De Aar weather in September

In September, De Aar sees average daytime highs of 23°C and overnight lows near 8°C, with 14 mm of rain across 2.1 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 67% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is De Aar's 4th-clearest and 5th-windiest month. For the whole year in context, see De Aar's year-round climate.

Daytime high: 23°; 8th warmest
Overnight low: 8°; 5th coldest
Rainfall: 14 mm; 2.1 wet days
Daylight: 11 h 48 min; 6:24 AM – 6:13 PM
Cloud cover: 28%; 4th clearest
Wind: 15 km/h; 5th windiest
Solar energy: 6.02 kWh/m²
Travel score: 8.6; out of 10

De Aar is town in the Northern Cape, South Africa.

Density: 378/km²; people per km²
Founded: 1903

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August De Aar 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 21°C in the first days to 24°C by the end.

A typical September day in De Aar reaches about 23°C in the afternoon and slips back to 8°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 29°C. Set against its neighbours, September runs about 4°C warmer than August and about 3°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)	21	21	22	22	22	22	22	22	22	22	23	23	23	23	23	23	23	23	23	23	23	24	24	24	24	24	24	24	24	24
Avg low (°C)	6	6	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	9	9	9	9	9	9	9	9	9	9

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

How September really feels in De Aar

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.

De Aar weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 17°	56	7.2	13.8	5.0
Feb	31° / 17°	47	7.7	13.1	5.2
Mar	28° / 15°	48	7	12.2	6.7
Apr	24° / 11°	31	5	11.3	8.1
May	20° / 7°	19	3.1	10.5	7.8
Jun	17° / 3°	14	2.5	10.1	6.7
Jul	17° / 2°	10	2.1	10.2	6.8
Aug	19° / 4°	11	2.3	10.9	7.8
Sep	23° / 8°	14	2.1	11.8	8.6
Oct	26° / 11°	24	3.7	12.8	8.2
Nov	28° / 13°	33	4.6	13.6	7.2
Dec	31° / 16°	37	5.2	13.9	5.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 20%.

	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 (%)	83	83	82	82	82	83	83	82	81	81	81	80	80	79	79	79	78	78	78	78	78	78	79	79	79	79	79	79	80	79
Cloudier (%)	17	17	18	18	18	17	17	18	19	19	19	20	20	21	21	21	22	22	22	22	22	22	21	21	21	21	21	21	20	21

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	82	18
6	83	17
7	83	17
8	82	18
9	81	19
10	81	19
11	81	19
12	80	20
13	80	20
14	79	21
15	79	21
16	79	21
17	78	22
18	78	22
19	78	22
20	78	22
21	78	22
22	78	22
23	79	21
24	79	21
25	79	21
26	79	21
27	79	21
28	79	21
29	80	20
30	79	21

Chance of precipitation in September

Any precipitation

De Aar gets around 14 mm of rain over 2.1 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 8% and peaks near 10% 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 (%)	7	7	7	7	6	7	7	7	7	8	8	8	9	9	9	9	10	10	10	9	9	9	9	8	8	8	8	8	8	8

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

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 100% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 15 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)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	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	15	light breeze
2	15	light breeze
3	15	light breeze
4	15	light breeze
5	15	light breeze
6	15	light breeze
7	15	light breeze
8	15	light breeze
9	15	light breeze
10	15	light breeze
11	15	light breeze
12	15	light breeze
13	15	light breeze
14	15	light breeze
15	15	light breeze
16	15	light breeze
17	15	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 18 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over September. Sunrise moves from 6:43 AM to 6:05 AM, and sunset from 6:04 PM to 6:21 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)	11.3	11.4	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.6	11.7	11.7	11.7	11.8	11.8	11.8	11.8	11.9	11.9	11.9	12.0	12.0	12.0	12.1	12.1	12.1	12.2	12.2	12.2	12.3
Sunrise (AM)	6:43	6:42	6:41	6:39	6:38	6:37	6:36	6:34	6:33	6:32	6:30	6:29	6:28	6:26	6:25	6:24	6:22	6:21	6:20	6:18	6:17	6:16	6:14	6:13	6:12	6:11	6:09	6:08	6:07	6:05
Sunset (PM)	6:04	6:05	6:05	6:06	6:06	6:07	6:08	6:08	6:09	6:09	6:10	6:10	6:11	6:12	6:12	6:13	6:13	6:14	6:15	6:15	6:16	6:16	6:17	6:17	6:18	6:19	6:19	6:20	6:21	6:21

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.3	6:43	6:04
2	11.4	6:42	6:05
3	11.4	6:41	6:05
4	11.4	6:39	6:06
5	11.5	6:38	6:06
6	11.5	6:37	6:07
7	11.5	6:36	6:08
8	11.6	6:34	6:08
9	11.6	6:33	6:09
10	11.6	6:32	6:09
11	11.7	6:30	6:10
12	11.7	6:29	6:10
13	11.7	6:28	6:11
14	11.8	6:26	6:12
15	11.8	6:25	6:12
16	11.8	6:24	6:13
17	11.8	6:22	6:13
18	11.9	6:21	6:14
19	11.9	6:20	6:15
20	11.9	6:18	6:15
21	12.0	6:17	6:16
22	12.0	6:16	6:16
23	12.0	6:14	6:17
24	12.1	6:13	6:17
25	12.1	6:12	6:18
26	12.1	6:11	6:19
27	12.2	6:09	6:19
28	12.2	6:08	6:20
29	12.2	6:07	6:21
30	12.3	6:05	6:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.02 kWh/m².

