Ucuma weather in September

In September, Ucuma sees average daytime highs of 30°C and overnight lows near 14°C, with 26 mm of rain across 5 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-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 53% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Ucuma's 5th-clearest and 5th-windiest month. For the whole year in context, see Ucuma's year-round climate.

Daytime high
30°
1st warmest
Overnight low
14°
5th coldest
Rainfall
26 mm
5 wet days
Daylight
11 h 54 min
5:56 AM – 5:52 PM
Cloud cover
38%
5th clearest
Wind
6 km/h
5th windiest
Solar energy
6.37 kWh/m²
Travel score
6.0
out of 10

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 Ucuma reaches about 30°C in the afternoon and slips back to 14°C overnight — a 16°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 about 1°C warmer than August and about 2°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13013
23013
33013
43013
53013
63013
73013
83013
93013
103013
113013
123013
133013
143013
153014
163014
173014
183014
193014
203014
213014
223014
233014
243014
252914
262914
272914
282914
292915
302915

Ucuma weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 15°19819.712.75.1
Feb25° / 15°1951812.45.1
Mar25° / 15°2562412.14.5
Apr25° / 15°9713.911.76.1
May26° / 12°4111.48.7
Jun26° / 10°0011.39.3
Jul26° / 10°0011.39.1
Aug29° / 12°10.311.67.5
Sep30° / 14°26511.96.0
Oct28° / 15°16721.112.34.7
Nov25° / 16°27425.112.64.2
Dec24° / 15°23923.112.74.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 18%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28713
38713
48713
58713
68614
78614
88515
98515
108515
118515
128416
138416
148416
158317
168317
178317
188218
198218
208020
218020
228020
237921
247921
257921
267723
277723
287624
297624
307426

Chance of precipitation in September

Any precipitation

Ucuma gets around 26 mm of rain over 5 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 17% and peaks near 37% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
13
23
34
44
55
65
76
86
97
108
119
1211
1312
1414
1515
1616
1718
1819
1921
2023
2124
2226
2327
2429
2530
2632
2733
2834
2936
3037

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19820
29820
39820
49730
59730
69730
79640
89550
99460
109370
119280
129091
1388111
1487121
1585141
1683161
1781181
1879201
1976222
2073252
2171272
2269292
2365323
2462344
2560364
2658375
2755396
2853407
2950419
30484210

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
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 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 24 minutes over September. Sunrise moves from 6:07 AM to 5:46 AM, and sunset from 5:52 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:075:52
211.86:065:52
311.86:065:52
411.86:055:52
511.86:045:52
611.86:045:52
711.86:035:52
811.86:025:52
911.86:015:52
1011.96:015:52
1111.96:005:52
1211.95:595:52
1311.95:585:52
1411.95:585:52
1511.95:575:52
1611.95:565:52
1711.95:555:52
1812.05:555:52
1912.05:545:52
2012.05:535:52
2112.05:535:52
2212.05:525:52
2312.05:515:52
2412.05:505:52
2512.05:505:52
2612.15:495:52
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 6.37 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.42 kWh/m² to a high of 6.37 kWh/m² in September across the year — September's 6.37 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Ucuma

In seasonPeak

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

Ucuma'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 Ucuma?

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

6.0
Sightseeing
6th-best month of the year
8.0
Beach & pool
5th-best month of the year

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

What to pack for Ucuma in September

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

In September, Ucuma sees daytime highs around 30°C and nights near 14°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Ucuma 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 Ucuma peaks around January 18 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 20 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 17Jul 20UV 9
UV index (midday)Level
Jan17Extreme
Feb15Extreme
Mar16Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Ucuma 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 Ucuma is worst in August — around 101 µg/m³ PM2.5 (unhealthy), about 10.6× the cleanest month (January, 10 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateGoodAug 1298 µg/m³Jan 110 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar12Moderate
Apr14Moderate
May27Moderate
Jun53Poor
Jul87Unhealthy
Aug101Unhealthy
Sep43Poor
Oct19Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Ucuma?

Ucuma sits at 13.0°S, 15.1°E, 1,906 m above sea level, in Angola. The nearest listed city is Longonjo, 21 km away.

LonduimbaliCubal

Topography around Ucuma

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

Within 3 km, the terrain around Ucuma has significant variations in elevation — a maximum elevation change of 333 m around an average of 1,901 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 864 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,833 m.

The land around Ucuma is covered by grassland (46%) and trees (27%) within 3 km, trees (30%), cropland (30%) and shrubs (25%) within 16 km, and cropland (34%), shrubs (27%) and grassland (23%) within 80 km.

3 km
333 m
16 km
864 m
80 km
1,833 m
treesshrubsgrasslandcropland
September weather nearby: Longonjo 21 km · Ganda 46 km · Caála 56 km · Ecunna 58 km · Balombo 74 km · Huambo 76 km · Londuimbali 85 km · Cubal 89 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 Ucuma (-12.9612°, 15.0596°, elevation 1,906 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).