Garoua Boulaï weather in September

In September, Garoua Boulaï sees average daytime highs of 27°C and overnight lows near 19°C, with 249 mm of rain across 27.8 wet days and about 12 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels muggy.

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

Daytime high: 27°; 10th warmest
Overnight low: 19°; 4th coldest
Rainfall: 249 mm; 27.8 wet days
Daylight: 12 hours; 5:55 AM – 5:57 PM
Cloud cover: 82%; 11th clearest
Wind: 5 km/h; 11th windiest
Solar energy: 4.81 kWh/m²
Travel score: 3.6; out of 10

Garoua Boulaï is commune of Cameroon.

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

← August Garoua Boulaï year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Garoua Boulaï reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	26	26	26	26	26	26	26	26	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27
Avg low (°C)	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19

	Avg high (°C)	Avg low (°C)
1	26	19
2	26	19
3	26	19
4	26	19
5	26	19
6	26	19
7	26	19
8	26	19
9	27	19
10	27	19
11	27	19
12	27	19
13	27	19
14	27	19
15	27	19
16	27	19
17	27	19
18	27	19
19	27	19
20	27	19
21	27	19
22	27	19
23	27	19
24	27	19
25	27	19
26	27	19
27	27	19
28	27	19
29	27	19
30	27	19

How September really feels in Garoua Boulaï

Once humidity and wind are folded in, September averages 0 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Garoua Boulaï weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	32° / 18°	2	0.5	11.7	4.9
Feb	33° / 19°	7	1.9	11.8	4.1
Mar	32° / 21°	62	11.2	12	3.8
Apr	30° / 20°	178	22.7	12.1	3.5
May	28° / 20°	195	25.2	12.3	3.8
Jun	27° / 19°	181	26.5	12.3	3.9
Jul	26° / 19°	201	26.8	12.3	4.0
Aug	26° / 19°	223	27.8	12.2	3.8
Sep	27° / 19°	249	27.8	12	3.6
Oct	28° / 19°	216	26.3	11.9	3.8
Nov	30° / 18°	40	7.8	11.7	5.2
Dec	31° / 17°	3	0.6	11.7	5.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 90%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	5	5	6	6	6	6	7	8	8	8	8	9	9	10	10	11	11	11	11	11	12	12	12	12	13	14	14	14	14	15
Cloudier (%)	95	95	94	94	94	94	93	92	92	92	92	91	91	90	90	89	89	89	89	89	88	88	88	88	87	86	86	86	86	85

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	6	94
4	6	94
5	6	94
6	6	94
7	7	93
8	8	92
9	8	92
10	8	92
11	8	92
12	9	91
13	9	91
14	10	90
15	10	90
16	11	89
17	11	89
18	11	89
19	11	89
20	11	89
21	12	88
22	12	88
23	12	88
24	12	88
25	13	87
26	14	86
27	14	86
28	14	86
29	14	86
30	15	85

Chance of precipitation in September

Any precipitation

Garoua Boulaï gets around 249 mm of rain over 27.8 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 93% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	92	92	92	92	92	92	92	92	92	92	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93

	Rain chance (%)
1	92
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	93
12	93
13	93
14	93
15	93
16	93
17	93
18	93
19	93
20	93
21	93
22	93
23	93
24	93
25	93
26	93
27	93
28	93
29	93
30	93

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 93% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Humid (%)	9	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	6	6
Muggy (%)	91	92	92	92	92	92	92	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	93	94	94

	Humid (%)	Muggy (%)
1	9	91
2	8	92
3	8	92
4	8	92
5	8	92
6	8	92
7	8	92
8	7	93
9	7	93
10	7	93
11	7	93
12	7	93
13	7	93
14	7	93
15	7	93
16	7	93
17	7	93
18	7	93
19	7	93
20	7	93
21	7	93
22	7	93
23	7	93
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	6	94
30	6	94

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	6	6	6	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	6	calm
2	6	calm
3	6	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 5:58 AM to 5:52 AM, and sunset from 6:05 PM to 5:50 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	5:58	5:58	5:58	5:58	5:57	5:57	5:57	5:57	5:57	5:56	5:56	5:56	5:56	5:56	5:55	5:55	5:55	5:55	5:55	5:54	5:54	5:54	5:54	5:54	5:53	5:53	5:53	5:53	5:53	5:52
Sunset (PM)	6:05	6:04	6:04	6:03	6:03	6:02	6:02	6:01	6:01	6:00	6:00	5:59	5:59	5:58	5:58	5:57	5:57	5:56	5:55	5:55	5:54	5:54	5:53	5:53	5:52	5:52	5:51	5:51	5:50	5:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	5:58	6:05
2	12.1	5:58	6:04
3	12.1	5:58	6:04
4	12.1	5:58	6:03
5	12.1	5:57	6:03
6	12.1	5:57	6:02
7	12.1	5:57	6:02
8	12.1	5:57	6:01
9	12.1	5:57	6:01
10	12.1	5:56	6:00
11	12.1	5:56	6:00
12	12.1	5:56	5:59
13	12.0	5:56	5:59
14	12.0	5:56	5:58
15	12.0	5:55	5:58
16	12.0	5:55	5:57
17	12.0	5:55	5:57
18	12.0	5:55	5:56
19	12.0	5:55	5:55
20	12.0	5:54	5:55
21	12.0	5:54	5:54
22	12.0	5:54	5:54
23	12.0	5:54	5:53
24	12.0	5:54	5:53
25	12.0	5:53	5:52
26	12.0	5:53	5:52
27	12.0	5:53	5:51
28	12.0	5:53	5:51
29	12.0	5:53	5:50
30	12.0	5:52	5:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.81 kWh/m².

