White River weather in September

In September, White River sees average daytime highs of 25°C and overnight lows near 12°C, with 45 mm of rain across 7.3 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 62% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is White River's 5th-clearest and 1st-windiest month. For the whole year in context, see White River's year-round climate.

Daytime high: 25°; 7th warmest
Overnight low: 12°; 5th coldest
Rainfall: 45 mm; 7.3 wet days
Daylight: 11 h 54 min; 5:55 AM – 5:46 PM
Cloud cover: 36%; 5th clearest
Wind: 7 km/h; 1st windiest
Solar energy: 5.24 kWh/m²
Travel score: 7.7; out of 10

White River is place in Mpumalanga, South Africa.

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

← August White River 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 25°C through the month.

A typical September day in White River reaches about 25°C in the afternoon and slips back to 12°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 32°C. Set against its neighbours, September runs about 2°C warmer than 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)	24	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25
Avg low (°C)	11	11	11	11	12	12	12	12	12	12	12	12	12	12	12	12	13	13	13	13	13	13	13	13	13	13	13	13	13	14

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

White River weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	27° / 18°	186	18.5	13.4	5.2
Feb	27° / 18°	160	15.8	12.9	5.5
Mar	26° / 17°	126	15.2	12.2	6.0
Apr	25° / 14°	69	9.9	11.4	7.2
May	23° / 11°	24	4.8	10.8	8.5
Jun	22° / 8°	13	3	10.5	8.5
Jul	21° / 8°	18	3.8	10.6	8.3
Aug	23° / 10°	24	5.1	11.1	8.3
Sep	25° / 12°	45	7.3	11.8	7.7
Oct	25° / 14°	86	14.3	12.6	6.3
Nov	26° / 16°	147	17.1	13.2	5.4
Dec	27° / 18°	182	19.7	13.5	5.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over 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 (%)	82	81	81	80	81	80	79	78	77	77	75	75	75	73	73	72	72	71	70	70	69	68	67	66	66	65	63	63	62	62
Cloudier (%)	18	19	19	20	19	20	21	22	23	23	25	25	25	27	27	28	28	29	30	30	31	32	33	34	34	35	37	37	38	38

	Clearer (%)	Cloudier (%)
1	82	18
2	81	19
3	81	19
4	80	20
5	81	19
6	80	20
7	79	21
8	78	22
9	77	23
10	77	23
11	75	25
12	75	25
13	75	25
14	73	27
15	73	27
16	72	28
17	72	28
18	71	29
19	70	30
20	70	30
21	69	31
22	68	32
23	67	33
24	66	34
25	66	34
26	65	35
27	63	37
28	63	37
29	62	38
30	62	38

Chance of precipitation in September

Any precipitation

White River gets around 45 mm of rain over 7.3 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 24% and peaks near 33% on the wettest days. The odds climb 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 (%)	18	18	19	19	20	20	20	21	21	22	22	22	23	23	23	23	24	24	24	25	26	27	28	28	29	30	31	32	33	33

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

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 76% 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 (%)	92	92	91	91	90	89	88	87	86	85	84	83	82	81	79	77	76	74	73	71	68	67	65	62	61	59	57	56	54	53
Comfortable (%)	8	8	9	9	10	11	12	13	14	15	16	17	18	19	20	22	23	25	26	28	30	31	33	35	36	38	39	40	41	42
Humid (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	2	2	2	3	3	3	4	4	5	5

	Dry (%)	Comfortable (%)	Humid (%)
1	92	8	0
2	92	8	0
3	91	9	0
4	91	9	0
5	90	10	0
6	89	11	0
7	88	12	0
8	87	13	0
9	86	14	0
10	85	15	0
11	84	16	0
12	83	17	0
13	82	18	0
14	81	19	0
15	79	20	1
16	77	22	1
17	76	23	1
18	74	25	1
19	73	26	1
20	71	28	1
21	68	30	2
22	67	31	2
23	65	33	2
24	62	35	3
25	61	36	3
26	59	38	3
27	57	39	4
28	56	40	4
29	54	41	5
30	53	42	5

