Assomada weather in September

In September, Assomada sees average daytime highs of 28°C and overnight lows near 25°C, with 74 mm of rain across 9.5 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 1st-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 38% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Assomada's 11th-clearest and 10th-windiest month. For the whole year in context, see Assomada's year-round climate.

Daytime high
28°
1st warmest
Overnight low
25°
12th coldest
Rainfall
74 mm
9.5 wet days
Daylight
12 h 06 min
6:27 AM – 6:32 PM
Cloud cover
53%
11th clearest
Wind
12 km/h
10th windiest
Solar energy
6.02 kWh/m²
Travel score
6.0
out of 10

Assomada is city.

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 28°C through the month.

A typical September day in Assomada reaches about 28°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262925
272925
282925
292925
302925

Assomada weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 20°40.611.28.7
Feb24° / 19°10.411.58.9
Mar25° / 19°10.111.99.1
Apr25° / 20°10.112.39.0
May26° / 20°00.112.79.0
Jun27° / 21°00.112.98.8
Jul27° / 23°102.212.87.9
Aug28° / 24°518.412.56.2
Sep28° / 25°749.512.16.0
Oct28° / 24°273.611.76.8
Nov28° / 23°61.111.37.7
Dec26° / 21°40.611.18.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24852
34951
45050
55149
65248
75248
85446
95446
105545
115545
125743
135743
145743
155842
165842
176040
186040
196139
206139
216139
226139
236337
246337
256436
266436
276634
286634
296733
306832

Chance of precipitation in September

Any precipitation

Assomada gets around 74 mm of rain over 9.5 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
237
337
436
536
635
734
834
933
1033
1132
1231
1331
1431
1530
1630
1730
1829
1929
2029
2129
2229
2328
2428
2527
2626
2725
2824
2922
3021

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
110891
29901
39901
48911
58911
68902
78902
88902
98902
108902
118893
128893
138893
149883
159883
169883
1710873
1810873
1910873
2010873
2111863
2211863
2311863
2411863
2511863
2611863
2711863
2812853
2912853
3013843

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812light breeze
912light breeze
1012light breeze
1112light breeze
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 6:26 AM to 6:28 AM, and sunset from 6:43 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:266:43
212.36:266:43
312.36:266:42
412.36:266:41
512.26:266:40
612.26:266:40
712.26:266:39
812.26:266:38
912.26:266:37
1012.26:266:36
1112.26:266:36
1212.16:266:35
1312.16:266:34
1412.16:266:33
1512.16:266:32
1612.16:276:32
1712.16:276:31
1812.16:276:30
1912.06:276:29
2012.06:276:28
2112.06:276:28
2212.06:276:27
2312.06:276:26
2412.06:276:25
2512.06:276:24
2611.96:276:24
2711.96:276:23
2811.96:276:22
2911.96:286:21
3011.96:286:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.02 kWh/m².

For context, solar energy here swings from a low near 4.9 kWh/m² to a high of 7.31 kWh/m² in May across the year — September's 6.02 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Bright
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.0Intense
156.0Intense
166.0Intense
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Assomada

In seasonPeak

In September, Assomada sits inside its atlantic hurricane and dust season. The full year is below, with each hazard's peak months called out.

Assomada sits in the Atlantic hurricane belt; the season peaks August–October.

Assomada sees seasonal dust haze (April–October), heaviest in June.

Atlantic hurricane
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Assomada?

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

6.0
Sightseeing
12th-best month of the year
7.1
Beach & pool
11th-best month of the year

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

What to pack for Assomada in September

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

In September, Assomada sees daytime highs around 28°C and nights near 25°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

Sea temperature near Assomada in September

The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in October at about 27°C and coldest in March near 23°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Refreshing
Feb23Refreshing
Mar23Refreshing
Apr23Refreshing
May24Refreshing
Jun24Refreshing
Jul25Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov27Warm
Dec25Warm

UV index in Assomada 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 Assomada peaks around May 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeExtremeVery highExtremeVery highHighMay 17UV 12Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar12Extreme
Apr10Very high
May13Extreme
Jun10Very high
Jul10Very high
Aug9Very high
Sep11Extreme
Oct10Very high
Nov8Very high
Dec6High

Air quality in Assomada 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 Assomada is worst in December — around 68 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (May, 14 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyDec 2468 µg/m³May 1114 µg/m³
PM2.5 (µg/m³)Level
Jan67Unhealthy
Feb51Poor
Mar31Moderate
Apr16Moderate
May14Moderate
Jun28Moderate
Jul30Moderate
Aug25Moderate
Sep26Moderate
Oct32Moderate
Nov31Moderate
Dec68Unhealthy
Location & terrain

Where is Assomada?

Assomada sits at 15.1°N, 23.7°W, 391 m above sea level, in Cabo Verde. The nearest listed city is Praia, 26 km away.

PraiaEspargosMindelo

Topography around Assomada

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

Within 3 km, the terrain around Assomada has significant variations in elevation — a maximum elevation change of 501 m around an average of 443 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,310 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,749 m.

The land around Assomada is covered by grassland (55%) and shrubs (29%) within 3 km, grassland (53%) and water (24%) within 16 km, and water (89%) within 80 km.

3 km
501 m
16 km
1,310 m
80 km
2,749 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Praia 26 km · Espargos 200 km · Mindelo 243 km · Dakar 672 km · Le Plateau 673 km · Guédiawaye 676 km · Pikine 677 km · N’diareme limamoulaye 678 km

Cabo Verde travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$5,796
2025
Homicide rate
7
per 100k, 2020
Road deaths
26.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Roman Catholic 73%none 16%Protestant 4%Christian Rationalism 2%

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 Assomada (15.1°, -23.6833°, elevation 391 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).