Sibiti weather in September

In September, Sibiti sees average daytime highs of 28°C and overnight lows near 21°C, with 22 mm of rain across 6.7 wet days and about 12 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 29°C by the end. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Sibiti's 8th-clearest and 2nd-windiest month. For the whole year in context, see Sibiti's year-round climate.

Daytime high
28°
9th warmest
Overnight low
21°
4th coldest
Rainfall
22 mm
6.7 wet days
Daylight
12 hours
6:02 AM – 6:00 PM
Cloud cover
84%
8th clearest
Wind
7 km/h
2nd windiest
Solar energy
3.64 kWh/m²
Travel score
6.1
out of 10

Sibiti is town.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 29°C by the end.

A typical September day in Sibiti reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
62720
72720
82720
92720
102820
112821
122821
132821
142821
152821
162821
172821
182821
192821
202821
212821
222821
232821
242821
252821
262921
272921
282921
292921
302921

How September really feels in Sibiti

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Sibiti weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°2132612.23.3
Feb30° / 22°17622.112.13.3
Mar30° / 22°18124.3123.1
Apr30° / 22°20924.611.93.1
May29° / 22°11419.211.84.2
Jun27° / 20°82.111.87.2
Jul26° / 19°30.611.87.6
Aug26° / 19°61.411.97.2
Sep28° / 21°226.7126.1
Oct29° / 22°14421.612.13.8
Nov29° / 22°26627.712.23.0
Dec29° / 22°28028.912.23.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7298
8298
9397
10397
11397
12397
13496
14496
15496
16496
17595
18595
19595
20595
21694
22694
23694
24694
25694
26793
27793
28793
29793
30892

Chance of precipitation in September

Any precipitation

Sibiti gets around 22 mm of rain over 6.7 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 23% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
19
29
310
410
511
612
713
814
915
1016
1117
1218
1319
1421
1522
1623
1724
1825
1926
2027
2129
2230
2331
2432
2534
2635
2736
2838
2939
3041

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 89% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
115850
213870
312880
411890
510900
69910
78920
88920
97930
107930
116931
126931
136931
145941
155932
165932
174933
184924
194924
203925
213916
223898
232899
2428810
2528612
2618514
2718415
2818217
2918019
3007921

Wind in September

Winds average 7 km/h in September.

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.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over September. Sunrise moves from 6:08 AM to 5:55 AM, and sunset from 6:04 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:086:04
211.96:086:04
311.96:086:04
411.96:076:03
511.96:076:03
611.96:066:03
711.96:066:03
812.06:056:02
912.06:056:02
1012.06:046:02
1112.06:046:02
1212.06:036:01
1312.06:036:01
1412.06:026:01
1512.06:026:01
1612.06:026:00
1712.06:016:00
1812.06:016:00
1912.06:006:00
2012.06:005:59
2112.05:595:59
2212.05:595:59
2312.05:585:58
2412.05:585:58
2512.05:575:58
2612.05:575:58
2712.05:565:57
2812.05:565:57
2912.05:555:57
3012.05:555:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.64 kWh/m².

For context, solar energy here swings from a low near 3.42 kWh/m² to a high of 5 kWh/m² in March across the year — September's 3.64 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.5Moderate
83.5Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.8Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Sibiti

In seasonPeak

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

Sibiti's rainy season runs October–April, 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 Sibiti?

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

6.1
Sightseeing
4th-best month of the year
6.7
Beach & pool
4th-best month of the year

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

What to pack for Sibiti in September

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

In September, Sibiti sees daytime highs around 28°C and nights near 21°C. Pack light clothes. About 7 days see rain.

light clothes

UV index in Sibiti in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sibiti peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeMar 16UV 15Jun 20UV 7
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun7High
Jul7Very high
Aug8Very high
Sep11Extreme
Oct14Extreme
Nov11Extreme
Dec10Extreme

Air quality in Sibiti 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 Sibiti is worst in August — around 49 µg/m³ PM2.5 (poor), about 4.3× the cleanest month (November, 11 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateAug 1648 µg/m³Nov 1812 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar15Moderate
Apr13Moderate
May22Moderate
Jun34Moderate
Jul43Poor
Aug49Poor
Sep41Poor
Oct16Moderate
Nov11Good
Dec14Moderate
Location & terrain

Where is Sibiti?

Sibiti sits at 3.7°S, 13.3°E, 531 m above sea level, in Republic of the Congo. The nearest listed city is Nkayi, 56 km away.

NkayiLoudimaKayesMouyondziBouansaLoutétéDolisieMossendjo

Topography around Sibiti

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

Within 3 km, the terrain around Sibiti has only modest variations in elevation — a maximum elevation change of 103 m around an average of 509 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 305 m; within 80 km, large variations in elevation — a maximum elevation change of 726 m.

The land around Sibiti is covered by trees (46%) and grassland (41%) within 3 km, trees (83%) within 16 km, and trees (66%) and grassland (33%) within 80 km.

3 km
103 m
16 km
305 m
80 km
726 m
treesshrubsgrasslandartificial surfaces
September weather nearby: Nkayi 56 km · Loudima 58 km · Kayes 59 km · Mouyondzi 73 km · Bouansa 75 km · Loutété 88 km · Dolisie 95 km · Mossendjo 108 km

Republic of the Congo travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$2,515
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
46%
of population, 2021
Road deaths
29.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Roman Catholic 33%Awakening Churches/Christian Revival 22%Protestant 20%none 11%

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 Sibiti (-3.6819°, 13.3498°, elevation 531 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).