São Raimundo Nonato weather in September

In September, São Raimundo Nonato sees average daytime highs of 34°C and overnight lows near 22°C, with 2 mm of rain across 0.2 wet days and about 11.9 hours of daylight. It is the 2nd-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 72% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is São Raimundo Nonato's 1st-clearest and 2nd-windiest month. For the whole year in context, see São Raimundo Nonato's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
22°
4th coldest
Rainfall
2 mm
0.2 wet days
Daylight
12 hours
5:47 AM – 5:44 PM
Cloud cover
28%
1st clearest
Wind
14 km/h
2nd windiest
Solar energy
6.75 kWh/m²
Travel score
4.0
out of 10

São Raimundo Nonato 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 34°C through the month.

A typical September day in São Raimundo Nonato reaches about 34°C in the afternoon and slips back to 22°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 about 2°C warmer than August and on par with October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13321
23321
33321
43321
53321
63321
73321
83421
93421
103421
113421
123421
133421
143422
153422
163422
173422
183422
193422
203422
213422
223422
233422
243422
253522
263522
273522
283523
293523
303523

How September really feels in São Raimundo Nonato

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.

São Raimundo Nonato weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°13515.112.53.9
Feb31° / 22°12314.812.33.9
Mar31° / 22°12215.812.13.9
Apr31° / 22°629.711.84.3
May32° / 22°183.111.64.9
Jun31° / 21°20.311.55.6
Jul31° / 20°10.111.55.8
Aug32° / 20°0011.75.1
Sep34° / 22°20.211.94.0
Oct34° / 23°242.512.23.4
Nov33° / 23°767.612.43.7
Dec32° / 23°9910.412.54.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 72% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 14%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28317
38317
48317
58317
68317
78317
88416
98416
108515
118515
128614
138713
148713
158713
168812
178812
188812
198812
208812
218812
228812
238812
248812
258614
268614
278515
288515
298416
308317

Chance of precipitation in September

Any precipitation

São Raimundo Nonato gets around 2 mm of rain over 0.2 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 1% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
141
151
161
171
181
191
201
211
221
231
241
252
262
272
282
292
303

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 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
117701300
217691400
317691400
417691400
517681500
617681500
717681500
817671600
917671600
1018661600
1118651700
1218651700
1318651700
1417651800
1517651800
1617651800
1717641900
1817631910
1917631910
2017622010
2117612110
2216622110
2316612210
2416602310
2516592410
2615602410
2715582520
2815582520
2915582520
3015562621

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 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 18 minutes over September. Sunrise moves from 5:56 AM to 5:38 AM, and sunset from 5:45 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:565:45
211.85:555:45
311.85:555:45
411.95:545:45
511.95:535:45
611.95:535:45
711.95:525:45
811.95:525:45
911.95:515:44
1011.95:505:44
1111.95:505:44
1211.95:495:44
1311.95:485:44
1411.95:485:44
1511.95:475:44
1612.05:475:44
1712.05:465:44
1812.05:455:43
1912.05:455:43
2012.05:445:43
2112.05:435:43
2212.05:435:43
2312.05:425:43
2412.05:425:43
2512.05:415:43
2612.05:405:43
2712.05:405:42
2812.15:395:42
2912.15:395:42
3012.15:385:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.75 kWh/m².

For context, solar energy here swings from a low near 4.85 kWh/m² to a high of 6.81 kWh/m² in October across the year — September's 6.75 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
Planning a trip in September

Hazard calendar for São Raimundo Nonato

In seasonPeak

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

São Raimundo Nonato's rainy season runs November–April, 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 São Raimundo Nonato?

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

4.0
Sightseeing
6th-best month of the year
7.8
Beach & pool
4th-best month of the year

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

What to pack for São Raimundo Nonato in September

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

In September, São Raimundo Nonato sees daytime highs around 34°C and nights near 22°C. Pack light clothes and sun protection.

light clothessun protection

UV index in São Raimundo Nonato 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 São Raimundo Nonato peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 22UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is São Raimundo Nonato?

São Raimundo Nonato sits at 9.0°S, 42.7°W, 354 m above sea level, in Brazil. The nearest listed city is Campo Alegre de Lourdes, 65 km away.

Topography around São Raimundo Nonato

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

Within 3 km, the terrain around São Raimundo Nonato has only modest variations in elevation — a maximum elevation change of 66 m around an average of 362 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 317 m; within 80 km, significant variations in elevation — a maximum elevation change of 500 m.

The land around São Raimundo Nonato is covered by shrubs (66%) within 3 km, shrubs (83%) within 16 km, and shrubs (91%) within 80 km.

3 km
66 m
16 km
317 m
80 km
500 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Campo Alegre de Lourdes 65 km · São João do Piauí 88 km · Remanso 96 km · Canto do Buriti 104 km · Pilão Arcado 112 km · Sento Sé 121 km · Bom Jesus 182 km · Casa Nova 190 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 São Raimundo Nonato (-9.0153°, -42.6994°, elevation 354 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).