Bolgatanga weather in September

In September, Bolgatanga sees average daytime highs of 30°C and overnight lows near 23°C, with 144 mm of rain across 18.5 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 9% 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 Bolgatanga's 10th-clearest and 12th-windiest month. For the whole year in context, see Bolgatanga's year-round climate.

Daytime high: 30°; 11th warmest
Overnight low: 23°; 4th coldest
Rainfall: 144 mm; 18.5 wet days
Daylight: 12 h 06 min; 5:56 AM – 5:59 PM
Cloud cover: 72%; 10th clearest
Wind: 7 km/h; 12th windiest
Solar energy: 5.04 kWh/m²
Travel score: 3.7; out of 10

Bolgatanga is capital of the Upper East Region, Ghana.

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

← August Bolgatanga 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 29°C in the first days to 31°C by the end.

A typical September day in Bolgatanga reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°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)	29	29	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31	31	31
Avg low (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	29	23
2	29	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

How September really feels in Bolgatanga

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

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.

Bolgatanga weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	34° / 21°	0	0.1	11.4	4.0
Feb	36° / 24°	2	0.5	11.6	2.3
Mar	38° / 27°	10	2.3	11.9	1.0
Apr	38° / 27°	32	6.2	12.2	1.2
May	35° / 26°	53	10.3	12.5	2.2
Jun	33° / 25°	62	11.4	12.6	3.4
Jul	30° / 24°	132	19.2	12.6	3.7
Aug	29° / 23°	211	25.2	12.4	3.4
Sep	30° / 23°	144	18.5	12.1	3.7
Oct	33° / 23°	46	8.7	11.8	3.7
Nov	35° / 22°	4	0.6	11.5	3.0
Dec	34° / 21°	0	0	11.4	3.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 71%. 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 (%)	18	19	19	20	21	21	22	22	24	24	25	25	27	27	27	29	30	30	31	32	33	34	35	38	39	40	41	42	42	44
Cloudier (%)	82	81	81	80	79	79	78	78	76	76	75	75	73	73	73	71	70	70	69	68	67	66	65	62	61	60	59	58	58	56

	Clearer (%)	Cloudier (%)
1	18	82
2	19	81
3	19	81
4	20	80
5	21	79
6	21	79
7	22	78
8	22	78
9	24	76
10	24	76
11	25	75
12	25	75
13	27	73
14	27	73
15	27	73
16	29	71
17	30	70
18	30	70
19	31	69
20	32	68
21	33	67
22	34	66
23	35	65
24	38	62
25	39	61
26	40	60
27	41	59
28	42	58
29	42	58
30	44	56

Chance of precipitation in September

Any precipitation

Bolgatanga gets around 144 mm of rain over 18.5 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 63% and peaks near 79% 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 (%)	79	78	77	76	75	74	73	72	71	70	69	68	67	66	65	63	62	61	59	57	56	54	53	51	50	49	48	46	45	45

	Rain chance (%)
1	79
2	78
3	77
4	76
5	75
6	74
7	73
8	72
9	71
10	70
11	69
12	68
13	67
14	66
15	65
16	63
17	62
18	61
19	59
20	57
21	56
22	54
23	53
24	51
25	50
26	49
27	48
28	46
29	45
30	45

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 82% 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
Oppressive (%)	90	90	90	89	89	88	88	87	87	86	85	84	83	82	81	80	79	78	78	77	76	76	75	75	75	75	75	75	76	76
Miserable (%)	10	10	10	11	11	12	12	13	13	14	15	16	17	18	19	20	21	22	22	23	24	24	25	25	25	25	25	25	24	24

	Oppressive (%)	Miserable (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	88	12
7	88	12
8	87	13
9	87	13
10	86	14
11	85	15
12	84	16
13	83	17
14	82	18
15	81	19
16	80	20
17	79	21
18	78	22
19	78	22
20	77	23
21	76	24
22	76	24
23	75	25
24	75	25
25	75	25
26	75	25
27	75	25
28	75	25
29	76	24
30	76	24

