Iati weather in September

In September, Iati sees average daytime highs of 28°C and overnight lows near 19°C, with 12 mm of rain across 4.4 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 29°C by the end. The sky is clear or mostly clear about 30% of the time in September, and the air most often feels humid.

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

Daytime high: 28°; 8th warmest
Overnight low: 19°; 3rd coldest
Rainfall: 12 mm; 4.4 wet days
Daylight: 12 hours; 5:23 AM – 5:20 PM
Cloud cover: 50%; 2nd clearest
Wind: 14 km/h; 2nd windiest
Solar energy: 5.53 kWh/m²
Travel score: 7.0; out of 10

← August Iati 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

Highs climb over the month, from about 27°C in the first days to 29°C by the end.

A typical September day in Iati reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than 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)	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28	28	28	28	28	28	29	29	29	29	29	29	29	29
Avg low (°C)	18	18	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19

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

How September really feels in Iati

Once humidity and wind are folded in, September averages 0 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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Iati weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 21°	38	8	12.5	4.7
Feb	31° / 21°	41	8.4	12.3	4.7
Mar	31° / 21°	52	10.3	12.1	4.7
Apr	29° / 21°	56	10.9	11.8	5.1
May	28° / 20°	44	11.8	11.6	6.0
Jun	26° / 19°	40	10.9	11.5	6.5
Jul	25° / 18°	35	10.9	11.5	6.6
Aug	26° / 18°	21	8.1	11.7	6.9
Sep	28° / 19°	12	4.4	11.9	7.0
Oct	30° / 20°	12	3.2	12.2	6.0
Nov	31° / 20°	14	2.6	12.4	5.3
Dec	31° / 21°	17	4.1	12.5	4.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 37% of September, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

	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 (%)	56	57	57	57	58	58	59	59	61	61	62	64	64	66	67	68	69	70	72	72	74	75	75	76	76	77	77	77	76	77
Cloudier (%)	44	43	43	43	42	42	41	41	39	39	38	36	36	34	33	32	31	30	28	28	26	25	25	24	24	23	23	23	24	23

	Clearer (%)	Cloudier (%)
1	56	44
2	57	43
3	57	43
4	57	43
5	58	42
6	58	42
7	59	41
8	59	41
9	61	39
10	61	39
11	62	38
12	64	36
13	64	36
14	66	34
15	67	33
16	68	32
17	69	31
18	70	30
19	72	28
20	72	28
21	74	26
22	75	25
23	75	25
24	76	24
25	76	24
26	77	23
27	77	23
28	77	23
29	76	24
30	77	23

Chance of precipitation in September

Any precipitation

Iati gets around 12 mm of rain over 4.4 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 15% and peaks near 20% on the wettest days. The odds ease toward the end of the month.

	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 (%)	20	20	20	20	19	19	19	19	19	19	18	18	18	17	16	15	15	14	13	12	11	10	10	9	8	8	8	8	8	8

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

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 18% 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
Comfortable (%)	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1
Humid (%)	78	78	78	78	78	78	77	77	77	77	77	77	78	78	79	79	80	80	81	82	82	84	84	85	85	85	85	85	85	84
Muggy (%)	20	20	20	20	20	20	21	21	21	21	21	21	20	20	19	19	18	18	17	16	16	15	15	14	14	14	14	14	14	15

	Comfortable (%)	Humid (%)	Muggy (%)
1	2	78	20
2	2	78	20
3	2	78	20
4	2	78	20
5	2	78	20
6	2	78	20
7	2	77	21
8	2	77	21
9	2	77	21
10	2	77	21
11	2	77	21
12	2	77	21
13	2	78	20
14	2	78	20
15	2	79	19
16	2	79	19
17	2	80	18
18	2	80	18
19	2	81	17
20	2	82	16
21	2	82	16
22	1	84	15
23	1	84	15
24	1	85	14
25	1	85	14
26	1	85	14
27	1	85	14
28	1	85	14
29	1	85	14
30	1	84	15

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 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)	14	14	14	14	14	14	14	14	14	14	14	14	15	15	15	14	14	14	14	14	14	14	14	14	15	15	15	15	15	15
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	14	light breeze
2	14	light breeze
3	14	light breeze
4	14	light breeze
5	14	light breeze
6	14	light breeze
7	14	light breeze
8	14	light breeze
9	14	light breeze
10	14	light breeze
11	14	light breeze
12	14	light breeze
13	15	light breeze
14	15	light breeze
15	15	light breeze
16	14	light breeze
17	14	light breeze
18	14	light breeze
19	14	light breeze
20	14	light breeze
21	14	light breeze
22	14	light breeze
23	14	light breeze
24	14	light breeze
25	15	light breeze
26	15	light breeze
27	15	light breeze
28	15	light breeze
29	15	light breeze
30	15	light breeze

