Serra Preta weather in September

In September, Serra Preta sees average daytime highs of 29°C and overnight lows near 20°C, with 26 mm of rain across 9.6 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 23% of the time in September, and the air most often feels muggy.

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 Serra Preta's 2nd-clearest and 1st-windiest month. For the whole year in context, see Serra Preta's year-round climate.

Daytime high: 29°; 8th warmest
Overnight low: 20°; 3rd coldest
Rainfall: 26 mm; 9.6 wet days
Daylight: 11 h 54 min; 5:34 AM – 5:30 PM
Cloud cover: 54%; 2nd clearest
Wind: 11 km/h; 1st windiest
Solar energy: 4.96 kWh/m²
Travel score: 5.5; out of 10

← August Serra Preta 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 28°C in the first days to 30°C by the end.

A typical September day in Serra Preta reaches about 29°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°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)	28	28	28	28	28	28	28	28	29	29	29	29	29	29	29	29	29	29	29	30	30	30	30	30	30	30	30	30	30	30
Avg low (°C)	19	19	19	19	19	19	19	19	19	19	19	19	19	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20

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

How September really feels in Serra Preta

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.

Serra Preta weather by month

How September compares with the rest of the year at a glance. September is the 8th-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	33° / 22°	64	10.2	12.6	3.7
Feb	33° / 23°	44	10	12.4	3.5
Mar	33° / 23°	62	12.6	12.1	3.5
Apr	31° / 22°	51	14.8	11.7	4.0
May	29° / 21°	50	14.1	11.4	5.1
Jun	27° / 20°	49	15.6	11.3	5.7
Jul	27° / 19°	41	15.2	11.4	5.9
Aug	27° / 19°	36	14	11.6	5.9
Sep	29° / 20°	26	9.6	11.9	5.5
Oct	31° / 21°	28	7.8	12.3	4.7
Nov	32° / 22°	52	8.5	12.6	4.1
Dec	32° / 22°	49	8.4	12.7	3.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 41% of September, with mostly cloudy or overcast conditions the remaining 36%. 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 (%)	62	62	61	61	60	61	60	60	59	59	60	60	61	62	63	63	64	65	65	65	66	67	66	67	67	68	68	68	68	68
Cloudier (%)	38	38	39	39	40	39	40	40	41	41	40	40	39	38	37	37	36	35	35	35	34	33	34	33	33	32	32	32	32	32

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	61	39
4	61	39
5	60	40
6	61	39
7	60	40
8	60	40
9	59	41
10	59	41
11	60	40
12	60	40
13	61	39
14	62	38
15	63	37
16	63	37
17	64	36
18	65	35
19	65	35
20	65	35
21	66	34
22	67	33
23	66	34
24	67	33
25	67	33
26	68	32
27	68	32
28	68	32
29	68	32
30	68	32

Chance of precipitation in September

Any precipitation

Serra Preta gets around 26 mm of rain over 9.6 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 32% and peaks near 39% 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 (%)	39	38	38	38	38	38	38	37	37	37	36	35	35	34	34	33	32	31	30	29	28	28	27	26	26	26	25	25	25	25

	Rain chance (%)
1	39
2	38
3	38
4	38
5	38
6	38
7	38
8	37
9	37
10	37
11	36
12	35
13	35
14	34
15	34
16	33
17	32
18	31
19	30
20	29
21	28
22	28
23	27
24	26
25	26
26	26
27	25
28	25
29	25
30	25

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 78% of days. Sticky, muggy-or-worse air turns up on roughly 80% 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 (%)	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Humid (%)	24	24	23	23	23	23	22	22	22	21	21	21	20	20	19	19	19	19	18	18	18	18	17	17	17	17	16	16	16	15
Muggy (%)	74	74	75	75	75	75	76	76	76	78	78	78	79	79	80	80	80	80	81	81	81	80	81	80	80	79	80	79	79	79
Oppressive (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	3	3	4	4	5	5	6

	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	1	24	74	1
2	1	24	74	1
3	1	23	75	1
4	1	23	75	1
5	1	23	75	1
6	1	23	75	1
7	1	22	76	1
8	1	22	76	1
9	1	22	76	1
10	0	21	78	1
11	0	21	78	1
12	0	21	78	1
13	0	20	79	1
14	0	20	79	1
15	0	19	80	1
16	0	19	80	1
17	0	19	80	1
18	0	19	80	1
19	0	18	81	1
20	0	18	81	1
21	0	18	81	1
22	0	18	80	2
23	0	17	81	2
24	0	17	80	3
25	0	17	80	3
26	0	17	79	4
27	0	16	80	4
28	0	16	79	5
29	0	16	79	5
30	0	15	79	6

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 11 km/h on the calmest days to 11 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)	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

