Choma weather in September

In September, Choma sees average daytime highs of 29°C and overnight lows near 15°C, with 2 mm of rain across 0.4 wet days and about 11.9 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 30°C by the end. The sky is clear or mostly clear about 85% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Choma's 2nd-clearest and 1st-windiest month. For the whole year in context, see Choma's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
15°
6th coldest
Rainfall
2 mm
0.4 wet days
Daylight
11 h 54 min
6:09 AM – 6:04 PM
Cloud cover
15%
2nd clearest
Wind
13 km/h
1st windiest
Solar energy
6.84 kWh/m²
Travel score
7.8
out of 10

Choma is human settlement in Zambia.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 30°C by the end.

A typical September day in Choma reaches about 29°C in the afternoon and slips back to 15°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, September runs about 4°C warmer than August and about 2°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12713
22714
32714
42714
52714
62814
72814
82814
92814
102814
112815
122815
132815
142815
152915
162915
172916
182916
192916
202916
212916
222916
232916
243017
253017
263017
273017
283017
293017
303017

Choma weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°22224.312.94.3
Feb26° / 18°17521.112.64.5
Mar26° / 17°12517.612.15.5
Apr25° / 15°306.811.67.6
May24° / 12°4111.29.1
Jun22° / 10°10.3118.9
Jul22° / 10.411.18.9
Aug25° / 12°0011.49.4
Sep29° / 15°20.411.97.8
Oct30° / 18°153.212.46.0
Nov29° / 19°9613.812.85.0
Dec27° / 18°19922.8134.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 85% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 7%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1964
2964
3964
4964
5964
6964
7955
8955
9955
10955
11955
12946
13937
14937
15937
16937
17937
18937
19937
20928
21928
22919
23919
24919
25919
26919
278911
288911
298911
308911

Chance of precipitation in September

Any precipitation

Choma 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 4% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
61
71
81
91
101
112
122
132
142
152
162
172
182
192
202
212
222
232
242
252
263
273
283
294
304

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
89910
99910
109910
119910
129910
139910
149910
159820
169820
179820
189820
199820
209730
219730
229730
239730
249640
259640
269550
279451
289361
299361
309271

Wind in September

Winds average 13 km/h in September, the windiest month of the year.

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

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light 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
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 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 24 minutes over September. Sunrise moves from 6:22 AM to 5:57 AM, and sunset from 6:02 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:226:02
211.76:216:02
311.76:206:02
411.76:196:02
511.76:186:02
611.76:186:02
711.86:176:03
811.86:166:03
911.86:156:03
1011.86:146:03
1111.86:136:03
1211.86:136:03
1311.96:126:03
1411.96:116:03
1511.96:106:03
1611.96:096:04
1711.96:086:04
1811.96:076:04
1912.06:076:04
2012.06:066:04
2112.06:056:04
2212.06:046:04
2312.06:036:04
2412.06:026:05
2512.16:016:05
2612.16:016:05
2712.16:006:05
2812.15:596:05
2912.15:586:05
3012.15:576:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.84 kWh/m².

For context, solar energy here swings from a low near 4.71 kWh/m² to a high of 7.24 kWh/m² in October across the year — September's 6.84 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.6Intense
66.6Intense
76.6Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.9Intense
186.9Intense
196.9Intense
206.9Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.0Intense
267.1Intense
277.1Intense
287.1Intense
297.1Intense
307.1Intense
Planning a trip in September

Hazard calendar for Choma

In seasonPeak

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

Choma's monsoon runs December–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 Choma?

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

7.8
Sightseeing
5th-best month of the year
9.1
Beach & pool
1st-best month of the year

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

What to pack for Choma in September

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

In September, Choma sees daytime highs around 29°C and nights near 15°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Choma 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 Choma peaks around January 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 19UV 16Jun 23UV 8
UV index (midday)Level
Jan17Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep11Extreme
Oct12Extreme
Nov14Extreme
Dec13Extreme

Air quality in Choma 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 Choma is worst in September — around 24 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1724 µg/m³Dec 227 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr7Good
May8Good
Jun8Good
Jul11Good
Aug18Moderate
Sep24Moderate
Oct19Moderate
Nov10Good
Dec7Good
Location & terrain

Where is Choma?

Choma sits at 16.8°S, 27.0°E, 1,317 m above sea level, in Zambia. The nearest listed city is Kalomo, 59 km away.

SinazongweMonzeNamwalaMazabukaItezhi-TezhiLivingstone

Topography around Choma

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

Within 3 km, the terrain around Choma has only modest variations in elevation — a maximum elevation change of 65 m around an average of 1,304 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 190 m; within 80 km, large variations in elevation — a maximum elevation change of 906 m.

The land around Choma is covered by grassland (40%) and artificial surfaces (37%) within 3 km, grassland (43%) and trees (23%) within 16 km, and grassland (29%), trees (24%) and cropland (23%) within 80 km.

3 km
65 m
16 km
190 m
80 km
906 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Kalomo 59 km · Maamba 64 km · Sinazongwe 71 km · Monze 79 km · Namwala 131 km · Mazabuka 133 km · Itezhi-Tezhi 156 km · Livingstone 166 km

Zambia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / D / G
230 V · 50 Hz
Prices
≈ 30% of US
price level, 2025
GDP per capita
$1,318
2025
Happiness
4.1 / 10
World Happiness, 2025
Homicide rate
5.2
per 100k, 2015
Road deaths
20.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
High
EF EPI 573
Religion
Protestant 75%Roman Catholic 20%other 3%none 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 Choma (-16.8089°, 26.9875°, elevation 1,317 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).