Jimma weather in September

In September, Jimma sees average daytime highs of 23°C and overnight lows near 13°C, with 248 mm of rain across 29.3 wet days and about 12 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 06 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Jimma's 10th-clearest and 12th-windiest month. For the whole year in context, see Jimma's year-round climate.

Daytime high
23°
10th warmest
Overnight low
13°
5th coldest
Rainfall
248 mm
29.3 wet days
Daylight
12 hours
6:26 AM – 6:28 PM
Cloud cover
73%
10th clearest
Wind
3 km/h
12th windiest
Solar energy
5.34 kWh/m²
Travel score
3.7
out of 10

Jimma is city in southwestern Ethiopia.

Density
4,966/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Jimma reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 24°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102213
112213
122213
132313
142313
152313
162313
172313
182313
192313
202313
212313
222313
232313
242313
252313
262313
272313
282313
292313
302313

Jimma 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 12°244.911.67.7
Feb27° / 13°294.911.77.3
Mar27° / 14°7511.911.96.3
Apr25° / 14°14219.212.25.2
May24° / 14°22525.812.34.4
Jun23° / 13°17928.312.43.8
Jul22° / 13°19129.412.43.6
Aug22° / 13°20529.612.33.6
Sep23° / 13°24829.3123.7
Oct24° / 12°14817.911.85.7
Nov24° / 12°507.411.67.5
Dec25° / 12°193.811.68.1

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 14% of September, with mostly cloudy or overcast conditions the remaining 84%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11684
21684
31684
41684
51684
61684
71684
81684
91684
101684
111684
121585
131585
141585
151585
161486
171486
181486
191486
201585
211486
221486
231585
241585
251882
261981
271981
282179
292278
302476

Chance of precipitation in September

Any precipitation

Jimma gets around 248 mm of rain over 29.3 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 96% and peaks near 99% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
197
297
397
498
598
698
798
898
998
1099
1199
1299
1399
1499
1599
1699
1799
1899
1998
2098
2198
2297
2396
2495
2594
2693
2791
2889
2988
3086

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
11972
21972
31972
41972
51972
61972
71972
81972
91972
101972
111972
121963
131963
141963
150973
160973
170964
181954
191954
201954
211945
221945
232935
242935
253916
263916
273916
284906
294906
305896

Wind in September

Winds average 3 km/h in September, the calmest month.

Across September, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 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 12 minutes over September. Sunrise moves from 6:28 AM to 6:24 AM, and sunset from 6:37 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:286:37
212.16:286:36
312.16:286:36
412.16:286:35
512.16:276:35
612.16:276:34
712.16:276:33
812.16:276:33
912.16:276:32
1012.16:276:32
1112.16:276:31
1212.16:266:31
1312.16:266:30
1412.16:266:29
1512.06:266:29
1612.06:266:28
1712.06:266:28
1812.06:256:27
1912.06:256:26
2012.06:256:26
2112.06:256:25
2212.06:256:25
2312.06:256:24
2412.06:256:24
2512.06:246:23
2612.06:246:22
2712.06:246:22
2812.06:246:21
2911.96:246:21
3011.96:246:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.34 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.05 kWh/m² in March across the year — September's 5.34 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Jimma

In seasonPeak

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

Jimma's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Jimma?

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

3.7
Sightseeing
10th-best month of the year
2.8
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Jimma.

What to pack for Jimma in September

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

In September, Jimma sees daytime highs around 23°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 29 days see rain.

rain gearlight clothessun protection

UV index in Jimma 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 Jimma peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 11 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Nov 23UV 11
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar16Extreme
Apr13Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Jimma 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 Jimma is worst in January — around 53 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (August, 32 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorModeratePoorJan 2253 µg/m³Aug 2032 µg/m³
PM2.5 (µg/m³)Level
Jan53Poor
Feb53Poor
Mar42Poor
Apr37Poor
May33Moderate
Jun37Poor
Jul35Moderate
Aug32Moderate
Sep33Moderate
Oct39Poor
Nov44Poor
Dec48Poor
Location & terrain

Where is Jimma?

Jimma sits at 7.7°N, 36.8°E, 1,719 m above sea level, in Ethiopia. The nearest listed city is Āgaro, 28 km away.

BedelēHadero

Topography around Jimma

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

Within 3 km, the terrain around Jimma has only modest variations in elevation — a maximum elevation change of 144 m around an average of 1,729 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 890 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,535 m.

The land around Jimma is covered by artificial surfaces (46%) and trees (29%) within 3 km, trees (41%) and cropland (25%) within 16 km, and trees (44%), cropland (24%) and shrubs (22%) within 80 km.

3 km
144 m
16 km
890 m
80 km
2,535 m
treesshrubsgrasslandcroplandartificial surfaceswetland
September weather nearby: Āgaro 28 km · Suntu 49 km · Tarch’a Sodo 69 km · Waka 77 km · Bonga 78 km · Gīmbīcho 91 km · Bedelē 102 km · Hadero 106 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
Ethiopian Orthodox 44%Muslim 31%Protestant 23%other 1%

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 Jimma (7.6734°, 36.8344°, elevation 1,719 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).