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 5:44 AM to 5:24 AM, and sunset from 5:30 PM to 5:30 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	11.8	11.8	11.8	11.8	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.1	12.1	12.1	12.1
Sunrise (AM)	5:44	5:43	5:43	5:42	5:41	5:41	5:40	5:39	5:39	5:38	5:37	5:37	5:36	5:35	5:34	5:34	5:33	5:32	5:31	5:31	5:30	5:29	5:29	5:28	5:27	5:27	5:26	5:25	5:24	5:24
Sunset (PM)	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:30	5:29	5:29	5:29	5:29	5:29	5:29	5:30

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.8	5:44	5:30
2	11.8	5:43	5:30
3	11.8	5:43	5:30
4	11.8	5:42	5:30
5	11.8	5:41	5:30
6	11.8	5:41	5:30
7	11.8	5:40	5:30
8	11.8	5:39	5:30
9	11.9	5:39	5:30
10	11.9	5:38	5:30
11	11.9	5:37	5:30
12	11.9	5:37	5:30
13	11.9	5:36	5:30
14	11.9	5:35	5:30
15	11.9	5:34	5:30
16	11.9	5:34	5:30
17	11.9	5:33	5:30
18	12.0	5:32	5:30
19	12.0	5:31	5:30
20	12.0	5:31	5:30
21	12.0	5:30	5:30
22	12.0	5:29	5:30
23	12.0	5:29	5:30
24	12.0	5:28	5:29
25	12.0	5:27	5:29
26	12.0	5:27	5:29
27	12.1	5:26	5:29
28	12.1	5:25	5:29
29	12.1	5:24	5:29
30	12.1	5:24	5:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.96 kWh/m².

For context, solar energy here swings from a low near 3.51 kWh/m² to a high of 6.04 kWh/m² in December across the year — September's 4.96 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)	4.6	4.6	4.6	4.7	4.7	4.7	4.7	4.7	4.7	4.8	4.8	4.8	4.9	4.9	4.9	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	5.4	5.4
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	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.6	Bright
2	4.6	Bright
3	4.6	Bright
4	4.7	Bright
5	4.7	Bright
6	4.7	Bright
7	4.7	Bright
8	4.7	Bright
9	4.7	Bright
10	4.8	Bright
11	4.8	Bright
12	4.8	Bright
13	4.9	Bright
14	4.9	Bright
15	4.9	Bright
16	5.0	Bright
17	5.0	Bright
18	5.0	Bright
19	5.1	Bright
20	5.1	Bright
21	5.2	Bright
22	5.2	Bright
23	5.2	Bright
24	5.3	Bright
25	5.3	Bright
26	5.3	Bright
27	5.3	Bright
28	5.3	Bright
29	5.4	Bright
30	5.4	Bright

Planning a trip in September

Is September a good time to visit Serra Preta?

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

5.5

Sightseeing

4th-best month of the year

7.0

Beach & pool

2nd-best month of the year

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

What to pack for Serra Preta in September

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

In September, Serra Preta sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Serra Preta in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Serra Preta peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 9 (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	14	12	9	9	9	10	11	12	13	12
Level	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	15	Extreme
Mar	14	Extreme
Apr	12	Extreme
May	9	Very high
Jun	9	Very high
Jul	9	Very high
Aug	10	Very high
Sep	11	Extreme
Oct	12	Extreme
Nov	13	Extreme
Dec	12	Extreme

Location & terrain

Where is Serra Preta?

Serra Preta sits at 12.2°S, 39.3°W, 285 m above sea level, in Brazil. The nearest listed city is Santo Estêvão, 31 km away.

Topography around Serra Preta

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

Within 3 km, the terrain around Serra Preta has significant variations in elevation — a maximum elevation change of 379 m around an average of 330 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 487 m; within 80 km, large variations in elevation — a maximum elevation change of 818 m.

The land around Serra Preta is covered by grassland (51%) and trees (45%) within 3 km, grassland (77%) within 16 km, and grassland (81%) within 80 km.

3 km

379 m

grassland 51%

16 km

487 m

grassland 77%

80 km

818 m

grassland 81%

treesshrubsgrasslandcroplandartificial surfaceswater

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

September weather nearby: Santo Estêvão 31 km · Rafael Jambeiro 33 km · Riachão do Jacuípe 40 km · Feira de Santana 41 km · Ipirá 44 km · Cabaceiras do Paraguaçu 44 km · Santa Bárbara 45 km · São Gonçalo dos Campos 51 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 Serra Preta (-12.1603°, -39.3317°, elevation 285 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	28	19
2	28	19
3	28	19
4	28	19
5	28	19
6	28	19
7	28	19
8	28	19
9	29	19
10	29	19
11	29	19
12	29	19
13	29	19
14	29	20
15	29	20
16	29	20
17	29	20
18	29	20
19	29	20
20	30	20
21	30	20
22	30	20
23	30	20
24	30	20
25	30	20
26	30	20
27	30	20
28	30	20
29	30	20
30	30	20

