Wa weather in September

In September, Wa sees average daytime highs of 29°C and overnight lows near 22°C, with 190 mm of rain across 23.5 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. 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 Wa's 10th-clearest and 12th-windiest month. For the whole year in context, see Wa's year-round climate.

Daytime high: 29°; 10th warmest
Overnight low: 22°; 5th coldest
Rainfall: 190 mm; 23.5 wet days
Daylight: 12 h 06 min; 6:03 AM – 6:06 PM
Cloud cover: 72%; 10th clearest
Wind: 7 km/h; 12th windiest
Solar energy: 5.05 kWh/m²
Travel score: 3.5; out of 10

Wa is Upper West regional capital city.

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

← August Wa 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 29°C through the month.

A typical September day in Wa 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 2°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	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	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	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	29	22
2	29	22
3	29	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	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23

How September really feels in Wa

Once humidity and wind are folded in, September averages 28 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.

Wa weather by month

How September compares with the rest of the year at a glance. September is the 10th-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° / 20°	1	0.3	11.5	4.2
Feb	36° / 23°	6	1.1	11.7	2.6
Mar	37° / 25°	26	5.2	11.9	1.7
Apr	36° / 26°	68	11.5	12.2	2.0
May	33° / 25°	100	15.3	12.5	2.9
Jun	31° / 23°	101	16.4	12.6	3.7
Jul	29° / 23°	160	21.9	12.5	3.8
Aug	29° / 22°	224	25.7	12.3	3.5
Sep	29° / 22°	190	23.5	12.1	3.5
Oct	32° / 23°	88	14.3	11.8	3.9
Nov	34° / 21°	10	1.9	11.5	3.8
Dec	34° / 20°	0	0.2	11.4	4.3

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 70%. 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	18	19	19	20	20	21	23	23	24	25	25	28	28	29	30	30	31	32	33	34	35	36	37	37	39	40	41	43	44
Cloudier (%)	82	82	81	81	80	80	79	77	77	76	75	75	72	72	71	70	70	69	68	67	66	65	64	63	63	61	60	59	57	56

	Clearer (%)	Cloudier (%)
1	18	82
2	18	82
3	19	81
4	19	81
5	20	80
6	20	80
7	21	79
8	23	77
9	23	77
10	24	76
11	25	75
12	25	75
13	28	72
14	28	72
15	29	71
16	30	70
17	30	70
18	31	69
19	32	68
20	33	67
21	34	66
22	35	65
23	36	64
24	37	63
25	37	63
26	39	61
27	40	60
28	41	59
29	43	57
30	44	56

Chance of precipitation in September

Any precipitation

Wa gets around 190 mm of rain over 23.5 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 78% and peaks near 87% 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 (%)	87	87	86	86	85	84	84	83	82	82	81	80	80	79	78	78	77	76	76	75	75	74	73	73	72	71	70	69	68	67

	Rain chance (%)
1	87
2	87
3	86
4	86
5	85
6	84
7	84
8	83
9	82
10	82
11	81
12	80
13	80
14	79
15	78
16	78
17	77
18	76
19	76
20	75
21	75
22	74
23	73
24	73
25	72
26	71
27	70
28	69
29	68
30	67

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 97% 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 (%)	100	100	100	100	100	100	99	99	99	99	99	98	98	98	97	97	97	97	97	96	96	96	96	96	96	96	97	97	97	97
Miserable (%)	0	0	0	0	0	0	1	1	1	1	1	2	2	2	3	3	3	3	3	4	4	4	4	4	4	4	3	3	3	3

	Oppressive (%)	Miserable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	98	2
13	98	2
14	98	2
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	96	4
26	96	4
27	97	3
28	97	3
29	97	3
30	97	3

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	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
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	8	calm
6	8	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 6:04 AM to 6:02 AM, and sunset from 6:16 PM to 5:57 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	11.9	11.9	11.9	11.9
Sunrise (AM)	6:04	6:04	6:04	6:04	6:04	6:04	6:03	6:03	6:03	6:03	6:03	6:03	6:03	6:03	6:03	6:03	6:03	6:03	6:02	6:02	6:02	6:02	6:02	6:02	6:02	6:02	6:02	6:02	6:02	6:02
Sunset (PM)	6:16	6:15	6:14	6:14	6:13	6:12	6:12	6:11	6:11	6:10	6:09	6:09	6:08	6:07	6:07	6:06	6:05	6:05	6:04	6:03	6:03	6:02	6:01	6:01	6:00	5:59	5:59	5:58	5:58	5:57

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

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.05 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.39 kWh/m² in March across the year — September's 5.05 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	4.7	4.7	4.7	4.7	4.8	4.8	4.8	4.9	4.9	4.9	5.0	5.0	5.0	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	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	4.7	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	5.1	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	5.4	Bright
28	5.4	Bright
29	5.4	Bright
30	5.4	Bright

Planning a trip in September

Hazard calendar for Wa

In seasonPeak

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

Wa's monsoon runs June–September, when most of the year's rain falls.

Wa sees seasonal dust haze (February–May), heaviest in February.

Monsoon

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Wa?

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

3.5

Sightseeing

7th-best month of the year

4.6

Beach & pool

11th-best month of the year

September is a weaker month for outdoor sightseeing in Wa.

