Swakopmund weather in September

In September, Swakopmund sees average daytime highs of 20°C and overnight lows near 11°C, with 1 mm of rain across 0.2 wet days and about 11.9 hours of daylight. It is the 12th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 76% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Swakopmund's 6th-clearest and 6th-windiest month. For the whole year in context, see Swakopmund's year-round climate.

Daytime high
20°
12th warmest
Overnight low
11°
2nd coldest
Rainfall
1 mm
0.2 wet days
Daylight
11 h 54 min
7:00 AM – 6:52 PM
Cloud cover
24%
6th clearest
Wind
14 km/h
6th windiest
Solar energy
6.21 kWh/m²
Travel score
8.3
out of 10

Swakopmund is city in Namibia.

Founded
1892

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical September day in Swakopmund reaches about 20°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, September runs on par with August and on par with October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11911
21911
31911
41911
51911
61911
71911
81911
91911
101911
112011
122011
132011
142011
152011
162011
172011
182011
192011
202011
212012
222012
232012
242012
252012
262012
272012
282012
292012
302012

Swakopmund weather by month

How September compares with the rest of the year at a glance. September is the 12th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 17°4113.28.6
Feb24° / 17°61.112.88.7
Mar24° / 17°40.712.29.1
Apr24° / 15°40.611.59.3
May23° / 14°10.210.99.4
Jun23° / 13°00.110.69.4
Jul22° / 13°00.110.79.3
Aug20° / 11°00.111.28.6
Sep20° / 11°10.211.98.3
Oct20° / 12°0012.58.4
Nov21° / 14°10.213.18.6
Dec22° / 15°20.513.48.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 8%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1937
2937
3937
4937
5937
6937
7937
8937
9937
10937
11928
12919
13919
14919
15919
16919
17919
18919
19928
20928
21928
22928
23928
24937
25937
26937
27937
28946
29946
30946

Chance of precipitation in September

Any precipitation

Swakopmund gets around 1 mm of rain over 0.2 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 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
300

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 (%)
11000
21000
3991
4991
5991
6991
7991
8991
9991
10982
11982
12982
13982
14982
15982
16982
17982
18982
19982
20973
21973
22973
23973
24973
25973
26973
27964
28964
29964
30964

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 14 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
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 7:15 AM to 6:46 AM, and sunset from 6:48 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:156:48
211.67:146:48
311.67:136:48
411.67:126:49
511.67:116:49
611.67:106:49
711.77:096:50
811.77:086:50
911.77:076:50
1011.77:066:51
1111.87:056:51
1211.87:046:51
1311.87:036:51
1411.87:026:52
1511.87:016:52
1611.97:006:52
1711.96:596:53
1811.96:586:53
1911.96:576:53
2012.06:566:54
2112.06:556:54
2212.06:546:54
2312.06:536:54
2412.16:526:55
2512.16:516:55
2612.16:506:55
2712.16:496:56
2812.16:486:56
2912.26:476:56
3012.26:466:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.21 kWh/m².

For context, solar energy here swings from a low near 4.31 kWh/m² to a high of 7.9 kWh/m² in December across the year — September's 6.21 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.9Bright
85.9Bright
95.9Bright
106.0Bright
116.0Intense
126.0Intense
136.1Intense
146.1Intense
156.2Intense
166.2Intense
176.2Intense
186.3Intense
196.3Intense
206.4Intense
216.4Intense
226.5Intense
236.5Intense
246.5Intense
256.6Intense
266.6Intense
276.7Intense
286.7Intense
296.7Intense
306.8Intense
Planning a trip in September

Is September a good time to visit Swakopmund?

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

8.3
Sightseeing
12th-best month of the year
4.0
Beach & pool
12th-best month of the year

September is one of the better times to visit Swakopmund for general sightseeing.

What to pack for Swakopmund in September

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

In September, Swakopmund sees daytime highs around 20°C and nights near 11°C. Pack sun protection.

sun protection

Sea temperature near Swakopmund in September

The nearest coast averages about 13°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in February at about 18°C and coldest in September near 13°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar18Cool
Apr17Cool
May15Cool
Jun14Bracing
Jul14Bracing
Aug14Bracing
Sep13Bracing
Oct14Bracing
Nov15Cool
Dec17Cool

UV index in Swakopmund in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Swakopmund peaks around January 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 15UV 14Jun 18UV 6
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar13Extreme
Apr9Very high
May7High
Jun5High
Jul6High
Aug7Very high
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Swakopmund 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 Swakopmund is worst in July — around 39 µg/m³ PM2.5 (poor), about 7.6× the cleanest month (January, 5 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodJul 1138 µg/m³Jan 15 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb6Good
Mar6Good
Apr11Good
May27Moderate
Jun36Poor
Jul39Poor
Aug26Moderate
Sep10Good
Oct7Good
Nov6Good
Dec5Good
Location & terrain

Where is Swakopmund?

Swakopmund sits at 22.7°S, 14.5°E, 18 m above sea level, in Namibia. The nearest listed city is Walvis Bay, 31 km away.

OkahandjaKatuturaWindhoekRehobothOtjiwarongoMarientalLüderitz

Topography around Swakopmund

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

Within 3 km, the terrain around Swakopmund has only modest variations in elevation — a maximum elevation change of 38 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 189 m; within 80 km, large variations in elevation — a maximum elevation change of 1,011 m.

The land around Swakopmund is covered by water (44%), bare terrain (33%) and artificial surfaces (21%) within 3 km, water (49%) and bare terrain (48%) within 16 km, and bare terrain (67%) and water (30%) within 80 km.

3 km
38 m
16 km
189 m
80 km
1,011 m
shrubsgrasslandartificial surfacesbare terrainwater
September weather nearby: Walvis Bay 31 km · Okahandja 256 km · Katutura 261 km · Windhoek 263 km · Rehoboth 272 km · Otjiwarongo 330 km · Mariental 412 km · Lüderitz 446 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 Swakopmund (-22.6784°, 14.5266°, elevation 18 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).