Bosaso weather in September

In September, Bosaso sees average daytime highs of 35°C and overnight lows near 29°C, with 0 mm of rain across 0 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 36°C in the first days to 33°C by the end. The sky is clear or mostly clear about 81% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Bosaso's 3rd-clearest and 4th-windiest month. For the whole year in context, see Bosaso's year-round climate.

Daytime high
35°
4th warmest
Overnight low
29°
9th coldest
Rainfall
0 mm
0 wet days
Daylight
12 h 06 min
5:36 AM – 5:39 PM
Cloud cover
23%
3rd clearest
Wind
12 km/h
4th windiest
Solar energy
5.9 kWh/m²
Travel score
3.2
out of 10

Bosaso is city in Puntland, Somalia.

Density
6,191/km²
people per km²
Founded
1400

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 36°C in the first days to 33°C by the end.

A typical September day in Bosaso reaches about 35°C in the afternoon and slips back to 29°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 34°C and 37°C. Set against its neighbours, September runs about 1°C cooler than August and about 4°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13630
23630
33630
43630
53630
63630
73630
83630
93630
103630
113630
123629
133629
143629
153629
163529
173529
183529
193529
203528
213528
223528
233428
243428
253427
263427
273427
283327
293327
303326

How September really feels in Bosaso

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.

Bosaso weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 20°10.311.48.8
Feb27° / 21°20.211.68.6
Mar30° / 23°20.511.96.8
Apr32° / 25°71.512.25.1
May34° / 28°71.812.53.9
Jun36° / 30°20.112.62.4
Jul37° / 30°0012.62.2
Aug36° / 30°0012.42.4
Sep35° / 29°0012.13.2
Oct31° / 24°81.811.76.0
Nov28° / 22°132.211.57.8
Dec27° / 21°101.411.48.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 81% 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 11%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18911
28911
38911
48911
58911
68911
78911
88911
98911
108911
118911
128911
138911
148911
158911
168911
178911
188911
198911
208911
218911
228911
238911
248911
258911
268911
278911
288911
298911
308911

Chance of precipitation in September

Any precipitation

Bosaso gets around 0 mm of rain over 0 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 0% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
231
241
251
261
272
282
292
303

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 65% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1465301
2463321
3460351
4458371
5455392
6353422
7350443
8347463
9245494
10242515
11239536
12236557
13134578
14131599
151296010
161276111
171256113
181236115
191226116
201216018
211196020
221185922
231185823
241175725
251165627
261165528
271155430
281145431
291145233
301135234

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 9 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
115light breeze
215light breeze
315light breeze
415light breeze
514light breeze
614light breeze
714light breeze
814light breeze
913light breeze
1013light breeze
1113light breeze
1212light breeze
1312light breeze
1412calm
1512calm
1611calm
1711calm
1811calm
1911calm
2010calm
2110calm
2210calm
2310calm
2410calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 5:36 AM to 5:35 AM, and sunset from 5:50 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:365:50
212.25:365:49
312.25:365:48
412.25:365:48
512.25:365:47
612.25:365:46
712.25:365:46
812.15:365:45
912.15:365:44
1012.15:365:44
1112.15:365:43
1212.15:365:42
1312.15:365:42
1412.15:365:41
1512.15:365:40
1612.15:365:39
1712.15:365:39
1812.05:365:38
1912.05:365:37
2012.05:365:37
2112.05:365:36
2212.05:355:35
2312.05:355:35
2412.05:355:34
2512.05:355:33
2612.05:355:33
2711.95:355:32
2811.95:355:31
2911.95:355:31
3011.95:355:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.9 kWh/m².

For context, solar energy here swings from a low near 5.15 kWh/m² to a high of 7.12 kWh/m² in April across the year — September's 5.9 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
216.0Bright
226.0Bright
236.0Intense
246.0Intense
256.0Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.2Intense
Planning a trip in September

Hazard calendar for Bosaso

In seasonPeak

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

Bosaso sees seasonal dust haze (June–August), heaviest in July.

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

Is September a good time to visit Bosaso?

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

3.2
Sightseeing
9th-best month of the year
7.0
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Bosaso. The water and warmth also suit a beach or pool day.

What to pack for Bosaso in September

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

In September, Bosaso sees daytime highs around 35°C and nights near 29°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Bosaso in September

The nearest coast averages about 31°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in June at about 31°C and coldest in January near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb26Warm
Mar27Warm
Apr28Tropical
May30Tropical
Jun31Tropical
Jul30Tropical
Aug30Tropical
Sep31Tropical
Oct29Tropical
Nov27Warm
Dec26Warm

UV index in Bosaso in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bosaso peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highApr 12UV 14Dec 13UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Very high
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Bosaso 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 Bosaso is worst in July — around 41 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (April, 13 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1540 µg/m³Apr 1713 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb21Moderate
Mar18Moderate
Apr13Moderate
May17Moderate
Jun33Moderate
Jul41Poor
Aug30Moderate
Sep18Moderate
Oct13Moderate
Nov16Moderate
Dec18Moderate
Location & terrain

Where is Bosaso?

Bosaso sits at 11.3°N, 49.2°E, 12 m above sea level, in Somalia. The nearest listed city is Qandala, 78 km away.

CeerigaaboEl DibirGarooweLaascaanoodEyl

Topography around Bosaso

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

Within 3 km, the terrain around Bosaso has only modest variations in elevation — a maximum elevation change of 43 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 514 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,101 m.

The land around Bosaso is covered by water (39%), bare terrain (36%) and artificial surfaces (22%) within 3 km, bare terrain (52%) and water (46%) within 16 km, and bare terrain (50%) and water (32%) within 80 km.

3 km
43 m
16 km
514 m
80 km
2,101 m
treesshrubsgrasslandartificial surfacesbare terrainwater
September weather nearby: Qandala 78 km · Ceerigaabo 211 km · El Dibir 228 km · Garoowe 329 km · Mukalla 362 km · Laascaanood 370 km · Eyl 374 km · Ghayl Bā Wazīr 389 km

Somalia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / G
220 V · 50 Hz
Prices
≈ 52% of US
price level, 2025
GDP per capita
$661
2025
Happiness
4.5 / 10
World Happiness, 2025
Road deaths
27.4
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 399
Religion
Muslim 100%ethnic religionist 0%

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 Bosaso (11.2842°, 49.1816°, elevation 12 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).