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	61	39
4	61	39
5	60	40
6	61	39
7	60	40
8	60	40
9	59	41
10	59	41
11	60	40
12	60	40
13	61	39
14	62	38
15	63	37
16	63	37
17	64	36
18	65	35
19	65	35
20	65	35
21	66	34
22	67	33
23	66	34
24	67	33
25	67	33
26	68	32
27	68	32
28	68	32
29	68	32
30	68	32

	Rain chance (%)
1	39
2	38
3	38
4	38
5	38
6	38
7	38
8	37
9	37
10	37
11	36
12	35
13	35
14	34
15	34
16	33
17	32
18	31
19	30
20	29
21	28
22	28
23	27
24	26
25	26
26	26
27	25
28	25
29	25
30	25

	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	1	24	74	1
2	1	24	74	1
3	1	23	75	1
4	1	23	75	1
5	1	23	75	1
6	1	23	75	1
7	1	22	76	1
8	1	22	76	1
9	1	22	76	1
10	0	21	78	1
11	0	21	78	1
12	0	21	78	1
13	0	20	79	1
14	0	20	79	1
15	0	19	80	1
16	0	19	80	1
17	0	19	80	1
18	0	19	80	1
19	0	18	81	1
20	0	18	81	1
21	0	18	81	1
22	0	18	80	2
23	0	17	81	2
24	0	17	80	3
25	0	17	80	3
26	0	17	79	4
27	0	16	80	4
28	0	16	79	5
29	0	16	79	5
30	0	15	79	6

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

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	61	39
4	61	39
5	60	40
6	61	39
7	60	40
8	60	40
9	59	41
10	59	41
11	60	40
12	60	40
13	61	39
14	62	38
15	63	37
16	63	37
17	64	36
18	65	35
19	65	35
20	65	35
21	66	34
22	67	33
23	66	34
24	67	33
25	67	33
26	68	32
27	68	32
28	68	32
29	68	32
30	68	32

	Rain chance (%)
1	39
2	38
3	38
4	38
5	38
6	38
7	38
8	37
9	37
10	37
11	36
12	35
13	35
14	34
15	34
16	33
17	32
18	31
19	30
20	29
21	28
22	28
23	27
24	26
25	26
26	26
27	25
28	25
29	25
30	25

	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	1	24	74	1
2	1	24	74	1
3	1	23	75	1
4	1	23	75	1
5	1	23	75	1
6	1	23	75	1
7	1	22	76	1
8	1	22	76	1
9	1	22	76	1
10	0	21	78	1
11	0	21	78	1
12	0	21	78	1
13	0	20	79	1
14	0	20	79	1
15	0	19	80	1
16	0	19	80	1
17	0	19	80	1
18	0	19	80	1
19	0	18	81	1
20	0	18	81	1
21	0	18	81	1
22	0	18	80	2
23	0	17	81	2
24	0	17	80	3
25	0	17	80	3
26	0	17	79	4
27	0	16	80	4
28	0	16	79	5
29	0	16	79	5
30	0	15	79	6

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

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	61	39
4	61	39
5	60	40
6	61	39
7	60	40
8	60	40
9	59	41
10	59	41
11	60	40
12	60	40
13	61	39
14	62	38
15	63	37
16	63	37
17	64	36
18	65	35
19	65	35
20	65	35
21	66	34
22	67	33
23	66	34
24	67	33
25	67	33
26	68	32
27	68	32
28	68	32
29	68	32
30	68	32

	Rain chance (%)
1	39
2	38
3	38
4	38
5	38
6	38
7	38
8	37
9	37
10	37
11	36
12	35
13	35
14	34
15	34
16	33
17	32
18	31
19	30
20	29
21	28
22	28
23	27
24	26
25	26
26	26
27	25
28	25
29	25
30	25

	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	1	24	74	1
2	1	24	74	1
3	1	23	75	1
4	1	23	75	1
5	1	23	75	1
6	1	23	75	1
7	1	22	76	1
8	1	22	76	1
9	1	22	76	1
10	0	21	78	1
11	0	21	78	1
12	0	21	78	1
13	0	20	79	1
14	0	20	79	1
15	0	19	80	1
16	0	19	80	1
17	0	19	80	1
18	0	19	80	1
19	0	18	81	1
20	0	18	81	1
21	0	18	81	1
22	0	18	80	2
23	0	17	81	2
24	0	17	80	3
25	0	17	80	3
26	0	17	79	4
27	0	16	80	4
28	0	16	79	5
29	0	16	79	5
30	0	15	79	6