Dolisie weather in September

In September, Dolisie sees average daytime highs of 27°C and overnight lows near 20°C, with 18 mm of rain across 5.1 wet days and about 12 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. 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 Dolisie's 11th-clearest and 1st-windiest month. For the whole year in context, see Dolisie's year-round climate.

Daytime high
27°
9th warmest
Overnight low
20°
4th coldest
Rainfall
18 mm
5.1 wet days
Daylight
12 hours
6:04 AM – 6:03 PM
Cloud cover
86%
11th clearest
Wind
8 km/h
1st windiest
Solar energy
3.35 kWh/m²
Travel score
6.6
out of 10

Dolisie is city in Congo-Brazzaville.

Founded
1934

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 27°C through the month.

A typical September day in Dolisie reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12619
22619
32619
42619
52620
62720
72720
82720
92720
102720
112720
122720
132720
142720
152720
162720
172720
182720
192720
202720
212720
222720
232820
242821
252821
262821
272821
282821
292821
302821

How September really feels in Dolisie

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.

Dolisie 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°22026.812.23.2
Feb30° / 22°18023.312.13.2
Mar30° / 22°17724.5123.1
Apr30° / 22°18023.611.93.2
May29° / 22°9417.511.84.5
Jun27° / 20°51.411.87.3
Jul26° / 18°20.311.87.7
Aug26° / 19°51.211.97.3
Sep27° / 20°185.1126.6
Oct29° / 22°1222112.14.0
Nov29° / 22°24527.312.23.1
Dec29° / 22°25828.112.23.2

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 3% of September, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7298
8298
9298
10298
11397
12397
13397
14397
15397
16397
17397
18397
19496
20496
21496
22496
23496
24496
25496
26496
27496
28496
29595
30595

Chance of precipitation in September

Any precipitation

Dolisie gets around 18 mm of rain over 5.1 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 18% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
17
28
38
49
59
610
710
811
912
1013
1113
1214
1315
1415
1516
1617
1718
1818
1919
2020
2121
2222
2323
2424
2525
2627
2728
2830
2931
3033

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
124760
222780
320800
418820
517830
615850
714860
813870
912880
1011890
1110900
129910
139910
148920
157930
167930
176940
185950
195950
205941
214951
224951
233952
243952
252953
262944
272935
281936
291927
301918

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:11 AM to 5:58 AM, and sunset from 6:07 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:116:07
211.96:116:06
311.96:116:06
411.96:106:06
511.96:106:06
611.96:096:05
711.96:096:05
811.96:086:05
911.96:086:05
1012.06:076:04
1112.06:076:04
1212.06:066:04
1312.06:066:04
1412.06:056:03
1512.06:056:03
1612.06:046:03
1712.06:046:03
1812.06:036:02
1912.06:036:02
2012.06:026:02
2112.06:026:02
2212.06:016:01
2312.06:016:01
2412.06:006:01
2512.06:006:01
2612.06:006:01
2712.05:596:00
2812.05:596:00
2912.05:586:00
3012.05:586:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.35 kWh/m².

For context, solar energy here swings from a low near 3.27 kWh/m² to a high of 4.88 kWh/m² in March across the year — September's 3.35 kWh/m² sits near the bottom.

01234151015202530
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.2Moderate
43.3Moderate
53.3Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.3Moderate
133.3Moderate
143.3Moderate
153.3Moderate
163.3Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.6Moderate
283.6Moderate
293.6Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Dolisie

In seasonPeak

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

Dolisie'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 Dolisie?

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

6.6
Sightseeing
4th-best month of the year
6.7
Beach & pool
4th-best month of the year

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

What to pack for Dolisie in September

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

In September, Dolisie sees daytime highs around 27°C and nights near 20°C. Pack light clothes. About 5 days see rain.

light clothes

UV index in Dolisie 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 Dolisie peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeMar 16UV 15Jun 22UV 6
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun6High
Jul7High
Aug7Very high
Sep11Extreme
Oct14Extreme
Nov11Extreme
Dec10Extreme

Air quality in Dolisie 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 Dolisie is worst in July — around 48 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (October, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1547 µg/m³Oct 2421 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb28Moderate
Mar25Moderate
Apr25Moderate
May33Moderate
Jun41Poor
Jul48Poor
Aug39Poor
Sep29Moderate
Oct21Moderate
Nov21Moderate
Dec24Moderate
Location & terrain

Where is Dolisie?

Dolisie sits at 4.2°S, 12.7°E, 332 m above sea level, in Republic of the Congo. The nearest listed city is Loudima, 45 km away.

Buco ZauNkayiKayesTshelaSibitiLoandjili

Topography around Dolisie

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

Within 3 km, the terrain around Dolisie has only modest variations in elevation — a maximum elevation change of 116 m around an average of 338 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 573 m; within 80 km, large variations in elevation — a maximum elevation change of 874 m.

The land around Dolisie is covered by grassland (45%) and artificial surfaces (33%) within 3 km, grassland (59%) and trees (37%) within 16 km, and trees (60%) and grassland (38%) within 80 km.

3 km
116 m
16 km
573 m
80 km
874 m
treesshrubsgrasslandartificial surfaces
September weather nearby: Loudima 45 km · Belize 51 km · Buco Zau 65 km · Nkayi 69 km · Kayes 69 km · Tshela 94 km · Sibiti 95 km · Loandjili 109 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 Dolisie (-4.1983°, 12.6666°, elevation 332 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).