920 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 264 m; within 80 km, significant variations in elevation — a maximum elevation change of 531 m.

The land around Silvânia is covered by cropland (37%) and trees (30%) within 3 km, cropland (46%), trees (29%) and grassland (20%) within 16 km, and grassland (34%), cropland (30%) and trees (29%) within 80 km.

3 km
163 m
16 km
264 m
80 km
531 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Bela Vista de Goiás 50 km · Senador Canedo 51 km · Anápolis 52 km · Orizona 53 km · Alexânia 66 km · Goiânia 68 km · Aparecida de Goiânia 69 km · Nerópolis 71 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 Silvânia (-16.6666°, -48.6125°, elevation 914 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).