Waliso weather in September

In September, Waliso sees average daytime highs of 21°C and overnight lows near 11°C, with 286 mm of rain across 28 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 21°C by the end. The sky is clear or mostly clear about 10% of the time in September, and the air most often feels comfortable.

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 Waliso's 9th-clearest and 12th-windiest month. For the whole year in context, see Waliso's year-round climate.

Daytime high: 21°; 10th warmest
Overnight low: 11°; 5th coldest
Rainfall: 286 mm; 28 wet days
Daylight: 12 hours; 6:21 AM – 6:24 PM
Cloud cover: 64%; 9th clearest
Wind: 4 km/h; 12th windiest
Solar energy: 5.2 kWh/m²
Travel score: 3.8; out of 10

Waliso is town in Oromia, Ethiopia.

Density: 6,079/km²; people per km²

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

← August Waliso 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 20°C in the first days to 21°C by the end.

A typical September day in Waliso reaches about 21°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 22°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)	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	22	22
Avg low (°C)	12	12	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11

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

Waliso 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	25° / 11°	11	2.7	11.6	8.3
Feb	26° / 12°	15	3.4	11.7	7.9
Mar	26° / 13°	56	8.6	11.9	6.9
Apr	26° / 14°	97	13.6	12.2	6.1
May	24° / 13°	176	19.9	12.4	5.3
Jun	21° / 13°	186	28.2	12.5	3.8
Jul	19° / 12°	235	30.3	12.4	3.3
Aug	19° / 12°	243	30.4	12.3	3.3
Sep	21° / 11°	286	28	12.1	3.8
Oct	23° / 11°	73	8.8	11.8	7.3
Nov	24° / 11°	16	2.8	11.6	8.6
Dec	24° / 11°	5	1.1	11.5	8.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 62%. 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 (%)	27	28	29	29	30	31	32	33	33	33	35	35	36	37	38	38	38	38	40	40	41	42	44	45	47	49	50	52	53	54
Cloudier (%)	73	72	71	71	70	69	68	67	67	67	65	65	64	63	62	62	62	62	60	60	59	58	56	55	53	51	50	48	47	46

	Clearer (%)	Cloudier (%)
1	27	73
2	28	72
3	29	71
4	29	71
5	30	70
6	31	69
7	32	68
8	33	67
9	33	67
10	33	67
11	35	65
12	35	65
13	36	64
14	37	63
15	38	62
16	38	62
17	38	62
18	38	62
19	40	60
20	40	60
21	41	59
22	42	58
23	44	56
24	45	55
25	47	53
26	49	51
27	50	50
28	52	48
29	53	47
30	54	46

Chance of precipitation in September

Any precipitation

Waliso gets around 286 mm of rain over 28 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 91% and peaks near 99% 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 (%)	99	99	99	98	98	98	98	98	97	97	97	96	96	96	95	95	94	93	93	92	90	89	87	85	82	80	77	74	71	67

	Rain chance (%)
1	99
2	99
3	99
4	98
5	98
6	98
7	98
8	98
9	97
10	97
11	97
12	96
13	96
14	96
15	95
16	95
17	94
18	93
19	93
20	92
21	90
22	89
23	87
24	85
25	82
26	80
27	77
28	74
29	71
30	67

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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
Dry (%)	25	25	27	28	29	30	31	33	34	36	37	39	40	42	43	44	46	47	48	50	51	53	55	57	59	62	64	66	68	70
Comfortable (%)	75	75	73	72	71	70	69	67	66	64	63	61	60	58	57	56	54	53	52	50	49	47	45	43	41	38	36	34	32	30

	Dry (%)	Comfortable (%)
1	25	75
2	25	75
3	27	73
4	28	72
5	29	71
6	30	70
7	31	69
8	33	67
9	34	66
10	36	64
11	37	63
12	39	61
13	40	60
14	42	58
15	43	57
16	44	56
17	46	54
18	47	53
19	48	52
20	50	50
21	51	49
22	53	47
23	55	45
24	57	43
25	59	41
26	62	38
27	64	36
28	66	34
29	68	32
30	70	30

Wind in September

Winds average 4 km/h in September, the calmest month.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 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)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	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	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	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 6:23 AM to 6:19 AM, and sunset from 6:33 PM to 6:15 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	12.1	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	11.9	11.9	11.9
Sunrise (AM)	6:23	6:23	6:23	6:23	6:22	6:22	6:22	6:22	6:22	6:22	6:22	6:22	6:21	6:21	6:21	6:21	6:21	6:21	6:21	6:21	6:20	6:20	6:20	6:20	6:20	6:20	6:20	6:20	6:20	6:19
Sunset (PM)	6:33	6:32	6:32	6:31	6:31	6:30	6:29	6:29	6:28	6:28	6:27	6:26	6:26	6:25	6:24	6:24	6:23	6:23	6:22	6:21	6:21	6:20	6:20	6:19	6:18	6:18	6:17	6:17	6:16	6:15