What to pack for Wa in September

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

In September, Wa sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Wa 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 Wa peaks around March 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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	9	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	9	Very high
Dec	8	Very high

Air quality in Wa 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 Wa is worst in December — around 166 µg/m³ PM2.5 (very unhealthy), about 13.3× the cleanest month (August, 13 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)	67	68	43	37	20	17	14	13	15	25	86	166
Level	Unhealthy	Unhealthy	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Unhealthy	Very unhealthy

	PM2.5 (µg/m³)	Level
Jan	67	Unhealthy
Feb	68	Unhealthy
Mar	43	Poor
Apr	37	Poor
May	20	Moderate
Jun	17	Moderate
Jul	14	Moderate
Aug	13	Moderate
Sep	15	Moderate
Oct	25	Moderate
Nov	86	Unhealthy
Dec	166	Very unhealthy

Location & terrain

Where is Wa?

Wa sits at 10.1°N, 2.5°W, 326 m above sea level, in Ghana. The nearest listed city is Batié, 50 km away.

Topography around Wa

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

Within 3 km, the terrain around Wa has only modest variations in elevation — a maximum elevation change of 65 m around an average of 316 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 183 m; within 80 km, significant variations in elevation — a maximum elevation change of 410 m.

The land around Wa is covered by artificial surfaces (55%) within 3 km, grassland (48%), cropland (24%) and shrubs (22%) within 16 km, and grassland (55%) and shrubs (33%) within 80 km.

3 km

65 m

artificial surfaces 55%

16 km

183 m

grassland 48%

80 km

410 m

grassland 55%

treesshrubsgrasslandcroplandartificial surfaces

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

September weather nearby: Batié 50 km · Jirapa 57 km · Gaoua 80 km · Doropo 97 km · Bouna 103 km · Léo 123 km · Diébougou 129 km · Damongo 132 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 Wa (10.0607°, -2.5019°, elevation 326 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	22
2	29	22
3	29	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	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23

	Clearer (%)	Cloudier (%)
1	18	82
2	18	82
3	19	81
4	19	81
5	20	80
6	20	80
7	21	79
8	23	77
9	23	77
10	24	76
11	25	75
12	25	75
13	28	72
14	28	72
15	29	71
16	30	70
17	30	70
18	31	69
19	32	68
20	33	67
21	34	66
22	35	65
23	36	64
24	37	63
25	37	63
26	39	61
27	40	60
28	41	59
29	43	57
30	44	56

	Rain chance (%)
1	87
2	87
3	86
4	86
5	85
6	84
7	84
8	83
9	82
10	82
11	81
12	80
13	80
14	79
15	78
16	78
17	77
18	76
19	76
20	75
21	75
22	74
23	73
24	73
25	72
26	71
27	70
28	69
29	68
30	67

	Oppressive (%)	Miserable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	98	2
13	98	2
14	98	2
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	96	4
26	96	4
27	97	3
28	97	3
29	97	3
30	97	3

	Avg high (°C)	Avg low (°C)
1	29	22
2	29	22
3	29	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	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23

	Clearer (%)	Cloudier (%)
1	18	82
2	18	82
3	19	81
4	19	81
5	20	80
6	20	80
7	21	79
8	23	77
9	23	77
10	24	76
11	25	75
12	25	75
13	28	72
14	28	72
15	29	71
16	30	70
17	30	70
18	31	69
19	32	68
20	33	67
21	34	66
22	35	65
23	36	64
24	37	63
25	37	63
26	39	61
27	40	60
28	41	59
29	43	57
30	44	56

	Rain chance (%)
1	87
2	87
3	86
4	86
5	85
6	84
7	84
8	83
9	82
10	82
11	81
12	80
13	80
14	79
15	78
16	78
17	77
18	76
19	76
20	75
21	75
22	74
23	73
24	73
25	72
26	71
27	70
28	69
29	68
30	67

	Oppressive (%)	Miserable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	98	2
13	98	2
14	98	2
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	96	4
26	96	4
27	97	3
28	97	3
29	97	3
30	97	3

	Avg high (°C)	Avg low (°C)
1	29	22
2	29	22
3	29	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	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23

	Clearer (%)	Cloudier (%)
1	18	82
2	18	82
3	19	81
4	19	81
5	20	80
6	20	80
7	21	79
8	23	77
9	23	77
10	24	76
11	25	75
12	25	75
13	28	72
14	28	72
15	29	71
16	30	70
17	30	70
18	31	69
19	32	68
20	33	67
21	34	66
22	35	65
23	36	64
24	37	63
25	37	63
26	39	61
27	40	60
28	41	59
29	43	57
30	44	56

	Rain chance (%)
1	87
2	87
3	86
4	86
5	85
6	84
7	84
8	83
9	82
10	82
11	81
12	80
13	80
14	79
15	78
16	78
17	77
18	76
19	76
20	75
21	75
22	74
23	73
24	73
25	72
26	71
27	70
28	69
29	68
30	67

	Oppressive (%)	Miserable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	98	2
13	98	2
14	98	2
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	96	4
21	96	4
22	96	4
23	96	4
24	96	4
25	96	4
26	96	4
27	97	3
28	97	3
29	97	3
30	97	3