Anajatuba weather in September

In September, Anajatuba sees average daytime highs of 35°C and overnight lows near 25°C, with 8 mm of rain across 1.8 wet days and about 12 hours of daylight. It is the 2nd-warmest and 12th-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 61% 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 Anajatuba's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Anajatuba's year-round climate.

Daytime high
35°
2nd warmest
Overnight low
25°
9th coldest
Rainfall
8 mm
1.8 wet days
Daylight
12 hours
5:53 AM – 5:52 PM
Cloud cover
38%
2nd clearest
Wind
11 km/h
2nd windiest
Solar energy
6.16 kWh/m²
Travel score
3.4
out of 10

Anajatuba 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 35°C through the month.

A typical September day in Anajatuba reaches about 35°C in the afternoon and slips back to 25°C overnight — a 10°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 about 1°C warmer than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13424
23424
33424
43425
53425
63425
73425
83525
93525
103525
113525
123525
133525
143525
153525
163525
173525
183525
193525
203525
213525
223525
233525
243525
253525
263525
273525
283525
293525
303525

How September really feels in Anajatuba

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
20 feel dangerously hot (≥ 39°C)
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.

Anajatuba weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°23624.812.22.6
Feb31° / 24°28024.812.12.5
Mar31° / 24°36829.4122.4
Apr31° / 24°35427.811.92.4
May31° / 24°20822.411.93.0
Jun31° / 24°7413.111.84.1
Jul32° / 23°438.211.84.4
Aug33° / 24°122.811.94.1
Sep35° / 25°81.8123.4
Oct35° / 25°183.712.13.0
Nov34° / 25°416.812.13.0
Dec33° / 25°9114.112.22.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 28% of September, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1928
2928
3928
4928
5928
6928
7928
8919
9919
10919
11919
129010
139010
149010
158911
168911
178812
188812
198812
208713
218713
228713
238713
248713
258713
268713
278713
288713
298614
308614

Chance of precipitation in September

Any precipitation

Anajatuba gets around 8 mm of rain over 1.8 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 6% and peaks near 8% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
17
27
37
46
56
65
75
85
95
105
115
125
135
145
156
166
176
186
197
207
217
227
237
248
258
268
278
288
298
308

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 85% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
113861
214851
314851
415841
516831
616831
717830
818820
918820
1018820
1118820
1218820
1318820
1418820
1517830
1617830
1717830
1816840
1915850
2015850
2114860
2213870
2313870
2412880
2511890
2611890
2710900
2810900
2910900
3010900

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 6:00 AM to 5:47 AM, and sunset from 5:56 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:005:56
211.96:005:56
311.95:595:56
411.95:595:56
511.95:585:55
612.05:585:55
712.05:575:55
812.05:575:54
912.05:575:54
1012.05:565:54
1112.05:565:54
1212.05:555:53
1312.05:555:53
1412.05:545:53
1512.05:545:53
1612.05:535:52
1712.05:535:52
1812.05:525:52
1912.05:525:51
2012.05:515:51
2112.05:515:51
2212.05:515:51
2312.05:505:50
2412.05:505:50
2512.05:495:50
2612.05:495:50
2712.05:485:49
2812.05:485:49
2912.05:475:49
3012.05:475:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.16 kWh/m².

For context, solar energy here swings from a low near 4.27 kWh/m² to a high of 6.2 kWh/m² in October across the year — September's 6.16 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
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 Anajatuba

In seasonPeak

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

Anajatuba's monsoon runs January–May, 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 Anajatuba?

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

3.4
Sightseeing
4th-best month of the year
7.0
Beach & pool
3rd-best month of the year

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

What to pack for Anajatuba in September

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

In September, Anajatuba sees daytime highs around 35°C and nights near 25°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Anajatuba 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 Anajatuba peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 18UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Anajatuba 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 Anajatuba is worst in February — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (June, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2017 µg/m³Jun 149 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar17Moderate
Apr14Moderate
May10Good
Jun9Good
Jul11Good
Aug10Good
Sep10Good
Oct12Moderate
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Anajatuba?

Anajatuba sits at 3.3°S, 44.6°W, 11 m above sea level, in Brazil. The nearest listed city is Arari, 28 km away.

Topography around Anajatuba

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

Within 3 km, the terrain around Anajatuba has only modest variations in elevation — a maximum elevation change of 57 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 81 m; within 80 km, only modest variations in elevation — a maximum elevation change of 117 m.

The land around Anajatuba is covered by wetland (38%), grassland (31%) and trees (22%) within 3 km, grassland (40%) and wetland (23%) within 16 km, and trees (44%) and grassland (31%) within 80 km.

3 km
57 m
16 km
81 m
80 km
117 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Arari 28 km · Itapecuru Mirim 32 km · Miranda do Norte 34 km · Vitória do Mearim 35 km · Santa Rita 36 km · São João Batista 40 km · Matões do Norte 42 km · Viana 43 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 Anajatuba (-3.2644°, -44.6197°, elevation 11 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).