Ji Paraná weather in September

In September, Ji Paraná sees average daytime highs of 33°C and overnight lows near 23°C, with 80 mm of rain across 13.4 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels oppressive.

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 Ji Paraná's 4th-clearest and 3rd-windiest month. For the whole year in context, see Ji Paraná's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
23°
9th coldest
Rainfall
80 mm
13.4 wet days
Daylight
11 h 54 min
6:04 AM – 6:00 PM
Cloud cover
53%
4th clearest
Wind
6 km/h
3rd windiest
Solar energy
5.82 kWh/m²
Travel score
3.1
out of 10

Ji Paraná 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 33°C through the month.

A typical September day in Ji Paraná reaches about 33°C in the afternoon and slips back to 23°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 30°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)
13422
23422
33422
43422
53422
63422
73423
83423
93423
103423
113423
123423
133423
143423
153423
163423
173323
183323
193323
203323
213323
223323
233323
243323
253323
263323
273323
283323
293323
303323

How September really feels in Ji Paraná

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.

Ji Paraná weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°27028.512.62.9
Feb29° / 23°26126.112.42.9
Mar30° / 23°24127.812.12.9
Apr30° / 22°14822.311.83.4
May30° / 22°7814.311.54.5
Jun31° / 21°183.711.45.4
Jul32° / 20°11211.44.9
Aug34° / 21°244.511.63.8
Sep33° / 23°8013.411.93.1
Oct32° / 23°14319.912.22.9
Nov31° / 23°21224.312.52.9
Dec30° / 23°24826.712.63.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27327
37327
47228
57228
67129
77129
87030
96931
106931
116832
126733
136634
146436
156337
166238
176139
185941
195842
205743
215644
225545
235347
245347
255248
265050
275050
285050
294852
304753

Chance of precipitation in September

Any precipitation

Ji Paraná gets around 80 mm of rain over 13.4 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 44% and peaks near 58% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
129
231
332
433
534
635
736
837
938
1038
1139
1240
1341
1442
1543
1644
1745
1846
1947
2049
2150
2251
2352
2453
2554
2655
2756
2857
2957
3058

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 87% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1461836360
2351736380
3351637390
4351536410
5341536420
6341436430
7241335450
8241335460
9241234480
10241233490
11241133500
12141032530
13141031540
1414930560
1513829590
1613729600
1703728620
1803627640
1903526660
2003524680
2103423700
2203422710
2303421720
2403319741
2502318761
2602317771
2702216791
2802215801
2902214811
3002214811

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:14 AM to 5:55 AM, and sunset from 6:01 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:146:01
211.86:136:01
311.86:136:01
411.86:126:01
511.86:116:01
611.86:116:01
711.86:106:01
811.96:096:01
911.96:096:01
1011.96:086:01
1111.96:076:01
1211.96:076:01
1311.96:066:01
1411.96:056:00
1511.96:056:00
1611.96:046:00
1712.06:036:00
1812.06:036:00
1912.06:026:00
2012.06:016:00
2112.06:016:00
2212.06:006:00
2312.05:596:00
2412.05:586:00
2512.05:586:00
2612.05:576:00
2712.15:576:00
2812.15:566:00
2912.15:556:00
3012.15:556:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.82 kWh/m².

For context, solar energy here swings from a low near 4.55 kWh/m² to a high of 5.87 kWh/m² in October across the year — September's 5.82 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Ji Paraná

In seasonPeak

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

Ji Paraná's rainy season runs October–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 Ji Paraná?

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

3.1
Sightseeing
6th-best month of the year
5.7
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Ji Paraná.

What to pack for Ji Paraná in September

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

In September, Ji Paraná sees daytime highs around 33°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Ji Paraná in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ji Paraná peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 13 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 23UV 15Sep 13UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug7High
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Ji Paraná 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 Ji Paraná is worst in September — around 52 µg/m³ PM2.5 (poor), about 6.8× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModeratePoorModerateSep 1449 µg/m³Jun 228 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar12Moderate
Apr10Good
May9Good
Jun8Good
Jul8Good
Aug35Moderate
Sep52Poor
Oct22Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Ji Paraná?

Ji Paraná sits at 10.9°S, 62.0°W, 157 m above sea level, in Brazil. The nearest listed city is Ouro Preto do Oeste, 33 km away.

Topography around Ji Paraná

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

Within 3 km, the terrain around Ji Paraná has only modest variations in elevation — a maximum elevation change of 53 m around an average of 151 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 166 m; within 80 km, significant variations in elevation — a maximum elevation change of 462 m.

The land around Ji Paraná is covered by artificial surfaces (43%) and trees (32%) within 3 km, grassland (67%) and trees (27%) within 16 km, and grassland (62%) and trees (37%) within 80 km.

3 km
53 m
16 km
166 m
80 km
462 m
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Ouro Preto do Oeste 33 km · Presidente Médici 33 km · Jaru 75 km · Cacoal 83 km · Rolim de Moura 103 km · Pimenta Bueno 120 km · Alta Floresta d'Oeste 120 km · São Miguel do Guaporé 122 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 Ji Paraná (-10.8853°, -61.9517°, elevation 157 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).