Dēra weather in September

In September, Dēra sees average daytime highs of 25°C and overnight lows near 14°C, with 106 mm of rain across 19.6 wet days and about 12 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 28% 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 Dēra's 7th-clearest and 11th-windiest month. For the whole year in context, see Dēra's year-round climate.

Daytime high
25°
10th warmest
Overnight low
14°
6th coldest
Rainfall
106 mm
19.6 wet days
Daylight
12 hours
6:18 AM – 6:20 PM
Cloud cover
51%
7th clearest
Wind
6 km/h
11th windiest
Solar energy
6.09 kWh/m²
Travel score
5.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical September day in Dēra reaches about 25°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12414
22414
32414
42414
52414
62414
72414
82414
92414
102414
112414
122414
132514
142514
152514
162514
172514
182514
192514
202514
212514
222514
232514
242514
252514
262514
272514
282514
292514
302514

Dēra weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 11°112.311.68.3
Feb27° / 13°142.511.77.8
Mar28° / 14°437.211.96.6
Apr28° / 15°7010.612.26.2
May28° / 15°669.512.46.5
Jun26° / 14°6913.912.56.1
Jul24° / 14°14426.412.44.5
Aug23° / 14°16628.212.34.2
Sep25° / 14°10619.6125.5
Oct26° / 13°274.311.87.9
Nov26° / 12°91.711.68.5
Dec26° / 11°41.111.58.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 45% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16535
26535
36634
46733
56832
66931
77030
87129
97228
107327
117228
127327
137327
147426
157426
167525
177525
187525
197525
207525
217525
227525
237525
247624
257525
267525
277525
287624
297624
307624

Chance of precipitation in September

Any precipitation

Dēra gets around 106 mm of rain over 19.6 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 64% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
284
382
481
580
679
778
877
976
1074
1173
1271
1370
1469
1567
1666
1764
1863
1961
2059
2157
2255
2353
2451
2549
2646
2744
2842
2940
3038

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 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
12080
22179
32377
42575
52773
62971
73169
83466
93664
103862
114060
124258
134555
144753
154951
165248
175446
185644
195842
206040
216238
226436
236634
246832
257030
267228
277327
287525
297624
307723

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:19 AM to 6:16 AM, and sunset from 6:29 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:196:29
212.26:196:29
312.16:196:28
412.16:196:27
512.16:196:27
612.16:196:26
712.16:196:26
812.16:196:25
912.16:186:25
1012.16:186:24
1112.16:186:23
1212.16:186:23
1312.16:186:22
1412.16:186:22
1512.16:186:21
1612.06:186:20
1712.06:176:20
1812.06:176:19
1912.06:176:18
2012.06:176:18
2112.06:176:17
2212.06:176:17
2312.06:176:16
2412.06:176:15
2512.06:166:15
2612.06:166:14
2712.06:166:14
2812.06:166:13
2911.96:166:13
3011.96:166:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.09 kWh/m².

For context, solar energy here swings from a low near 5.19 kWh/m² to a high of 6.7 kWh/m² in March across the year — September's 6.09 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
66.0Bright
76.0Bright
86.0Bright
96.0Intense
106.0Intense
116.0Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Dēra

In seasonPeak

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

Dēra's rainy season runs July–September, 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 Dēra?

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

5.5
Sightseeing
10th-best month of the year
4.9
Beach & pool
10th-best month of the year

September is a reasonable time to visit Dēra for sightseeing.

What to pack for Dēra in September

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

In September, Dēra sees daytime highs around 25°C and nights near 14°C. Pack rain gear and sun protection. Worth having: light clothes. About 20 days see rain.

rain gearsun protectionlight clothes

UV index in Dēra 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 Dēra peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 10 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 16Dec 10UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Dēra 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 Dēra is worst in June — around 39 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJun 1738 µg/m³Nov 2324 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb26Moderate
Mar27Moderate
Apr26Moderate
May31Moderate
Jun39Poor
Jul32Moderate
Aug29Moderate
Sep36Poor
Oct32Moderate
Nov24Moderate
Dec24Moderate
Location & terrain

Where is Dēra?

Dēra sits at 8.4°N, 38.9°E, 1,665 m above sea level, in Ethiopia. The nearest listed city is ‘Alem T’ēna, 16 km away.

Topography around Dēra

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

Within 3 km, the terrain around Dēra has only modest variations in elevation — a maximum elevation change of 124 m around an average of 1,681 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,416 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,913 m.

The land around Dēra is covered by cropland (55%) and grassland (24%) within 3 km, cropland (82%) within 16 km, and cropland (76%) within 80 km.

3 km
124 m
16 km
1,416 m
80 km
2,913 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: ‘Alem T’ēna 16 km · Mek’ī 28 km · Mojo 36 km · Wonji 41 km · Bishoftu 42 km · Wenjī 48 km · Adama 49 km · Īteya 52 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 Dēra (8.4°, 38.85°, elevation 1,665 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).