Cela weather in September

In September, Cela sees average daytime highs of 29°C and overnight lows near 15°C, with 36 mm of rain across 9.1 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Cela's 5th-clearest and 6th-windiest month. For the whole year in context, see Cela's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
15°
5th coldest
Rainfall
36 mm
9.1 wet days
Daylight
11 h 54 min
5:56 AM – 5:52 PM
Cloud cover
41%
5th clearest
Wind
6 km/h
6th windiest
Solar energy
6.11 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Cela reaches about 29°C in the afternoon and slips back to 15°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13014
23014
33014
43014
53014
63015
73015
83015
93015
103015
113015
123015
133015
143015
153015
163015
173015
182916
192916
202916
212916
222916
232916
242916
252916
262916
272916
282916
292916
302916

Cela weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°13318.912.65.2
Feb26° / 16°11316.212.45.2
Mar26° / 16°16622.612.14.6
Apr26° / 16°841511.85.7
May27° / 14°41.311.58.3
Jun27° / 12°0011.38.9
Jul28° / 12°0011.48.5
Aug30° / 13°20.711.66.9
Sep29° / 15°369.111.95.6
Oct27° / 17°14526.112.34.1
Nov25° / 17°19126.612.53.9
Dec25° / 16°15822.212.74.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 28% of September, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28713
38614
48614
58614
68515
78515
88416
98416
108416
118317
128317
138218
148119
158119
168020
178020
187921
197921
207723
217624
227624
237426
247327
257228
267129
276931
286832
296634
306436

Chance of precipitation in September

Any precipitation

Cela gets around 36 mm of rain over 9.1 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 31% and peaks near 63% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
18
28
39
410
510
611
712
813
915
1016
1118
1220
1322
1424
1526
1628
1731
1834
1936
2039
2142
2244
2347
2449
2552
2654
2757
2859
2961
3063

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
183161
282171
381181
479192
578202
677212
775232
873252
970273
1068293
1165314
1263334
1359365
1456386
1553407
1649429
17454510
18414712
19384914
20345115
21315118
22275320
23245422
24225424
25195427
26175429
27155332
28145135
29135037
30114840

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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:06 AM to 5:46 AM, and sunset from 5:53 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:065:53
211.86:055:53
311.86:055:52
411.86:045:52
511.86:035:52
611.86:035:52
711.86:025:52
811.96:015:52
911.96:015:52
1011.96:005:52
1111.95:595:52
1211.95:585:52
1311.95:585:52
1411.95:575:52
1511.95:565:52
1611.95:565:52
1711.95:555:52
1812.05:545:52
1912.05:545:52
2012.05:535:52
2112.05:525:52
2212.05:525:52
2312.05:515:52
2412.05:505:52
2512.05:495:52
2612.05:495:52
2712.15:485:52
2812.15:475:52
2912.15:475:52
3012.15:465:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.11 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.38 kWh/m² to a high of 6.11 kWh/m² in September across the year — September's 6.11 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.0Intense
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Bright
306.0Bright
Planning a trip in September

Hazard calendar for Cela

In seasonPeak

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

Cela's monsoon runs October–March, when most of the year's rain falls.

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

Is September a good time to visit Cela?

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

5.6
Sightseeing
6th-best month of the year
7.3
Beach & pool
5th-best month of the year

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

What to pack for Cela in September

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

In September, Cela sees daytime highs around 29°C and nights near 15°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Cela 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 Cela peaks around January 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 14 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 highExtremeJan 18UV 16Aug 14UV 9
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar16Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug8Very high
Sep11Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme

Air quality in Cela 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 Cela is worst in July — around 138 µg/m³ PM2.5 (unhealthy), about 17.7× the cleanest month (December, 8 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateGoodJul 21135 µg/m³Dec 168 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr9Good
May25Moderate
Jun74Unhealthy
Jul138Unhealthy
Aug124Unhealthy
Sep59Unhealthy
Oct21Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Cela?

Cela sits at 11.4°S, 15.1°E, 1,308 m above sea level, in Angola. The nearest listed city is Quissecula, 5.0 km away.

Ucu SelesChindumboCondaLonduimbaliAlto Hama

Topography around Cela

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

Within 3 km, the terrain around Cela has only modest variations in elevation — a maximum elevation change of 86 m around an average of 1,310 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 800 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,709 m.

The land around Cela is covered by grassland (43%) and cropland (42%) within 3 km, grassland (32%), cropland (26%) and shrubs (23%) within 16 km, and grassland (33%) and trees (28%) within 80 km.

3 km
86 m
16 km
800 m
80 km
1,709 m
treesshrubsgrasslandcroplandartificial surfaceswetland
September weather nearby: Quissecula 5.0 km · Quibala 78 km · Capunda 78 km · Ucu Seles 89 km · Chindumbo 93 km · Conda 93 km · Londuimbali 93 km · Alto Hama 101 km

Angola travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$3,129
2025
Happiness
3.8 / 10
World Happiness, 2017
Homicide rate
4.1
per 100k, 2016
Road deaths
26.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 413
Religion
Roman Catholic 41%Protestant 38%none 12%other 9%

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 Cela (-11.4217°, 15.1235°, elevation 1,308 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).