For context, solar energy here swings from a low near 4.31 kWh/m² to a high of 6.51 kWh/m² in February across the year — September's 4.81 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	4.5	4.5	4.5	4.6	4.6	4.6	4.6	4.7	4.7	4.7	4.8	4.8	4.8	4.8	4.8	4.9	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.0	5.0	5.0	5.0	5.0	5.0	5.0
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.5	Bright
2	4.5	Bright
3	4.5	Bright
4	4.6	Bright
5	4.6	Bright
6	4.6	Bright
7	4.6	Bright
8	4.7	Bright
9	4.7	Bright
10	4.7	Bright
11	4.8	Bright
12	4.8	Bright
13	4.8	Bright
14	4.8	Bright
15	4.8	Bright
16	4.9	Bright
17	4.9	Bright
18	4.9	Bright
19	4.9	Bright
20	5.0	Bright
21	5.0	Bright
22	5.0	Bright
23	5.0	Bright
24	5.0	Bright
25	5.0	Bright
26	5.0	Bright
27	5.0	Bright
28	5.0	Bright
29	5.0	Bright
30	5.0	Bright

Planning a trip in September

Hazard calendar for Garoua Boulaï

In seasonPeak

In September, Garoua Boulaï sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Garoua Boulaï's rainy season runs April–October, when most of the year's rain falls.

Garoua Boulaï sees seasonal dust haze (March), heaviest in March.

Rainy season

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Garoua Boulaï?

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

3.6

Sightseeing

11th-best month of the year

3.7

Beach & pool

11th-best month of the year

September is a weaker month for outdoor sightseeing in Garoua Boulaï.

What to pack for Garoua Boulaï in September

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

In September, Garoua Boulaï sees daytime highs around 27°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 28 days see rain.

rain gearlight clothessun protection

UV index in Garoua Boulaï in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Garoua Boulaï peaks around March 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 10 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	11	12	14	14	12	11	12	13	13	13	11	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high

	UV index (midday)	Level
Jan	11	Extreme
Feb	12	Extreme
Mar	14	Extreme
Apr	14	Extreme
May	12	Extreme
Jun	11	Extreme
Jul	12	Extreme
Aug	13	Extreme
Sep	13	Extreme
Oct	13	Extreme
Nov	11	Extreme
Dec	10	Very high

Air quality in Garoua Boulaï 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 Garoua Boulaï is worst in February — around 103 µg/m³ PM2.5 (unhealthy), about 10.3× the cleanest month (September, 10 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	43	103	66	28	16	15	12	11	10	15	16	30
Level	Poor	Unhealthy	Unhealthy	Moderate	Moderate	Moderate	Moderate	Good	Good	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	43	Poor
Feb	103	Unhealthy
Mar	66	Unhealthy
Apr	28	Moderate
May	16	Moderate
Jun	15	Moderate
Jul	12	Moderate
Aug	11	Good
Sep	10	Good
Oct	15	Moderate
Nov	16	Moderate
Dec	30	Moderate

Location & terrain

Where is Garoua Boulaï?

Garoua Boulaï sits at 5.9°N, 14.6°E, 1,034 m above sea level, in Cameroon. The nearest listed city is Baboua, 32 km away.

Topography around Garoua Boulaï

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

Within 3 km, the terrain around Garoua Boulaï has only modest variations in elevation — a maximum elevation change of 116 m around an average of 1,003 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 254 m; within 80 km, large variations in elevation — a maximum elevation change of 617 m.

The land around Garoua Boulaï is covered by shrubs (39%) and artificial surfaces (26%) within 3 km, trees (67%) and shrubs (29%) within 16 km, and trees (78%) within 80 km.

3 km

116 m

shrubs 39%

16 km

254 m

trees 67%

80 km

617 m

trees 78%

treesshrubsgrasslandcroplandartificial surfaces

← August Garoua Boulaï year-round climate October →Best places to visit in September

September weather nearby: Baboua 32 km · Meïganga 76 km · Abba 90 km · Bouar 116 km · Ngaoundal 158 km · Baoro 159 km · Batouri 163 km · Bocaranga 172 km

Cameroon travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / E; 220 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $1,972; 2025
Happiness: 5.1 / 10; World Happiness, 2025
Homicide rate: 6.8; per 100k, 2022
Road deaths: 30.2; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Very low; EF EPI 445
Religion

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 Garoua Boulaï (5.8833°, 14.55°, elevation 1,034 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).

