Helao Nafidi weather in September

In September, Helao Nafidi sees average daytime highs of 34°C and overnight lows near 17°C, with 2 mm of rain across 0.4 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 35°C by the end. The sky is clear or mostly clear about 87% 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 Helao Nafidi's 5th-clearest and 2nd-windiest month. For the whole year in context, see Helao Nafidi's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
17°
5th coldest
Rainfall
2 mm
0.4 wet days
Daylight
11 h 54 min
6:54 AM – 6:48 PM
Cloud cover
14%
5th clearest
Wind
12 km/h
2nd windiest
Solar energy
6.96 kWh/m²
Travel score
4.3
out of 10

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 35°C by the end.

A typical September day in Helao Nafidi reaches about 34°C in the afternoon and slips back to 17°C overnight — a 17°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 36°C. Set against its neighbours, September runs about 3°C warmer than August and about 1°C cooler than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13215
23215
33315
43316
53316
63316
73316
83316
93316
103316
113316
123317
133417
143417
153417
163417
173417
183417
193417
203418
213418
223418
233418
243418
253418
263518
273518
283518
293518
303519

How September really feels in Helao Nafidi

Once humidity and wind are folded in, September averages 30 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
30
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.

Helao Nafidi 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
Jan30° / 20°13514.212.94.3
Feb30° / 19°13314.412.64.4
Mar29° / 19°10814.612.14.7
Apr30° / 17°244.611.66.0
May29° / 14°10.311.27.4
Jun27° / 11°00119.1
Jul27° / 11°0011.19.1
Aug30° / 13°0011.46.8
Sep34° / 17°20.411.94.3
Oct35° / 20°173.412.43.2
Nov33° / 20°569.812.83.6
Dec32° / 20°10912.6133.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 87% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% 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
8973
9973
10973
11964
12964
13964
14964
15964
16964
17964
18964
19964
20964
21964
22964
23964
24955
25955
26955
27955
28955
29955
30955

Chance of precipitation in September

Any precipitation

Helao Nafidi 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
41
51
61
71
81
91
101
111
121
131
141
151
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 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
109910
119910
129910
139910
149910
159910
169910
179820
189820
199820
209820
219820
229820
239820
249820
259820
269730
279631
289631
299631
309631

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 12 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
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 7:06 AM to 6:42 AM, and sunset from 6:46 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:066:46
211.77:066:46
311.77:056:46
411.77:046:46
511.77:036:46
611.77:026:47
711.87:016:47
811.87:016:47
911.87:006:47
1011.86:596:47
1111.86:586:47
1211.86:576:47
1311.96:566:47
1411.96:556:48
1511.96:556:48
1611.96:546:48
1711.96:536:48
1811.96:526:48
1912.06:516:48
2012.06:506:48
2112.06:496:49
2212.06:486:49
2312.06:486:49
2412.06:476:49
2512.16:466:49
2612.16:456:49
2712.16:446:49
2812.16:436:50
2912.16:426:50
3012.16:426:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.96 kWh/m².

For context, solar energy here swings from a low near 5.15 kWh/m² to a high of 7.49 kWh/m² in October across the year — September's 6.96 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.6Intense
36.6Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.9Intense
136.9Intense
146.9Intense
157.0Intense
167.0Intense
177.0Intense
187.0Intense
197.0Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.2Intense
257.2Intense
267.2Intense
277.2Intense
287.3Intense
297.3Intense
307.3Intense
Planning a trip in September

Hazard calendar for Helao Nafidi

In seasonPeak

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

Helao Nafidi'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 Helao Nafidi?

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

4.3
Sightseeing
8th-best month of the year
8.0
Beach & pool
6th-best month of the year

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

What to pack for Helao Nafidi in September

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

In September, Helao Nafidi sees daytime highs around 34°C and nights near 17°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Helao Nafidi 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 Helao Nafidi peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 18UV 15Jul 12UV 8
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep10Very high
Oct13Extreme
Nov13Extreme
Dec14Extreme

Air quality in Helao Nafidi 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 Helao Nafidi is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (April, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1821 µg/m³Apr 196 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb8Good
Mar8Good
Apr6Good
May7Good
Jun7Good
Jul9Good
Aug15Moderate
Sep22Moderate
Oct18Moderate
Nov11Good
Dec8Good
Location & terrain

Where is Helao Nafidi?

Helao Nafidi sits at 17.4°S, 15.9°E, 1,098 m above sea level, in Namibia. The nearest listed city is Ondjiva, 40 km away.

XangongoHumbeCahamaOpuwo

Topography around Helao Nafidi

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

Within 3 km, the terrain around Helao Nafidi has only modest variations in elevation — a maximum elevation change of 11 m around an average of 1,105 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 76 m.

The land around Helao Nafidi is covered by grassland (38%) and shrubs (32%) within 3 km, shrubs (52%) and grassland (36%) within 16 km, and shrubs (51%) and grassland (34%) within 80 km.

3 km
11 m
16 km
15 m
80 km
76 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Ondjiva 40 km · Ongwediva 44 km · Oshakati 48 km · Ondangwa 58 km · Xangongo 121 km · Humbe 131 km · Cahama 209 km · Opuwo 230 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 Helao Nafidi (-17.3932°, 15.8911°, elevation 1,098 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).