Piranhas weather in September

In September, Piranhas sees average daytime highs of 31°C and overnight lows near 21°C, with 12 mm of rain across 4.3 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 30°C in the first days to 32°C by the end. The sky is clear or mostly clear about 32% 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 Piranhas's 2nd-clearest and 1st-windiest month. For the whole year in context, see Piranhas's year-round climate.

Daytime high: 31°; 8th warmest
Overnight low: 21°; 3rd coldest
Rainfall: 12 mm; 4.3 wet days
Daylight: 11 h 54 min; 5:27 AM – 5:24 PM
Cloud cover: 49%; 2nd clearest
Wind: 16 km/h; 1st windiest
Solar energy: 5.42 kWh/m²
Travel score: 5.3; out of 10

← August Piranhas 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 30°C in the first days to 32°C by the end.

A typical September day in Piranhas reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°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)	29	30	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31	31	32	32	32	32	32	32	32	32
Avg low (°C)	20	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21

	Avg high (°C)	Avg low (°C)
1	29	20
2	30	20
3	30	20
4	30	20
5	30	20
6	30	20
7	30	20
8	30	20
9	30	20
10	30	20
11	30	21
12	30	21
13	30	21
14	30	21
15	31	21
16	31	21
17	31	21
18	31	21
19	31	21
20	31	21
21	31	21
22	31	21
23	32	21
24	32	21
25	32	21
26	32	21
27	32	21
28	32	21
29	32	21
30	32	21

How September really feels in Piranhas

Once humidity and wind are folded in, September averages 13 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.

Piranhas 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	34° / 23°	34	5.3	12.5	3.2
Feb	34° / 24°	36	6.4	12.3	3.3
Mar	34° / 24°	48	7.7	12.1	3.4
Apr	32° / 23°	38	8	11.8	4.0
May	30° / 22°	39	9.9	11.6	4.9
Jun	28° / 21°	33	10.8	11.4	5.8
Jul	28° / 20°	30	11.1	11.5	6.2
Aug	28° / 20°	21	7.6	11.7	6.1
Sep	31° / 21°	12	4.3	11.9	5.3
Oct	33° / 22°	10	2.1	12.2	4.3
Nov	34° / 23°	15	2.2	12.4	3.5
Dec	34° / 23°	19	3	12.6	3.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 31% of September, with mostly cloudy or overcast conditions the remaining 37%. 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 (%)	53	53	53	52	53	54	54	55	56	57	58	60	61	62	64	65	66	67	69	70	70	71	72	72	73	72	72	72	72	71
Cloudier (%)	47	47	47	48	47	46	46	45	44	43	42	40	39	38	36	35	34	33	31	30	30	29	28	28	27	28	28	28	28	29

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	52	48
5	53	47
6	54	46
7	54	46
8	55	45
9	56	44
10	57	43
11	58	42
12	60	40
13	61	39
14	62	38
15	64	36
16	65	35
17	66	34
18	67	33
19	69	31
20	70	30
21	70	30
22	71	29
23	72	28
24	72	28
25	73	27
26	72	28
27	72	28
28	72	28
29	72	28
30	71	29

Chance of precipitation in September

Any precipitation

Piranhas gets around 12 mm of rain over 4.3 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 14% 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 (%)	19	19	19	19	19	20	20	20	20	20	19	19	19	18	17	16	16	14	13	12	11	10	9	8	7	7	6	6	6	6

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

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 64% of days. Sticky, muggy-or-worse air turns up on roughly 64% 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 (%)	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0
Humid (%)	33	34	34	34	34	34	34	35	35	35	35	34	35	35	35	35	35	36	36	36	36	37	37	37	38	38	39	39	39	40
Muggy (%)	67	66	66	66	66	66	66	65	65	65	65	65	64	64	64	64	64	63	63	63	63	63	63	63	62	62	61	61	61	60

	Comfortable (%)	Humid (%)	Muggy (%)
1	0	33	67
2	0	34	66
3	0	34	66
4	0	34	66
5	0	34	66
6	0	34	66
7	0	34	66
8	0	35	65
9	0	35	65
10	0	35	65
11	0	35	65
12	1	34	65
13	1	35	64
14	1	35	64
15	1	35	64
16	1	35	64
17	1	35	64
18	1	36	63
19	1	36	63
20	1	36	63
21	1	36	63
22	0	37	63
23	0	37	63
24	0	37	63
25	0	38	62
26	0	38	62
27	0	39	61
28	0	39	61
29	0	39	61
30	0	40	60

