Araruna weather in September

In September, Araruna sees average daytime highs of 29°C and overnight lows near 21°C, with 8 mm of rain across 2.6 wet days and about 12 hours of daylight. It is the 8th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Araruna's 1st-clearest and 1st-windiest month. For the whole year in context, see Araruna's year-round climate.

Daytime high: 29°; 8th warmest
Overnight low: 21°; 3rd coldest
Rainfall: 8 mm; 2.6 wet days
Daylight: 12 hours; 5:18 AM – 5:16 PM
Cloud cover: 46%; 1st clearest
Wind: 17 km/h; 1st windiest
Solar energy: 5.7 kWh/m²
Travel score: 6.3; out of 10

← August Araruna 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 29°C through the month.

A typical September day in Araruna reaches about 29°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°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	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	30	30	30	30	30	30	30	30	30	30	30	30	30
Avg low (°C)	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	21	21	21	21

	Avg high (°C)	Avg low (°C)
1	29	20
2	29	20
3	29	20
4	29	20
5	29	20
6	29	20
7	29	20
8	29	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	21
18	30	21
19	30	21
20	30	21
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	30	21
28	30	21
29	30	21
30	30	21

How September really feels in Araruna

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.

Araruna 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° / 22°	43	10.9	12.3	4.4
Feb	31° / 23°	53	11.8	12.2	4.2
Mar	31° / 23°	74	15.3	12	4.1
Apr	30° / 22°	77	14.6	11.9	4.4
May	29° / 22°	52	11.6	11.7	5.2
Jun	28° / 21°	42	9.2	11.6	6.3
Jul	28° / 20°	34	7.6	11.7	6.8
Aug	28° / 20°	15	4	11.8	6.8
Sep	29° / 21°	8	2.6	12	6.3
Oct	31° / 21°	7	2.2	12.1	5.7
Nov	31° / 22°	8	2.8	12.3	5.4
Dec	31° / 22°	17	6.1	12.4	4.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 42% of September, with mostly cloudy or overcast conditions the remaining 22%. 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 (%)	72	72	72	73	73	73	74	74	74	74	75	76	76	76	77	77	79	79	80	80	81	81	82	82	82	83	83	82	82	82
Cloudier (%)	28	28	28	27	27	27	26	26	26	26	25	24	24	24	23	23	21	21	20	20	19	19	18	18	18	17	17	18	18	18

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	74	26
8	74	26
9	74	26
10	74	26
11	75	25
12	76	24
13	76	24
14	76	24
15	77	23
16	77	23
17	79	21
18	79	21
19	80	20
20	80	20
21	81	19
22	81	19
23	82	18
24	82	18
25	82	18
26	83	17
27	83	17
28	82	18
29	82	18
30	82	18

Chance of precipitation in September

Any precipitation

Araruna gets around 8 mm of rain over 2.6 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 9% and peaks near 11% on the wettest days.

	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 (%)	11	11	11	11	11	11	11	10	10	10	10	10	10	9	9	9	8	8	8	7	7	7	7	6	6	6	6	6	6	6

	Rain chance (%)
1	11
2	11
3	11
4	11
5	11
6	11
7	11
8	10
9	10
10	10
11	10
12	10
13	10
14	9
15	9
16	9
17	8
18	8
19	8
20	7
21	7
22	7
23	7
24	6
25	6
26	6
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 68% of days. Sticky, muggy-or-worse air turns up on roughly 68% 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 (%)	33	33	33	34	34	34	35	35	35	35	35	35	35	34	34	33	33	32	32	31	31	30	30	29	29	28	27	27	26	25
Muggy (%)	67	67	67	66	66	66	65	65	65	65	65	65	65	66	66	67	67	68	68	69	69	70	70	71	71	72	73	73	74	75

	Humid (%)	Muggy (%)
1	33	67
2	33	67
3	33	67
4	34	66
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	35	65
11	35	65
12	35	65
13	35	65
14	34	66
15	34	66
16	33	67
17	33	67
18	32	68
19	32	68
20	31	69
21	31	69
22	30	70
23	30	70
24	29	71
25	29	71
26	28	72
27	27	73
28	27	73
29	26	74
30	25	75

Wind in September

Winds average 17 km/h in September, the windiest month of the year.

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 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 12 minutes over September. Sunrise moves from 5:26 AM to 5:11 AM, and sunset from 5:19 PM to 5:14 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	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	12.1
Sunrise (AM)	5:26	5:26	5:25	5:25	5:24	5:24	5:23	5:23	5:22	5:22	5:21	5:21	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
Sunset (PM)	5:19	5:19	5:19	5:18	5:18	5:18	5:18	5:18	5:18	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	5:15	5:15	5:14	5:14	5:14	5:14	5:14

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

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.7 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 6.28 kWh/m² in November across the year — September's 5.7 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)	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7	5.8	5.8	5.8	5.9	5.9	6.0	6.0	6.0	6.1	6.1	6.1	6.1	6.2
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	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.3	Bright
2	5.3	Bright
3	5.3	Bright
4	5.3	Bright
5	5.4	Bright
6	5.4	Bright
7	5.4	Bright
8	5.4	Bright
9	5.5	Bright
10	5.5	Bright
11	5.5	Bright
12	5.5	Bright
13	5.6	Bright
14	5.6	Bright
15	5.6	Bright
16	5.7	Bright
17	5.7	Bright
18	5.8	Bright
19	5.8	Bright
20	5.8	Bright
21	5.9	Bright
22	5.9	Bright
23	6.0	Bright
24	6.0	Bright
25	6.0	Intense
26	6.1	Intense
27	6.1	Intense
28	6.1	Intense
29	6.1	Intense
30	6.2	Intense

Planning a trip in September

Is September a good time to visit Araruna?

