Mersa weather in July

In July, Mersa sees average daytime highs of 30°C and overnight lows near 18°C, with 39 mm of rain across 7.7 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 31°C in the first days to 29°C by the end. The sky is clear or mostly clear about 44% of the time in July, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of July to 12 h 30 min by month's end. Set against the rest of the year, July is Mersa's 12th-clearest and 2nd-windiest month. For the whole year in context, see Mersa's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
18°
12th coldest
Rainfall
39 mm
7.7 wet days
Daylight
12 h 36 min
6:08 AM – 6:46 PM
Cloud cover
48%
12th clearest
Wind
7 km/h
2nd windiest
Solar energy
5.37 kWh/m²
Travel score
5.3
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 31°C in the first days to 29°C by the end.

A typical July day in Mersa reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, July runs about 1°C cooler than June and about 1°C warmer than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13118
23118
33118
43118
53118
63118
73118
83118
93118
103118
113118
123118
133018
143018
153018
163018
173018
183018
193018
203018
213018
223018
233018
243018
253018
262918
272918
282918
292918
302918
312918

Mersa weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 13°699.211.47.4
Feb25° / 14°56811.67.2
Mar27° / 15°13413.811.96.3
Apr28° / 16°9811.712.36.3
May30° / 17°234.112.56.1
Jun31° / 18°30.412.75.5
Jul30° / 18°397.712.65.3
Aug29° / 17°5910.612.45.6
Sep29° / 17°102.812.16.8
Oct27° / 16°132.911.78.0
Nov26° / 13°243.411.58.4
Dec25° / 12°384.711.38.3

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 25% of July, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27723
37723
47624
57525
67426
77426
87426
97228
107228
117228
127129
137129
147030
157030
166931
176931
186931
196832
206733
216733
226634
236535
246436
256337
266238
276238
286139
296040
305941
315941

Chance of precipitation in July

Any precipitation

Mersa gets around 39 mm of rain over 7.7 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
17
27
38
49
511
612
713
814
915
1016
1117
1218
1319
1420
1521
1623
1724
1826
1928
2029
2131
2233
2335
2436
2538
2639
2740
2842
2943
3043
3144

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19730
29640
39640
49640
59550
69550
79460
89361
99361
109271
119181
129181
139091
1489101
1588111
1687121
1786131
1885141
1983152
2081172
2180182
2279192
2376213
2475223
2573243
2671254
2769274
2868284
2966295
3065305
3165305

Wind in July

Winds average 7 km/h in July.

Across July, 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.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 42 min at the start of July to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over July. Sunrise moves from 6:04 AM to 6:12 AM, and sunset from 6:45 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:046:45
212.76:056:45
312.76:056:45
412.76:056:45
512.76:056:45
612.76:066:46
712.76:066:46
812.76:066:46
912.76:066:46
1012.76:076:46
1112.66:076:46
1212.66:076:46
1312.66:086:46
1412.66:086:46
1512.66:086:46
1612.66:086:46
1712.66:096:46
1812.66:096:46
1912.66:096:46
2012.66:096:45
2112.66:106:45
2212.66:106:45
2312.66:106:45
2412.66:106:45
2512.66:106:45
2612.66:116:44
2712.66:116:44
2812.56:116:44
2912.56:116:44
3012.56:116:44
3112.56:126:43

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.37 kWh/m².

For context, solar energy here swings from a low near 5.22 kWh/m² to a high of 6.57 kWh/m² in April across the year — July's 5.37 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in July

Hazard calendar for Mersa

In seasonPeak

In July, Mersa sits inside its dust season. The full year is below, with each hazard's peak months called out.

Mersa's rainy season runs January–January, when most of the year's rain falls.

Mersa sees seasonal dust haze (June–August), heaviest in July.

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

Is July a good time to visit Mersa?

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

5.3
Sightseeing
12th-best month of the year
7.4
Beach & pool
6th-best month of the year

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

What to pack for Mersa in July

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

In July, Mersa sees daytime highs around 30°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Mersa in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mersa peaks around March 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 19UV 15Dec 12UV 10
UV index (midday)Level
Jan12Extreme
Feb13Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun13Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in Mersa in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Mersa is worst in June — around 38 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorPoorModerateSep 1038 µg/m³Nov 1826 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb30Moderate
Mar32Moderate
Apr28Moderate
May33Moderate
Jun38Poor
Jul34Moderate
Aug37Poor
Sep38Poor
Oct29Moderate
Nov26Moderate
Dec28Moderate
Location & terrain

Where is Mersa?

Mersa sits at 11.7°N, 39.6°E, 1,721 m above sea level, in Ethiopia. The nearest listed city is Weldiya, 19 km away.

Topography around Mersa

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

Within 3 km, the terrain around Mersa has significant variations in elevation — a maximum elevation change of 451 m around an average of 1,673 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,229 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,515 m.

The land around Mersa is covered by cropland (48%) and shrubs (33%) within 3 km, shrubs (41%) and cropland (37%) within 16 km, and shrubs (36%), cropland (29%) and grassland (28%) within 80 km.

3 km
451 m
16 km
2,229 m
80 km
3,515 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
July weather nearby: Weldiya 19 km · Sifra 41 km · Hāyk’ 41 km · Dessie 59 km · Kombolcha 66 km · Batī 66 km · Lalibela 77 km · Alamata 84 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 Mersa (11.6667°, 39.65°, elevation 1,721 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).