Mamou weather in September

In September, Mamou sees average daytime highs of 27°C and overnight lows near 20°C, with 334 mm of rain across 28.2 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 28°C by the end. 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 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 Mamou's 10th-clearest and 10th-windiest month. For the whole year in context, see Mamou's year-round climate.

Daytime high: 27°; 10th warmest
Overnight low: 20°; 7th coldest
Rainfall: 334 mm; 28.2 wet days
Daylight: 12 h 06 min; 6:41 AM – 6:44 PM
Cloud cover: 82%; 10th clearest
Wind: 5 km/h; 10th windiest
Solar energy: 4.61 kWh/m²
Travel score: 3.5; out of 10

Mamou is human settlement.

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

← August Mamou 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

Highs climb over the month, from about 27°C in the first days to 28°C by the end.

A typical September day in Mamou reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°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	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28	28	28	28	28	28	28	28	28	28
Avg low (°C)	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20

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

How September really feels in Mamou

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.

Mamou weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 18°	4	0.9	11.5	5.5
Feb	33° / 19°	2	0.8	11.7	4.3
Mar	35° / 21°	11	2.5	11.9	3.3
Apr	34° / 22°	42	6.2	12.2	3.3
May	31° / 22°	165	19.6	12.5	3.5
Jun	28° / 21°	282	27.4	12.6	3.5
Jul	27° / 20°	349	29.9	12.5	3.4
Aug	26° / 20°	414	30	12.3	3.4
Sep	27° / 20°	334	28.2	12.1	3.5
Oct	29° / 20°	199	24.8	11.8	3.7
Nov	30° / 19°	36	5.5	11.5	5.5
Dec	31° / 18°	2	0.7	11.4	5.8

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 9% of September, with mostly cloudy or overcast conditions the remaining 89%.

	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 (%)	3	3	3	5	5	5	5	6	6	7	7	7	8	9	10	11	11	12	13	14	14	16	17	17	18	19	20	21	21	22
Cloudier (%)	97	97	97	95	95	95	95	94	94	93	93	93	92	91	90	89	89	88	87	86	86	84	83	83	82	81	80	79	79	78

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	5	95
5	5	95
6	5	95
7	5	95
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	8	92
14	9	91
15	10	90
16	11	89
17	11	89
18	12	88
19	13	87
20	14	86
21	14	86
22	16	84
23	17	83
24	17	83
25	18	82
26	19	81
27	20	80
28	21	79
29	21	79
30	22	78

Chance of precipitation in September

Any precipitation

Mamou gets around 334 mm of rain over 28.2 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 94% and peaks near 97% 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 (%)	97	97	96	96	96	96	96	96	96	95	95	95	95	95	94	94	94	94	94	94	93	93	93	93	92	92	92	91	91	90

	Rain chance (%)
1	97
2	97
3	96
4	96
5	96
6	96
7	96
8	96
9	96
10	95
11	95
12	95
13	95
14	95
15	94
16	94
17	94
18	94
19	94
20	94
21	93
22	93
23	93
24	93
25	92
26	92
27	92
28	91
29	91
30	90

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% 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
Muggy (%)	93	93	93	92	92	91	91	91	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90	89
Oppressive (%)	7	7	7	8	8	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11

	Muggy (%)	Oppressive (%)
1	93	7
2	93	7
3	93	7
4	92	8
5	92	8
6	91	9
7	91	9
8	91	9
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	90	10
24	90	10
25	90	10
26	90	10
27	90	10
28	90	10
29	90	10
30	89	11

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	6	6	6	6	6	6	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	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	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 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 6:42 AM to 6:40 AM, and sunset from 6:54 PM to 6:35 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)	12.2	12.2	12.2	12.2	12.2	12.2	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	11.9	11.9	11.9	11.9
Sunrise (AM)	6:42	6:42	6:42	6:42	6:42	6:42	6:42	6:42	6:42	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:40	6:40	6:40	6:40	6:40	6:40	6:40	6:40
Sunset (PM)	6:54	6:54	6:53	6:52	6:52	6:51	6:50	6:50	6:49	6:48	6:48	6:47	6:46	6:46	6:45	6:44	6:44	6:43	6:42	6:42	6:41	6:40	6:40	6:39	6:38	6:38	6:37	6:37	6:36	6:35

