Ondangwa weather in September

In September, Ondangwa sees average daytime highs of 33°C and overnight lows near 17°C, with 2 mm of rain across 0.5 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 34°C by the end. The sky is clear or mostly clear about 89% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Ondangwa's 5th-clearest and 2nd-windiest month. For the whole year in context, see Ondangwa's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
17°
5th coldest
Rainfall
2 mm
0.5 wet days
Daylight
11 h 54 min
6:53 AM – 6:47 PM
Cloud cover
13%
5th clearest
Wind
15 km/h
2nd windiest
Solar energy
7 kWh/m²
Travel score
4.7
out of 10

Ondangwa is town in Oshana Region, Namibia.

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 32°C in the first days to 34°C by the end.

A typical September day in Ondangwa reaches about 33°C in the afternoon and slips back to 17°C overnight — a 16°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 36°C. Set against its neighbours, September runs about 4°C warmer than August and about 1°C cooler than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13216
23216
33216
43216
53216
63216
73216
83316
93317
103317
113317
123317
133317
143317
153317
163318
173318
183318
193418
203418
213418
223418
233418
243419
253419
263419
273419
283419
293419
303419

How September really feels in Ondangwa

Once humidity and wind are folded in, September averages 28 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
28
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ondangwa weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 20°11813.4134.3
Feb30° / 20°12013.512.64.5
Mar30° / 20°9313.312.14.9
Apr30° / 18°20411.66.0
May29° / 15°10.211.27.5
Jun27° / 11°0010.99.2
Jul26° / 11°00119.2
Aug30° / 13°0011.47.2
Sep33° / 17°20.511.94.7
Oct34° / 20°132.612.43.6
Nov33° / 21°468.112.83.9
Dec32° / 21°9111.513.14.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 89% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 4%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1973
2973
3973
4973
5973
6973
7973
8964
9964
10964
11964
12964
13955
14955
15955
16955
17955
18955
19955
20955
21964
22964
23964
24964
25964
26964
27964
28964
29964
30964

Chance of precipitation in September

Any precipitation

Ondangwa gets around 2 mm of rain over 0.5 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 (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
192
202
212
222
232
242
252
263
273
283
293
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 99% 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
810000
910000
1010000
1110000
1210000
139910
149910
159910
169910
179910
189910
199910
209820
219820
229820
239820
249820
259730
269730
279631
289631
299631
309541

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 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 30 minutes over September. Sunrise moves from 7:06 AM to 6:41 AM, and sunset from 6:45 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:066:45
211.77:066:45
311.77:056:45
411.77:046:46
511.77:036:46
611.77:026:46
711.77:016:46
811.87:006:46
911.87:006:46
1011.86:596:47
1111.86:586:47
1211.86:576:47
1311.86:566:47
1411.96:556:47
1511.96:546:47
1611.96:536:47
1711.96:536:48
1811.96:526:48
1912.06:516:48
2012.06:506:48
2112.06:496:48
2212.06:486:48
2312.06:476:48
2412.06:466:49
2512.16:456:49
2612.16:456:49
2712.16:446:49
2812.16:436:49
2912.16:426:49
3012.16:416:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 7 kWh/m².

For context, solar energy here swings from a low near 5.12 kWh/m² to a high of 7.72 kWh/m² in November across the year — September's 7 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.7Intense
56.7Intense
66.7Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.9Intense
126.9Intense
136.9Intense
147.0Intense
157.0Intense
167.0Intense
177.0Intense
187.1Intense
197.1Intense
207.1Intense
217.1Intense
227.2Intense
237.2Intense
247.2Intense
257.3Intense
267.3Intense
277.3Intense
287.3Intense
297.4Intense
307.4Intense
Planning a trip in September

Hazard calendar for Ondangwa

In seasonPeak

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

Ondangwa's rainy season runs December–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Ondangwa?

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

4.7
Sightseeing
7th-best month of the year
8.3
Beach & pool
5th-best month of the year

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

What to pack for Ondangwa in September

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

In September, Ondangwa sees daytime highs around 33°C and nights near 17°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Ondangwa in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ondangwa peaks around January 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 17UV 15Jul 10UV 8
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep10Very high
Oct13Extreme
Nov14Extreme
Dec15Extreme

Air quality in Ondangwa 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 Ondangwa is worst in October — around 26 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (April, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1026 µg/m³Apr 1310 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb12Good
Mar10Good
Apr10Good
May11Good
Jun13Moderate
Jul15Moderate
Aug18Moderate
Sep25Moderate
Oct26Moderate
Nov19Moderate
Dec15Moderate
Location & terrain

Where is Ondangwa?

Ondangwa sits at 17.9°S, 16.0°E, 1,081 m above sea level, in Namibia. The nearest listed city is Ongwediva, 27 km away.

OndjivaXangongoHumbeOpuwoTsumeb

Topography around Ondangwa

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

Within 3 km, the terrain around Ondangwa has only modest variations in elevation — a maximum elevation change of 6 m around an average of 1,095 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 15 m; within 80 km, only modest variations in elevation — a maximum elevation change of 60 m.

The land around Ondangwa is covered by grassland (30%), artificial surfaces (26%) and cropland (24%) within 3 km, grassland (49%) and cropland (29%) within 16 km, and grassland (48%) and shrubs (43%) within 80 km.

3 km
6 m
16 km
15 m
80 km
60 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwetland
September weather nearby: Ongwediva 27 km · Oshakati 32 km · Helao Nafidi 58 km · Ondjiva 97 km · Xangongo 168 km · Humbe 178 km · Opuwo 227 km · Tsumeb 236 km

Namibia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / M
220 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$4,876
2025
Happiness
4.8 / 10
World Happiness, 2025
Homicide rate
11.2
per 100k, 2021
Road deaths
34.8
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Christian 98%unaffiliated 2%other 1%

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 Ondangwa (-17.9082°, 15.9804°, elevation 1,081 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).