Ucu Seles weather in September

In September, Ucu Seles sees average daytime highs of 26°C and overnight lows near 17°C, with 13 mm of rain across 3.5 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 43% of the time in September, and the air most often feels humid.

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 Ucu Seles's 4th-clearest and 1st-windiest month. For the whole year in context, see Ucu Seles's year-round climate.

Daytime high
26°
8th warmest
Overnight low
17°
4th coldest
Rainfall
13 mm
3.5 wet days
Daylight
11 h 54 min
5:59 AM – 5:55 PM
Cloud cover
47%
4th clearest
Wind
6 km/h
1st windiest
Solar energy
5.69 kWh/m²
Travel score
7.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in Ucu Seles reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12516
22516
32516
42516
52516
62516
72516
82516
92516
102516
112516
122516
132516
142516
152616
162617
172617
182617
192617
202617
212617
222617
232617
242617
252617
262617
272617
282617
292618
302618

Ucu Seles weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 19°11015.812.65.5
Feb27° / 19°11814.612.45.3
Mar27° / 20°27723.712.14.3
Apr27° / 20°21624.511.84.2
May27° / 19°266.711.57.2
Jun26° / 16°10.111.38.9
Jul25° / 15°0011.49.2
Aug24° / 15°20.511.69.0
Sep26° / 17°133.511.97.9
Oct26° / 19°8617.512.35.3
Nov25° / 19°20325.212.54.1
Dec25° / 19°14919.312.75.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
28020
37921
47921
57921
67921
77921
87921
97822
107822
117723
127723
137624
147426
157426
167228
177030
186931
196733
206535
216337
226139
235941
245842
255545
265446
275248
285050
294951
304852

Chance of precipitation in September

Any precipitation

Ucu Seles gets around 13 mm of rain over 3.5 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 13% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
14
24
34
44
54
65
75
86
97
107
118
129
1310
1411
1512
1613
1713
1814
1915
2016
2117
2217
2318
2419
2520
2621
2722
2823
2925
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 66% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)
161390
260400
359410
457430
556440
654460
752480
850500
947521
1045541
1142571
1239601
1336622
1433652
1530682
1627703
1724733
1821763
1919774
2016804
2114815
2212835
2310846
249847
257858
2668410
2758411
2858213
2948115
3037918

Wind in September

Winds average 6 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 6 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
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:09 AM to 5:49 AM, and sunset from 5:56 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:095:56
211.86:085:56
311.86:085:56
411.86:075:56
511.86:075:56
611.86:065:56
711.86:055:56
811.96:055:56
911.96:045:56
1011.96:035:56
1111.96:025:55
1211.96:025:55
1311.96:015:55
1411.96:005:55
1511.96:005:55
1611.95:595:55
1711.95:585:55
1812.05:585:55
1912.05:575:55
2012.05:565:55
2112.05:555:55
2212.05:555:55
2312.05:545:55
2412.05:535:55
2512.05:535:55
2612.05:525:55
2712.15:515:55
2812.15:515:55
2912.15:505:55
3012.15:495:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.69 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 5.69 kWh/m² in September across the year — September's 5.69 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Ucu Seles

In seasonPeak

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

Ucu Seles's monsoon runs March–April, 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 Ucu Seles?

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

7.9
Sightseeing
4th-best month of the year
7.3
Beach & pool
4th-best month of the year

September is one of the better times to visit Ucu Seles for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ucu Seles in September

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

In September, Ucu Seles sees daytime highs around 26°C and nights near 17°C. Worth packing: light clothes and sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Ucu Seles in September

The nearest coast averages about 21°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 57 km away) is warmest in March at about 28°C and coldest in August near 20°C.

It's comfortable for a long swim from Aug 23 to Aug 9 — about 11.6 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb27Warm
Mar28Warm
Apr27Warm
May25Warm
Jun23Refreshing
Jul21Refreshing
Aug20Cool
Sep21Refreshing
Oct24Refreshing
Nov26Warm
Dec26Warm

UV index in Ucu Seles in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ucu Seles peaks around January 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 13 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 highExtremeJan 19UV 16Aug 13UV 8
UV index (midday)Level
Jan16Extreme
Feb14Extreme
Mar16Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep9Very high
Oct12Extreme
Nov13Extreme
Dec13Extreme

Air quality in Ucu Seles 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 Ucu Seles is worst in July — around 59 µg/m³ PM2.5 (unhealthy), about 6.8× the cleanest month (November, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorPoorModerateGoodJul 2158 µg/m³Nov 239 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr10Good
May18Moderate
Jun39Poor
Jul59Unhealthy
Aug53Poor
Sep41Poor
Oct24Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Ucu Seles?

Ucu Seles sits at 11.4°S, 14.3°E, 1,035 m above sea level, in Angola. The nearest listed city is Conda, 34 km away.

QuisseculaCelaPorto Amboim

Topography around Ucu Seles

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

Within 3 km, the terrain around Ucu Seles has significant variations in elevation — a maximum elevation change of 265 m around an average of 1,047 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,071 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,469 m.

The land around Ucu Seles is covered by cropland (46%) within 3 km, trees (40%) and shrubs (25%) within 16 km, and grassland (30%), trees (28%) and shrubs (21%) within 80 km.

3 km
265 m
16 km
1,071 m
80 km
2,469 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Conda 34 km · Capunda 36 km · Sumbe 55 km · Chindumbo 62 km · Gabela 63 km · Quissecula 86 km · Cela 89 km · Porto Amboim 96 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 Ucu Seles (-11.4124°, 14.3066°, elevation 1,035 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).