Bor weather in September

In September, Bor sees average daytime highs of 31°C and overnight lows near 23°C, with 121 mm of rain across 17 wet days and about 12 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 26% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Bor's 6th-clearest and 10th-windiest month. For the whole year in context, see Bor's year-round climate.

Daytime high
31°
10th warmest
Overnight low
23°
3rd coldest
Rainfall
121 mm
17 wet days
Daylight
12 hours
6:47 AM – 6:49 PM
Cloud cover
60%
6th clearest
Wind
6 km/h
10th windiest
Solar energy
5.58 kWh/m²
Travel score
3.9
out of 10

Bor is city in South Sudan.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Bor reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°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 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123

How September really feels in Bor

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Bor weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan36° / 25°30.611.72.3
Feb38° / 26°41.311.81.4
Mar38° / 27°234.6121.3
Apr35° / 26°6511.912.12.1
May33° / 25°12617.912.33.0
Jun31° / 24°12218.512.43.6
Jul30° / 23°14121.512.33.7
Aug30° / 23°14021.512.23.7
Sep31° / 23°12117123.9
Oct31° / 23°13518.911.93.5
Nov33° / 24°449.511.73.6
Dec35° / 24°71.511.63.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24753
34852
44852
54852
64852
75050
85050
95050
105149
115149
125248
135248
145248
155248
165248
175248
185248
195149
205149
215050
224951
234951
244852
254753
264753
274555
284357
294357
304258

Chance of precipitation in September

Any precipitation

Bor gets around 121 mm of rain over 17 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 57% and peaks near 67% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
167
266
365
464
563
662
761
860
959
1058
1157
1256
1355
1454
1553
1653
1753
1852
1952
2052
2152
2253
2353
2454
2555
2655
2756
2857
2958
3058

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
10793
20892
30892
40892
50892
60892
70991
80991
90991
100991
110991
121990
1311089
1411089
1511089
1611089
1711089
1811188
1911188
2001189
2101189
2201189
2301189
2401189
2501189
2601189
2711188
2811188
2911188
3011188

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:50 AM to 6:45 AM, and sunset from 6:57 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:506:57
212.16:506:57
312.16:506:56
412.16:496:56
512.16:496:55
612.16:496:54
712.16:496:54
812.16:496:53
912.16:486:53
1012.16:486:52
1112.16:486:52
1212.16:486:51
1312.16:486:51
1412.06:476:50
1512.06:476:50
1612.06:476:49
1712.06:476:49
1812.06:476:48
1912.06:466:47
2012.06:466:47
2112.06:466:46
2212.06:466:46
2312.06:466:45
2412.06:466:45
2512.06:456:44
2612.06:456:44
2712.06:456:43
2812.06:456:43
2912.06:456:42
3012.06:456:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.58 kWh/m².

For context, solar energy here swings from a low near 5.01 kWh/m² to a high of 6.17 kWh/m² in February across the year — September's 5.58 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Bor

In seasonPeak

In September, Bor sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Bor's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Bor?

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

3.9
Sightseeing
1st-best month of the year
5.5
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Bor.

What to pack for Bor in September

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

In September, Bor sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Bor 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 Bor peaks around March 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 15UV 14Dec 13UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar14Extreme
Apr11Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct13Extreme
Nov9Very high
Dec9Very high

Air quality in Bor 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 Bor is worst in December — around 82 µg/m³ PM2.5 (unhealthy), about 8.3× the cleanest month (May, 10 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModerateGoodModerateGoodModerateUnhealthyDec 2482 µg/m³May 1410 µg/m³
PM2.5 (µg/m³)Level
Jan81Unhealthy
Feb50Poor
Mar23Moderate
Apr14Moderate
May10Good
Jun16Moderate
Jul17Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov24Moderate
Dec82Unhealthy
Location & terrain

Where is Bor?

Bor sits at 6.2°N, 31.6°E, 429 m above sea level, in South Sudan. The nearest listed city is Juba, 151 km away.

JubaRumbekToritYeiPajokLeerMoyoYumbe

Topography around Bor

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

Within 3 km, the terrain around Bor has only modest variations in elevation — a maximum elevation change of 8 m around an average of 424 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 18 m; within 80 km, significant variations in elevation — a maximum elevation change of 283 m.

The land around Bor is covered by wetland (56%) and grassland (29%) within 3 km, wetland (57%) and grassland (29%) within 16 km, and grassland (60%) and wetland (22%) within 80 km.

3 km
8 m
16 km
18 m
80 km
283 m
treesshrubsgrasslandartificial surfaceswetland
September weather nearby: Juba 151 km · Rumbek 218 km · Torit 229 km · Yei 255 km · Pajok 280 km · Leer 281 km · Moyo 284 km · Yumbe 307 km

South Sudan travel facts

Travel advisory
Level 4
Do Not Travel
Prices
≈ 6% of US
price level, 2021
GDP per capita
$1,080
2015
Happiness
2.8 / 10
World Happiness, 2019
Homicide rate
14
per 100k, 2012
Road deaths
36.7
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Christian 61%folk religion 33%Muslim 6%

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 Bor (6.2089°, 31.5586°, elevation 429 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).