Casa Nova weather in September

In September, Casa Nova sees average daytime highs of 32°C and overnight lows near 21°C, with 1 mm of rain across 0.1 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 33°C by the end. The sky is clear or mostly clear about 62% of the time in September, and the air most often feels humid.

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

Daytime high: 32°; 4th warmest
Overnight low: 21°; 4th coldest
Rainfall: 1 mm; 0.1 wet days
Daylight: 12 hours; 5:40 AM – 5:37 PM
Cloud cover: 34%; 1st clearest
Wind: 21 km/h; 2nd windiest
Solar energy: 6.47 kWh/m²
Travel score: 5.2; out of 10

← August Casa Nova 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 31°C in the first days to 33°C by the end.

A typical September day in Casa Nova reaches about 32°C in the afternoon and slips back to 21°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, September runs about 2°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)	31	31	31	31	31	31	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	33	33	33	33	33	33	33	33	33
Avg low (°C)	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	22	22	22	22	22	22

	Avg high (°C)	Avg low (°C)
1	31	20
2	31	20
3	31	20
4	31	20
5	31	21
6	31	21
7	32	21
8	32	21
9	32	21
10	32	21
11	32	21
12	32	21
13	32	21
14	32	21
15	32	21
16	32	21
17	32	21
18	32	21
19	32	21
20	32	21
21	32	21
22	33	21
23	33	21
24	33	21
25	33	22
26	33	22
27	33	22
28	33	22
29	33	22
30	33	22

How September really feels in Casa Nova

Once humidity and wind are folded in, September averages 16 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.

Casa Nova weather by month

How September compares with the rest of the year at a glance. September is the 4th-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	32° / 24°	98	10.5	12.5	3.9
Feb	32° / 23°	80	11	12.3	3.8
Mar	32° / 23°	96	11.9	12.1	3.9
Apr	32° / 23°	43	7.4	11.8	4.4
May	31° / 22°	10	2.3	11.6	5.3
Jun	30° / 21°	2	0.4	11.5	6.3
Jul	29° / 20°	2	0.2	11.5	6.6
Aug	30° / 20°	1	0.1	11.7	6.2
Sep	32° / 21°	1	0.1	11.9	5.2
Oct	33° / 23°	10	1.5	12.2	4.2
Nov	33° / 24°	34	4.5	12.4	3.9
Dec	33° / 24°	56	6.9	12.5	3.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 23%. 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	71	71	70	70	70	71	71	72	73	73	74	75	75	76	78	78	79	81	82	82	83	83	83	83	82	83	83	81
Cloudier (%)	28	28	29	29	30	30	30	29	29	28	27	27	26	25	25	24	22	22	21	19	18	18	17	17	17	17	18	17	17	19

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	70	30
7	70	30
8	71	29
9	71	29
10	72	28
11	73	27
12	73	27
13	74	26
14	75	25
15	75	25
16	76	24
17	78	22
18	78	22
19	79	21
20	81	19
21	82	18
22	82	18
23	83	17
24	83	17
25	83	17
26	83	17
27	82	18
28	83	17
29	83	17
30	81	19

Chance of precipitation in September

Any precipitation

Casa Nova gets around 1 mm of rain over 0.1 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 1% and peaks near 1% 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 (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 73% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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
Dry (%)	1	1	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
Comfortable (%)	26	26	25	25	25	25	25	25	25	24	24	24	23	23	23	22	22	21	21	20	20	19	19	19	18	18	18	18	18	18
Humid (%)	70	70	71	71	71	71	71	70	70	71	71	72	73	73	73	74	74	75	75	75	75	76	76	75	76	75	75	74	74	73
Muggy (%)	3	3	3	3	3	3	3	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	6	6	7	7	8	8	9

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	1	26	70	3
2	1	26	70	3
3	1	25	71	3
4	1	25	71	3
5	1	25	71	3
6	1	25	71	3
7	1	25	71	3
8	1	25	70	4
9	1	25	70	4
10	1	24	71	4
11	1	24	71	4
12	0	24	72	4
13	0	23	73	4
14	0	23	73	4
15	0	23	73	4
16	0	22	74	4
17	0	22	74	4
18	0	21	75	4
19	0	21	75	4
20	0	20	75	5
21	0	20	75	5
22	0	19	76	5
23	0	19	76	5
24	0	19	75	6
25	0	18	76	6
26	0	18	75	7
27	0	18	75	7
28	0	18	74	8
29	0	18	74	8
30	0	18	73	9

