Juba weather in September

In September, Juba sees average daytime highs of 31°C and overnight lows near 22°C, with 113 mm of rain across 17.9 wet days and about 12 hours of daylight. It is the 10th-warmest and 5th-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 29% 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 Juba's 4th-clearest and 9th-windiest month. For the whole year in context, see Juba's year-round climate.

Daytime high
31°
10th warmest
Overnight low
22°
3rd coldest
Rainfall
113 mm
17.9 wet days
Daylight
12 hours
6:47 AM – 6:49 PM
Cloud cover
59%
4th clearest
Wind
5 km/h
9th windiest
Solar energy
5.85 kWh/m²
Travel score
3.7
out of 10

Juba is capital of the Republic of South Sudan.

Density
8,654/km²
people per km²
Founded
1922

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 Juba reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13022
23022
33022
43022
53122
63122
73122
83122
93122
103122
113122
123122
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122

How September really feels in Juba

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.

Juba weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan36° / 24°4111.82.5
Feb37° / 25°61.411.81.7
Mar37° / 26°307.3121.7
Apr35° / 25°9715.512.12.3
May32° / 24°12218.512.23.0
Jun31° / 23°11117.312.33.6
Jul30° / 22°1271912.33.9
Aug30° / 22°1352112.23.7
Sep31° / 22°11317.9123.7
Oct31° / 22°17220.811.93.4
Nov32° / 23°7211.511.83.7
Dec34° / 23°92.211.73.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14852
24951
34951
45149
55149
65248
75347
85446
95545
105644
115743
125743
135743
145743
155743
165644
175644
185545
195545
205347
215248
225149
234951
244951
254753
264654
274555
284357
294357
304258

Chance of precipitation in September

Any precipitation

Juba gets around 113 mm of rain over 17.9 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 60% 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
267
367
467
566
666
766
866
965
1064
1164
1263
1362
1461
1560
1659
1758
1857
1956
2055
2154
2254
2354
2454
2555
2655
2756
2857
2958
3059

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
113366
213465
313465
413465
503466
603466
703466
803367
903367
1003367
1103268
1203268
1303268
1403268
1503268
1603268
1703169
1813168
1913168
2013168
2113168
2213168
2313168
2413168
2513168
2613168
2713069
2823068
2922969
3022870

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 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
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 6:51 AM to 6:44 AM, and sunset from 6:56 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:516:56
212.16:506:56
312.16:506:55
412.16:506:55
512.16:506:54
612.16:506:54
712.16:496:53
812.16:496:53
912.16:496:52
1012.16:496:52
1112.06:486:51
1212.06:486:51
1312.06:486:50
1412.06:486:50
1512.06:476:49
1612.06:476:49
1712.06:476:48
1812.06:476:48
1912.06:476:47
2012.06:466:47
2112.06:466:46
2212.06:466:46
2312.06:466:45
2412.06:456:45
2512.06:456:44
2612.06:456:44
2712.06:456:43
2812.06:456:43
2912.06:446:42
3012.06:446:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.85 kWh/m².

For context, solar energy here swings from a low near 5.26 kWh/m² to a high of 6.18 kWh/m² in February across the year — September's 5.85 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Juba

In seasonPeak

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

Juba'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 Juba?

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

3.7
Sightseeing
2nd-best month of the year
5.4
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Juba.

What to pack for Juba in September

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

In September, Juba sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Juba in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Juba peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 17UV 15Dec 15UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct13Extreme
Nov10Very high
Dec9Very high

Air quality in Juba 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 Juba is worst in December — around 90 µg/m³ PM2.5 (unhealthy), about 9.2× the cleanest month (May, 10 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModerateGoodModerateModerateUnhealthyDec 2490 µg/m³May 1010 µg/m³
PM2.5 (µg/m³)Level
Jan88Unhealthy
Feb32Moderate
Mar17Moderate
Apr11Good
May10Good
Jun17Moderate
Jul19Moderate
Aug14Moderate
Sep13Moderate
Oct11Good
Nov22Moderate
Dec90Unhealthy
Location & terrain

Where is Juba?

Juba sits at 4.9°N, 31.6°E, 518 m above sea level, in South Sudan. The nearest listed city is Torit, 120 km away.

ToritYeiMoyoPajokBorYumbeAdjumaniKoboko

Topography around Juba

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

Within 3 km, the terrain around Juba has only modest variations in elevation — a maximum elevation change of 109 m around an average of 488 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 289 m; within 80 km, large variations in elevation — a maximum elevation change of 958 m.

The land around Juba is covered by artificial surfaces (86%) within 3 km, grassland (71%) within 16 km, and grassland (74%) within 80 km.

3 km
109 m
16 km
289 m
80 km
958 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: Torit 120 km · Yei 131 km · Moyo 133 km · Pajok 148 km · Bor 151 km · Yumbe 159 km · Adjumani 166 km · Koboko 174 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 Juba (4.8517°, 31.5825°, elevation 518 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).