Laranjal do Jari weather in September

In September, Laranjal do Jari sees average daytime highs of 33°C and overnight lows near 24°C, with 17 mm of rain across 3.7 wet days and about 12 hours of daylight. It is the 3rd-warmest and 12th-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 57% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Laranjal do Jari's 1st-clearest and 2nd-windiest month. For the whole year in context, see Laranjal do Jari's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
24°
9th coldest
Rainfall
17 mm
3.7 wet days
Daylight
12 hours
6:24 AM – 6:24 PM
Cloud cover
43%
1st clearest
Wind
9 km/h
2nd windiest
Solar energy
6.11 kWh/m²
Travel score
4.0
out of 10

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 Laranjal do Jari reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 34°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253424
263424
273424
283424
293424
303424

How September really feels in Laranjal do Jari

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.

Laranjal do Jari weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°16323123.1
Feb30° / 23°20923.5123.1
Mar30° / 23°25826.8123.0
Apr30° / 23°29327.7122.8
May30° / 23°25726.9123.0
Jun30° / 23°13322.1123.4
Jul31° / 23°9117.6123.9
Aug32° / 23°337.9124.3
Sep33° / 24°173.7124.0
Oct34° / 24°204.6123.7
Nov33° / 24°336123.6
Dec32° / 24°7712.5123.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 19%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38416
48317
58317
68317
78317
88317
98317
108317
118218
128218
138119
148119
158218
168218
178119
188119
198119
208020
218020
227921
237921
247921
257822
267822
277723
287723
297525
307426

Chance of precipitation in September

Any precipitation

Laranjal do Jari gets around 17 mm of rain over 3.7 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 13% and peaks near 16% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
116
216
316
416
516
615
715
815
915
1014
1114
1214
1314
1413
1513
1612
1712
1812
1911
2011
2111
2210
2310
2410
2510
2610
2710
2810
2911
3011

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 89% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
15932
25932
36922
46922
56922
67912
77912
87912
98902
108902
118902
129892
139892
149892
1510891
1610891
1710891
1810891
1911890
2011890
2111890
2212880
2312880
2413870
2513870
2614860
2714860
2815850
2915850
3016840

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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours 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 0 minutes over September. Sunrise moves from 6:30 AM to 6:19 AM, and sunset from 6:29 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:306:29
212.06:306:29
312.06:296:29
412.06:296:28
512.06:296:28
612.06:286:28
712.06:286:27
812.06:286:27
912.06:276:27
1012.06:276:26
1112.06:266:26
1212.06:266:26
1312.06:266:25
1412.06:256:25
1512.06:256:25
1612.06:246:24
1712.06:246:24
1812.06:246:24
1912.06:236:23
2012.06:236:23
2112.06:236:22
2212.06:226:22
2312.06:226:22
2412.06:216:21
2512.06:216:21
2612.06:216:21
2712.06:206:20
2812.06:206:20
2912.06:196:20
3012.06:196:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.11 kWh/m².

For context, solar energy here swings from a low near 3.85 kWh/m² to a high of 6.26 kWh/m² in October across the year — September's 6.11 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
66.0Bright
76.0Bright
86.0Bright
96.0Intense
106.0Intense
116.0Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Laranjal do Jari

In seasonPeak

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

Laranjal do Jari's monsoon runs January–June, 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 Laranjal do Jari?

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

4.0
Sightseeing
2nd-best month of the year
7.3
Beach & pool
1st-best month of the year

September is a reasonable time to visit Laranjal do Jari for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Laranjal do Jari in September

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

In September, Laranjal do Jari sees daytime highs around 33°C and nights near 24°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Laranjal do Jari 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 Laranjal do Jari peaks around March 13 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 13UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Laranjal do Jari 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 Laranjal do Jari is worst in February — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2217 µg/m³Jul 218 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar17Moderate
Apr15Moderate
May10Good
Jun9Good
Jul8Good
Aug8Good
Sep10Good
Oct13Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Laranjal do Jari?

Laranjal do Jari sits at 0.8°S, 52.5°W, 79 m above sea level, in Brazil. The nearest listed city is Almeirim, 78 km away.

Topography around Laranjal do Jari

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

Within 3 km, the terrain around Laranjal do Jari has only modest variations in elevation — a maximum elevation change of 101 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 245 m; within 80 km, large variations in elevation — a maximum elevation change of 634 m.

The land around Laranjal do Jari is covered by trees (59%) within 3 km, trees (83%) within 16 km, and trees (88%) within 80 km.

3 km
101 m
16 km
245 m
80 km
634 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Almeirim 78 km · Porto de Moz 107 km · Gurupá 116 km · Prainha 153 km · Mazagão 157 km · Santana 172 km · Macapá 187 km · Senador José Porfírio 206 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 Laranjal do Jari (-0.826°, -52.506°, elevation 79 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).