Wind in September

Winds average 16 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 16 km/h on the calmest days to 16 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)	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16
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	16	light breeze
2	16	light breeze
3	16	light breeze
4	16	light breeze
5	16	light breeze
6	16	light breeze
7	16	light breeze
8	16	light breeze
9	16	light breeze
10	16	light breeze
11	16	light breeze
12	16	light breeze
13	16	light breeze
14	16	light breeze
15	16	light breeze
16	16	light breeze
17	16	light breeze
18	16	light breeze
19	16	light breeze
20	16	light breeze
21	16	light breeze
22	16	light breeze
23	16	light breeze
24	16	light breeze
25	16	light breeze
26	16	light breeze
27	16	light breeze
28	16	light breeze
29	16	light breeze
30	16	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 5:36 AM to 5:18 AM, and sunset from 5:25 PM to 5:23 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	11.9	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)	5:36	5:36	5:35	5:35	5:34	5:33	5:33	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	5:22	5:22	5:21	5:21	5:20	5:19	5:19	5:18
Sunset (PM)	5:25	5:25	5:25	5:25	5:25	5:25	5:25	5:25	5:24	5:24	5:24	5:24	5:24	5:24	5:24	5:24	5:24	5:24	5:23	5:23	5:23	5:23	5:23	5:23	5:23	5:23	5:23	5:23	5:23	5:23

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

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.42 kWh/m².

For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 6.64 kWh/m² in November across the year — September's 5.42 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)	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.2	5.3	5.3	5.3	5.4	5.5	5.5	5.6	5.6	5.7	5.7	5.8	5.8	5.8	5.9	5.9	5.9	6.0	6.0
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	4.9	Bright
2	4.9	Bright
3	4.9	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	5.0	Bright
8	5.1	Bright
9	5.1	Bright
10	5.2	Bright
11	5.2	Bright
12	5.2	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.4	Bright
17	5.5	Bright
18	5.5	Bright
19	5.6	Bright
20	5.6	Bright
21	5.7	Bright
22	5.7	Bright
23	5.8	Bright
24	5.8	Bright
25	5.8	Bright
26	5.9	Bright
27	5.9	Bright
28	5.9	Bright
29	6.0	Bright
30	6.0	Bright

Planning a trip in September

Is September a good time to visit Piranhas?

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

5.3

Sightseeing

4th-best month of the year

7.6

Beach & pool

1st-best month of the year

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

What to pack for Piranhas in September

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

In September, Piranhas sees daytime highs around 31°C and nights near 21°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

UV index in Piranhas 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 Piranhas peaks around February 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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	10	9	9	10	11	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	10	Extreme
Jun	9	Very high
Jul	9	Very high
Aug	10	Very high
Sep	11	Extreme
Oct	13	Extreme
Nov	12	Extreme
Dec	12	Extreme

Location & terrain

Where is Piranhas?

Piranhas sits at 9.6°S, 37.8°W, 73 m above sea level, in Brazil. The nearest listed city is Canindé de São Francisco, 5.0 km away.

Topography around Piranhas

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

Within 3 km, the terrain around Piranhas has only modest variations in elevation — a maximum elevation change of 215 m around an average of 133 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 520 m; within 80 km, large variations in elevation — a maximum elevation change of 835 m.

The land around Piranhas is covered by shrubs (54%) and grassland (27%) within 3 km, shrubs (48%) and grassland (34%) within 16 km, and grassland (53%) and shrubs (31%) within 80 km.

3 km

215 m

shrubs 54%

16 km

520 m

shrubs 48%

80 km

835 m

grassland 53%

treesshrubsgrasslandcroplandartificial surfaceswaterwetland

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

September weather nearby: Canindé de São Francisco 5.0 km · Poço Redondo 22 km · Delmiro Gouveia 37 km · Pão de Açúcar 38 km · São José da Tapera 42 km · Inhapi 45 km · Água Branca 45 km · Olho d'Água das Flores 52 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 Piranhas (-9.6236°, -37.7567°, elevation 73 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	29	20
2	30	20
3	30	20
4	30	20
5	30	20
6	30	20
7	30	20
8	30	20
9	30	20
10	30	20
11	30	21
12	30	21
13	30	21
14	30	21
15	31	21
16	31	21
17	31	21
18	31	21
19	31	21
20	31	21
21	31	21
22	31	21
23	32	21
24	32	21
25	32	21
26	32	21
27	32	21
28	32	21
29	32	21
30	32	21

