Passagem Franca weather in September

In September, Passagem Franca sees average daytime highs of 35°C and overnight lows near 23°C, with 8 mm of rain across 1.1 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 35°C through the month. The sky is clear or mostly clear about 70% of the time in September, and the air most often feels humid.

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 Passagem Franca's 2nd-clearest and 4th-windiest month. For the whole year in context, see Passagem Franca's year-round climate.

Daytime high
35°
1st warmest
Overnight low
23°
11th coldest
Rainfall
8 mm
1.1 wet days
Daylight
12 hours
5:50 AM – 5:48 PM
Cloud cover
32%
2nd clearest
Wind
9 km/h
4th windiest
Solar energy
6.58 kWh/m²
Travel score
3.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical September day in Passagem Franca reaches about 35°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 33°C and 37°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13423
23523
33523
43523
53523
63523
73523
83523
93523
103523
113523
123523
133523
143523
153523
163523
173523
183523
193523
203523
213523
223523
233523
243524
253524
263524
273524
283524
293524
303524

How September really feels in Passagem Franca

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.

Passagem Franca 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°25826.112.33.1
Feb30° / 22°24624.812.23.0
Mar30° / 22°27027.2123.0
Apr30° / 22°17521.411.93.4
May31° / 22°679.411.74.5
Jun32° / 22°81.511.65.0
Jul32° / 22°50.611.75.0
Aug34° / 23°10.111.84.2
Sep35° / 23°81.1123.3
Oct35° / 24°334.712.13.1
Nov33° / 23°9511.712.33.4
Dec31° / 23°15017.912.43.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18812
28713
38713
48713
58614
68614
78614
88713
98713
108713
118713
128713
138713
148713
158713
168713
178713
188713
198812
208812
218713
228713
238713
248812
258713
268614
278515
288515
298515
308416

Chance of precipitation in September

Any precipitation

Passagem Franca gets around 8 mm of rain over 1.1 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 4% and peaks near 9% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
11
21
32
42
52
62
72
82
92
102
112
122
132
143
153
163
173
184
194
205
215
225
236
246
257
267
277
288
298
309

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 23% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
123945121
223944132
323944132
423944132
523944132
623944132
723944132
823944132
923944132
1023844132
1123845132
1223745142
1323645142
1423546152
1513446163
1613346173
1713246183
1813145193
1913045213
2012845224
2112745234
2212645244
2312445265
2412344275
2512144286
2612044297
2711944307
2811843308
2911743318
3011643319

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 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
258calm
268calm
278calm
288calm
298calm
308calm

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 5:58 AM to 5:43 AM, and sunset from 5:51 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:585:51
211.95:585:51
311.95:575:51
411.95:575:51
511.95:565:51
611.95:565:50
711.95:555:50
811.95:555:50
911.95:545:50
1011.95:545:50
1111.95:535:49
1211.95:535:49
1311.95:525:49
1412.05:525:49
1512.05:515:49
1612.05:505:48
1712.05:505:48
1812.05:495:48
1912.05:495:48
2012.05:485:48
2112.05:485:47
2212.05:475:47
2312.05:475:47
2412.05:465:47
2512.05:465:47
2612.05:455:47
2712.05:455:46
2812.05:445:46
2912.05:445:46
3012.05:435:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.58 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 6.58 kWh/m² in September across the year — September's 6.58 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in September

Hazard calendar for Passagem Franca

In seasonPeak

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

Passagem Franca's monsoon runs December–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 Passagem Franca?

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

3.3
Sightseeing
8th-best month of the year
7.0
Beach & pool
4th-best month of the year

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

What to pack for Passagem Franca in September

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

In September, Passagem Franca sees daytime highs around 35°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Passagem Franca 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 Passagem Franca peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 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 highExtremeMar 11UV 15Aug 10UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme

Air quality in Passagem Franca 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 Passagem Franca is worst in September — around 63 µg/m³ PM2.5 (unhealthy), about 7.3× the cleanest month (June, 9 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyModerateSep 2363 µg/m³Jun 129 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar12Good
Apr11Good
May9Good
Jun9Good
Jul10Good
Aug25Moderate
Sep63Unhealthy
Oct63Unhealthy
Nov25Moderate
Dec17Moderate
Location & terrain

Where is Passagem Franca?

Passagem Franca sits at 6.2°S, 43.8°W, 237 m above sea level, in Brazil. The nearest listed city is Paraibano, 36 km away.

Topography around Passagem Franca

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

Within 3 km, the terrain around Passagem Franca has only modest variations in elevation — a maximum elevation change of 168 m around an average of 251 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 292 m; within 80 km, significant variations in elevation — a maximum elevation change of 422 m.

The land around Passagem Franca is covered by trees (59%) and grassland (31%) within 3 km, trees (79%) within 16 km, and trees (77%) within 80 km.

3 km
168 m
16 km
292 m
80 km
422 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Paraibano 36 km · São João dos Patos 36 km · Buriti Bravo 38 km · Colinas 54 km · Pastos Bons 57 km · Fortuna 65 km · Mirador 67 km · Parnarama 94 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 Passagem Franca (-6.1797°, -43.7836°, elevation 237 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).