	Avg high (°C)	Avg low (°C)
1	26	19
2	26	19
3	26	19
4	26	19
5	26	19
6	26	19
7	26	19
8	26	19
9	27	19
10	27	19
11	27	19
12	27	19
13	27	19
14	27	19
15	27	19
16	27	19
17	27	19
18	27	19
19	27	19
20	27	19
21	27	19
22	27	19
23	27	19
24	27	19
25	27	19
26	27	19
27	27	19
28	27	19
29	27	19
30	27	19

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	6	94
4	6	94
5	6	94
6	6	94
7	7	93
8	8	92
9	8	92
10	8	92
11	8	92
12	9	91
13	9	91
14	10	90
15	10	90
16	11	89
17	11	89
18	11	89
19	11	89
20	11	89
21	12	88
22	12	88
23	12	88
24	12	88
25	13	87
26	14	86
27	14	86
28	14	86
29	14	86
30	15	85

	Rain chance (%)
1	92
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	93
12	93
13	93
14	93
15	93
16	93
17	93
18	93
19	93
20	93
21	93
22	93
23	93
24	93
25	93
26	93
27	93
28	93
29	93
30	93

	Humid (%)	Muggy (%)
1	9	91
2	8	92
3	8	92
4	8	92
5	8	92
6	8	92
7	8	92
8	7	93
9	7	93
10	7	93
11	7	93
12	7	93
13	7	93
14	7	93
15	7	93
16	7	93
17	7	93
18	7	93
19	7	93
20	7	93
21	7	93
22	7	93
23	7	93
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	6	94
30	6	94

	Avg high (°C)	Avg low (°C)
1	26	19
2	26	19
3	26	19
4	26	19
5	26	19
6	26	19
7	26	19
8	26	19
9	27	19
10	27	19
11	27	19
12	27	19
13	27	19
14	27	19
15	27	19
16	27	19
17	27	19
18	27	19
19	27	19
20	27	19
21	27	19
22	27	19
23	27	19
24	27	19
25	27	19
26	27	19
27	27	19
28	27	19
29	27	19
30	27	19

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	6	94
4	6	94
5	6	94
6	6	94
7	7	93
8	8	92
9	8	92
10	8	92
11	8	92
12	9	91
13	9	91
14	10	90
15	10	90
16	11	89
17	11	89
18	11	89
19	11	89
20	11	89
21	12	88
22	12	88
23	12	88
24	12	88
25	13	87
26	14	86
27	14	86
28	14	86
29	14	86
30	15	85

	Rain chance (%)
1	92
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	93
12	93
13	93
14	93
15	93
16	93
17	93
18	93
19	93
20	93
21	93
22	93
23	93
24	93
25	93
26	93
27	93
28	93
29	93
30	93

	Humid (%)	Muggy (%)
1	9	91
2	8	92
3	8	92
4	8	92
5	8	92
6	8	92
7	8	92
8	7	93
9	7	93
10	7	93
11	7	93
12	7	93
13	7	93
14	7	93
15	7	93
16	7	93
17	7	93
18	7	93
19	7	93
20	7	93
21	7	93
22	7	93
23	7	93
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	6	94
30	6	94

	Avg high (°C)	Avg low (°C)
1	26	19
2	26	19
3	26	19
4	26	19
5	26	19
6	26	19
7	26	19
8	26	19
9	27	19
10	27	19
11	27	19
12	27	19
13	27	19
14	27	19
15	27	19
16	27	19
17	27	19
18	27	19
19	27	19
20	27	19
21	27	19
22	27	19
23	27	19
24	27	19
25	27	19
26	27	19
27	27	19
28	27	19
29	27	19
30	27	19

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	6	94
4	6	94
5	6	94
6	6	94
7	7	93
8	8	92
9	8	92
10	8	92
11	8	92
12	9	91
13	9	91
14	10	90
15	10	90
16	11	89
17	11	89
18	11	89
19	11	89
20	11	89
21	12	88
22	12	88
23	12	88
24	12	88
25	13	87
26	14	86
27	14	86
28	14	86
29	14	86
30	15	85

	Rain chance (%)
1	92
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	93
12	93
13	93
14	93
15	93
16	93
17	93
18	93
19	93
20	93
21	93
22	93
23	93
24	93
25	93
26	93
27	93
28	93
29	93
30	93

	Humid (%)	Muggy (%)
1	9	91
2	8	92
3	8	92
4	8	92
5	8	92
6	8	92
7	8	92
8	7	93
9	7	93
10	7	93
11	7	93
12	7	93
13	7	93
14	7	93
15	7	93
16	7	93
17	7	93
18	7	93
19	7	93
20	7	93
21	7	93
22	7	93
23	7	93
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	6	94
30	6	94