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	6:23	6:33
2	12.2	6:23	6:32
3	12.1	6:23	6:32
4	12.1	6:23	6:31
5	12.1	6:22	6:31
6	12.1	6:22	6:30
7	12.1	6:22	6:29
8	12.1	6:22	6:29
9	12.1	6:22	6:28
10	12.1	6:22	6:28
11	12.1	6:22	6:27
12	12.1	6:22	6:26
13	12.1	6:21	6:26
14	12.1	6:21	6:25
15	12.1	6:21	6:24
16	12.0	6:21	6:24
17	12.0	6:21	6:23
18	12.0	6:21	6:23
19	12.0	6:21	6:22
20	12.0	6:21	6:21
21	12.0	6:20	6:21
22	12.0	6:20	6:20
23	12.0	6:20	6:20
24	12.0	6:20	6:19
25	12.0	6:20	6:18
26	12.0	6:20	6:18
27	12.0	6:20	6:17
28	11.9	6:20	6:17
29	11.9	6:20	6:16
30	11.9	6:19	6:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.2 kWh/m².

For context, solar energy here swings from a low near 4.21 kWh/m² to a high of 6.1 kWh/m² in March across the year — September's 5.2 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)	4.9	5.0	5.0	5.0	5.0	5.0	5.1	5.1	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.4	5.5	5.5	5.5
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	4.9	Bright
2	5.0	Bright
3	5.0	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	5.1	Bright
8	5.1	Bright
9	5.1	Bright
10	5.1	Bright
11	5.1	Bright
12	5.2	Bright
13	5.2	Bright
14	5.2	Bright
15	5.2	Bright
16	5.2	Bright
17	5.2	Bright
18	5.3	Bright
19	5.3	Bright
20	5.3	Bright
21	5.3	Bright
22	5.3	Bright
23	5.3	Bright
24	5.4	Bright
25	5.4	Bright
26	5.4	Bright
27	5.4	Bright
28	5.5	Bright
29	5.5	Bright
30	5.5	Bright

Planning a trip in September

Hazard calendar for Waliso

In seasonPeak

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

Waliso's monsoon runs May–September, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Waliso?

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

3.8

Sightseeing

9th-best month of the year

2.3

Beach & pool

10th-best month of the year

September is a weaker month for outdoor sightseeing in Waliso.

What to pack for Waliso in September

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

In September, Waliso sees daytime highs around 21°C and nights near 11°C. Pack rain gear. Worth having: sun protection. About 28 days see rain.

rain gearsun protection

UV index in Waliso 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 Waliso peaks around March 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 11 (extreme).

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)	13	14	16	15	13	12	12	14	13	13	11	11
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	14	Extreme
Mar	16	Extreme
Apr	15	Extreme
May	13	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	13	Extreme
Nov	11	Extreme
Dec	11	Extreme

Air quality in Waliso 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 Waliso is worst in October — around 46 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	42	41	39	37	38	41	35	33	41	46	40	43
Level	Poor	Poor	Poor	Poor	Poor	Poor	Moderate	Moderate	Poor	Poor	Poor	Poor

	PM2.5 (µg/m³)	Level
Jan	42	Poor
Feb	41	Poor
Mar	39	Poor
Apr	37	Poor
May	38	Poor
Jun	41	Poor
Jul	35	Moderate
Aug	33	Moderate
Sep	41	Poor
Oct	46	Poor
Nov	40	Poor
Dec	43	Poor

Location & terrain

Where is Waliso?

Waliso sits at 8.5°N, 38.0°E, 2,026 m above sea level, in Ethiopia. The nearest listed city is Tulu Bolo, 31 km away.

Topography around Waliso

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

Within 3 km, the terrain around Waliso has only modest variations in elevation — a maximum elevation change of 123 m around an average of 2,024 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,083 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,623 m.

The land around Waliso is covered by cropland (43%) and artificial surfaces (22%) within 3 km, cropland (66%) within 16 km, and cropland (68%) within 80 km.