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 5:32 AM to 5:15 AM, and sunset from 5:22 PM to 5:19 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)	11.8	11.8	11.8	11.8	11.9	11.9	11.9	11.9	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	12.1	12.1	12.1
Sunrise (AM)	5:32	5:32	5:31	5:31	5:30	5:29	5:29	5:28	5:28	5:27	5:26	5:26	5:25	5:24	5:24	5:23	5:23	5:22	5:21	5:21	5:20	5:19	5:19	5:18	5:18	5:17	5:16	5:16	5:15	5:15
Sunset (PM)	5:22	5:22	5:22	5:22	5:21	5:21	5:21	5:21	5:21	5:21	5:21	5:21	5:21	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:19	5:19	5:19	5:19	5:19	5:19	5:19	5:19

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.8	5:32	5:22
2	11.8	5:32	5:22
3	11.8	5:31	5:22
4	11.8	5:31	5:22
5	11.9	5:30	5:21
6	11.9	5:29	5:21
7	11.9	5:29	5:21
8	11.9	5:28	5:21
9	11.9	5:28	5:21
10	11.9	5:27	5:21
11	11.9	5:26	5:21
12	11.9	5:26	5:21
13	11.9	5:25	5:21
14	11.9	5:24	5:20
15	11.9	5:24	5:20
16	12.0	5:23	5:20
17	12.0	5:23	5:20
18	12.0	5:22	5:20
19	12.0	5:21	5:20
20	12.0	5:21	5:20
21	12.0	5:20	5:20
22	12.0	5:19	5:20
23	12.0	5:19	5:19
24	12.0	5:18	5:19
25	12.0	5:18	5:19
26	12.0	5:17	5:19
27	12.0	5:16	5:19
28	12.1	5:16	5:19
29	12.1	5:15	5:19
30	12.1	5:15	5:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.53 kWh/m².

For context, solar energy here swings from a low near 3.88 kWh/m² to a high of 6.62 kWh/m² in November across the year — September's 5.53 kWh/m² falls in the middle.

	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)	5.0	5.0	5.0	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.4	5.4	5.5	5.5	5.6	5.6	5.7	5.7	5.8	5.8	5.9	5.9	6.0	6.0	6.0	6.1	6.1	6.1
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	5.1	Bright
5	5.1	Bright
6	5.1	Bright
7	5.2	Bright
8	5.2	Bright
9	5.2	Bright
10	5.2	Bright
11	5.3	Bright
12	5.3	Bright
13	5.4	Bright
14	5.4	Bright
15	5.5	Bright
16	5.5	Bright
17	5.6	Bright
18	5.6	Bright
19	5.7	Bright
20	5.7	Bright
21	5.8	Bright
22	5.8	Bright
23	5.9	Bright
24	5.9	Bright
25	6.0	Bright
26	6.0	Intense
27	6.0	Intense
28	6.1	Intense
29	6.1	Intense
30	6.1	Intense

Planning a trip in September

Is September a good time to visit Iati?

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

7.0

Sightseeing

1st-best month of the year

7.7

Beach & pool

3rd-best month of the year

September is one of the better times to visit Iati for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Iati in September

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

In September, Iati sees daytime highs around 28°C and nights near 19°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

UV index in Iati 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 Iati peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 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)	14	15	15	14	11	10	10	10	12	13	12	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Very high
Jul	10	Very high
Aug	10	Very high
Sep	12	Extreme
Oct	13	Extreme
Nov	12	Extreme
Dec	13	Extreme

Location & terrain

Where is Iati?

Iati sits at 9.0°S, 36.8°W, 490 m above sea level, in Brazil. The nearest listed city is Bom Conselho, 23 km away.

Topography around Iati

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

Within 3 km, the terrain around Iati has significant variations in elevation — a maximum elevation change of 331 m around an average of 533 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 779 m; within 80 km, large variations in elevation — a maximum elevation change of 1,009 m.

The land around Iati is covered by grassland (61%) and shrubs (22%) within 3 km, grassland (62%) and shrubs (23%) within 16 km, and grassland (65%) and shrubs (21%) within 80 km.

