Irauçuba weather in September

In September, Irauçuba sees average daytime highs of 34°C and overnight lows near 23°C, with 1 mm of rain across 0.1 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 34°C through the month. The sky is clear or mostly clear about 82% of the time in September, and the air most often feels muggy.

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 Irauçuba's 1st-clearest and 1st-windiest month. For the whole year in context, see Irauçuba's year-round climate.

Daytime high: 34°; 3rd warmest
Overnight low: 23°; 8th coldest
Rainfall: 1 mm; 0.1 wet days
Daylight: 12 hours; 5:34 AM – 5:33 PM
Cloud cover: 24%; 1st clearest
Wind: 18 km/h; 1st windiest
Solar energy: 6.81 kWh/m²
Travel score: 4.3; out of 10

Irauçuba is settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Irauçuba year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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 Irauçuba reaches about 34°C in the afternoon and slips back to 23°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 34°C. Set against its neighbours, September runs on par with August and on par with October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	33	33	33	33	33	33	33	33	33	33	33	33	34	34	34	34	34	34	34	34	34	34	34	34	34	34	34	34	34	34
Avg low (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	33	23
2	33	23
3	33	23
4	33	23
5	33	23
6	33	23
7	33	23
8	33	23
9	33	23
10	33	23
11	33	23
12	33	23
13	34	23
14	34	23
15	34	23
16	34	23
17	34	23
18	34	23
19	34	23
20	34	23
21	34	23
22	34	23
23	34	23
24	34	23
25	34	23
26	34	23
27	34	23
28	34	23
29	34	23
30	34	23

How September really feels in Irauçuba

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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Irauçuba 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	32° / 24°	108	16.3	12.2	3.5
Feb	31° / 23°	145	19.1	12.1	3.4
Mar	30° / 23°	219	24.8	12	3.2
Apr	30° / 23°	221	23.1	11.9	3.4
May	30° / 23°	92	14.9	11.8	4.3
Jun	31° / 23°	27	6.2	11.8	5.1
Jul	32° / 23°	15	3.1	11.8	5.1
Aug	33° / 23°	4	0.7	11.9	4.7
Sep	34° / 23°	1	0.1	12	4.3
Oct	34° / 24°	3	0.4	12.1	4.0
Nov	34° / 24°	4	0.9	12.2	3.9
Dec	33° / 24°	24	4.9	12.2	3.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 5%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	93	93	93	93	93	94	94	94	94	94	94	94	94	95	95	95	95	96	96	96	96	96	96	96	95	95	95	95	94	94
Cloudier (%)	7	7	7	7	7	6	6	6	6	6	6	6	6	5	5	5	5	4	4	4	4	4	4	4	5	5	5	5	6	6

	Clearer (%)	Cloudier (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	94	6
7	94	6
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	96	4
19	96	4
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	95	5
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6

Chance of precipitation in September

Any precipitation

Irauçuba gets around 1 mm of rain over 0.1 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 1% and peaks near 1% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Humid (%)	32	32	33	33	33	33	33	33	32	32	31	30	28	27	26	25	23	22	21	20	19	18	17	16	16	15	15	14	14	14
Muggy (%)	67	67	67	67	67	67	67	67	68	68	69	70	71	72	73	74	76	77	78	79	80	81	82	83	82	83	83	84	84	84
Oppressive (%)	1	1	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2

	Humid (%)	Muggy (%)	Oppressive (%)
1	32	67	1
2	32	67	1
3	33	67	0
4	33	67	0
5	33	67	0
6	33	67	0
7	33	67	0
8	33	67	0
9	32	68	0
10	32	68	0
11	31	69	0
12	30	70	0
13	28	71	1
14	27	72	1
15	26	73	1
16	25	74	1
17	23	76	1
18	22	77	1
19	21	78	1
20	20	79	1
21	19	80	1
22	18	81	1
23	17	82	1
24	16	83	1
25	16	82	2
26	15	83	2
27	15	83	2
28	14	84	2
29	14	84	2
30	14	84	2

Wind in September

Winds average 18 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	18	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	19	19	19	19	18	18	18	18	18	18	18	18	18	18
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	18	light breeze
2	18	light breeze
3	18	light breeze
4	18	light breeze
5	18	light breeze
6	18	light breeze
7	18	light breeze
8	18	light breeze
9	18	light breeze
10	19	light breeze
11	19	light breeze
12	19	light breeze
13	19	light breeze
14	19	light breeze
15	19	light breeze
16	19	light breeze
17	19	light breeze
18	19	light breeze
19	19	light breeze
20	19	light breeze
21	18	light breeze
22	18	light breeze
23	18	light breeze
24	18	light breeze
25	18	light breeze
26	18	light breeze
27	18	light breeze
28	18	light breeze
29	18	light breeze
30	18	light breeze

