Mariental weather in January

In January, Mariental sees average daytime highs of 34°C and overnight lows near 22°C, with 44 mm of rain across 7.4 wet days and about 13.4 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 67% of the time in January, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is Mariental's 11th-clearest and 8th-windiest month. For the whole year in context, see Mariental's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
22°
12th coldest
Rainfall
44 mm
7.4 wet days
Daylight
13 h 24 min
6:16 AM – 7:39 PM
Cloud cover
32%
11th clearest
Wind
13 km/h
8th windiest
Solar energy
8.11 kWh/m²
Travel score
3.3
out of 10

Mariental is town in Namibia.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical January day in Mariental reaches about 34°C in the afternoon and slips back to 22°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 38°C. Set against its neighbours, January runs on par with December and about 1°C warmer than February.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13522
23522
33522
43522
53522
63522
73522
83422
93422
103422
113422
123422
133422
143422
153422
163422
173422
183422
193422
203422
213422
223422
233422
243422
253422
263422
273422
283422
293422
303422
313422

How January really feels in Mariental

Once humidity and wind are folded in, January averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Mariental weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 22°447.413.43.3
Feb33° / 22°53812.93.7
Mar32° / 20°305.612.24.7
Apr29° / 16°173.411.46.8
May26° / 11°30.610.89.0
Jun23° / 10.310.59.5
Jul23° / 10.310.69.4
Aug25° / 00.111.19.5
Sep29° / 13°20.311.87.4
Oct32° / 17°61.112.65.3
Nov33° / 19°92.113.24.3
Dec35° / 21°253.713.53.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% 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 18%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18317
28218
38218
48218
58218
68218
78119
88119
98119
108119
118020
128020
138020
148020
158020
168020
178020
188119
198119
208119
218119
228218
238218
248317
258317
268317
278317
288317
298416
308416
318515

Chance of precipitation in January

Any precipitation

Mariental gets around 44 mm of rain over 7.4 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 24% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
118
219
319
419
520
620
720
821
921
1022
1122
1223
1324
1425
1525
1626
1727
1828
1928
2029
2129
2229
2328
2428
2527
2626
2726
2825
2925
3024
3124

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 67% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
176996
276996
376996
4759106
5759106
6749116
7749116
8739126
9729127
10729127
117010137
127010137
137010137
146811138
156711148
166612148
176512149
186413149
1963131410
2062131510
2161141510
2261141510
2360141511
2461141510
2561141510
2662131510
2762131510
2862131510
2963121510
3063121510
3165111410

Wind in January

Winds average 13 km/h in January.

Across January, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 30 min at the start of January to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 6:06 AM to 6:27 AM, and sunset from 7:36 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:067:36
213.56:077:37
313.56:077:37
413.56:087:37
513.56:097:37
613.56:097:38
713.56:107:38
813.56:117:38
913.46:117:38
1013.46:127:38
1113.46:137:38
1213.46:137:38
1313.46:147:39
1413.46:157:39
1513.46:167:39
1613.46:167:39
1713.46:177:39
1813.36:187:39
1913.36:187:38
2013.36:197:38
2113.36:207:38
2213.36:217:38
2313.36:217:38
2413.36:227:38
2513.26:237:38
2613.26:237:37
2713.26:247:37
2813.26:257:37
2913.26:267:37
3013.26:267:36
3113.16:277:36

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 8.11 kWh/m².

For context, solar energy here swings from a low near 4.31 kWh/m² to a high of 8.54 kWh/m² in December across the year — January's 8.11 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.4Intense
28.4Intense
38.3Intense
48.3Intense
58.3Intense
68.3Intense
78.3Intense
88.2Intense
98.2Intense
108.2Intense
118.2Intense
128.2Intense
138.1Intense
148.1Intense
158.1Intense
168.1Intense
178.1Intense
188.0Intense
198.0Intense
208.0Intense
218.0Intense
228.0Intense
238.0Intense
248.0Intense
257.9Intense
267.9Intense
277.9Intense
287.9Intense
297.9Intense
307.9Intense
317.9Intense
Planning a trip in January

Is January a good time to visit Mariental?

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

3.3
Sightseeing
11th-best month of the year
6.6
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Mariental. The water and warmth also suit a beach or pool day.

What to pack for Mariental in January

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

In January, Mariental sees daytime highs around 34°C and nights near 22°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Mariental in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 16 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mariental peaks around January 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 15UV 16Jun 18UV 5
UV index (midday)Level
Jan16Extreme
Feb14Extreme
Mar13Extreme
Apr9Very high
May7High
Jun5High
Jul6High
Aug8Very high
Sep10Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Mariental 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 Mariental is worst in December — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (April, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateDec 1115 µg/m³Apr 189 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb11Good
Mar10Good
Apr9Good
May9Good
Jun12Good
Jul12Moderate
Aug12Moderate
Sep13Moderate
Oct14Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is Mariental?

Mariental sits at 24.6°S, 18.0°E, 0 m above sea level, in Namibia. The nearest listed city is Rehoboth, 171 km away.

RehobothKeetmanshoopWindhoekKatuturaGobabisOkahandjaLüderitzWalvis Bay

Topography around Mariental

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

Within 3 km, the terrain around Mariental has only modest variations in elevation — a maximum elevation change of 44 m around an average of 1,105 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 150 m; within 80 km, significant variations in elevation — a maximum elevation change of 454 m.

The land around Mariental is covered by bare terrain (35%) and grassland (20%) within 3 km, grassland (52%) and bare terrain (24%) within 16 km, and grassland (71%) within 80 km.

3 km
44 m
16 km
150 m
80 km
454 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwetland
January weather nearby: Rehoboth 171 km · Keetmanshoop 217 km · Windhoek 247 km · Katutura 251 km · Gobabis 263 km · Okahandja 314 km · Lüderitz 360 km · Walvis Bay 398 km

Namibia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / M
220 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$4,876
2025
Happiness
4.8 / 10
World Happiness, 2025
Homicide rate
11.2
per 100k, 2021
Road deaths
34.8
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Christian 98%unaffiliated 2%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 Mariental (-24.6271°, 17.9647°, elevation 0 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).