Mersa weather in January

In January, Mersa sees average daytime highs of 24°C and overnight lows near 13°C, with 69 mm of rain across 9.2 wet days and about 11.4 hours of daylight. It is the 12th-warmest and 3rd-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 46% of the time in January, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of January to 11 h 30 min by month's end. Set against the rest of the year, January is Mersa's 9th-clearest and 12th-windiest month. For the whole year in context, see Mersa's year-round climate.

Daytime high
24°
12th warmest
Overnight low
13°
2nd coldest
Rainfall
69 mm
9.2 wet days
Daylight
11 h 24 min
6:49 AM – 6:12 PM
Cloud cover
46%
9th clearest
Wind
5 km/h
12th windiest
Solar energy
5.22 kWh/m²
Travel score
7.4
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Mersa reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12412
22412
32412
42412
52412
62412
72412
82412
92412
102413
112413
122413
132413
142413
152413
162413
172413
182413
192413
202413
212413
222413
232413
242413
252413
262413
272413
282413
292413
302413
312513

Mersa weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 3rd-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
26832
36733
46634
56535
66337
76238
86139
96040
105842
115743
125644
135644
145545
155545
165545
175644
185644
195644
205743
215842
225842
235941
246139
256238
266238
276337
286436
296535
306535
316535

Chance of precipitation in January

Any precipitation

Mersa gets around 69 mm of rain over 9.2 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
123
223
324
424
525
626
726
827
928
1029
1130
1231
1332
1433
1533
1634
1734
1834
1934
2034
2134
2233
2333
2432
2531
2631
2730
2829
2928
3028
3127

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 69% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
180200
279210
377221
477221
576231
676231
775241
874251
973261
1073261
1171272
1270282
1369292
1468302
1567303
1666313
1765323
1865323
1964333
2064333
2164333
2264333
2364333
2464333
2564333
2665323
2765323
2866313
2967303
3068293
3168293

Wind in January

Winds average 5 km/h in January, the calmest month.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 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
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 18 min at the start of January to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:45 AM to 6:50 AM, and sunset from 6:04 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:456:04
211.36:456:05
311.36:466:05
411.36:466:06
511.36:466:06
611.36:476:07
711.36:476:08
811.36:476:08
911.46:476:09
1011.46:486:09
1111.46:486:10
1211.46:486:10
1311.46:496:11
1411.46:496:11
1511.46:496:12
1611.46:496:12
1711.46:496:13
1811.46:506:13
1911.46:506:14
2011.46:506:14
2111.46:506:15
2211.46:506:15
2311.46:506:16
2411.46:506:16
2511.46:506:17
2611.46:506:17
2711.56:506:18
2811.56:506:18
2911.56:506:18
3011.56:506:19
3111.56:506:19

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.22 kWh/m² — the year's lowest.

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 — January's 5.22 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in January

Hazard calendar for Mersa

In seasonPeak

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

Mersa's rainy season runs March–April, 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 January a good time to visit Mersa?

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

7.4
Sightseeing
4th-best month of the year
6.3
Beach & pool
11th-best month of the year

January is one of the better times to visit Mersa for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mersa in January

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

In January, Mersa sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Mersa in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 12 (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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).