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	6:42	6:54
2	12.2	6:42	6:54
3	12.2	6:42	6:53
4	12.2	6:42	6:52
5	12.2	6:42	6:52
6	12.2	6:42	6:51
7	12.1	6:42	6:50
8	12.1	6:42	6:50
9	12.1	6:42	6:49
10	12.1	6:41	6:48
11	12.1	6:41	6:48
12	12.1	6:41	6:47
13	12.1	6:41	6:46
14	12.1	6:41	6:46
15	12.1	6:41	6:45
16	12.1	6:41	6:44
17	12.0	6:41	6:44
18	12.0	6:41	6:43
19	12.0	6:41	6:42
20	12.0	6:41	6:42
21	12.0	6:41	6:41
22	12.0	6:41	6:40
23	12.0	6:40	6:40
24	12.0	6:40	6:39
25	12.0	6:40	6:38
26	12.0	6:40	6:38
27	11.9	6:40	6:37
28	11.9	6:40	6:37
29	11.9	6:40	6:36
30	11.9	6:40	6:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.61 kWh/m².

For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 6.66 kWh/m² in March across the year — September's 4.61 kWh/m² sits near the bottom.

	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)	4.2	4.2	4.2	4.3	4.3	4.3	4.4	4.4	4.4	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
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	4.2	Bright
2	4.2	Bright
3	4.2	Bright
4	4.3	Bright
5	4.3	Bright
6	4.3	Bright
7	4.4	Bright
8	4.4	Bright
9	4.4	Bright
10	4.5	Bright
11	4.5	Bright
12	4.5	Bright
13	4.6	Bright
14	4.6	Bright
15	4.6	Bright
16	4.6	Bright
17	4.7	Bright
18	4.7	Bright
19	4.7	Bright
20	4.8	Bright
21	4.8	Bright
22	4.8	Bright
23	4.8	Bright
24	4.8	Bright
25	4.9	Bright
26	4.9	Bright
27	4.9	Bright
28	4.9	Bright
29	5.0	Bright
30	5.0	Bright

Planning a trip in September

Hazard calendar for Mamou

In seasonPeak

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

Mamou's monsoon runs June–October, when most of the year's rain falls.

Mamou sees seasonal dust haze (March–June), heaviest in June.

Monsoon

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Mamou?

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

3.5

Sightseeing

6th-best month of the year

3.7

Beach & pool

10th-best month of the year

September is a weaker month for outdoor sightseeing in Mamou.

What to pack for Mamou in September

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

In September, Mamou sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

UV index in Mamou 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 Mamou peaks around March 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (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)	10	12	14	12	12	12	12	14	13	12	9	8
Level	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Very high
Feb	12	Extreme
Mar	14	Extreme
Apr	12	Extreme
May	12	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	12	Extreme
Nov	9	Very high
Dec	8	Very high

Air quality in Mamou 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 Mamou is worst in April — around 145 µg/m³ PM2.5 (unhealthy), about 12.0× the cleanest month (August, 12 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)	51	70	63	145	44	25	15	12	16	29	38	42
Level	Poor	Unhealthy	Unhealthy	Unhealthy	Poor	Moderate	Moderate	Good	Moderate	Moderate	Poor	Poor

	PM2.5 (µg/m³)	Level
Jan	51	Poor
Feb	70	Unhealthy
Mar	63	Unhealthy
Apr	145	Unhealthy
May	44	Poor
Jun	25	Moderate
Jul	15	Moderate
Aug	12	Good
Sep	16	Moderate
Oct	29	Moderate
Nov	38	Poor
Dec	42	Poor

Location & terrain

Where is Mamou?

Mamou sits at 10.4°N, 12.1°W, 720 m above sea level, in Guinea. The nearest listed city is Kolenté, 39 km away.

Topography around Mamou

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

Within 3 km, the terrain around Mamou has only modest variations in elevation — a maximum elevation change of 203 m around an average of 747 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 549 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,376 m.

