Major Isidoro weather in September

In September, Major Isidoro sees average daytime highs of 29°C and overnight lows near 20°C, with 22 mm of rain across 8.4 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 31°C by the end. The sky is clear or mostly clear about 31% 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 Major Isidoro's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Major Isidoro's year-round climate.

Daytime high: 29°; 9th warmest
Overnight low: 20°; 3rd coldest
Rainfall: 22 mm; 8.4 wet days
Daylight: 11 h 54 min; 5:24 AM – 5:21 PM
Cloud cover: 50%; 2nd clearest
Wind: 13 km/h; 3rd windiest
Solar energy: 5.31 kWh/m²
Travel score: 5.7; out of 10

← August Major Isidoro 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 31°C by the end.

A typical September day in Major Isidoro reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°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	30	30	30	30	30	30	30	30	31	31	31	31
Avg low (°C)	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21

	Avg high (°C)	Avg low (°C)
1	28	20
2	28	20
3	28	20
4	28	20
5	28	20
6	28	20
7	28	20
8	28	20
9	29	20
10	29	20
11	29	20
12	29	20
13	29	20
14	29	20
15	29	20
16	29	20
17	29	20
18	29	20
19	30	20
20	30	20
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	31	21
28	31	21
29	31	21
30	31	21

How September really feels in Major Isidoro

Once humidity and wind are folded in, September averages 2 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.

Major Isidoro weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	33° / 23°	34	6.3	12.5	3.7
Feb	33° / 23°	34	7.1	12.3	3.7
Mar	33° / 23°	44	9.4	12.1	3.7
Apr	31° / 23°	53	11.2	11.8	4.1
May	29° / 22°	60	14.1	11.6	4.9
Jun	27° / 21°	54	15.8	11.5	5.5
Jul	27° / 20°	51	16.5	11.5	5.7
Aug	27° / 20°	35	13.3	11.7	6.0
Sep	29° / 20°	22	8.4	11.9	5.7
Oct	32° / 21°	16	3.8	12.2	4.9
Nov	33° / 22°	22	2.8	12.4	4.2
Dec	33° / 23°	16	3.7	12.5	3.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 39% of September, with mostly cloudy or overcast conditions the remaining 30%. 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 (%)	60	61	61	61	61	61	62	63	63	64	65	66	68	68	70	71	73	74	74	75	77	78	78	79	78	78	78	78	78	77
Cloudier (%)	40	39	39	39	39	39	38	37	37	36	35	34	32	32	30	29	27	26	26	25	23	22	22	21	22	22	22	22	22	23

	Clearer (%)	Cloudier (%)
1	60	40
2	61	39
3	61	39
4	61	39
5	61	39
6	61	39
7	62	38
8	63	37
9	63	37
10	64	36
11	65	35
12	66	34
13	68	32
14	68	32
15	70	30
16	71	29
17	73	27
18	74	26
19	74	26
20	75	25
21	77	23
22	78	22
23	78	22
24	79	21
25	78	22
26	78	22
27	78	22
28	78	22
29	78	22
30	77	23

Chance of precipitation in September

Any precipitation

Major Isidoro gets around 22 mm of rain over 8.4 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 27% and peaks near 36% 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 (%)	36	35	36	36	36	36	36	35	35	34	33	32	31	30	29	28	27	25	24	23	21	20	19	18	18	17	16	15	15	14

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

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 80% of days. Sticky, muggy-or-worse air turns up on roughly 81% 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 (%)	17	17	17	18	18	18	19	19	19	20	20	20	20	20	20	20	20	20	20	20	20	20	19	19	19	19	19	18	18	18
Muggy (%)	82	82	82	81	81	81	80	80	80	79	79	79	79	79	79	79	79	79	79	79	79	79	80	80	80	80	80	81	81	81
Oppressive (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

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

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 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)	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	14	14	14	14	14	14	14	14	14	14	14	14	14
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	13	light breeze
2	13	light breeze
3	13	light breeze
4	13	light breeze
5	13	light breeze
6	13	light breeze
7	13	light breeze
8	13	light breeze
9	13	light breeze
10	13	light breeze
11	13	light breeze
12	13	light breeze
13	13	light breeze
14	13	light breeze
15	13	light breeze
16	13	light breeze
17	13	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	14	light breeze
26	14	light breeze
27	14	light breeze
28	14	light breeze
29	14	light breeze
30	14	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 5:33 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	11.9	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.1	12.1	12.1
Sunrise (AM)	5:33	5:33	5:32	5:31	5:31	5:30	5:30	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	5:17	5:17	5:16	5:16	5:15
Sunset (PM)	5:22	5:22	5:22	5:22	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	5:21	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:20	5:19

