Alto Hama weather in September

In September, Alto Hama sees average daytime highs of 29°C and overnight lows near 14°C, with 29 mm of rain across 5.4 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 29°C through the month. The sky is clear or mostly clear about 49% 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 Alto Hama's 5th-clearest and 5th-windiest month. For the whole year in context, see Alto Hama's year-round climate.

Daytime high
29°
1st warmest
Overnight low
14°
5th coldest
Rainfall
29 mm
5.4 wet days
Daylight
11 h 54 min
5:54 AM – 5:50 PM
Cloud cover
40%
5th clearest
Wind
7 km/h
5th windiest
Solar energy
6.37 kWh/m²
Travel score
6.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Alto Hama reaches about 29°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 27°C and 31°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)
12913
22913
32913
42913
52913
62913
72913
82913
92913
102913
112914
122914
132914
142914
152914
162914
172914
182914
192914
202914
212914
222915
232915
242915
252915
262915
272915
282915
292915
302915

Alto Hama 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°18620.412.65.0
Feb25° / 15°15217.412.45.1
Mar25° / 15°19223.212.14.6
Apr25° / 14°8413.511.76.1
May26° / 12°51.211.48.7
Jun25° / 10°0011.39.4
Jul26° / 10°0011.49.2
Aug28° / 12°10.411.67.8
Sep29° / 14°295.411.96.2
Oct27° / 15°17521.612.34.7
Nov25° / 15°23825.712.64.1
Dec24° / 15°2212412.74.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 30% 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
28614
38515
48515
58515
68515
78416
88416
98317
108317
118218
128218
138119
148119
158119
168020
178020
187921
197921
207822
217723
227723
237525
247525
257327
267327
277129
287129
296931
306832

Chance of precipitation in September

Any precipitation

Alto Hama gets around 29 mm of rain over 5.4 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 18% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
14
25
35
45
56
66
77
87
98
109
1110
1211
1312
1414
1515
1617
1718
1820
1922
2023
2125
2227
2329
2430
2532
2634
2735
2837
2938
3040

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
29640
39640
49550
59460
69460
79370
89280
99280
109190
1190100
1287121
1386131
1484151
1583161
1681181
1779201
1876231
1973252
2070282
2168302
2265323
2362353
2459374
2556395
2652417
2750428
2847449
29444511
30414613

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
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 6:05 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
311.86:035:50
411.86:035:50
511.86:025:50
611.86:015:50
711.86:015:50
811.86:005:50
911.95:595:50
1011.95:585:50
1111.95:585:50
1211.95:575:50
1311.95:565:50
1411.95:565:50
1511.95:555:50
1611.95:545:50
1711.95:535:50
1812.05:535:50
1912.05:525:50
2012.05:515:50
2112.05:515:50
2212.05:505:50
2312.05:495:50
2412.05:485:50
2512.05:485:50
2612.05:475:50
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 6.37 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.58 kWh/m² to a high of 6.37 kWh/m² in September across the year — September's 6.37 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.4Intense
Planning a trip in September

Hazard calendar for Alto Hama

In seasonPeak

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

Alto Hama'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 Alto Hama?

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

6.2
Sightseeing
5th-best month of the year
8.0
Beach & pool
5th-best month of the year

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

What to pack for Alto Hama in September

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

In September, Alto Hama sees daytime highs around 29°C and nights near 14°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Alto Hama 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 Alto Hama peaks around January 18 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 18 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 18UV 9
UV index (midday)Level
Jan17Extreme
Feb15Extreme
Mar16Extreme
Apr13Extreme
May10Extreme
Jun10Very high
Jul9Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Alto Hama 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 Alto Hama is worst in August — around 98 µg/m³ PM2.5 (unhealthy), about 9.5× the cleanest month (January, 10 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateGoodAug 1097 µg/m³Jan 1110 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr15Moderate
May35Poor
Jun74Unhealthy
Jul95Unhealthy
Aug98Unhealthy
Sep43Poor
Oct20Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Alto Hama?

Alto Hama sits at 12.2°S, 15.6°E, 1,509 m above sea level, in Angola. The nearest listed city is Londuimbali, 25 km away.

BalomboMungo

Topography around Alto Hama

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

Within 3 km, the terrain around Alto Hama has only modest variations in elevation — a maximum elevation change of 115 m around an average of 1,491 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,017 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,407 m.

The land around Alto Hama is covered by cropland (41%) and grassland (31%) within 3 km, grassland (35%) and shrubs (28%) within 16 km, and grassland (34%), cropland (25%) and shrubs (24%) within 80 km.

3 km
115 m
16 km
1,017 m
80 km
1,407 m
treesshrubsgrasslandcroplandartificial surfaceswetland
September weather nearby: Londuimbali 25 km · Ecunna 50 km · Huambo 64 km · Caála 69 km · Longonjo 82 km · Catchiungo 82 km · Balombo 86 km · Mungo 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 Alto Hama (-12.2333°, 15.55°, elevation 1,509 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).