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 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)	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 6:11 AM to 5:39 AM, and sunset from 5:40 PM to 5:52 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)	11.5	11.5	11.5	11.6	11.6	11.6	11.6	11.7	11.7	11.7	11.7	11.8	11.8	11.8	11.8	11.9	11.9	11.9	11.9	12.0	12.0	12.0	12.0	12.1	12.1	12.1	12.1	12.2	12.2	12.2
Sunrise (AM)	6:11	6:10	6:09	6:08	6:07	6:06	6:05	6:04	6:03	6:01	6:00	5:59	5:58	5:57	5:56	5:55	5:54	5:52	5:51	5:50	5:49	5:48	5:47	5:46	5:44	5:43	5:42	5:41	5:40	5:39
Sunset (PM)	5:40	5:40	5:41	5:41	5:42	5:42	5:42	5:43	5:43	5:44	5:44	5:44	5:45	5:45	5:45	5:46	5:46	5:47	5:47	5:47	5:48	5:48	5:49	5:49	5:49	5:50	5:50	5:51	5:51	5:52

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.5	6:11	5:40
2	11.5	6:10	5:40
3	11.5	6:09	5:41
4	11.6	6:08	5:41
5	11.6	6:07	5:42
6	11.6	6:06	5:42
7	11.6	6:05	5:42
8	11.7	6:04	5:43
9	11.7	6:03	5:43
10	11.7	6:01	5:44
11	11.7	6:00	5:44
12	11.8	5:59	5:44
13	11.8	5:58	5:45
14	11.8	5:57	5:45
15	11.8	5:56	5:45
16	11.9	5:55	5:46
17	11.9	5:54	5:46
18	11.9	5:52	5:47
19	11.9	5:51	5:47
20	12.0	5:50	5:47
21	12.0	5:49	5:48
22	12.0	5:48	5:48
23	12.0	5:47	5:49
24	12.1	5:46	5:49
25	12.1	5:44	5:49
26	12.1	5:43	5:50
27	12.1	5:42	5:50
28	12.2	5:41	5:51
29	12.2	5:40	5:51
30	12.2	5:39	5:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.24 kWh/m².

For context, solar energy here swings from a low near 3.73 kWh/m² to a high of 5.83 kWh/m² in January across the year — September's 5.24 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)	5.0	5.0	5.0	5.1	5.1	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.4	5.4	5.4
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	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	5.1	Bright
5	5.1	Bright
6	5.1	Bright
7	5.1	Bright
8	5.1	Bright
9	5.2	Bright
10	5.2	Bright
11	5.2	Bright
12	5.2	Bright
13	5.2	Bright
14	5.2	Bright
15	5.2	Bright
16	5.3	Bright
17	5.3	Bright
18	5.3	Bright
19	5.3	Bright
20	5.3	Bright
21	5.3	Bright
22	5.3	Bright
23	5.3	Bright
24	5.3	Bright
25	5.3	Bright
26	5.3	Bright
27	5.3	Bright
28	5.4	Bright
29	5.4	Bright
30	5.4	Bright

Planning a trip in September

Hazard calendar for White River

In seasonPeak

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

White River's monsoon runs October–March, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit White River?

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

7.7

Sightseeing

5th-best month of the year

6.9

Beach & pool

1st-best month of the year

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

What to pack for White River in September

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

In September, White River sees daytime highs around 25°C and nights near 12°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in White River in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in White River peaks around January 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 5 (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)	13	13	12	8	6	5	5	7	8	10	12	13
Level	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate	High	Very high	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	13	Extreme
Mar	12	Extreme
Apr	8	Very high
May	6	High
Jun	5	Moderate
Jul	5	Moderate
Aug	7	High
Sep	8	Very high
Oct	10	Very high
Nov	12	Extreme
Dec	13	Extreme

Air quality in White River in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in White River is worst in July — around 52 µg/m³ PM2.5 (poor), about 3.9× the cleanest month (December, 13 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	20	18	24	26	34	37	52	43	34	23	30	13
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Poor	Poor	Poor	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	20	Moderate
Feb	18	Moderate
Mar	24	Moderate
Apr	26	Moderate
May	34	Moderate
Jun	37	Poor
Jul	52	Poor
Aug	43	Poor
Sep	34	Moderate
Oct	23	Moderate
Nov	30	Moderate
Dec	13	Moderate

Location & terrain

Where is White River?

White River sits at 25.3°S, 31.0°E, 944 m above sea level, in South Africa. The nearest listed city is Mbombela, 16 km away.

Topography around White River

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

Within 3 km, the terrain around White River has only modest variations in elevation — a maximum elevation change of 157 m around an average of 917 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 764 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,070 m.

The land around White River is covered by grassland (39%) and trees (34%) within 3 km, trees (46%) and grassland (29%) within 16 km, and grassland (42%) and trees (36%) within 80 km.

