Deder weather in May

In May, Deder sees average daytime highs of 24°C and overnight lows near 15°C, with 250 mm of rain across 22.9 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 21% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 12 h 18 min at the start of May to 12 h 30 min by month's end. Set against the rest of the year, May is Deder's 12th-clearest and 10th-windiest month. For the whole year in context, see Deder's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
15°
11th coldest
Rainfall
250 mm
22.9 wet days
Daylight
12 h 24 min
5:58 AM – 6:23 PM
Cloud cover
63%
12th clearest
Wind
5 km/h
10th windiest
Solar energy
5.73 kWh/m²
Travel score
5.0
out of 10

Deder is town in Oromia, Ethiopia.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical May day in Deder reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, May runs on par with April and on par with June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12415
22415
32415
42415
52415
62415
72415
82415
92415
102415
112415
122415
132415
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282415
292415
302415
312415

Deder weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 12°183.811.58.3
Feb25° / 14°254.111.78.0
Mar25° / 15°9010.411.96.9
Apr24° / 15°18518.412.25.6
May24° / 15°25022.912.45.0
Jun24° / 15°751512.56.1
Jul23° / 14°941912.55.5
Aug22° / 14°1062012.35.3
Sep23° / 15°8916.412.15.9
Oct23° / 13°1001311.86.6
Nov23° / 12°405.111.67.9
Dec23° / 12°172.911.58.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23763
33763
43763
53763
63763
73763
83862
93763
103862
113862
123862
133961
144159
154258
164258
174357
184357
194456
204654
214654
224753
234852
244852
254852
265050
274951
285050
295149
305149
315149

Chance of precipitation in May

Any precipitation

Deder gets around 250 mm of rain over 22.9 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 73% and peaks near 75% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
173
273
373
474
574
674
774
875
975
1075
1175
1275
1375
1475
1575
1674
1774
1874
1974
2073
2173
2273
2373
2472
2572
2671
2771
2870
2970
3069
3168

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1215722
2205723
3195823
4195823
5185824
6185824
7175924
8175924
9165925
10165925
11165925
12156025
13156025
14156025
15156124
16156124
17156223
18146422
19146521
20146521
21146620
22146719
23146818
24156817
25156817
26166816
27166915
28176914
29186913
30187012
31197011

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 18 min at the start of May to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 6:02 AM to 5:57 AM, and sunset from 6:21 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:026:21
212.36:016:21
312.36:016:21
412.36:016:21
512.46:006:22
612.46:006:22
712.46:006:22
812.45:596:22
912.45:596:22
1012.45:596:22
1112.45:596:22
1212.45:596:23
1312.45:586:23
1412.45:586:23
1512.45:586:23
1612.45:586:23
1712.45:586:23
1812.45:576:24
1912.45:576:24
2012.45:576:24
2112.55:576:24
2212.55:576:24
2312.55:576:25
2412.55:576:25
2512.55:576:25
2612.55:576:25
2712.55:576:26
2812.55:576:26
2912.55:576:26
3012.55:576:26
3112.55:576:27

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.73 kWh/m².

For context, solar energy here swings from a low near 5.21 kWh/m² to a high of 6.23 kWh/m² in February across the year — May's 5.73 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Deder

In seasonPeak

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

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

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

Is May a good time to visit Deder?

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

5.0
Sightseeing
12th-best month of the year
4.3
Beach & pool
10th-best month of the year

May is a reasonable time to visit Deder for sightseeing.

What to pack for Deder in May

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

In May, Deder sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 23 days see rain.

rain gearlight clothessun protection

UV index in Deder in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Deder peaks around March 18 at about 16 (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 18UV 16Nov 23UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug14Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Deder in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Deder is worst in November — around 28 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateNov 2128 µg/m³Aug 1819 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb27Moderate
Mar26Moderate
Apr22Moderate
May21Moderate
Jun24Moderate
Jul23Moderate
Aug19Moderate
Sep21Moderate
Oct27Moderate
Nov28Moderate
Dec28Moderate
Location & terrain

Where is Deder?

Deder sits at 9.3°N, 41.4°E, 2,330 m above sea level, in Ethiopia. The nearest listed city is Chelenko, 16 km away.

Topography around Deder

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

Within 3 km, the terrain around Deder has large variations in elevation — a maximum elevation change of 794 m around an average of 2,304 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,641 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,673 m.

The land around Deder is covered by cropland (48%) and shrubs (38%) within 3 km, shrubs (54%) and cropland (41%) within 16 km, and shrubs (57%) and grassland (20%) within 80 km.

3 km
794 m
16 km
1,641 m
80 km
2,673 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Chelenko 16 km · Hīrna 39 km · Dire Dawa 56 km · ‘Alemaya 63 km · Āsbe Teferī 68 km · Harar 74 km · Mī’ēso 76 km · Felana 83 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 Deder (9.3117°, 41.443°, elevation 2,330 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).