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 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)	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	7	7	7	7	7
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	8	calm
2	8	calm
3	8	calm
4	8	calm
5	7	calm
6	7	calm
7	7	calm
8	7	calm
9	7	calm
10	7	calm
11	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	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 5:57 AM to 5:55 AM, and sunset from 6:09 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)	12.2	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	12.0	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)	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:56	5:55	5:55	5:55	5:55	5:55	5:55	5:55
Sunset (PM)	6:09	6:09	6:08	6:07	6:07	6:06	6:06	6:05	6:04	6:04	6:03	6:02	6:02	6:01	6:00	5:59	5:59	5:58	5:57	5:57	5:56	5:55	5:55	5:54	5:53	5:53	5:52	5:51	5:51	5:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	5:57	6:09
2	12.2	5:57	6:09
3	12.2	5:57	6:08
4	12.2	5:57	6:07
5	12.2	5:57	6:07
6	12.2	5:57	6:06
7	12.2	5:57	6:06
8	12.1	5:56	6:05
9	12.1	5:56	6:04
10	12.1	5:56	6:04
11	12.1	5:56	6:03
12	12.1	5:56	6:02
13	12.1	5:56	6:02
14	12.1	5:56	6:01
15	12.1	5:56	6:00
16	12.1	5:56	5:59
17	12.0	5:56	5:59
18	12.0	5:56	5:58
19	12.0	5:56	5:57
20	12.0	5:56	5:57
21	12.0	5:56	5:56
22	12.0	5:56	5:55
23	12.0	5:56	5:55
24	12.0	5:55	5:54
25	12.0	5:55	5:53
26	12.0	5:55	5:53
27	11.9	5:55	5:52
28	11.9	5:55	5:51
29	11.9	5:55	5:51
30	11.9	5:55	5:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.04 kWh/m².

For context, solar energy here swings from a low near 4.58 kWh/m² to a high of 6.55 kWh/m² in March across the year — September's 5.04 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)	4.7	4.7	4.7	4.7	4.8	4.8	4.8	4.8	4.9	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.1	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	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	4.7	Bright
2	4.7	Bright
3	4.7	Bright
4	4.7	Bright
5	4.8	Bright
6	4.8	Bright
7	4.8	Bright
8	4.8	Bright
9	4.9	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	5.1	Bright
20	5.1	Bright
21	5.2	Bright
22	5.2	Bright
23	5.2	Bright
24	5.2	Bright
25	5.3	Bright
26	5.3	Bright
27	5.3	Bright
28	5.3	Bright
29	5.3	Bright
30	5.4	Bright

Planning a trip in September

Hazard calendar for Bolgatanga

In seasonPeak

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

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

Bolgatanga sees seasonal dust haze (February–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 Bolgatanga?

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

3.7

Sightseeing

3rd-best month of the year

5.2

Beach & pool

7th-best month of the year

September is a weaker month for outdoor sightseeing in Bolgatanga.

What to pack for Bolgatanga in September

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

In September, Bolgatanga sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Bolgatanga 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 Bolgatanga peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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)	9	11	13	12	12	11	11	12	13	11	8	8
Level	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	9	Very high
Feb	11	Extreme
Mar	13	Extreme
Apr	12	Extreme
May	12	Extreme
Jun	11	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	13	Extreme
Oct	11	Extreme
Nov	8	Very high
Dec	8	Very high

Air quality in Bolgatanga 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 Bolgatanga is worst in December — around 97 µg/m³ PM2.5 (unhealthy), about 6.3× the cleanest month (August, 15 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)	78	78	56	41	22	18	16	15	20	31	70	97
Level	Unhealthy	Unhealthy	Unhealthy	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Unhealthy	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	78	Unhealthy
Feb	78	Unhealthy
Mar	56	Unhealthy
Apr	41	Poor
May	22	Moderate
Jun	18	Moderate
Jul	16	Moderate
Aug	15	Moderate
Sep	20	Moderate
Oct	31	Moderate
Nov	70	Unhealthy
Dec	97	Unhealthy

Location & terrain

Where is Bolgatanga?

Bolgatanga sits at 10.8°N, 0.9°W, 191 m above sea level, in Ghana. The nearest listed city is Navrongo, 29 km away.

Topography around Bolgatanga

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

Within 3 km, the terrain around Bolgatanga has only modest variations in elevation — a maximum elevation change of 67 m around an average of 186 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 253 m; within 80 km, significant variations in elevation — a maximum elevation change of 380 m.

The land around Bolgatanga is covered by artificial surfaces (42%) and cropland (41%) within 3 km, cropland (55%) and grassland (27%) within 16 km, and cropland (43%), grassland (36%) and shrubs (20%) within 80 km.

