Sítio Novo weather in September

In September, Sítio Novo sees average daytime highs of 34°C and overnight lows near 23°C, with 14 mm of rain across 2.5 wet days and about 12 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 64% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Sítio Novo's 3rd-clearest and 4th-windiest month. For the whole year in context, see Sítio Novo's year-round climate.

Daytime high
34°
1st warmest
Overnight low
23°
10th coldest
Rainfall
14 mm
2.5 wet days
Daylight
12 hours
6:02 AM – 6:00 PM
Cloud cover
37%
3rd clearest
Wind
9 km/h
4th windiest
Solar energy
6.36 kWh/m²
Travel score
3.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical September day in Sítio Novo reaches about 34°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 36°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13523
23523
33523
43523
53523
63523
73523
83523
93523
103523
113523
123523
133523
143523
153523
163523
173423
183423
193423
203423
213423
223423
233423
243423
253423
263423
273423
283423
293423
303423

How September really feels in Sítio Novo

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sítio Novo weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°22126.312.32.9
Feb30° / 22°22224.412.22.9
Mar30° / 22°24127.1122.8
Apr31° / 22°16221.111.93.3
May32° / 22°7611.811.74.0
Jun33° / 22°8211.74.5
Jul33° / 22°50.811.74.4
Aug34° / 22°30.311.83.8
Sep34° / 23°142.5123.5
Oct33° / 23°457.912.13.5
Nov32° / 23°11415.312.33.4
Dec31° / 23°16921.112.33.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 64% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18911
28911
38812
48713
58713
68713
78713
88713
98713
108515
118515
128515
138515
148515
158515
168416
178416
188317
198317
208218
218119
228119
238020
247921
257822
267822
277624
287624
297426
307426

Chance of precipitation in September

Any precipitation

Sítio Novo gets around 14 mm of rain over 2.5 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 8% and peaks near 14% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
13
24
34
44
55
65
75
85
96
106
116
127
137
147
158
168
178
189
199
2010
2110
2211
2311
2412
2512
2613
2713
2814
2914
3014

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 63% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111636398
211536398
311536409
401536409
501535409
6015354010
7015354010
8014354010
9014354111
10013354111
11012344211
12012344212
13011344312
14010334413
1509324513
1609314614
1708304815
1807284915
1907275016
2006255118
2105235319
2205225320
2304205521
2404185622
2504175623
2603155824
2703145825
2802135926
2902125927
3002115928

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
1610calm
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 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over September. Sunrise moves from 6:10 AM to 5:55 AM, and sunset from 6:03 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:106:03
211.96:096:03
311.96:096:03
411.96:086:03
511.96:086:02
611.96:076:02
711.96:076:02
811.96:066:02
911.96:066:02
1011.96:056:01
1111.96:056:01
1211.96:046:01
1312.06:046:01
1412.06:036:01
1512.06:036:00
1612.06:026:00
1712.06:026:00
1812.06:016:00
1912.06:006:00
2012.06:005:59
2112.05:595:59
2212.05:595:59
2312.05:585:59
2412.05:585:59
2512.05:575:58
2612.05:575:58
2712.05:565:58
2812.05:565:58
2912.05:555:58
3012.05:555:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.36 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.53 kWh/m² to a high of 6.36 kWh/m² in September across the year — September's 6.36 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Sítio Novo

In seasonPeak

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

Sítio Novo's monsoon runs November–April, 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 Sítio Novo?

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

3.5
Sightseeing
5th-best month of the year
7.1
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Sítio Novo. The water and warmth also suit a beach or pool day.

What to pack for Sítio Novo in September

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

In September, Sítio Novo sees daytime highs around 34°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Sítio Novo 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 Sítio Novo peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 12UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Sítio Novo 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 Sítio Novo is worst in October — around 28 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (June, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1227 µg/m³Jun 176 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb12Good
Mar12Good
Apr11Good
May9Good
Jun6Good
Jul8Good
Aug17Moderate
Sep26Moderate
Oct28Moderate
Nov22Moderate
Dec17Moderate
Location & terrain

Where is Sítio Novo?

Sítio Novo sits at 5.9°S, 46.7°W, 274 m above sea level, in Brazil. The nearest listed city is Amarante do Maranhão, 35 km away.

Topography around Sítio Novo

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

Within 3 km, the terrain around Sítio Novo has only modest variations in elevation — a maximum elevation change of 130 m around an average of 263 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 388 m; within 80 km, significant variations in elevation — a maximum elevation change of 556 m.

The land around Sítio Novo is covered by grassland (62%) and trees (34%) within 3 km, trees (51%) and grassland (41%) within 16 km, and trees (56%) and grassland (38%) within 80 km.

3 km
130 m
16 km
388 m
80 km
556 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Amarante do Maranhão 35 km · Grajaú 62 km · Governador Edison Lobão 75 km · Formosa da Serra Negra 85 km · João Lisboa 91 km · Porto Franco 93 km · Tocantinópolis 94 km · Imperatriz 96 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 Sítio Novo (-5.8781°, -46.6992°, elevation 274 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).