Mombaça weather in September

In September, Mombaça sees average daytime highs of 34°C and overnight lows near 22°C, with 3 mm of rain across 0.8 wet days and about 12 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 76% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Mombaça's 1st-clearest and 3rd-windiest month. For the whole year in context, see Mombaça's year-round climate.

Daytime high
34°
4th warmest
Overnight low
22°
5th coldest
Rainfall
3 mm
0.8 wet days
Daylight
12 hours
5:34 AM – 5:32 PM
Cloud cover
26%
1st clearest
Wind
15 km/h
3rd windiest
Solar energy
6.77 kWh/m²
Travel score
4.3
out of 10

Mombaça is settlement in Brazil.

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 34°C through the month.

A typical September day in Mombaça reaches about 34°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 35°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13322
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123322
133322
143322
153322
163422
173422
183422
193422
203422
213422
223422
233422
243422
253422
263422
273422
283422
293422
303422

How September really feels in Mombaça

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.

Mombaça weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°841312.33.6
Feb31° / 23°8815.512.23.6
Mar31° / 22°11918.9123.7
Apr30° / 22°10018.411.93.9
May30° / 22°6511.611.74.9
Jun30° / 21°316.311.75.5
Jul31° / 21°183.311.75.5
Aug32° / 21°81.311.85.0
Sep34° / 22°30.8124.3
Oct34° / 23°130.912.13.7
Nov34° / 23°61.112.33.6
Dec34° / 23°224.412.33.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 8%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18911
29010
39010
49010
59010
69010
79010
8919
9919
10919
11919
12919
13919
14919
15928
16937
17937
18937
19937
20937
21937
22946
23937
24937
25937
26937
27937
28928
29919
30919

Chance of precipitation in September

Any precipitation

Mombaça gets around 3 mm of rain over 0.8 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 3% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
22
32
42
52
62
73
83
93
103
113
123
133
143
153
163
173
183
193
203
213
223
232
242
252
262
272
282
292
302

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11325512
21325512
32325412
42325412
52315512
62315512
72315512
82315512
92305612
102305612
112295712
122285812
131276012
141266112
151256212
161246213
171236313
181216513
191206613
201206514
210196714
220186814
230186814
240176914
250176914
260167014
270167014
280167014
290167014
300157114

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 15 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
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light 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
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

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

Days grow by about 6 minutes over September. Sunrise moves from 5:42 AM to 5:26 AM, and sunset from 5:35 PM to 5:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:425:35
211.95:415:35
311.95:415:35
411.95:405:34
511.95:405:34
611.95:395:34
711.95:395:34
811.95:385:34
911.95:375:33
1011.95:375:33
1111.95:365:33
1211.95:365:33
1312.05:355:33
1412.05:355:32
1512.05:345:32
1612.05:345:32
1712.05:335:32
1812.05:335:31
1912.05:325:31
2012.05:325:31
2112.05:315:31
2212.05:315:31
2312.05:305:30
2412.05:305:30
2512.05:295:30
2612.05:285:30
2712.05:285:30
2812.05:275:30
2912.05:275:29
3012.05:265:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.77 kWh/m².

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 6.95 kWh/m² in October across the year — September's 6.77 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.9Intense
216.9Intense
226.9Intense
236.9Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
Planning a trip in September

Hazard calendar for Mombaça

In seasonPeak

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

Mombaça's rainy season runs January–May, 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 Mombaça?

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

4.3
Sightseeing
5th-best month of the year
7.9
Beach & pool
3rd-best month of the year

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

What to pack for Mombaça in September

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

In September, Mombaça sees daytime highs around 34°C and nights near 22°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Mombaça 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 Mombaça peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 13UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Mombaça?

Mombaça sits at 5.7°S, 39.6°W, 251 m above sea level, in Brazil. The nearest listed city is Piquet Carneiro, 24 km away.

Topography around Mombaça

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

Within 3 km, the terrain around Mombaça has only modest variations in elevation — a maximum elevation change of 75 m around an average of 258 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 497 m; within 80 km, large variations in elevation — a maximum elevation change of 754 m.

The land around Mombaça is covered by shrubs (49%) and grassland (42%) within 3 km, shrubs (66%) and grassland (30%) within 16 km, and shrubs (69%) and grassland (27%) within 80 km.

3 km
75 m
16 km
497 m
80 km
754 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Piquet Carneiro 24 km · Senador Pompeu 33 km · Pedra Branca 34 km · Acopiara 44 km · Solonópole 69 km · Boa Viagem 69 km · Quixeramobim 71 km · Quixelô 74 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Mombaça (-5.7431°, -39.6275°, elevation 251 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).