3 km

123 m

cropland 43%

16 km

1,083 m

cropland 66%

80 km

2,623 m

cropland 68%

treesshrubsgrasslandcroplandartificial surfaceswetland

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

September weather nearby: Tulu Bolo 31 km · Welk’īt’ē 34 km · Hāgere Hiywet 52 km · Guder 53 km · Gīnch’ī 59 km · Butajīra 64 km · Ādīs ‘Alem 73 km · Insēno 76 km

Ethiopia travel facts

Travel advisory: Level 3; Reconsider Travel
Power plugs: Type C / E / F / L; 220 V · 50 Hz
Prices: ≈ 37% of US; price level, 2025
GDP per capita: $933; 2025
Happiness: 4.0 / 10; World Happiness, 2025
Safe drinking water: 14%; of population, 2024
Homicide rate: 8.5; per 100k, 2012
Road deaths: 28.2; per 100k/yr, 2019
Income group: Low; World Bank
English: Low; EF EPI 499
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 Waliso (8.5342°, 37.9652°, elevation 2,026 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	20	12
2	20	12
3	20	12
4	20	12
5	20	12
6	20	12
7	20	12
8	20	12
9	20	12
10	20	12
11	20	12
12	20	12
13	20	11
14	20	11
15	20	11
16	20	11
17	21	11
18	21	11
19	21	11
20	21	11
21	21	11
22	21	11
23	21	11
24	21	11
25	21	11
26	21	11
27	21	11
28	21	11
29	22	11
30	22	11

	Clearer (%)	Cloudier (%)
1	27	73
2	28	72
3	29	71
4	29	71
5	30	70
6	31	69
7	32	68
8	33	67
9	33	67
10	33	67
11	35	65
12	35	65
13	36	64
14	37	63
15	38	62
16	38	62
17	38	62
18	38	62
19	40	60
20	40	60
21	41	59
22	42	58
23	44	56
24	45	55
25	47	53
26	49	51
27	50	50
28	52	48
29	53	47
30	54	46

	Rain chance (%)
1	99
2	99
3	99
4	98
5	98
6	98
7	98
8	98
9	97
10	97
11	97
12	96
13	96
14	96
15	95
16	95
17	94
18	93
19	93
20	92
21	90
22	89
23	87
24	85
25	82
26	80
27	77
28	74
29	71
30	67

	Dry (%)	Comfortable (%)
1	25	75
2	25	75
3	27	73
4	28	72
5	29	71
6	30	70
7	31	69
8	33	67
9	34	66
10	36	64
11	37	63
12	39	61
13	40	60
14	42	58
15	43	57
16	44	56
17	46	54
18	47	53
19	48	52
20	50	50
21	51	49
22	53	47
23	55	45
24	57	43
25	59	41
26	62	38
27	64	36
28	66	34
29	68	32
30	70	30

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

	Clearer (%)	Cloudier (%)
1	27	73
2	28	72
3	29	71
4	29	71
5	30	70
6	31	69
7	32	68
8	33	67
9	33	67
10	33	67
11	35	65
12	35	65
13	36	64
14	37	63
15	38	62
16	38	62
17	38	62
18	38	62
19	40	60
20	40	60
21	41	59
22	42	58
23	44	56
24	45	55
25	47	53
26	49	51
27	50	50
28	52	48
29	53	47
30	54	46

	Rain chance (%)
1	99
2	99
3	99
4	98
5	98
6	98
7	98
8	98
9	97
10	97
11	97
12	96
13	96
14	96
15	95
16	95
17	94
18	93
19	93
20	92
21	90
22	89
23	87
24	85
25	82
26	80
27	77
28	74
29	71
30	67

	Dry (%)	Comfortable (%)
1	25	75
2	25	75
3	27	73
4	28	72
5	29	71
6	30	70
7	31	69
8	33	67
9	34	66
10	36	64
11	37	63
12	39	61
13	40	60
14	42	58
15	43	57
16	44	56
17	46	54
18	47	53
19	48	52
20	50	50
21	51	49
22	53	47
23	55	45
24	57	43
25	59	41
26	62	38
27	64	36
28	66	34
29	68	32
30	70	30

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

	Clearer (%)	Cloudier (%)
1	27	73
2	28	72
3	29	71
4	29	71
5	30	70
6	31	69
7	32	68
8	33	67
9	33	67
10	33	67
11	35	65
12	35	65
13	36	64
14	37	63
15	38	62
16	38	62
17	38	62
18	38	62
19	40	60
20	40	60
21	41	59
22	42	58
23	44	56
24	45	55
25	47	53
26	49	51
27	50	50
28	52	48
29	53	47
30	54	46

	Rain chance (%)
1	99
2	99
3	99
4	98
5	98
6	98
7	98
8	98
9	97
10	97
11	97
12	96
13	96
14	96
15	95
16	95
17	94
18	93
19	93
20	92
21	90
22	89
23	87
24	85
25	82
26	80
27	77
28	74
29	71
30	67

	Dry (%)	Comfortable (%)
1	25	75
2	25	75
3	27	73
4	28	72
5	29	71
6	30	70
7	31	69
8	33	67
9	34	66
10	36	64
11	37	63
12	39	61
13	40	60
14	42	58
15	43	57
16	44	56
17	46	54
18	47	53
19	48	52
20	50	50
21	51	49
22	53	47
23	55	45
24	57	43
25	59	41
26	62	38
27	64	36
28	66	34
29	68	32
30	70	30