3 km

331 m

grassland 61%

16 km

779 m

grassland 62%

80 km

1,009 m

grassland 65%

treesshrubsgrasslandcroplandartificial surfaces

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

September weather nearby: Bom Conselho 23 km · Águas Belas 31 km · Caetés 39 km · Estrela de Alagoas 39 km · Garanhuns 42 km · Capoeiras 42 km · Venturosa 52 km · São João 56 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 Iati (-9.0458°, -36.8461°, elevation 490 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	27	18
2	27	18
3	27	19
4	27	19
5	27	19
6	27	19
7	27	19
8	27	19
9	27	19
10	27	19
11	27	19
12	27	19
13	27	19
14	28	19
15	28	19
16	28	19
17	28	19
18	28	19
19	28	19
20	28	19
21	28	19
22	28	19
23	29	19
24	29	19
25	29	19
26	29	19
27	29	19
28	29	19
29	29	19
30	29	19

	Clearer (%)	Cloudier (%)
1	56	44
2	57	43
3	57	43
4	57	43
5	58	42
6	58	42
7	59	41
8	59	41
9	61	39
10	61	39
11	62	38
12	64	36
13	64	36
14	66	34
15	67	33
16	68	32
17	69	31
18	70	30
19	72	28
20	72	28
21	74	26
22	75	25
23	75	25
24	76	24
25	76	24
26	77	23
27	77	23
28	77	23
29	76	24
30	77	23

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

	Comfortable (%)	Humid (%)	Muggy (%)
1	2	78	20
2	2	78	20
3	2	78	20
4	2	78	20
5	2	78	20
6	2	78	20
7	2	77	21
8	2	77	21
9	2	77	21
10	2	77	21
11	2	77	21
12	2	77	21
13	2	78	20
14	2	78	20
15	2	79	19
16	2	79	19
17	2	80	18
18	2	80	18
19	2	81	17
20	2	82	16
21	2	82	16
22	1	84	15
23	1	84	15
24	1	85	14
25	1	85	14
26	1	85	14
27	1	85	14
28	1	85	14
29	1	85	14
30	1	84	15

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

	Clearer (%)	Cloudier (%)
1	56	44
2	57	43
3	57	43
4	57	43
5	58	42
6	58	42
7	59	41
8	59	41
9	61	39
10	61	39
11	62	38
12	64	36
13	64	36
14	66	34
15	67	33
16	68	32
17	69	31
18	70	30
19	72	28
20	72	28
21	74	26
22	75	25
23	75	25
24	76	24
25	76	24
26	77	23
27	77	23
28	77	23
29	76	24
30	77	23

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

	Comfortable (%)	Humid (%)	Muggy (%)
1	2	78	20
2	2	78	20
3	2	78	20
4	2	78	20
5	2	78	20
6	2	78	20
7	2	77	21
8	2	77	21
9	2	77	21
10	2	77	21
11	2	77	21
12	2	77	21
13	2	78	20
14	2	78	20
15	2	79	19
16	2	79	19
17	2	80	18
18	2	80	18
19	2	81	17
20	2	82	16
21	2	82	16
22	1	84	15
23	1	84	15
24	1	85	14
25	1	85	14
26	1	85	14
27	1	85	14
28	1	85	14
29	1	85	14
30	1	84	15

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

	Clearer (%)	Cloudier (%)
1	56	44
2	57	43
3	57	43
4	57	43
5	58	42
6	58	42
7	59	41
8	59	41
9	61	39
10	61	39
11	62	38
12	64	36
13	64	36
14	66	34
15	67	33
16	68	32
17	69	31
18	70	30
19	72	28
20	72	28
21	74	26
22	75	25
23	75	25
24	76	24
25	76	24
26	77	23
27	77	23
28	77	23
29	76	24
30	77	23

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

	Comfortable (%)	Humid (%)	Muggy (%)
1	2	78	20
2	2	78	20
3	2	78	20
4	2	78	20
5	2	78	20
6	2	78	20
7	2	77	21
8	2	77	21
9	2	77	21
10	2	77	21
11	2	77	21
12	2	77	21
13	2	78	20
14	2	78	20
15	2	79	19
16	2	79	19
17	2	80	18
18	2	80	18
19	2	81	17
20	2	82	16
21	2	82	16
22	1	84	15
23	1	84	15
24	1	85	14
25	1	85	14
26	1	85	14
27	1	85	14
28	1	85	14
29	1	85	14
30	1	84	15