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

6.3

Sightseeing

3rd-best month of the year

8.3

Beach & pool

1st-best month of the year

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

What to pack for Araruna in September

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

In September, Araruna sees daytime highs around 29°C and nights near 21°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Araruna 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 Araruna peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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	15	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	15	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 Araruna?

Araruna sits at 6.6°S, 35.7°W, 496 m above sea level, in Brazil. The nearest listed city is Cacimba de Dentro, 11 km away.

Topography around Araruna

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

Within 3 km, the terrain around Araruna has only modest variations in elevation — a maximum elevation change of 209 m around an average of 509 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 476 m; within 80 km, large variations in elevation — a maximum elevation change of 744 m.

The land around Araruna is covered by grassland (69%) within 3 km, grassland (55%) and shrubs (37%) within 16 km, and grassland (51%) and shrubs (37%) within 80 km.

3 km

209 m

grassland 69%

16 km

476 m

grassland 55%

80 km

744 m

grassland 51%

treesshrubsgrasslandcroplandartificial surfaces

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

September weather nearby: Cacimba de Dentro 11 km · Solânea 23 km · Bananeiras 24 km · Belém 27 km · Nova Cruz 35 km · Santo Antônio 40 km · Guarabira 43 km · Areia 45 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 Araruna (-6.5583°, -35.7417°, elevation 496 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	29	20
3	29	20
4	29	20
5	29	20
6	29	20
7	29	20
8	29	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	21
18	30	21
19	30	21
20	30	21
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	30	21
28	30	21
29	30	21
30	30	21

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	74	26
8	74	26
9	74	26
10	74	26
11	75	25
12	76	24
13	76	24
14	76	24
15	77	23
16	77	23
17	79	21
18	79	21
19	80	20
20	80	20
21	81	19
22	81	19
23	82	18
24	82	18
25	82	18
26	83	17
27	83	17
28	82	18
29	82	18
30	82	18

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

	Humid (%)	Muggy (%)
1	33	67
2	33	67
3	33	67
4	34	66
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	35	65
11	35	65
12	35	65
13	35	65
14	34	66
15	34	66
16	33	67
17	33	67
18	32	68
19	32	68
20	31	69
21	31	69
22	30	70
23	30	70
24	29	71
25	29	71
26	28	72
27	27	73
28	27	73
29	26	74
30	25	75

	Avg high (°C)	Avg low (°C)
1	29	20
2	29	20
3	29	20
4	29	20
5	29	20
6	29	20
7	29	20
8	29	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	21
18	30	21
19	30	21
20	30	21
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	30	21
28	30	21
29	30	21
30	30	21

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	74	26
8	74	26
9	74	26
10	74	26
11	75	25
12	76	24
13	76	24
14	76	24
15	77	23
16	77	23
17	79	21
18	79	21
19	80	20
20	80	20
21	81	19
22	81	19
23	82	18
24	82	18
25	82	18
26	83	17
27	83	17
28	82	18
29	82	18
30	82	18

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

	Humid (%)	Muggy (%)
1	33	67
2	33	67
3	33	67
4	34	66
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	35	65
11	35	65
12	35	65
13	35	65
14	34	66
15	34	66
16	33	67
17	33	67
18	32	68
19	32	68
20	31	69
21	31	69
22	30	70
23	30	70
24	29	71
25	29	71
26	28	72
27	27	73
28	27	73
29	26	74
30	25	75

	Avg high (°C)	Avg low (°C)
1	29	20
2	29	20
3	29	20
4	29	20
5	29	20
6	29	20
7	29	20
8	29	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	21
18	30	21
19	30	21
20	30	21
21	30	21
22	30	21
23	30	21
24	30	21
25	30	21
26	30	21
27	30	21
28	30	21
29	30	21
30	30	21

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	74	26
8	74	26
9	74	26
10	74	26
11	75	25
12	76	24
13	76	24
14	76	24
15	77	23
16	77	23
17	79	21
18	79	21
19	80	20
20	80	20
21	81	19
22	81	19
23	82	18
24	82	18
25	82	18
26	83	17
27	83	17
28	82	18
29	82	18
30	82	18

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

	Humid (%)	Muggy (%)
1	33	67
2	33	67
3	33	67
4	34	66
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	35	65
11	35	65
12	35	65
13	35	65
14	34	66
15	34	66
16	33	67
17	33	67
18	32	68
19	32	68
20	31	69
21	31	69
22	30	70
23	30	70
24	29	71
25	29	71
26	28	72
27	27	73
28	27	73
29	26	74
30	25	75