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 5:41 AM to 5:28 AM, and sunset from 5:37 PM to 5:29 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	11.9	11.9	11.9	11.9	11.9	11.9	11.9	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	5:41	5:41	5:40	5:40	5:39	5:39	5:38	5:38	5:37	5:37	5:36	5:36	5:35	5:35	5:35	5:34	5:34	5:33	5:33	5:32	5:32	5:31	5:31	5:30	5:30	5:29	5:29	5:28	5:28	5:28
Sunset (PM)	5:37	5:36	5:36	5:36	5:36	5:35	5:35	5:35	5:35	5:34	5:34	5:34	5:34	5:33	5:33	5:33	5:33	5:32	5:32	5:32	5:32	5:31	5:31	5:31	5:31	5:30	5:30	5:30	5:30	5:29

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.9	5:41	5:37
2	11.9	5:41	5:36
3	11.9	5:40	5:36
4	11.9	5:40	5:36
5	11.9	5:39	5:36
6	11.9	5:39	5:35
7	11.9	5:38	5:35
8	12.0	5:38	5:35
9	12.0	5:37	5:35
10	12.0	5:37	5:34
11	12.0	5:36	5:34
12	12.0	5:36	5:34
13	12.0	5:35	5:34
14	12.0	5:35	5:33
15	12.0	5:35	5:33
16	12.0	5:34	5:33
17	12.0	5:34	5:33
18	12.0	5:33	5:32
19	12.0	5:33	5:32
20	12.0	5:32	5:32
21	12.0	5:32	5:32
22	12.0	5:31	5:31
23	12.0	5:31	5:31
24	12.0	5:30	5:31
25	12.0	5:30	5:31
26	12.0	5:29	5:30
27	12.0	5:29	5:30
28	12.0	5:28	5:30
29	12.0	5:28	5:30
30	12.0	5:28	5:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.81 kWh/m².

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 6.82 kWh/m² in October across the year — September's 6.81 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	6.6	6.6	6.6	6.7	6.7	6.7	6.7	6.7	6.7	6.7	6.8	6.8	6.8	6.8	6.8	6.8	6.8	6.8	6.8	6.8	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.6	Intense
2	6.6	Intense
3	6.6	Intense
4	6.7	Intense
5	6.7	Intense
6	6.7	Intense
7	6.7	Intense
8	6.7	Intense
9	6.7	Intense
10	6.7	Intense
11	6.8	Intense
12	6.8	Intense
13	6.8	Intense
14	6.8	Intense
15	6.8	Intense
16	6.8	Intense
17	6.8	Intense
18	6.8	Intense
19	6.8	Intense
20	6.8	Intense
21	6.9	Intense
22	6.9	Intense
23	6.9	Intense
24	6.9	Intense
25	6.9	Intense
26	6.9	Intense
27	6.9	Intense
28	6.9	Intense
29	6.9	Intense
30	6.9	Intense

Planning a trip in September

Hazard calendar for Irauçuba

In seasonPeak

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

Irauçuba's monsoon runs January–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 Irauçuba?

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

4.3

Sightseeing

4th-best month of the year

8.1

Beach & pool

2nd-best month of the year

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

What to pack for Irauçuba in September

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

In September, Irauçuba sees daytime highs around 34°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Irauçuba 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 Irauçuba peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	14	16	14	11	10	10	11	12	12	12	11
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	14	Extreme
Mar	16	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Very high
Jul	10	Very high
Aug	11	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	12	Extreme
Dec	11	Extreme

Location & terrain

Where is Irauçuba?

Irauçuba sits at 3.7°S, 39.8°W, 150 m above sea level, in Brazil. The nearest listed city is Itapagé, 23 km away.

Topography around Irauçuba

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

Within 3 km, the terrain around Irauçuba has significant variations in elevation — a maximum elevation change of 385 m around an average of 165 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 813 m; within 80 km, large variations in elevation — a maximum elevation change of 1,065 m.

The land around Irauçuba is covered by grassland (71%) and shrubs (21%) within 3 km, shrubs (51%) and grassland (39%) within 16 km, and shrubs (62%) and grassland (21%) within 80 km.