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 20 km/h on the calmest days to 21 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)	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	20	20	20	20	20
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	21	breezy
2	21	breezy
3	21	breezy
4	21	breezy
5	21	breezy
6	21	breezy
7	21	breezy
8	21	breezy
9	21	breezy
10	21	breezy
11	21	breezy
12	21	breezy
13	21	breezy
14	21	breezy
15	21	breezy
16	21	breezy
17	21	breezy
18	20	breezy
19	20	breezy
20	20	breezy
21	20	breezy
22	20	breezy
23	20	light breeze
24	20	light breeze
25	20	light breeze
26	20	light breeze
27	20	light breeze
28	20	light breeze
29	20	light breeze
30	20	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 5:49 AM to 5:31 AM, and sunset from 5:38 PM to 5:35 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	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	12.1	12.1
Sunrise (AM)	5:49	5:48	5:48	5:47	5:47	5:46	5:45	5:45	5:44	5:43	5:43	5:42	5:42	5:41	5:40	5:40	5:39	5:38	5:38	5:37	5:37	5:36	5:35	5:35	5:34	5:33	5:33	5:32	5:32	5:31
Sunset (PM)	5:38	5:38	5:38	5:38	5:38	5:38	5:38	5:38	5:38	5:37	5:37	5:37	5:37	5:37	5:37	5:37	5:37	5:37	5:36	5:36	5:36	5:36	5:36	5:36	5:36	5:36	5:36	5:36	5:35	5:35

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.8	5:49	5:38
2	11.8	5:48	5:38
3	11.8	5:48	5:38
4	11.8	5:47	5:38
5	11.9	5:47	5:38
6	11.9	5:46	5:38
7	11.9	5:45	5:38
8	11.9	5:45	5:38
9	11.9	5:44	5:38
10	11.9	5:43	5:37
11	11.9	5:43	5:37
12	11.9	5:42	5:37
13	11.9	5:42	5:37
14	11.9	5:41	5:37
15	11.9	5:40	5:37
16	12.0	5:40	5:37
17	12.0	5:39	5:37
18	12.0	5:38	5:37
19	12.0	5:38	5:36
20	12.0	5:37	5:36
21	12.0	5:37	5:36
22	12.0	5:36	5:36
23	12.0	5:35	5:36
24	12.0	5:35	5:36
25	12.0	5:34	5:36
26	12.0	5:33	5:36
27	12.0	5:33	5:36
28	12.1	5:32	5:36
29	12.1	5:32	5:35
30	12.1	5:31	5:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.47 kWh/m².

For context, solar energy here swings from a low near 4.32 kWh/m² to a high of 6.95 kWh/m² in October across the year — September's 6.47 kWh/m² sits near the top of that range.

	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)	6.1	6.1	6.1	6.1	6.2	6.2	6.2	6.2	6.2	6.3	6.3	6.3	6.4	6.4	6.4	6.5	6.5	6.5	6.6	6.6	6.7	6.7	6.7	6.8	6.8	6.8	6.8	6.9	6.9	6.9
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	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	6.1	Intense
2	6.1	Intense
3	6.1	Intense
4	6.1	Intense
5	6.2	Intense
6	6.2	Intense
7	6.2	Intense
8	6.2	Intense
9	6.2	Intense
10	6.3	Intense
11	6.3	Intense
12	6.3	Intense
13	6.4	Intense
14	6.4	Intense
15	6.4	Intense
16	6.5	Intense
17	6.5	Intense
18	6.5	Intense
19	6.6	Intense
20	6.6	Intense
21	6.7	Intense
22	6.7	Intense
23	6.7	Intense
24	6.8	Intense
25	6.8	Intense
26	6.8	Intense
27	6.8	Intense
28	6.9	Intense
29	6.9	Intense
30	6.9	Intense

Planning a trip in September

Is September a good time to visit Casa Nova?

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

5.2

Sightseeing

5th-best month of the year

8.3

Beach & pool

4th-best month of the year

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

What to pack for Casa Nova in September

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

In September, Casa Nova sees daytime highs around 32°C and nights near 21°C. Pack light clothes and sun protection. Worth having: a windbreaker.

light clothessun protectiona windbreaker

UV index in Casa Nova 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 Casa Nova 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	10	10	9	10	12	13	13	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	10	Very high
Jul	9	Very high
Aug	10	Very high
Sep	12	Extreme
Oct	13	Extreme
Nov	13	Extreme
Dec	12	Extreme

Location & terrain

Where is Casa Nova?

Casa Nova sits at 9.2°S, 41.0°W, 311 m above sea level, in Brazil. The nearest listed city is Sobradinho, 38 km away.

Topography around Casa Nova

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

Within 3 km, the terrain around Casa Nova has only modest variations in elevation — a maximum elevation change of 24 m around an average of 397 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 208 m; within 80 km, large variations in elevation — a maximum elevation change of 661 m.

The land around Casa Nova is covered by shrubs (32%), grassland (25%) and water (25%) within 3 km, shrubs (65%) and grassland (20%) within 16 km, and shrubs (71%) within 80 km.

