Umán weather in January

In January, Umán sees average daytime highs of 29°C and overnight lows near 19°C, with 20 mm of rain across 4.3 wet days and about 10.9 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 46% of the time in January, and the air most often feels muggy.

Daylight stretches from about 10 h 48 min at the start of January to 11 hours by month's end. Set against the rest of the year, January is Umán's 5th-clearest and 5th-windiest month. For the whole year in context, see Umán's year-round climate.

Daytime high
29°
12th warmest
Overnight low
19°
1st coldest
Rainfall
20 mm
4.3 wet days
Daylight
10 h 54 min
6:42 AM – 5:34 PM
Cloud cover
46%
5th clearest
Wind
11 km/h
5th windiest
Solar energy
4.09 kWh/m²
Travel score
6.4
out of 10

Umán is city in Yucatán, Mexico.

Founded
1921

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 29°C through the month.

A typical January day in Umán reaches about 29°C in the afternoon and slips back to 19°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, January runs on par with December and about 2°C cooler than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12919
22919
32919
42919
52919
62919
72919
82919
92919
102919
112919
122919
132919
142918
152918
162918
172918
182918
192918
202918
212918
222918
232918
242919
252919
262919
272919
282919
292919
302919
313019

How January really feels in Umán

Once humidity and wind are folded in, January averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Umán weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 19°204.310.96.4
Feb31° / 19°153.311.35.6
Mar33° / 21°14311.94.3
Apr35° / 22°224.312.53.0
May36° / 24°507.8132.4
Jun35° / 25°12316.513.22.3
Jul34° / 24°8215.113.12.5
Aug34° / 24°991712.72.4
Sep33° / 24°13919.612.12.6
Oct32° / 23°8813.911.53.9
Nov30° / 21°306.4115.5
Dec29° / 19°234.310.86.3

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 23% of January, with mostly cloudy or overcast conditions the remaining 32%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26832
36832
46832
56832
66832
76832
86832
96832
106832
116931
126931
136931
146931
156931
166931
176832
186832
196832
206832
216832
226832
236733
246733
256733
266733
276733
286832
296832
306832
316832

Chance of precipitation in January

Any precipitation

Umán gets around 20 mm of rain over 4.3 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 14% and peaks near 16% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
213
313
413
513
614
714
814
914
1014
1114
1214
1313
1413
1513
1613
1713
1813
1913
2013
2113
2213
2313
2414
2514
2614
2714
2815
2915
3016
3116

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1713224315
2713224315
3813224314
4814224214
5814224214
6814224213
7915224213
8915224212
9916224112
10917224111
11917234110
1291823419
1391823419
1491923418
1591923418
1682023418
1782023417
1882123417
1972124417
2072224417
2172225416
2262225416
2362225416
2462126416
2552126426
2652026436
2752026437
2851926447
2951825447
3051825457
3151825458

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 48 min at the start of January to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:40 AM to 6:41 AM, and sunset from 5:25 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:405:25
210.86:405:25
310.86:405:26
410.86:415:26
510.86:415:27
610.86:415:28
710.86:415:28
810.86:415:29
910.86:425:30
1010.86:425:30
1110.86:425:31
1210.86:425:31
1310.86:425:32
1410.86:425:33
1510.86:425:33
1610.96:425:34
1710.96:435:35
1810.96:435:35
1910.96:435:36
2010.96:435:37
2110.96:435:37
2210.96:425:38
2310.96:425:39
2410.96:425:39
2511.06:425:40
2611.06:425:41
2711.06:425:41
2811.06:425:42
2911.06:415:42
3011.06:415:43
3111.06:415:44

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.09 kWh/m².

For context, solar energy here swings from a low near 3.95 kWh/m² to a high of 6.73 kWh/m² in May across the year — January's 4.09 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Moderate
104.0Bright
114.0Bright
124.0Bright
134.0Bright
144.0Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in January

Hazard calendar for Umán

In seasonPeak

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

Umán sits in the Atlantic hurricane belt; the season peaks August–October.

Umán's rainy season runs June–October, when most of the year's rain falls.

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

Is January a good time to visit Umán?

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

6.4
Sightseeing
1st-best month of the year
8.1
Beach & pool
1st-best month of the year

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

What to pack for Umán in January

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

In January, Umán sees daytime highs around 29°C and nights near 19°C. Pack light clothes. About 4 days see rain.

light clothes

Sea temperature near Umán in January

The nearest coast averages about 24°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 48 km away) is warmest in September at about 28°C and coldest in January near 24°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Refreshing
Feb24Refreshing
Mar25Warm
Apr26Warm
May27Warm
Jun27Warm
Jul27Warm
Aug28Warm
Sep28Tropical
Oct28Warm
Nov26Warm
Dec25Warm

UV index in Umán in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Umán peaks around June 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighJun 16UV 13Dec 17UV 6
UV index (midday)Level
Jan7High
Feb10Very high
Mar11Extreme
Apr12Extreme
May11Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov7High
Dec6High

Air quality in Umán 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 Umán is worst in June — around 26 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2025 µg/m³Nov 228 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr21Moderate
May20Moderate
Jun26Moderate
Jul24Moderate
Aug19Moderate
Sep15Moderate
Oct10Good
Nov8Good
Dec8Good
Location & terrain

Where is Umán?

Umán sits at 20.9°N, 89.7°W, 15 m above sea level, in Mexico. The nearest listed city is Merida, 16 km away.

Topography around Umán

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

Within 3 km, the terrain around Umán has only modest variations in elevation — a maximum elevation change of 13 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 33 m; within 80 km, only modest variations in elevation — a maximum elevation change of 152 m.

The land around Umán is covered by trees (69%) within 3 km, trees (79%) within 16 km, and trees (64%) and water (24%) within 80 km.

3 km
13 m
16 km
33 m
80 km
152 m
treesshrubsgrasslandartificial surfaceswatermangroves
January weather nearby: Merida 16 km · Hunucmá 20 km · Kanasín 21 km · Progreso 45 km · Motul 54 km · Ticul 58 km · Oxkutzkab 72 km · Izamal 76 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 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 Umán (20.8815°, -89.748°, elevation 15 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).