Ecunna weather in September

In September, Ecunna sees average daytime highs of 28°C and overnight lows near 14°C, with 30 mm of rain across 5.1 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 44% 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 Ecunna's 5th-clearest and 4th-windiest month. For the whole year in context, see Ecunna's year-round climate.

Daytime high
28°
1st warmest
Overnight low
14°
6th coldest
Rainfall
30 mm
5.1 wet days
Daylight
11 h 54 min
5:54 AM – 5:50 PM
Cloud cover
42%
5th clearest
Wind
7 km/h
4th windiest
Solar energy
6.46 kWh/m²
Travel score
7.0
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 Ecunna reaches about 28°C in the afternoon and slips back to 14°C overnight — a 14°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
132814
142814
152814
162814
172814
182814
192814
202814
212814
222814
232814
242814
252814
262814
272815
282815
292815
302815

Ecunna 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
Jan23° / 14°24921.312.74.8
Feb24° / 14°21518.912.45.0
Mar24° / 15°25224.812.14.4
Apr24° / 14°9514.211.76.1
May24° / 12°71.411.48.9
Jun24° / 10°0011.39.7
Jul25° / 10°0011.39.5
Aug27° / 12°20.411.68.6
Sep28° / 14°305.111.97.0
Oct26° / 15°19020.512.35.1
Nov24° / 15°28425.712.64.2
Dec23° / 15°27924.312.74.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 33% of September, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38416
48416
58416
68416
78317
88317
98218
108218
118218
128020
138020
147921
157921
167822
177723
187723
197624
207426
217426
227327
237327
247129
257129
266931
276931
286733
296634
306436

Chance of precipitation in September

Any precipitation

Ecunna gets around 30 mm of rain over 5.1 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 (%)
15
25
35
46
56
66
77
87
98
109
1110
1211
1311
1413
1514
1615
1716
1818
1919
2021
2123
2224
2326
2427
2529
2631
2732
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 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
110000
29910
39910
49910
59910
69910
79820
89820
99730
109730
119640
129550
139460
149370
159280
169190
1789110
1888120
1986140
2085150
2183170
2281190
2380200
2478220
2576240
2673261
2772271
2869292
2967312
3065323

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:05 AM to 5:44 AM, and sunset from 5:50 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:055:50
211.86:045:50
311.86:045:50
411.86:035:50
511.86:025:50
611.86:025:50
711.86:015:50
811.86:005:50
911.85:595:50
1011.95:595:50
1111.95:585:50
1211.95:575:50
1311.95:575:50
1411.95:565:50
1511.95:555:50
1611.95:545:50
1711.95:545:50
1812.05:535:50
1912.05:525:50
2012.05:515:50
2112.05:515:50
2212.05:505:50
2312.05:495:50
2412.05:495:50
2512.05:485:50
2612.15:475:50
2712.15:465:50
2812.15:465:50
2912.15:455:50
3012.15:445:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.46 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.45 kWh/m² to a high of 6.46 kWh/m² in September across the year — September's 6.46 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Ecunna

In seasonPeak

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

Ecunna'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 Ecunna?

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

7.0
Sightseeing
5th-best month of the year
7.8
Beach & pool
4th-best month of the year

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

What to pack for Ecunna in September

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

In September, Ecunna sees daytime highs around 28°C and nights near 14°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Ecunna 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 Ecunna peaks around January 18 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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 15UV 9
UV index (midday)Level
Jan17Extreme
Feb15Extreme
Mar16Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug10Very high
Sep11Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Ecunna 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 Ecunna is worst in July — around 88 µg/m³ PM2.5 (unhealthy), about 8.7× the cleanest month (January, 10 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateGoodJul 2387 µg/m³Jan 1110 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr14Moderate
May26Moderate
Jun60Unhealthy
Jul88Unhealthy
Aug85Unhealthy
Sep44Poor
Oct21Moderate
Nov12Moderate
Dec10Good
Location & terrain

Where is Ecunna?

Ecunna sits at 12.7°S, 15.5°E, 1,742 m above sea level, in Angola. The nearest listed city is Caála, 20 km away.

Balombo

Topography around Ecunna

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

Within 3 km, the terrain around Ecunna has significant variations in elevation — a maximum elevation change of 292 m around an average of 1,739 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,018 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,389 m.

The land around Ecunna is covered by cropland (52%) and grassland (34%) within 3 km, grassland (39%), cropland (34%) and shrubs (21%) within 16 km, and grassland (33%), cropland (29%) and shrubs (23%) within 80 km.

3 km
292 m
16 km
1,018 m
80 km
1,389 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Caála 20 km · Huambo 28 km · Longonjo 38 km · Alto Hama 50 km · Londuimbali 53 km · Ucuma 58 km · Catchiungo 79 km · Balombo 87 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 Ecunna (-12.6789°, 15.5056°, elevation 1,742 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).