3 km

24 m

shrubs 32%

16 km

208 m

shrubs 65%

80 km

661 m

shrubs 71%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland

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

September weather nearby: Sobradinho 38 km · Petrolina 58 km · Juazeiro 59 km · Afrânio 73 km · Lagoa Grande 80 km · Dormentes 84 km · Paulistana 116 km · Sento Sé 118 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 Casa Nova (-9.1742°, -40.9751°, elevation 311 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	31	20
2	31	20
3	31	20
4	31	20
5	31	21
6	31	21
7	32	21
8	32	21
9	32	21
10	32	21
11	32	21
12	32	21
13	32	21
14	32	21
15	32	21
16	32	21
17	32	21
18	32	21
19	32	21
20	32	21
21	32	21
22	33	21
23	33	21
24	33	21
25	33	22
26	33	22
27	33	22
28	33	22
29	33	22
30	33	22

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	70	30
7	70	30
8	71	29
9	71	29
10	72	28
11	73	27
12	73	27
13	74	26
14	75	25
15	75	25
16	76	24
17	78	22
18	78	22
19	79	21
20	81	19
21	82	18
22	82	18
23	83	17
24	83	17
25	83	17
26	83	17
27	82	18
28	83	17
29	83	17
30	81	19

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	1	26	70	3
2	1	26	70	3
3	1	25	71	3
4	1	25	71	3
5	1	25	71	3
6	1	25	71	3
7	1	25	71	3
8	1	25	70	4
9	1	25	70	4
10	1	24	71	4
11	1	24	71	4
12	0	24	72	4
13	0	23	73	4
14	0	23	73	4
15	0	23	73	4
16	0	22	74	4
17	0	22	74	4
18	0	21	75	4
19	0	21	75	4
20	0	20	75	5
21	0	20	75	5
22	0	19	76	5
23	0	19	76	5
24	0	19	75	6
25	0	18	76	6
26	0	18	75	7
27	0	18	75	7
28	0	18	74	8
29	0	18	74	8
30	0	18	73	9

	Avg high (°C)	Avg low (°C)
1	31	20
2	31	20
3	31	20
4	31	20
5	31	21
6	31	21
7	32	21
8	32	21
9	32	21
10	32	21
11	32	21
12	32	21
13	32	21
14	32	21
15	32	21
16	32	21
17	32	21
18	32	21
19	32	21
20	32	21
21	32	21
22	33	21
23	33	21
24	33	21
25	33	22
26	33	22
27	33	22
28	33	22
29	33	22
30	33	22

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	70	30
7	70	30
8	71	29
9	71	29
10	72	28
11	73	27
12	73	27
13	74	26
14	75	25
15	75	25
16	76	24
17	78	22
18	78	22
19	79	21
20	81	19
21	82	18
22	82	18
23	83	17
24	83	17
25	83	17
26	83	17
27	82	18
28	83	17
29	83	17
30	81	19

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	1	26	70	3
2	1	26	70	3
3	1	25	71	3
4	1	25	71	3
5	1	25	71	3
6	1	25	71	3
7	1	25	71	3
8	1	25	70	4
9	1	25	70	4
10	1	24	71	4
11	1	24	71	4
12	0	24	72	4
13	0	23	73	4
14	0	23	73	4
15	0	23	73	4
16	0	22	74	4
17	0	22	74	4
18	0	21	75	4
19	0	21	75	4
20	0	20	75	5
21	0	20	75	5
22	0	19	76	5
23	0	19	76	5
24	0	19	75	6
25	0	18	76	6
26	0	18	75	7
27	0	18	75	7
28	0	18	74	8
29	0	18	74	8
30	0	18	73	9

	Avg high (°C)	Avg low (°C)
1	31	20
2	31	20
3	31	20
4	31	20
5	31	21
6	31	21
7	32	21
8	32	21
9	32	21
10	32	21
11	32	21
12	32	21
13	32	21
14	32	21
15	32	21
16	32	21
17	32	21
18	32	21
19	32	21
20	32	21
21	32	21
22	33	21
23	33	21
24	33	21
25	33	22
26	33	22
27	33	22
28	33	22
29	33	22
30	33	22

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	70	30
7	70	30
8	71	29
9	71	29
10	72	28
11	73	27
12	73	27
13	74	26
14	75	25
15	75	25
16	76	24
17	78	22
18	78	22
19	79	21
20	81	19
21	82	18
22	82	18
23	83	17
24	83	17
25	83	17
26	83	17
27	82	18
28	83	17
29	83	17
30	81	19

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	1	26	70	3
2	1	26	70	3
3	1	25	71	3
4	1	25	71	3
5	1	25	71	3
6	1	25	71	3
7	1	25	71	3
8	1	25	70	4
9	1	25	70	4
10	1	24	71	4
11	1	24	71	4
12	0	24	72	4
13	0	23	73	4
14	0	23	73	4
15	0	23	73	4
16	0	22	74	4
17	0	22	74	4
18	0	21	75	4
19	0	21	75	4
20	0	20	75	5
21	0	20	75	5
22	0	19	76	5
23	0	19	76	5
24	0	19	75	6
25	0	18	76	6
26	0	18	75	7
27	0	18	75	7
28	0	18	74	8
29	0	18	74	8
30	0	18	73	9