The land around Mamou is covered by grassland (37%), artificial surfaces (34%) and trees (28%) within 3 km, trees (65%) and grassland (30%) within 16 km, and trees (64%) and grassland (27%) within 80 km.

3 km

203 m

grassland 37%

16 km

549 m

trees 65%

80 km

1,376 m

trees 64%

treesshrubsgrasslandartificial surfaces

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

September weather nearby: Kolenté 39 km · Pita 83 km · Arfa Moussaïa 90 km · Kindia 92 km · Dogomet 103 km · Kabala 106 km · Labé 107 km · Dabola 115 km

Guinea travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F / K; 220 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $1,877; 2025
Happiness: 4.6 / 10; World Happiness, 2025
Road deaths: 29.7; per 100k/yr, 2019
Income group: Lower middle; World Bank
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 Mamou (10.3755°, -12.0915°, elevation 720 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	20
2	26	20
3	27	20
4	27	20
5	27	20
6	27	20
7	27	20
8	27	20
9	27	20
10	27	20
11	27	20
12	27	20
13	27	20
14	27	20
15	27	20
16	27	20
17	27	20
18	28	20
19	28	20
20	28	20
21	28	20
22	28	20
23	28	20
24	28	20
25	28	20
26	28	20
27	28	20
28	28	20
29	28	20
30	28	20

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	5	95
5	5	95
6	5	95
7	5	95
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	8	92
14	9	91
15	10	90
16	11	89
17	11	89
18	12	88
19	13	87
20	14	86
21	14	86
22	16	84
23	17	83
24	17	83
25	18	82
26	19	81
27	20	80
28	21	79
29	21	79
30	22	78

	Rain chance (%)
1	97
2	97
3	96
4	96
5	96
6	96
7	96
8	96
9	96
10	95
11	95
12	95
13	95
14	95
15	94
16	94
17	94
18	94
19	94
20	94
21	93
22	93
23	93
24	93
25	92
26	92
27	92
28	91
29	91
30	90

	Muggy (%)	Oppressive (%)
1	93	7
2	93	7
3	93	7
4	92	8
5	92	8
6	91	9
7	91	9
8	91	9
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	90	10
24	90	10
25	90	10
26	90	10
27	90	10
28	90	10
29	90	10
30	89	11

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

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	5	95
5	5	95
6	5	95
7	5	95
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	8	92
14	9	91
15	10	90
16	11	89
17	11	89
18	12	88
19	13	87
20	14	86
21	14	86
22	16	84
23	17	83
24	17	83
25	18	82
26	19	81
27	20	80
28	21	79
29	21	79
30	22	78

	Rain chance (%)
1	97
2	97
3	96
4	96
5	96
6	96
7	96
8	96
9	96
10	95
11	95
12	95
13	95
14	95
15	94
16	94
17	94
18	94
19	94
20	94
21	93
22	93
23	93
24	93
25	92
26	92
27	92
28	91
29	91
30	90

	Muggy (%)	Oppressive (%)
1	93	7
2	93	7
3	93	7
4	92	8
5	92	8
6	91	9
7	91	9
8	91	9
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	90	10
24	90	10
25	90	10
26	90	10
27	90	10
28	90	10
29	90	10
30	89	11

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

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	5	95
5	5	95
6	5	95
7	5	95
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	8	92
14	9	91
15	10	90
16	11	89
17	11	89
18	12	88
19	13	87
20	14	86
21	14	86
22	16	84
23	17	83
24	17	83
25	18	82
26	19	81
27	20	80
28	21	79
29	21	79
30	22	78

	Rain chance (%)
1	97
2	97
3	96
4	96
5	96
6	96
7	96
8	96
9	96
10	95
11	95
12	95
13	95
14	95
15	94
16	94
17	94
18	94
19	94
20	94
21	93
22	93
23	93
24	93
25	92
26	92
27	92
28	91
29	91
30	90

	Muggy (%)	Oppressive (%)
1	93	7
2	93	7
3	93	7
4	92	8
5	92	8
6	91	9
7	91	9
8	91	9
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	90	10
24	90	10
25	90	10
26	90	10
27	90	10
28	90	10
29	90	10
30	89	11