3 km

157 m

grassland 39%

16 km

764 m

trees 46%

80 km

2,070 m

grassland 42%

treesshrubsgrasslandcroplandartificial surfaceswater

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

September weather nearby: Mbombela 16 km · Tekwane 21 km · Sabie 35 km · Matsulu 41 km · Hlanganani 44 km · Mkhuhlu 45 km · Calcutta 45 km · Barberton 51 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 White River (-25.3318°, 31.0117°, elevation 944 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. 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	24	11
2	25	11
3	25	11
4	25	11
5	25	12
6	25	12
7	25	12
8	25	12
9	25	12
10	25	12
11	25	12
12	25	12
13	25	12
14	25	12
15	25	12
16	25	12
17	25	13
18	25	13
19	25	13
20	25	13
21	25	13
22	25	13
23	25	13
24	25	13
25	25	13
26	25	13
27	25	13
28	25	13
29	25	13
30	25	14

	Clearer (%)	Cloudier (%)
1	82	18
2	81	19
3	81	19
4	80	20
5	81	19
6	80	20
7	79	21
8	78	22
9	77	23
10	77	23
11	75	25
12	75	25
13	75	25
14	73	27
15	73	27
16	72	28
17	72	28
18	71	29
19	70	30
20	70	30
21	69	31
22	68	32
23	67	33
24	66	34
25	66	34
26	65	35
27	63	37
28	63	37
29	62	38
30	62	38

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

	Dry (%)	Comfortable (%)	Humid (%)
1	92	8	0
2	92	8	0
3	91	9	0
4	91	9	0
5	90	10	0
6	89	11	0
7	88	12	0
8	87	13	0
9	86	14	0
10	85	15	0
11	84	16	0
12	83	17	0
13	82	18	0
14	81	19	0
15	79	20	1
16	77	22	1
17	76	23	1
18	74	25	1
19	73	26	1
20	71	28	1
21	68	30	2
22	67	31	2
23	65	33	2
24	62	35	3
25	61	36	3
26	59	38	3
27	57	39	4
28	56	40	4
29	54	41	5
30	53	42	5

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

	Clearer (%)	Cloudier (%)
1	82	18
2	81	19
3	81	19
4	80	20
5	81	19
6	80	20
7	79	21
8	78	22
9	77	23
10	77	23
11	75	25
12	75	25
13	75	25
14	73	27
15	73	27
16	72	28
17	72	28
18	71	29
19	70	30
20	70	30
21	69	31
22	68	32
23	67	33
24	66	34
25	66	34
26	65	35
27	63	37
28	63	37
29	62	38
30	62	38

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

	Dry (%)	Comfortable (%)	Humid (%)
1	92	8	0
2	92	8	0
3	91	9	0
4	91	9	0
5	90	10	0
6	89	11	0
7	88	12	0
8	87	13	0
9	86	14	0
10	85	15	0
11	84	16	0
12	83	17	0
13	82	18	0
14	81	19	0
15	79	20	1
16	77	22	1
17	76	23	1
18	74	25	1
19	73	26	1
20	71	28	1
21	68	30	2
22	67	31	2
23	65	33	2
24	62	35	3
25	61	36	3
26	59	38	3
27	57	39	4
28	56	40	4
29	54	41	5
30	53	42	5

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

	Clearer (%)	Cloudier (%)
1	82	18
2	81	19
3	81	19
4	80	20
5	81	19
6	80	20
7	79	21
8	78	22
9	77	23
10	77	23
11	75	25
12	75	25
13	75	25
14	73	27
15	73	27
16	72	28
17	72	28
18	71	29
19	70	30
20	70	30
21	69	31
22	68	32
23	67	33
24	66	34
25	66	34
26	65	35
27	63	37
28	63	37
29	62	38
30	62	38

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

	Dry (%)	Comfortable (%)	Humid (%)
1	92	8	0
2	92	8	0
3	91	9	0
4	91	9	0
5	90	10	0
6	89	11	0
7	88	12	0
8	87	13	0
9	86	14	0
10	85	15	0
11	84	16	0
12	83	17	0
13	82	18	0
14	81	19	0
15	79	20	1
16	77	22	1
17	76	23	1
18	74	25	1
19	73	26	1
20	71	28	1
21	68	30	2
22	67	31	2
23	65	33	2
24	62	35	3
25	61	36	3
26	59	38	3
27	57	39	4
28	56	40	4
29	54	41	5
30	53	42	5