Porto Amboim weather in September

In September, Porto Amboim sees average daytime highs of 22°C and overnight lows near 21°C, with 2 mm of rain across 0.4 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 70% of the time in September, and the air most often feels muggy.

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 Porto Amboim's 4th-clearest and 6th-windiest month. For the whole year in context, see Porto Amboim's year-round climate.

Daytime high
22°
10th warmest
Overnight low
21°
3rd coldest
Rainfall
2 mm
0.4 wet days
Daylight
11 h 54 min
6:01 AM – 5:57 PM
Cloud cover
32%
4th clearest
Wind
13 km/h
6th windiest
Solar energy
5.52 kWh/m²
Travel score
8.7
out of 10

Porto Amboim is city in Angola.

Density
25/km²
people per km²

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 22°C through the month.

A typical September day in Porto Amboim reaches about 22°C in the afternoon and slips back to 21°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 23°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

15°18°20°23°25°151015202530
Avg high (°C)Avg low (°C)
12220
22220
32220
42220
52220
62220
72220
82220
92220
102220
112220
122220
132220
142221
152221
162221
172221
182221
192221
202221
212321
222321
232321
242321
252321
262321
272321
282321
292321
302322

Porto Amboim weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 25°274.612.67.2
Feb27° / 26°355.512.46.7
Mar28° / 26°10710.812.15.9
Apr28° / 26°617.511.86.6
May26° / 24°20.211.58.6
Jun24° / 22°0011.49.1
Jul22° / 20°0011.48.7
Aug21° / 20°00.111.68.6
Sep22° / 21°20.411.98.7
Oct24° / 23°102.512.28.2
Nov26° / 25°24512.57.3
Dec26° / 25°304.512.67.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28515
38515
48515
58614
68614
78614
88614
98713
108713
118713
128713
138713
148713
158713
168713
178713
188713
198713
208614
218515
228515
238614
248515
258515
268515
278515
288416
298416
308416

Chance of precipitation in September

Any precipitation

Porto Amboim gets around 2 mm of rain over 0.4 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 2% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
61
71
81
91
101
111
121
132
142
152
162
172
182
192
202
212
222
232
242
252
262
272
283
293
303

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 84% of days. Sticky, muggy-or-worse air turns up on roughly 85% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
135650
233670
331690
429710
528720
626740
725750
823770
922780
1021790
1119810
1218820
1317830
1416840
1515850
1614860
1713870
1811890
1910900
209910
218920
227921
236931
245941
254942
264942
273943
283934
292935
302926

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

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 6:11 AM to 5:52 AM, and sunset from 5:58 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:115:58
211.86:105:58
311.86:105:58
411.86:095:58
511.86:085:58
611.86:085:58
711.96:075:58
811.96:065:58
911.96:065:58
1011.96:055:58
1111.96:045:58
1211.96:045:58
1311.96:035:58
1411.96:025:58
1511.96:025:58
1611.96:015:57
1712.06:005:57
1812.06:005:57
1912.05:595:57
2012.05:585:57
2112.05:585:57
2212.05:575:57
2312.05:565:57
2412.05:565:57
2512.05:555:57
2612.05:545:57
2712.15:545:57
2812.15:535:57
2912.15:525:57
3012.15:525:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.52 kWh/m².

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 5.93 kWh/m² in January across the year — September's 5.52 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Porto Amboim?

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

8.7
Sightseeing
2nd-best month of the year
6.2
Beach & pool
10th-best month of the year

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

What to pack for Porto Amboim in September

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

In September, Porto Amboim sees daytime highs around 22°C and nights near 21°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Porto Amboim 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 20 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 Porto Amboim in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Porto Amboim peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 12 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeMar 14UV 15Aug 12UV 7
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr12Extreme
May9Very high
Jun7Very high
Jul7High
Aug7High
Sep8Very high
Oct11Extreme
Nov12Extreme
Dec13Extreme

Air quality in Porto Amboim 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 Porto Amboim is worst in July — around 27 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (February, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1927 µg/m³Feb 179 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb9Good
Mar10Good
Apr10Good
May14Moderate
Jun20Moderate
Jul27Moderate
Aug23Moderate
Sep19Moderate
Oct14Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Porto Amboim?

Porto Amboim sits at 10.7°S, 13.8°E, 36 m above sea level, in Angola. The nearest listed city is Sumbe, 53 km away.

CapundaUcu SelesQuibalaDondoCalulo

Topography around Porto Amboim

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

Within 3 km, the terrain around Porto Amboim has only modest variations in elevation — a maximum elevation change of 97 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 144 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,798 m.

The land around Porto Amboim is covered by grassland (45%), artificial surfaces (25%) and water (24%) within 3 km, water (46%) and grassland (45%) within 16 km, and grassland (35%), water (32%) and trees (26%) within 80 km.

3 km
97 m
16 km
144 m
80 km
1,798 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Sumbe 53 km · Gabela 68 km · Conda 75 km · Capunda 88 km · Ucu Seles 96 km · Quibala 132 km · Dondo 137 km · Calulo 148 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 Porto Amboim (-10.7325°, 13.7684°, elevation 36 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).