Dēra weather in May

In May, Dēra sees average daytime highs of 28°C and overnight lows near 15°C, with 66 mm of rain across 9.5 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 35% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of May to 12 h 24 min by month's end. Set against the rest of the year, May is Dēra's 8th-clearest and 8th-windiest month. For the whole year in context, see Dēra's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
15°
11th coldest
Rainfall
66 mm
9.5 wet days
Daylight
12 h 24 min
6:09 AM – 6:32 PM
Cloud cover
52%
8th clearest
Wind
8 km/h
8th windiest
Solar energy
6.3 kWh/m²
Travel score
6.5
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical May day in Dēra reaches about 28°C in the afternoon and slips back to 15°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, May runs on par with April and about 2°C warmer than June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12815
22815
32815
42815
52815
62815
72815
82815
92815
102815
112815
122815
132815
142815
152815
162815
172815
182815
192815
202815
212815
222815
232815
242815
252815
262815
272815
282815
292815
302715
312715

Dēra weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35149
45149
55347
65446
75545
85545
95644
105743
115842
125941
135941
146139
156139
166139
176139
186238
196337
206337
216436
226436
236535
246634
256733
266733
276931
286931
297129
307129
317129

Chance of precipitation in May

Any precipitation

Dēra gets around 66 mm of rain over 9.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 31% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
337
437
536
636
735
834
933
1033
1132
1231
1330
1430
1529
1629
1728
1828
1928
2028
2128
2228
2328
2428
2529
2629
2729
2829
2929
3029
3130

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
170291
270291
370291
471281
571281
672271
773261
873261
974251
1075241
1175241
1275241
1375241
1475241
1576240
1676240
1776240
1875250
1975250
2074260
2174260
2274260
2373270
2473270
2573270
2673270
2773270
2873270
2973270
3073270
3173270

Wind in May

Winds average 8 km/h in May.

Across May, 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.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 18 min at the start of May to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 6:13 AM to 6:09 AM, and sunset from 6:31 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:136:31
212.36:136:31
312.36:126:31
412.36:126:31
512.36:126:31
612.36:126:31
712.36:116:31
812.36:116:31
912.36:116:31
1012.36:116:31
1112.46:106:32
1212.46:106:32
1312.46:106:32
1412.46:106:32
1512.46:106:32
1612.46:096:32
1712.46:096:32
1812.46:096:33
1912.46:096:33
2012.46:096:33
2112.46:096:33
2212.46:096:33
2312.46:096:34
2412.46:096:34
2512.46:096:34
2612.46:086:34
2712.46:086:35
2812.46:086:35
2912.46:086:35
3012.46:086:35
3112.46:096:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.3 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 — May's 6.3 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.0Intense
296.0Bright
306.0Bright
315.9Bright
Planning a trip in May

Hazard calendar for Dēra

In seasonPeak

None of Dēra's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 May a good time to visit Dēra?

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

6.5
Sightseeing
7th-best month of the year
6.9
Beach & pool
7th-best month of the year

May is a reasonable time to visit Dēra for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Dēra in May

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

In May, Dēra sees daytime highs around 28°C and nights near 15°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Dēra 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 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 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 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
May 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).