For context, solar energy here swings from a low near 3.35 kWh/m² to a high of 8.54 kWh/m² in December across the year — September's 6.02 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)	5.4	5.4	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	6.2	6.2	6.3	6.3	6.4	6.4	6.5	6.5	6.6	6.6	6.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.4	Bright
2	5.4	Bright
3	5.5	Bright
4	5.5	Bright
5	5.6	Bright
6	5.6	Bright
7	5.6	Bright
8	5.7	Bright
9	5.7	Bright
10	5.8	Bright
11	5.8	Bright
12	5.8	Bright
13	5.9	Bright
14	5.9	Bright
15	6.0	Bright
16	6.0	Bright
17	6.0	Intense
18	6.1	Intense
19	6.1	Intense
20	6.2	Intense
21	6.2	Intense
22	6.3	Intense
23	6.3	Intense
24	6.4	Intense
25	6.4	Intense
26	6.5	Intense
27	6.5	Intense
28	6.6	Intense
29	6.6	Intense
30	6.7	Intense

Planning a trip in September

Is September a good time to visit De Aar?

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

8.6

Sightseeing

1st-best month of the year

6.5

Beach & pool

8th-best month of the year

September is one of the better times to visit De Aar for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for De Aar in September

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

In September, De Aar sees daytime highs around 23°C and nights near 8°C. Pack sun protection. Worth having: light clothes and a warm layer.

sun protectionlight clothesa warm layer

UV index in De Aar in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in De Aar peaks around January 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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)	15	13	11	7	5	4	4	6	8	12	13	14
Level	Extreme	Extreme	Extreme	High	High	Moderate	Moderate	High	Very high	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	13	Extreme
Mar	11	Extreme
Apr	7	High
May	5	High
Jun	4	Moderate
Jul	4	Moderate
Aug	6	High
Sep	8	Very high
Oct	12	Extreme
Nov	13	Extreme
Dec	14	Extreme

Location & terrain

Where is De Aar?

De Aar sits at 30.6°S, 24.0°E, 1,247 m above sea level, in South Africa. The nearest listed city is Middelburg, 133 km away.

Topography around De Aar

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

Within 3 km, the terrain around De Aar has only modest variations in elevation — a maximum elevation change of 132 m around an average of 1,251 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 348 m; within 80 km, large variations in elevation — a maximum elevation change of 918 m.

The land around De Aar is covered by grassland (50%) and artificial surfaces (25%) within 3 km, grassland (83%) within 16 km, and grassland (89%) within 80 km.

3 km

132 m

grassland 50%

16 km

348 m

grassland 83%

80 km

918 m

grassland 89%

shrubsgrasslandartificial surfacesbare terrain

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

September weather nearby: Middelburg 133 km · Graaff Reinet 185 km · Burgersdorp 225 km · Kimberley 225 km · Cradock 227 km · Beaufort West 233 km · Aliwal North 258 km · Bloemfontein 272 km

South Africa travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / M / N; 230 V · 50 Hz
Prices: ≈ 41% of US; price level, 2025
GDP per capita: $6,598; 2025
Happiness: 5.0 / 10; World Happiness, 2025
Safe drinking water: 68%; of population, 2024
Homicide rate: 43.7; per 100k, 2022
Road deaths: 22.2; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very high; EF EPI 602
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 De Aar (-30.6497°, 24.0123°, elevation 1,247 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	21	6
2	21	6
3	22	7
4	22	7
5	22	7
6	22	7
7	22	7
8	22	7
9	22	7
10	22	8
11	23	8
12	23	8
13	23	8
14	23	8
15	23	8
16	23	8
17	23	8
18	23	8
19	23	8
20	23	8
21	23	9
22	24	9
23	24	9
24	24	9
25	24	9
26	24	9
27	24	9
28	24	9
29	24	9
30	24	9

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	82	18
6	83	17
7	83	17
8	82	18
9	81	19
10	81	19
11	81	19
12	80	20
13	80	20
14	79	21
15	79	21
16	79	21
17	78	22
18	78	22
19	78	22
20	78	22
21	78	22
22	78	22
23	79	21
24	79	21
25	79	21
26	79	21
27	79	21
28	79	21
29	80	20
30	79	21

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	82	18
6	83	17
7	83	17
8	82	18
9	81	19
10	81	19
11	81	19
12	80	20
13	80	20
14	79	21
15	79	21
16	79	21
17	78	22
18	78	22
19	78	22
20	78	22
21	78	22
22	78	22
23	79	21
24	79	21
25	79	21
26	79	21
27	79	21
28	79	21
29	80	20
30	79	21

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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

	Clearer (%)	Cloudier (%)
1	83	17
2	83	17
3	82	18
4	82	18
5	82	18
6	83	17
7	83	17
8	82	18
9	81	19
10	81	19
11	81	19
12	80	20
13	80	20
14	79	21
15	79	21
16	79	21
17	78	22
18	78	22
19	78	22
20	78	22
21	78	22
22	78	22
23	79	21
24	79	21
25	79	21
26	79	21
27	79	21
28	79	21
29	80	20
30	79	21

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100