Jacundá weather in September

In September, Jacundá sees average daytime highs of 34°C and overnight lows near 24°C, with 24 mm of rain across 4.9 wet days and about 12 hours of daylight. It is the 2nd-warmest and 10th-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 46% of the time in September, and the air most often feels oppressive.

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 Jacundá's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Jacundá's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
24°
11th coldest
Rainfall
24 mm
4.9 wet days
Daylight
12 hours
6:12 AM – 6:10 PM
Cloud cover
47%
3rd clearest
Wind
7 km/h
2nd windiest
Solar energy
6.09 kWh/m²
Travel score
3.2
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 Jacundá reaches about 34°C in the afternoon and slips back to 24°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 33°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
93524
103524
113524
123524
133524
143524
153524
163524
173524
183424
193424
203424
213424
223424
233424
243424
253424
263424
273424
283424
293424
303424

How September really feels in Jacundá

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.

Jacundá weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°32028.712.22.6
Feb30° / 23°32026.412.12.6
Mar30° / 23°36029.1122.6
Apr31° / 23°27227.411.92.6
May31° / 23°14520.311.83.2
Jun33° / 22°438.411.73.9
Jul34° / 22°214.811.83.5
Aug35° / 23°122.711.93.1
Sep34° / 24°244.9123.2
Oct34° / 24°5611.212.13.1
Nov32° / 24°13017.512.23.0
Dec31° / 23°2012412.32.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
27921
37921
47921
57921
67921
77921
87921
97921
107822
117822
127822
137822
147723
157723
167723
177624
187525
197525
207426
217327
227327
237228
247228
257030
266931
276931
286832
296733
306733

Chance of precipitation in September

Any precipitation

Jacundá gets around 24 mm of rain over 4.9 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 17% and peaks near 24% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
112
213
313
413
513
613
713
814
914
1014
1114
1214
1314
1414
1515
1615
1715
1816
1916
2017
2118
2219
2319
2420
2521
2622
2723
2823
2924
3024

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1644500
2644500
3544510
4544510
5544510
6544510
7543520
8543520
9543520
10542530
11541540
12540550
13539560
14438580
15437590
16436600
17335620
18334630
19332650
20231661
21230671
22229681
23128701
24127711
25126721
26125731
27124741
28024751
29023761
30022771

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:19 AM to 6:05 AM, and sunset from 6:14 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:196:14
211.96:186:13
311.96:186:13
411.96:176:13
511.96:176:13
611.96:166:12
711.96:166:12
811.96:156:12
911.96:156:12
1012.06:146:12
1112.06:146:11
1212.06:136:11
1312.06:136:11
1412.06:136:11
1512.06:126:10
1612.06:126:10
1712.06:116:10
1812.06:116:10
1912.06:106:09
2012.06:106:09
2112.06:096:09
2212.06:096:09
2312.06:086:08
2412.06:086:08
2512.06:076:08
2612.06:076:08
2712.06:066:07
2812.06:066:07
2912.06:056:07
3012.06:056:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.09 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 6.09 kWh/m² in September across the year — September's 6.09 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Jacundá

In seasonPeak

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

Jacundá'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 Jacundá?

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

3.2
Sightseeing
3rd-best month of the year
6.5
Beach & pool
4th-best month of the year

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

What to pack for Jacundá in September

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

In September, Jacundá sees daytime highs around 34°C and nights near 24°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Jacundá 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 Jacundá peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highMar 13UV 15Dec 10UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec10Very high

Air quality in Jacundá 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 Jacundá is worst in November — around 39 µg/m³ PM2.5 (poor), about 4.4× the cleanest month (June, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateNov 939 µg/m³Jun 139 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar13Moderate
Apr12Good
May10Good
Jun9Good
Jul11Good
Aug16Moderate
Sep24Moderate
Oct38Poor
Nov39Poor
Dec23Moderate
Location & terrain

Where is Jacundá?

Jacundá sits at 4.4°S, 49.1°W, 100 m above sea level, in Brazil. The nearest listed city is Breu Branco, 66 km away.

Topography around Jacundá

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

Within 3 km, the terrain around Jacundá has only modest variations in elevation — a maximum elevation change of 50 m around an average of 104 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 152 m; within 80 km, significant variations in elevation — a maximum elevation change of 342 m.

The land around Jacundá is covered by grassland (64%) within 3 km, grassland (63%) and trees (35%) within 16 km, and trees (48%) and grassland (42%) within 80 km.

3 km
50 m
16 km
152 m
80 km
342 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Breu Branco 66 km · Goianésia do Pará 67 km · Novo Repartimento 77 km · Itupiranga 80 km · Bom Jesus do Tocantins 88 km · Tucuruí 98 km · Marabá 104 km · Rondon do Pará 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 Jacundá (-4.447°, -49.1156°, elevation 100 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).