Biliri weather in September

In September, Biliri sees average daytime highs of 29°C and overnight lows near 22°C, with 94 mm of rain across 15.6 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 5% of the time in September, and the air most often feels oppressive.

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 Biliri's 10th-clearest and 10th-windiest month. For the whole year in context, see Biliri's year-round climate.

Daytime high: 29°; 11th warmest
Overnight low: 22°; 6th coldest
Rainfall: 94 mm; 15.6 wet days
Daylight: 12 h 06 min; 6:08 AM – 6:11 PM
Cloud cover: 75%; 10th clearest
Wind: 9 km/h; 10th windiest
Solar energy: 5.03 kWh/m²
Travel score: 4.4; out of 10

← August Biliri 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 28°C in the first days to 30°C by the end.

A typical September day in Biliri reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 3°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)	28	28	28	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	30	30	30	30	30	30	30	30	30	30	30	30
Avg low (°C)	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22

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

How September really feels in Biliri

Once humidity and wind are folded in, September averages 20 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

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Biliri weather by month

How September compares with the rest of the year at a glance. September is the 11th-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	32° / 18°	0	0	11.5	5.0
Feb	35° / 21°	0	0.1	11.7	3.1
Mar	38° / 24°	2	0.3	11.9	1.4
Apr	38° / 26°	14	3.5	12.2	1.3
May	35° / 26°	42	9.4	12.4	2.3
Jun	33° / 24°	51	9.4	12.6	3.6
Jul	30° / 23°	103	15.2	12.5	4.1
Aug	28° / 22°	196	22.4	12.3	4.0
Sep	29° / 22°	94	15.6	12.1	4.4
Oct	32° / 22°	36	7.2	11.8	4.2
Nov	34° / 20°	1	0.2	11.5	3.9
Dec	32° / 18°	0	0	11.4	5.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 76%. Skies tend to open up as the month goes on.

	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 (%)	13	14	14	15	15	17	17	18	19	20	21	21	22	22	23	24	24	26	26	26	28	28	30	30	32	33	34	35	36	38
Cloudier (%)	87	86	86	85	85	83	83	82	81	80	79	79	78	78	77	76	76	74	74	74	72	72	70	70	68	67	66	65	64	62

	Clearer (%)	Cloudier (%)
1	13	87
2	14	86
3	14	86
4	15	85
5	15	85
6	17	83
7	17	83
8	18	82
9	19	81
10	20	80
11	21	79
12	21	79
13	22	78
14	22	78
15	23	77
16	24	76
17	24	76
18	26	74
19	26	74
20	26	74
21	28	72
22	28	72
23	30	70
24	30	70
25	32	68
26	33	67
27	34	66
28	35	65
29	36	64
30	38	62

Chance of precipitation in September

Any precipitation

Biliri gets around 94 mm of rain over 15.6 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 52% and peaks near 64% on the wettest days. The odds ease toward the end of the month.

	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 (%)	64	62	61	60	59	58	58	57	56	55	55	54	53	52	52	51	51	50	50	49	49	48	47	46	45	44	43	42	42	41

	Rain chance (%)
1	64
2	62
3	61
4	60
5	59
6	58
7	58
8	57
9	56
10	55
11	55
12	54
13	53
14	52
15	52
16	51
17	51
18	50
19	50
20	49
21	49
22	48
23	47
24	46
25	45
26	44
27	43
28	42
29	42
30	41

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 93% 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 (%)	9	9	9	9	9	9	8	8	8	8	7	7	7	6	6	6	5	5	4	4	4	4	4	5	5	5	6	6	7	7
Oppressive (%)	91	91	91	91	91	91	92	92	92	92	93	93	93	94	94	94	95	95	96	96	96	96	96	95	95	95	94	94	93	93

