São Gonçalo do Amarante weather in September

In September, São Gonçalo do Amarante sees average daytime highs of 27°C and overnight lows near 24°C, with 31 mm of rain across 11.5 wet days and about 12 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 76% 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 São Gonçalo do Amarante's 1st-clearest and 1st-windiest month. For the whole year in context, see São Gonçalo do Amarante's year-round climate.

Daytime high: 27°; 9th warmest
Overnight low: 24°; 3rd coldest
Rainfall: 31 mm; 11.5 wet days
Daylight: 12 hours; 5:17 AM – 5:15 PM
Cloud cover: 32%; 1st clearest
Wind: 26 km/h; 1st windiest
Solar energy: 6.15 kWh/m²
Travel score: 6.7; out of 10

← August São Gonçalo do Amarante 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 27°C through the month.

A typical September day in São Gonçalo do Amarante reaches about 27°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°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)	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27
Avg low (°C)	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24

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

São Gonçalo do Amarante 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	28° / 25°	75	19.1	12.3	4.9
Feb	28° / 25°	101	19.2	12.2	4.5
Mar	28° / 25°	150	23.3	12	4.2
Apr	28° / 25°	183	24.5	11.9	4.0
May	28° / 25°	148	22.3	11.7	4.8
Jun	27° / 24°	155	21.9	11.7	4.9
Jul	26° / 23°	130	21	11.7	5.3
Aug	27° / 23°	51	15.1	11.8	6.2
Sep	27° / 24°	31	11.5	12	6.7
Oct	27° / 25°	24	10.3	12.1	6.8
Nov	28° / 25°	25	10.5	12.3	6.5
Dec	28° / 25°	40	14.8	12.3	5.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 7%. 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 (%)	91	92	92	92	92	92	92	92	92	93	93	93	93	94	94	94	94	94	94	94	94	94	94	95	95	95	94	94	94	94
Cloudier (%)	9	8	8	8	8	8	8	8	8	7	7	7	7	6	6	6	6	6	6	6	6	6	6	5	5	5	6	6	6	6

	Clearer (%)	Cloudier (%)
1	91	9
2	92	8
3	92	8
4	92	8
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	93	7
11	93	7
12	93	7
13	93	7
14	94	6
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	95	5
25	95	5
26	95	5
27	94	6
28	94	6
29	94	6
30	94	6

Chance of precipitation in September

Any precipitation

São Gonçalo do Amarante gets around 31 mm of rain over 11.5 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 39% and peaks near 46% 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 (%)	46	46	46	46	46	46	46	46	46	45	45	44	44	43	42	41	39	38	37	36	34	33	32	31	30	29	29	29	29	29

	Rain chance (%)
1	46
2	46
3	46
4	46
5	46
6	46
7	46
8	46
9	46
10	45
11	45
12	44
13	44
14	43
15	42
16	41
17	39
18	38
19	37
20	36
21	34
22	33
23	32
24	31
25	30
26	29
27	29
28	29
29	29
30	29

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 100% 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
Muggy (%)	50	50	51	51	51	51	51	51	50	50	50	49	49	48	48	48	47	47	47	46	46	46	45	45	45	44	43	42	41	41
Oppressive (%)	50	50	49	49	49	49	49	49	50	50	50	51	51	52	52	52	53	53	53	54	54	54	55	55	55	56	57	58	59	59

	Muggy (%)	Oppressive (%)
1	50	50
2	50	50
3	51	49
4	51	49
5	51	49
6	51	49
7	51	49
8	51	49
9	50	50
10	50	50
11	50	50
12	49	51
13	49	51
14	48	52
15	48	52
16	48	52
17	47	53
18	47	53
19	47	53
20	46	54
21	46	54
22	46	54
23	45	55
24	45	55
25	45	55
26	44	56
27	43	57
28	42	58
29	41	59
30	41	59

Wind in September

Winds average 26 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 25 km/h on the calmest days to 26 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)	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	25	25	25	25	25	25	25	25	25
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

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

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 5:24 AM to 5:09 AM, and sunset from 5:18 PM to 5:12 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	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
Sunrise (AM)	5:24	5:24	5:23	5:23	5:22	5:22	5:21	5:21	5:20	5:20	5:19	5:19	5:18	5:18	5:17	5:17	5:16	5:16	5:15	5:14	5:14	5:13	5:13	5:12	5:12	5:11	5:11	5:10	5:10	5:09
Sunset (PM)	5:18	5:17	5:17	5:17	5:17	5:17	5:17	5:16	5:16	5:16	5:16	5:16	5:15	5:15	5:15	5:15	5:14	5:14	5:14	5:14	5:14	5:13	5:13	5:13	5:13	5:13	5:13	5:12	5:12	5:12