3 km

67 m

artificial surfaces 42%

16 km

253 m

cropland 55%

80 km

380 m

cropland 43%

treesshrubsgrasslandcroplandartificial surfaces

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

September weather nearby: Navrongo 29 km · Zabré 50 km · Pô 53 km · Nalerigu 60 km · Gomboussougou 72 km · Bawku 73 km · Bittou 79 km · Sinkassé 100 km

Ghana travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type D / G; 230 V · 50 Hz
Prices: ≈ 38% of US; price level, 2025
GDP per capita: $3,257; 2025
Happiness: 4.6 / 10; World Happiness, 2025
Safe drinking water: 43%; of population, 2024
Homicide rate: 1.8; per 100k, 2022
Road deaths: 25.7; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Moderate; EF EPI 540
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 Bolgatanga (10.7856°, -0.8514°, elevation 191 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	29	23
2	29	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	18	82
2	19	81
3	19	81
4	20	80
5	21	79
6	21	79
7	22	78
8	22	78
9	24	76
10	24	76
11	25	75
12	25	75
13	27	73
14	27	73
15	27	73
16	29	71
17	30	70
18	30	70
19	31	69
20	32	68
21	33	67
22	34	66
23	35	65
24	38	62
25	39	61
26	40	60
27	41	59
28	42	58
29	42	58
30	44	56

	Rain chance (%)
1	79
2	78
3	77
4	76
5	75
6	74
7	73
8	72
9	71
10	70
11	69
12	68
13	67
14	66
15	65
16	63
17	62
18	61
19	59
20	57
21	56
22	54
23	53
24	51
25	50
26	49
27	48
28	46
29	45
30	45

	Oppressive (%)	Miserable (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	88	12
7	88	12
8	87	13
9	87	13
10	86	14
11	85	15
12	84	16
13	83	17
14	82	18
15	81	19
16	80	20
17	79	21
18	78	22
19	78	22
20	77	23
21	76	24
22	76	24
23	75	25
24	75	25
25	75	25
26	75	25
27	75	25
28	75	25
29	76	24
30	76	24

	Avg high (°C)	Avg low (°C)
1	29	23
2	29	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	18	82
2	19	81
3	19	81
4	20	80
5	21	79
6	21	79
7	22	78
8	22	78
9	24	76
10	24	76
11	25	75
12	25	75
13	27	73
14	27	73
15	27	73
16	29	71
17	30	70
18	30	70
19	31	69
20	32	68
21	33	67
22	34	66
23	35	65
24	38	62
25	39	61
26	40	60
27	41	59
28	42	58
29	42	58
30	44	56

	Rain chance (%)
1	79
2	78
3	77
4	76
5	75
6	74
7	73
8	72
9	71
10	70
11	69
12	68
13	67
14	66
15	65
16	63
17	62
18	61
19	59
20	57
21	56
22	54
23	53
24	51
25	50
26	49
27	48
28	46
29	45
30	45

	Oppressive (%)	Miserable (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	88	12
7	88	12
8	87	13
9	87	13
10	86	14
11	85	15
12	84	16
13	83	17
14	82	18
15	81	19
16	80	20
17	79	21
18	78	22
19	78	22
20	77	23
21	76	24
22	76	24
23	75	25
24	75	25
25	75	25
26	75	25
27	75	25
28	75	25
29	76	24
30	76	24

	Avg high (°C)	Avg low (°C)
1	29	23
2	29	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	18	82
2	19	81
3	19	81
4	20	80
5	21	79
6	21	79
7	22	78
8	22	78
9	24	76
10	24	76
11	25	75
12	25	75
13	27	73
14	27	73
15	27	73
16	29	71
17	30	70
18	30	70
19	31	69
20	32	68
21	33	67
22	34	66
23	35	65
24	38	62
25	39	61
26	40	60
27	41	59
28	42	58
29	42	58
30	44	56

	Rain chance (%)
1	79
2	78
3	77
4	76
5	75
6	74
7	73
8	72
9	71
10	70
11	69
12	68
13	67
14	66
15	65
16	63
17	62
18	61
19	59
20	57
21	56
22	54
23	53
24	51
25	50
26	49
27	48
28	46
29	45
30	45

	Oppressive (%)	Miserable (%)
1	90	10
2	90	10
3	90	10
4	89	11
5	89	11
6	88	12
7	88	12
8	87	13
9	87	13
10	86	14
11	85	15
12	84	16
13	83	17
14	82	18
15	81	19
16	80	20
17	79	21
18	78	22
19	78	22
20	77	23
21	76	24
22	76	24
23	75	25
24	75	25
25	75	25
26	75	25
27	75	25
28	75	25
29	76	24
30	76	24