3 km

385 m

grassland 71%

16 km

813 m

shrubs 51%

80 km

1,065 m

shrubs 62%

treesshrubsgrasslandartificial surfacesbare terrainwater

← August Irauçuba year-round climate October →Best places to visit in September

September weather nearby: Itapagé 23 km · Uruburetama 33 km · Tejuçuoca 35 km · Itapipoca 36 km · Turaru 42 km · Amontada 43 km · Umirim 49 km · Forquilha 53 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

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 Irauçuba (-3.7461°, -39.7833°, elevation 150 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	33	23
2	33	23
3	33	23
4	33	23
5	33	23
6	33	23
7	33	23
8	33	23
9	33	23
10	33	23
11	33	23
12	33	23
13	34	23
14	34	23
15	34	23
16	34	23
17	34	23
18	34	23
19	34	23
20	34	23
21	34	23
22	34	23
23	34	23
24	34	23
25	34	23
26	34	23
27	34	23
28	34	23
29	34	23
30	34	23

	Clearer (%)	Cloudier (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	94	6
7	94	6
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	96	4
19	96	4
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	95	5
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0

	Humid (%)	Muggy (%)	Oppressive (%)
1	32	67	1
2	32	67	1
3	33	67	0
4	33	67	0
5	33	67	0
6	33	67	0
7	33	67	0
8	33	67	0
9	32	68	0
10	32	68	0
11	31	69	0
12	30	70	0
13	28	71	1
14	27	72	1
15	26	73	1
16	25	74	1
17	23	76	1
18	22	77	1
19	21	78	1
20	20	79	1
21	19	80	1
22	18	81	1
23	17	82	1
24	16	83	1
25	16	82	2
26	15	83	2
27	15	83	2
28	14	84	2
29	14	84	2
30	14	84	2

	Avg high (°C)	Avg low (°C)
1	33	23
2	33	23
3	33	23
4	33	23
5	33	23
6	33	23
7	33	23
8	33	23
9	33	23
10	33	23
11	33	23
12	33	23
13	34	23
14	34	23
15	34	23
16	34	23
17	34	23
18	34	23
19	34	23
20	34	23
21	34	23
22	34	23
23	34	23
24	34	23
25	34	23
26	34	23
27	34	23
28	34	23
29	34	23
30	34	23

	Clearer (%)	Cloudier (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	94	6
7	94	6
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	96	4
19	96	4
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	95	5
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0

	Humid (%)	Muggy (%)	Oppressive (%)
1	32	67	1
2	32	67	1
3	33	67	0
4	33	67	0
5	33	67	0
6	33	67	0
7	33	67	0
8	33	67	0
9	32	68	0
10	32	68	0
11	31	69	0
12	30	70	0
13	28	71	1
14	27	72	1
15	26	73	1
16	25	74	1
17	23	76	1
18	22	77	1
19	21	78	1
20	20	79	1
21	19	80	1
22	18	81	1
23	17	82	1
24	16	83	1
25	16	82	2
26	15	83	2
27	15	83	2
28	14	84	2
29	14	84	2
30	14	84	2

	Avg high (°C)	Avg low (°C)
1	33	23
2	33	23
3	33	23
4	33	23
5	33	23
6	33	23
7	33	23
8	33	23
9	33	23
10	33	23
11	33	23
12	33	23
13	34	23
14	34	23
15	34	23
16	34	23
17	34	23
18	34	23
19	34	23
20	34	23
21	34	23
22	34	23
23	34	23
24	34	23
25	34	23
26	34	23
27	34	23
28	34	23
29	34	23
30	34	23

	Clearer (%)	Cloudier (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	94	6
7	94	6
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	96	4
19	96	4
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	95	5
26	95	5
27	95	5
28	95	5
29	94	6
30	94	6

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0

	Humid (%)	Muggy (%)	Oppressive (%)
1	32	67	1
2	32	67	1
3	33	67	0
4	33	67	0
5	33	67	0
6	33	67	0
7	33	67	0
8	33	67	0
9	32	68	0
10	32	68	0
11	31	69	0
12	30	70	0
13	28	71	1
14	27	72	1
15	26	73	1
16	25	74	1
17	23	76	1
18	22	77	1
19	21	78	1
20	20	79	1
21	19	80	1
22	18	81	1
23	17	82	1
24	16	83	1
25	16	82	2
26	15	83	2
27	15	83	2
28	14	84	2
29	14	84	2
30	14	84	2