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.9	5:24	5:18
2	11.9	5:24	5:17
3	11.9	5:23	5:17
4	11.9	5:23	5:17
5	11.9	5:22	5:17
6	11.9	5:22	5:17
7	11.9	5:21	5:17
8	11.9	5:21	5:16
9	11.9	5:20	5:16
10	11.9	5:20	5:16
11	11.9	5:19	5:16
12	11.9	5:19	5:16
13	12.0	5:18	5:15
14	12.0	5:18	5:15
15	12.0	5:17	5:15
16	12.0	5:17	5:15
17	12.0	5:16	5:14
18	12.0	5:16	5:14
19	12.0	5:15	5:14
20	12.0	5:14	5:14
21	12.0	5:14	5:14
22	12.0	5:13	5:13
23	12.0	5:13	5:13
24	12.0	5:12	5:13
25	12.0	5:12	5:13
26	12.0	5:11	5:13
27	12.0	5:11	5:13
28	12.0	5:10	5:12
29	12.0	5:10	5:12
30	12.0	5:09	5:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.15 kWh/m².

For context, solar energy here swings from a low near 4.59 kWh/m² to a high of 6.47 kWh/m² in October across the year — September's 6.15 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)	5.8	5.9	5.9	5.9	5.9	6.0	6.0	6.0	6.0	6.0	6.0	6.1	6.1	6.1	6.1	6.1	6.2	6.2	6.2	6.2	6.2	6.3	6.3	6.3	6.3	6.3	6.3	6.4	6.4	6.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	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	5.8	Bright
2	5.9	Bright
3	5.9	Bright
4	5.9	Bright
5	5.9	Bright
6	6.0	Bright
7	6.0	Bright
8	6.0	Intense
9	6.0	Intense
10	6.0	Intense
11	6.0	Intense
12	6.1	Intense
13	6.1	Intense
14	6.1	Intense
15	6.1	Intense
16	6.1	Intense
17	6.2	Intense
18	6.2	Intense
19	6.2	Intense
20	6.2	Intense
21	6.2	Intense
22	6.3	Intense
23	6.3	Intense
24	6.3	Intense
25	6.3	Intense
26	6.3	Intense
27	6.3	Intense
28	6.4	Intense
29	6.4	Intense
30	6.4	Intense

Planning a trip in September

Hazard calendar for São Gonçalo do Amarante

In seasonPeak

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

São Gonçalo do Amarante's rainy season runs February–July, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit São Gonçalo do Amarante?

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

6.7

Sightseeing

2nd-best month of the year

6.8

Beach & pool

3rd-best month of the year

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

What to pack for São Gonçalo do Amarante in September

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

In September, São Gonçalo do Amarante sees daytime highs around 27°C and nights near 24°C. Pack sun protection. Worth having: light clothes, rain gear and a windbreaker. About 12 days see rain.

sun protectionlight clothesrain geara windbreaker

Sea temperature near São Gonçalo do Amarante in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 24 km away) is warmest in March at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	28	28	29	29	28	27	27	26	26	27	27	28
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Warm	Warm	Warm	Warm	Warm	Warm

	Sea temperature (°C)	Comfort
Jan	28	Tropical
Feb	28	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	28	Tropical
Jun	27	Warm
Jul	27	Warm
Aug	26	Warm
Sep	26	Warm
Oct	27	Warm
Nov	27	Warm
Dec	28	Warm

UV index in São Gonçalo do Amarante 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 São Gonçalo do Amarante peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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	15	14	11	10	10	10	12	12	12	12
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	15	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Very high
Jul	10	Very high
Aug	10	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	12	Extreme
Dec	12	Extreme

Location & terrain

Where is São Gonçalo do Amarante?

São Gonçalo do Amarante sits at 5.8°S, 35.3°W, 15 m above sea level, in Brazil. The nearest listed city is Macaíba, 8.0 km away.

Topography around São Gonçalo do Amarante

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Gonçalo do Amarante.

Within 3 km, the terrain around São Gonçalo do Amarante has only modest variations in elevation — a maximum elevation change of 83 m around an average of 29 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 117 m; within 80 km, significant variations in elevation — a maximum elevation change of 460 m.

