Owando weather in September

In September, Owando sees average daytime highs of 30°C and overnight lows near 22°C, with 131 mm of rain across 23.6 wet days and about 12 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 6% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Owando's 6th-clearest and 4th-windiest month. For the whole year in context, see Owando's year-round climate.

Daytime high
30°
7th warmest
Overnight low
22°
3rd coldest
Rainfall
131 mm
23.6 wet days
Daylight
12 hours
5:51 AM – 5:51 PM
Cloud cover
76%
6th clearest
Wind
5 km/h
4th windiest
Solar energy
5.03 kWh/m²
Travel score
3.3
out of 10

Owando is town.

Density
94/km²
people per km²
Founded
1903

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 30°C through the month.

A typical September day in Owando reaches about 30°C in the afternoon and slips back to 22°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 32°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
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022

How September really feels in Owando

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.

Owando weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°8115.4123.7
Feb32° / 22°10716.5123.2
Mar32° / 23°14521.4123.0
Apr31° / 23°14923.2122.9
May31° / 23°12121.8123.4
Jun30° / 22°5913.3124.6
Jul29° / 22°4912.3125.0
Aug30° / 22°7917.2124.2
Sep30° / 22°13123.6123.3
Oct30° / 22°18327.1123.0
Nov30° / 22°17424.4123.2
Dec30° / 22°11219.9123.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22674
32674
42773
52674
62674
72674
82674
92674
102674
112674
122674
132674
142674
152674
162674
172674
182575
192476
202476
212476
222377
232377
242179
252179
262080
272080
281981
291882
301882

Chance of precipitation in September

Any precipitation

Owando gets around 131 mm of rain over 23.6 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 79% and peaks near 86% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
170
271
372
473
574
674
775
876
976
1077
1177
1278
1378
1478
1579
1679
1779
1880
1980
2081
2181
2282
2382
2483
2584
2685
2785
2886
2986
3086

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 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11090
2892
3793
4793
5694
6595
7595
8496
9496
10496
11397
12397
13397
14397
15298
16298
17298
18298
19298
20298
21298
22199
23199
24199
25199
26199
27199
280100
290100
300100

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 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
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 hours 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 0 minutes over September. Sunrise moves from 5:56 AM to 5:46 AM, and sunset from 5:56 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:565:56
212.05:565:56
312.05:565:55
412.05:555:55
512.05:555:55
612.05:555:54
712.05:545:54
812.05:545:53
912.05:535:53
1012.05:535:53
1112.05:535:52
1212.05:525:52
1312.05:525:52
1412.05:525:51
1512.05:515:51
1612.05:515:51
1712.05:505:50
1812.05:505:50
1912.05:505:50
2012.05:495:49
2112.05:495:49
2212.05:495:49
2312.05:485:48
2412.05:485:48
2512.05:475:47
2612.05:475:47
2712.05:475:47
2812.05:465:46
2912.05:465:46
3012.05:465:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.03 kWh/m².

For context, solar energy here swings from a low near 4.86 kWh/m² to a high of 5.48 kWh/m² in February across the year — September's 5.03 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Is September a good time to visit Owando?

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

3.3
Sightseeing
7th-best month of the year
4.5
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Owando.

What to pack for Owando in September

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

In September, Owando sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Owando 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 Owando peaks around March 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 17UV 13Jun 21UV 8
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar13Extreme
Apr12Extreme
May11Extreme
Jun8Very high
Jul8Very high
Aug9Very high
Sep12Extreme
Oct13Extreme
Nov10Very high
Dec9Very high

Air quality in Owando 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 Owando is worst in August — around 41 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (October, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateAug 1040 µg/m³Oct 1811 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb34Moderate
Mar24Moderate
Apr18Moderate
May21Moderate
Jun30Moderate
Jul39Poor
Aug41Poor
Sep17Moderate
Oct10Good
Nov14Moderate
Dec23Moderate
Location & terrain

Where is Owando?

Owando sits at 0.5°S, 15.9°E, 355 m above sea level, in Republic of the Congo. The nearest listed city is Makoua, 62 km away.

MakouaOyoMossakaGambomaBoloboPokolaOuessoDjambala

Topography around Owando

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

Within 3 km, the terrain around Owando has only modest variations in elevation — a maximum elevation change of 49 m around an average of 324 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, only modest variations in elevation — a maximum elevation change of 173 m.

The land around Owando is covered by trees (53%) and grassland (32%) within 3 km, trees (67%) and grassland (31%) within 16 km, and trees (73%) and grassland (27%) within 80 km.

3 km
49 m
16 km
101 m
80 km
173 m
treesgrasslandartificial surfaceswater
September weather nearby: Makoua 62 km · Oyo 76 km · Mossaka 129 km · Gamboma 155 km · Bolobo 190 km · Pokola 215 km · Ouesso 234 km · Djambala 262 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 Owando (-0.4819°, 15.8999°, elevation 355 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).