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.8	5:33	5:22
2	11.8	5:33	5:22
3	11.8	5:32	5:22
4	11.8	5:31	5:22
5	11.9	5:31	5:22
6	11.9	5:30	5:22
7	11.9	5:30	5:22
8	11.9	5:29	5:22
9	11.9	5:28	5:21
10	11.9	5:28	5:21
11	11.9	5:27	5:21
12	11.9	5:26	5:21
13	11.9	5:26	5:21
14	11.9	5:25	5:21
15	11.9	5:24	5:21
16	11.9	5:24	5:21
17	12.0	5:23	5:21
18	12.0	5:23	5:21
19	12.0	5:22	5:20
20	12.0	5:21	5:20
21	12.0	5:21	5:20
22	12.0	5:20	5:20
23	12.0	5:19	5:20
24	12.0	5:19	5:20
25	12.0	5:18	5:20
26	12.0	5:17	5:20
27	12.0	5:17	5:20
28	12.1	5:16	5:20
29	12.1	5:16	5:20
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 5.31 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 6.5 kWh/m² in November across the year — September's 5.31 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)	4.8	4.8	4.9	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.3	5.3	5.3	5.4	5.4	5.5	5.5	5.6	5.6	5.7	5.7	5.7	5.8	5.8	5.8	5.8
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	4.8	Bright
2	4.8	Bright
3	4.9	Bright
4	4.9	Bright
5	4.9	Bright
6	4.9	Bright
7	5.0	Bright
8	5.0	Bright
9	5.0	Bright
10	5.0	Bright
11	5.1	Bright
12	5.1	Bright
13	5.2	Bright
14	5.2	Bright
15	5.3	Bright
16	5.3	Bright
17	5.3	Bright
18	5.4	Bright
19	5.4	Bright
20	5.5	Bright
21	5.5	Bright
22	5.6	Bright
23	5.6	Bright
24	5.7	Bright
25	5.7	Bright
26	5.7	Bright
27	5.8	Bright
28	5.8	Bright
29	5.8	Bright
30	5.8	Bright

Planning a trip in September

Is September a good time to visit Major Isidoro?

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

5.7

Sightseeing

2nd-best month of the year

7.3

Beach & pool

3rd-best month of the year

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

What to pack for Major Isidoro in September

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

In September, Major Isidoro sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Major Isidoro 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 Major Isidoro peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 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	15	13	11	10	9	10	12	13	12	12
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	13	Extreme
May	11	Extreme
Jun	10	Very high
Jul	9	Very high
Aug	10	Very high
Sep	12	Extreme
Oct	13	Extreme
Nov	12	Extreme
Dec	12	Extreme

Location & terrain

Where is Major Isidoro?

Major Isidoro sits at 9.5°S, 37.0°W, 191 m above sea level, in Brazil. The nearest listed city is Batalha, 22 km away.

Topography around Major Isidoro

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

Within 3 km, the terrain around Major Isidoro has only modest variations in elevation — a maximum elevation change of 55 m around an average of 204 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 333 m; within 80 km, large variations in elevation — a maximum elevation change of 1,082 m.

The land around Major Isidoro is covered by grassland (72%) within 3 km, grassland (69%) and shrubs (21%) within 16 km, and grassland (72%) within 80 km.

3 km

55 m

grassland 72%

16 km

333 m

grassland 69%

80 km

1,082 m

grassland 72%

treesshrubsgrasslandcroplandartificial surfaceswater

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

September weather nearby: Batalha 22 km · Craíbas 26 km · Estrela de Alagoas 29 km · Santana do Ipanema 33 km · Olho d'Água das Flores 34 km · Igaci 39 km · Girau do Ponciano 43 km · Lagoa da Canoa 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

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 Major Isidoro (-9.5322°, -36.985°, elevation 191 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	20
2	28	20
3	28	20
4	28	20
5	28	20
6	28	20
7	28	20
8	28	20
9	29	20
10	29	20
11	29	20
12	29	20
13	29	20
14	29	20
15	29	20
16	29	20
17	29	20
18	29	20
19	30	20
20	30	20
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	31	21
28	31	21
29	31	21
30	31	21

	Clearer (%)	Cloudier (%)
1	60	40
2	61	39
3	61	39
4	61	39
5	61	39
6	61	39
7	62	38
8	63	37
9	63	37
10	64	36
11	65	35
12	66	34
13	68	32
14	68	32
15	70	30
16	71	29
17	73	27
18	74	26
19	74	26
20	75	25
21	77	23
22	78	22
23	78	22
24	79	21
25	78	22
26	78	22
27	78	22
28	78	22
29	78	22
30	77	23

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

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

	Avg high (°C)	Avg low (°C)
1	28	20
2	28	20
3	28	20
4	28	20
5	28	20
6	28	20
7	28	20
8	28	20
9	29	20
10	29	20
11	29	20
12	29	20
13	29	20
14	29	20
15	29	20
16	29	20
17	29	20
18	29	20
19	30	20
20	30	20
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	31	21
28	31	21
29	31	21
30	31	21

	Clearer (%)	Cloudier (%)
1	60	40
2	61	39
3	61	39
4	61	39
5	61	39
6	61	39
7	62	38
8	63	37
9	63	37
10	64	36
11	65	35
12	66	34
13	68	32
14	68	32
15	70	30
16	71	29
17	73	27
18	74	26
19	74	26
20	75	25
21	77	23
22	78	22
23	78	22
24	79	21
25	78	22
26	78	22
27	78	22
28	78	22
29	78	22
30	77	23

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

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

	Avg high (°C)	Avg low (°C)
1	28	20
2	28	20
3	28	20
4	28	20
5	28	20
6	28	20
7	28	20
8	28	20
9	29	20
10	29	20
11	29	20
12	29	20
13	29	20
14	29	20
15	29	20
16	29	20
17	29	20
18	29	20
19	30	20
20	30	20
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	31	21
28	31	21
29	31	21
30	31	21

	Clearer (%)	Cloudier (%)
1	60	40
2	61	39
3	61	39
4	61	39
5	61	39
6	61	39
7	62	38
8	63	37
9	63	37
10	64	36
11	65	35
12	66	34
13	68	32
14	68	32
15	70	30
16	71	29
17	73	27
18	74	26
19	74	26
20	75	25
21	77	23
22	78	22
23	78	22
24	79	21
25	78	22
26	78	22
27	78	22
28	78	22
29	78	22
30	77	23

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

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