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

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 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)	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8	8	8	8	8
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	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	9	calm
11	9	calm
12	9	calm
13	9	calm
14	9	calm
15	9	calm
16	9	calm
17	9	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	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 6:09 AM to 6:07 AM, and sunset from 6:21 PM to 6:02 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	12.1	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	11.9	11.9	11.9
Sunrise (AM)	6:09	6:09	6:09	6:09	6:09	6:09	6:09	6:09	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:07	6:07	6:07	6:07	6:07	6:07	6:07	6:07	6:07	6:07	6:07
Sunset (PM)	6:21	6:20	6:19	6:19	6:18	6:17	6:17	6:16	6:16	6:15	6:14	6:14	6:13	6:12	6:12	6:11	6:10	6:10	6:09	6:08	6:08	6:07	6:06	6:06	6:05	6:05	6:04	6:03	6:03	6:02

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	6:09	6:21
2	12.2	6:09	6:20
3	12.2	6:09	6:19
4	12.2	6:09	6:19
5	12.2	6:09	6:18
6	12.1	6:09	6:17
7	12.1	6:09	6:17
8	12.1	6:09	6:16
9	12.1	6:08	6:16
10	12.1	6:08	6:15
11	12.1	6:08	6:14
12	12.1	6:08	6:14
13	12.1	6:08	6:13
14	12.1	6:08	6:12
15	12.1	6:08	6:12
16	12.1	6:08	6:11
17	12.0	6:08	6:10
18	12.0	6:08	6:10
19	12.0	6:08	6:09
20	12.0	6:07	6:08
21	12.0	6:07	6:08
22	12.0	6:07	6:07
23	12.0	6:07	6:06
24	12.0	6:07	6:06
25	12.0	6:07	6:05
26	12.0	6:07	6:05
27	12.0	6:07	6:04
28	11.9	6:07	6:03
29	11.9	6:07	6:03
30	11.9	6:07	6:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.03 kWh/m².

For context, solar energy here swings from a low near 4.4 kWh/m² to a high of 7.02 kWh/m² in March across the year — September's 5.03 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)	4.6	4.6	4.6	4.7	4.7	4.7	4.8	4.8	4.8	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.1	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	5.3	5.4	5.4
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	4.6	Bright
2	4.6	Bright
3	4.6	Bright
4	4.7	Bright
5	4.7	Bright
6	4.7	Bright
7	4.8	Bright
8	4.8	Bright
9	4.8	Bright
10	4.9	Bright
11	4.9	Bright
12	4.9	Bright
13	5.0	Bright
14	5.0	Bright
15	5.0	Bright
16	5.0	Bright
17	5.1	Bright
18	5.1	Bright
19	5.2	Bright
20	5.2	Bright
21	5.2	Bright
22	5.2	Bright
23	5.3	Bright
24	5.3	Bright
25	5.3	Bright
26	5.3	Bright
27	5.3	Bright
28	5.3	Bright
29	5.4	Bright
30	5.4	Bright

Planning a trip in September

Hazard calendar for Biliri

In seasonPeak

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

Biliri's monsoon runs July–September, when most of the year's rain falls.

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

Monsoon

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Biliri?

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

4.4

Sightseeing

3rd-best month of the year

5.7

Beach & pool

7th-best month of the year

September is a reasonable time to visit Biliri for sightseeing.

What to pack for Biliri in September

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

In September, Biliri sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

UV index in Biliri 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 Biliri peaks around March 15 at about 12 (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	12	11	10	11	11	12	12	11	10	8
Level	Very high	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Very high
Feb	12	Extreme
Mar	12	Extreme
Apr	11	Extreme
May	10	Very high
Jun	11	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	12	Extreme
Oct	11	Extreme
Nov	10	Very high
Dec	8	Very high

Air quality in Biliri 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 Biliri is worst in February — around 98 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (July, 20 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)	89	98	94	64	32	26	20	23	28	43	54	79
Level	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Moderate	Moderate	Moderate	Moderate	Moderate	Poor	Poor	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	89	Unhealthy
Feb	98	Unhealthy
Mar	94	Unhealthy
Apr	64	Unhealthy
May	32	Moderate
Jun	26	Moderate
Jul	20	Moderate
Aug	23	Moderate
Sep	28	Moderate
Oct	43	Poor
Nov	54	Poor
Dec	79	Unhealthy

Location & terrain

Where is Biliri?

Biliri sits at 9.9°N, 11.2°E, 549 m above sea level, in Nigeria. The nearest listed city is Kumo, 20 km away.