The land around São Gonçalo do Amarante is covered by grassland (57%) within 3 km, grassland (37%) and shrubs (20%) within 16 km, and grassland (34%), water (31%) and shrubs (27%) within 80 km.

3 km

83 m

grassland 57%

16 km

117 m

grassland 37%

80 km

460 m

grassland 34%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves

← August São Gonçalo do Amarante year-round climate October →Best places to visit in September

September weather nearby: Macaíba 8.0 km · Extremoz 10 km · Natal 13 km · Parnamirim 15 km · Ceará-Mirim 21 km · Monte Alegre 31 km · São José de Mipibu 33 km · Nísia Floresta 36 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 São Gonçalo do Amarante (-5.7933°, -35.3294°, elevation 15 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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	24
2	27	24
3	27	24
4	27	24
5	27	24
6	27	24
7	27	24
8	27	24
9	27	24
10	27	24
11	27	24
12	27	24
13	27	24
14	27	24
15	27	24
16	27	24
17	27	24
18	27	24
19	27	24
20	27	24
21	27	24
22	27	24
23	27	24
24	27	24
25	27	24
26	27	24
27	27	24
28	27	24
29	27	24
30	27	24

	Clearer (%)	Cloudier (%)
1	91	9
2	92	8
3	92	8
4	92	8
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	93	7
11	93	7
12	93	7
13	93	7
14	94	6
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	95	5
25	95	5
26	95	5
27	94	6
28	94	6
29	94	6
30	94	6

	Rain chance (%)
1	46
2	46
3	46
4	46
5	46
6	46
7	46
8	46
9	46
10	45
11	45
12	44
13	44
14	43
15	42
16	41
17	39
18	38
19	37
20	36
21	34
22	33
23	32
24	31
25	30
26	29
27	29
28	29
29	29
30	29

	Muggy (%)	Oppressive (%)
1	50	50
2	50	50
3	51	49
4	51	49
5	51	49
6	51	49
7	51	49
8	51	49
9	50	50
10	50	50
11	50	50
12	49	51
13	49	51
14	48	52
15	48	52
16	48	52
17	47	53
18	47	53
19	47	53
20	46	54
21	46	54
22	46	54
23	45	55
24	45	55
25	45	55
26	44	56
27	43	57
28	42	58
29	41	59
30	41	59

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

	Clearer (%)	Cloudier (%)
1	91	9
2	92	8
3	92	8
4	92	8
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	93	7
11	93	7
12	93	7
13	93	7
14	94	6
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	95	5
25	95	5
26	95	5
27	94	6
28	94	6
29	94	6
30	94	6

	Rain chance (%)
1	46
2	46
3	46
4	46
5	46
6	46
7	46
8	46
9	46
10	45
11	45
12	44
13	44
14	43
15	42
16	41
17	39
18	38
19	37
20	36
21	34
22	33
23	32
24	31
25	30
26	29
27	29
28	29
29	29
30	29

	Muggy (%)	Oppressive (%)
1	50	50
2	50	50
3	51	49
4	51	49
5	51	49
6	51	49
7	51	49
8	51	49
9	50	50
10	50	50
11	50	50
12	49	51
13	49	51
14	48	52
15	48	52
16	48	52
17	47	53
18	47	53
19	47	53
20	46	54
21	46	54
22	46	54
23	45	55
24	45	55
25	45	55
26	44	56
27	43	57
28	42	58
29	41	59
30	41	59

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

	Clearer (%)	Cloudier (%)
1	91	9
2	92	8
3	92	8
4	92	8
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	93	7
11	93	7
12	93	7
13	93	7
14	94	6
15	94	6
16	94	6
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	94	6
23	94	6
24	95	5
25	95	5
26	95	5
27	94	6
28	94	6
29	94	6
30	94	6

	Rain chance (%)
1	46
2	46
3	46
4	46
5	46
6	46
7	46
8	46
9	46
10	45
11	45
12	44
13	44
14	43
15	42
16	41
17	39
18	38
19	37
20	36
21	34
22	33
23	32
24	31
25	30
26	29
27	29
28	29
29	29
30	29

	Muggy (%)	Oppressive (%)
1	50	50
2	50	50
3	51	49
4	51	49
5	51	49
6	51	49
7	51	49
8	51	49
9	50	50
10	50	50
11	50	50
12	49	51
13	49	51
14	48	52
15	48	52
16	48	52
17	47	53
18	47	53
19	47	53
20	46	54
21	46	54
22	46	54
23	45	55
24	45	55
25	45	55
26	44	56
27	43	57
28	42	58
29	41	59
30	41	59