Londuimbali weather in September

In September, Londuimbali sees average daytime highs of 28°C and overnight lows near 14°C, with 30 mm of rain across 5.6 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 28°C through the month. The sky is clear or mostly clear about 50% 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 Londuimbali's 5th-clearest and 5th-windiest month. For the whole year in context, see Londuimbali's year-round climate.

Daytime high
28°
1st warmest
Overnight low
14°
5th coldest
Rainfall
30 mm
5.6 wet days
Daylight
11 h 54 min
5:55 AM – 5:51 PM
Cloud cover
41%
5th clearest
Wind
7 km/h
5th windiest
Solar energy
6.27 kWh/m²
Travel score
6.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Londuimbali reaches about 28°C in the afternoon and slips back to 14°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°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)
12813
22813
32813
42813
52813
62813
72813
82813
92813
102813
112813
122813
132813
142813
152814
162814
172814
182814
192814
202814
212814
222814
232814
242814
252814
262814
272814
282815
292815
302815

Londuimbali 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°20520.712.65.0
Feb24° / 15°18116.912.45.3
Mar24° / 15°21623.512.14.7
Apr24° / 14°8213.311.76.3
May25° / 12°4111.48.9
Jun25° / 10°0011.39.6
Jul25° / 10°0011.49.4
Aug27° / 12°20.311.68.5
Sep28° / 14°305.611.96.9
Oct26° / 15°17521.712.34.9
Nov24° / 15°25525.712.64.2
Dec23° / 15°24523.712.74.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% 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 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28713
38713
48713
58614
68614
78614
88515
98515
108416
118416
128317
138218
148218
158119
168020
177921
187921
197822
207624
217624
227525
237327
247327
257228
267129
277030
286832
296832
306634

Chance of precipitation in September

Any precipitation

Londuimbali gets around 30 mm of rain over 5.6 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 19% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
14
24
35
46
56
67
78
88
99
1010
1112
1213
1314
1415
1516
1618
1719
1821
1922
2024
2126
2227
2329
2431
2532
2634
2736
2837
2939
3041

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19640
29550
39550
49460
59460
69370
79280
89280
99190
1090100
1189110
1288120
1386140
1485150
1583170
1681190
1778220
1875241
1972271
2069301
2167321
2264351
2361381
2458402
2554433
2652453
2749474
2846495
2943516
3040528

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
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 6:06 AM to 5:45 AM, and sunset from 5:51 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:065:51
211.86:055:51
311.86:045:51
411.86:045:51
511.86:035:51
611.86:025:51
711.86:015:51
811.86:015:51
911.96:005:51
1011.95:595:51
1111.95:595:51
1211.95:585:51
1311.95:575:51
1411.95:575:51
1511.95:565:51
1611.95:555:51
1711.95:545:51
1812.05:545:51
1912.05:535:51
2012.05:525:51
2112.05:515:51
2212.05:515:51
2312.05:505:51
2412.05:495:51
2512.05:495:51
2612.05:485:51
2712.15:475:51
2812.15:475:51
2912.15:465:51
3012.15:455:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.27 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.52 kWh/m² to a high of 6.27 kWh/m² in September across the year — September's 6.27 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Londuimbali

In seasonPeak

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

Londuimbali'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 Londuimbali?

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

6.9
Sightseeing
5th-best month of the year
7.8
Beach & pool
5th-best month of the year

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

What to pack for Londuimbali in September

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

In September, Londuimbali sees daytime highs around 28°C and nights near 14°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Londuimbali 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 Londuimbali peaks around January 18 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 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 17Aug 11UV 9
UV index (midday)Level
Jan17Extreme
Feb15Extreme
Mar16Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Londuimbali 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 Londuimbali is worst in August — around 114 µg/m³ PM2.5 (unhealthy), about 12.5× the cleanest month (December, 9 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateGoodAug 10113 µg/m³Dec 239 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar11Good
Apr12Moderate
May31Moderate
Jun72Unhealthy
Jul109Unhealthy
Aug114Unhealthy
Sep51Poor
Oct21Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Londuimbali?

Londuimbali sits at 12.2°S, 15.3°E, 1,567 m above sea level, in Angola. The nearest listed city is Alto Hama, 25 km away.

UcumaCela

Topography around Londuimbali

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

Within 3 km, the terrain around Londuimbali has significant variations in elevation — a maximum elevation change of 286 m around an average of 1,558 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 830 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,752 m.

The land around Londuimbali is covered by cropland (47%) and grassland (30%) within 3 km, grassland (32%), cropland (25%) and trees (23%) within 16 km, and grassland (31%), cropland (25%) and shrubs (23%) within 80 km.

3 km
286 m
16 km
830 m
80 km
1,752 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Alto Hama 25 km · Ecunna 53 km · Balombo 61 km · Caála 73 km · Longonjo 75 km · Huambo 75 km · Ucuma 85 km · Cela 93 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 Londuimbali (-12.2371°, 15.317°, elevation 1,567 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).