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	52	48
5	53	47
6	54	46
7	54	46
8	55	45
9	56	44
10	57	43
11	58	42
12	60	40
13	61	39
14	62	38
15	64	36
16	65	35
17	66	34
18	67	33
19	69	31
20	70	30
21	70	30
22	71	29
23	72	28
24	72	28
25	73	27
26	72	28
27	72	28
28	72	28
29	72	28
30	71	29

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

	Comfortable (%)	Humid (%)	Muggy (%)
1	0	33	67
2	0	34	66
3	0	34	66
4	0	34	66
5	0	34	66
6	0	34	66
7	0	34	66
8	0	35	65
9	0	35	65
10	0	35	65
11	0	35	65
12	1	34	65
13	1	35	64
14	1	35	64
15	1	35	64
16	1	35	64
17	1	35	64
18	1	36	63
19	1	36	63
20	1	36	63
21	1	36	63
22	0	37	63
23	0	37	63
24	0	37	63
25	0	38	62
26	0	38	62
27	0	39	61
28	0	39	61
29	0	39	61
30	0	40	60

	Avg high (°C)	Avg low (°C)
1	29	20
2	30	20
3	30	20
4	30	20
5	30	20
6	30	20
7	30	20
8	30	20
9	30	20
10	30	20
11	30	21
12	30	21
13	30	21
14	30	21
15	31	21
16	31	21
17	31	21
18	31	21
19	31	21
20	31	21
21	31	21
22	31	21
23	32	21
24	32	21
25	32	21
26	32	21
27	32	21
28	32	21
29	32	21
30	32	21

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	52	48
5	53	47
6	54	46
7	54	46
8	55	45
9	56	44
10	57	43
11	58	42
12	60	40
13	61	39
14	62	38
15	64	36
16	65	35
17	66	34
18	67	33
19	69	31
20	70	30
21	70	30
22	71	29
23	72	28
24	72	28
25	73	27
26	72	28
27	72	28
28	72	28
29	72	28
30	71	29

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

	Comfortable (%)	Humid (%)	Muggy (%)
1	0	33	67
2	0	34	66
3	0	34	66
4	0	34	66
5	0	34	66
6	0	34	66
7	0	34	66
8	0	35	65
9	0	35	65
10	0	35	65
11	0	35	65
12	1	34	65
13	1	35	64
14	1	35	64
15	1	35	64
16	1	35	64
17	1	35	64
18	1	36	63
19	1	36	63
20	1	36	63
21	1	36	63
22	0	37	63
23	0	37	63
24	0	37	63
25	0	38	62
26	0	38	62
27	0	39	61
28	0	39	61
29	0	39	61
30	0	40	60

	Avg high (°C)	Avg low (°C)
1	29	20
2	30	20
3	30	20
4	30	20
5	30	20
6	30	20
7	30	20
8	30	20
9	30	20
10	30	20
11	30	21
12	30	21
13	30	21
14	30	21
15	31	21
16	31	21
17	31	21
18	31	21
19	31	21
20	31	21
21	31	21
22	31	21
23	32	21
24	32	21
25	32	21
26	32	21
27	32	21
28	32	21
29	32	21
30	32	21

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	52	48
5	53	47
6	54	46
7	54	46
8	55	45
9	56	44
10	57	43
11	58	42
12	60	40
13	61	39
14	62	38
15	64	36
16	65	35
17	66	34
18	67	33
19	69	31
20	70	30
21	70	30
22	71	29
23	72	28
24	72	28
25	73	27
26	72	28
27	72	28
28	72	28
29	72	28
30	71	29

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

	Comfortable (%)	Humid (%)	Muggy (%)
1	0	33	67
2	0	34	66
3	0	34	66
4	0	34	66
5	0	34	66
6	0	34	66
7	0	34	66
8	0	35	65
9	0	35	65
10	0	35	65
11	0	35	65
12	1	34	65
13	1	35	64
14	1	35	64
15	1	35	64
16	1	35	64
17	1	35	64
18	1	36	63
19	1	36	63
20	1	36	63
21	1	36	63
22	0	37	63
23	0	37	63
24	0	37	63
25	0	38	62
26	0	38	62
27	0	39	61
28	0	39	61
29	0	39	61
30	0	40	60