Topography around Biliri

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

Within 3 km, the terrain around Biliri has significant variations in elevation — a maximum elevation change of 270 m around an average of 525 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 782 m; within 80 km, large variations in elevation — a maximum elevation change of 961 m.

The land around Biliri is covered by cropland (49%) and grassland (28%) within 3 km, cropland (69%) and grassland (20%) within 16 km, and cropland (61%) and grassland (20%) within 80 km.

3 km

270 m

cropland 49%

16 km

782 m

cropland 69%

80 km

961 m

cropland 61%

treesshrubsgrasslandcroplandartificial surfaceswater

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

September weather nearby: Kumo 20 km · Pindiga 33 km · Garko 35 km · Deba 42 km · Gombe 47 km · Numan 99 km · Jalingo 109 km · Dukku 117 km

Nigeria travel facts

Travel advisory: Level 3; Reconsider Travel
Power plugs: Type D / G; 230 V · 50 Hz
Prices: ≈ 13% of US; price level, 2025
GDP per capita: $1,224; 2025
Happiness: 4.8 / 10; World Happiness, 2025
Safe drinking water: 30%; of population, 2024
Homicide rate: 15.7; per 100k, 2023
Road deaths: 20.7; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: High; EF EPI 569
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 Biliri (9.8671°, 11.2259°, elevation 549 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	28	22
2	28	22
3	28	22
4	29	22
5	29	22
6	29	22
7	29	22
8	29	22
9	29	22
10	29	22
11	29	22
12	29	22
13	29	22
14	29	22
15	29	22
16	29	22
17	29	22
18	29	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	22
24	30	22
25	30	22
26	30	22
27	30	22
28	30	22
29	30	22
30	30	22

	Clearer (%)	Cloudier (%)
1	13	87
2	14	86
3	14	86
4	15	85
5	15	85
6	17	83
7	17	83
8	18	82
9	19	81
10	20	80
11	21	79
12	21	79
13	22	78
14	22	78
15	23	77
16	24	76
17	24	76
18	26	74
19	26	74
20	26	74
21	28	72
22	28	72
23	30	70
24	30	70
25	32	68
26	33	67
27	34	66
28	35	65
29	36	64
30	38	62

	Rain chance (%)
1	64
2	62
3	61
4	60
5	59
6	58
7	58
8	57
9	56
10	55
11	55
12	54
13	53
14	52
15	52
16	51
17	51
18	50
19	50
20	49
21	49
22	48
23	47
24	46
25	45
26	44
27	43
28	42
29	42
30	41

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

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

	Clearer (%)	Cloudier (%)
1	13	87
2	14	86
3	14	86
4	15	85
5	15	85
6	17	83
7	17	83
8	18	82
9	19	81
10	20	80
11	21	79
12	21	79
13	22	78
14	22	78
15	23	77
16	24	76
17	24	76
18	26	74
19	26	74
20	26	74
21	28	72
22	28	72
23	30	70
24	30	70
25	32	68
26	33	67
27	34	66
28	35	65
29	36	64
30	38	62

	Rain chance (%)
1	64
2	62
3	61
4	60
5	59
6	58
7	58
8	57
9	56
10	55
11	55
12	54
13	53
14	52
15	52
16	51
17	51
18	50
19	50
20	49
21	49
22	48
23	47
24	46
25	45
26	44
27	43
28	42
29	42
30	41

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

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

	Clearer (%)	Cloudier (%)
1	13	87
2	14	86
3	14	86
4	15	85
5	15	85
6	17	83
7	17	83
8	18	82
9	19	81
10	20	80
11	21	79
12	21	79
13	22	78
14	22	78
15	23	77
16	24	76
17	24	76
18	26	74
19	26	74
20	26	74
21	28	72
22	28	72
23	30	70
24	30	70
25	32	68
26	33	67
27	34	66
28	35	65
29	36	64
30	38	62

	Rain chance (%)
1	64
2	62
3	61
4	60
5	59
6	58
7	58
8	57
9	56
10	55
11	55
12	54
13	53
14	52
15	52
16	51
17	51
18	50
19	50
20	49
21	49
22	48
23	47
24	46
25	45
26	44
27	43
28	42
29	42
30	41

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