Santo Domingo Tehuantepec weather in January

In January, Santo Domingo Tehuantepec sees average daytime highs of 30°C and overnight lows near 21°C, with 3 mm of rain across 0.8 wet days and about 11.1 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 81% of the time in January, and the air most often feels humid.

Daylight stretches from about 11 hours at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Santo Domingo Tehuantepec's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Santo Domingo Tehuantepec's year-round climate.

Daytime high
30°
12th warmest
Overnight low
21°
1st coldest
Rainfall
3 mm
0.8 wet days
Daylight
11 h 06 min
6:56 AM – 6:04 PM
Cloud cover
20%
2nd clearest
Wind
19 km/h
2nd windiest
Solar energy
5.38 kWh/m²
Travel score
6.5
out of 10

Santo Domingo Tehuantepec is municipal seat of Tehuantepec, State of Oaxaca, Mexico.

Density
70/km²
people per km²
Founded
1450

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 30°C through the month.

A typical January day in Santo Domingo Tehuantepec reaches about 30°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133021
143021
153020
163020
173020
183020
193020
203020
213020
223020
233021
243021
253021
263021
273021
283021
293121
303121
313121

How January really feels in Santo Domingo Tehuantepec

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.

Santo Domingo Tehuantepec weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°30.811.16.5
Feb31° / 21°30.811.55.7
Mar33° / 22°4111.94.8
Apr34° / 24°61.712.43.8
May34° / 25°679.912.83.0
Jun33° / 25°23317.8132.9
Jul34° / 25°12211.612.93.0
Aug34° / 25°16314.612.52.8
Sep32° / 25°20617.412.13.1
Oct32° / 24°848.611.64.1
Nov32° / 23°151.711.25.3
Dec31° / 21°40.8116.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 81% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 8% of January, with mostly cloudy or overcast conditions the remaining 11%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38812
48812
58911
68911
78911
88911
99010
109010
119010
129010
139010
149010
159010
169010
178911
188911
198911
208911
218812
228812
238812
248812
258812
268812
278812
288911
298911
308911
318911

Chance of precipitation in January

Any precipitation

Santo Domingo Tehuantepec gets around 3 mm of rain over 0.8 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 2% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
82
92
102
112
122
133
143
153
163
173
183
193
203
213
223
233
243
253
263
273
283
294
304
314

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172343234
272342234
382342234
482441234
582440234
682539234
792638234
892637234
992737235
10102736235
11102835225
12102835225
13112835225
14112835225
15112835225
16112835225
17112835215
18112736215
19112736215
20102736215
21102737206
22102737206
2392738206
2492638207
2592639207
2682540207
2782540207
2872541208
2972541208
3072442208
3162442208

Wind in January

Winds average 19 km/h in January.

Across January, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in January

DaylightNight

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

Days grow by about 18 minutes over January. Sunrise moves from 6:53 AM to 6:56 AM, and sunset from 5:55 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:535:55
211.06:535:56
311.16:545:57
411.16:545:57
511.16:545:58
611.16:545:58
711.16:555:59
811.16:555:59
911.16:556:00
1011.16:556:01
1111.16:566:01
1211.16:566:02
1311.16:566:02
1411.16:566:03
1511.16:566:03
1611.16:566:04
1711.16:576:05
1811.16:576:05
1911.16:576:06
2011.26:576:06
2111.26:576:07
2211.26:576:07
2311.26:576:08
2411.26:576:09
2511.26:576:09
2611.26:576:10
2711.26:576:10
2811.26:576:11
2911.26:576:11
3011.36:566:12
3111.36:566:12

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.38 kWh/m².

For context, solar energy here swings from a low near 5.2 kWh/m² to a high of 7.02 kWh/m² in April across the year — January's 5.38 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.7Bright
Planning a trip in January

Hazard calendar for Santo Domingo Tehuantepec

In seasonPeak

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

Santo Domingo Tehuantepec sits in the Atlantic hurricane belt; the season peaks August–October.

Santo Domingo Tehuantepec's monsoon runs June–September, when most of the year's rain falls.

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

Is January a good time to visit Santo Domingo Tehuantepec?

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

6.5
Sightseeing
1st-best month of the year
9.0
Beach & pool
1st-best month of the year

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

What to pack for Santo Domingo Tehuantepec in January

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

In January, Santo Domingo Tehuantepec sees daytime highs around 30°C and nights near 21°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Santo Domingo Tehuantepec in January

The nearest coast averages about 26°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 25 km away) is warmest in August at about 30°C and coldest in January near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Tropical
May29Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov27Warm
Dec27Warm

UV index in Santo Domingo Tehuantepec in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santo Domingo Tehuantepec peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 13UV 13Dec 18UV 8
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Santo Domingo Tehuantepec 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 Santo Domingo Tehuantepec is worst in May — around 32 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (November, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1531 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar14Moderate
Apr25Moderate
May32Moderate
Jun21Moderate
Jul27Moderate
Aug20Moderate
Sep18Moderate
Oct11Good
Nov8Good
Dec8Good
Location & terrain

Where is Santo Domingo Tehuantepec?

Santo Domingo Tehuantepec sits at 16.3°N, 95.2°W, 44 m above sea level, in Mexico. The nearest listed city is Salina Cruz, 17 km away.

Topography around Santo Domingo Tehuantepec

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

Within 3 km, the terrain around Santo Domingo Tehuantepec has only modest variations in elevation — a maximum elevation change of 156 m around an average of 45 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,049 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,818 m.

The land around Santo Domingo Tehuantepec is covered by artificial surfaces (33%) and grassland (23%) within 3 km, trees (40%) and grassland (20%) within 16 km, and trees (40%) and water (28%) within 80 km.

3 km
156 m
16 km
1,049 m
80 km
2,818 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Salina Cruz 17 km · Heroica Ciudad de Juchitán de Zaragoza 26 km · Ixtepec 30 km · Matías Romero Avendaño 65 km · Crucecita 114 km · Arriaga 144 km · Miahuatlán de Porfirio Díaz 145 km · Tonalá 161 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 Santo Domingo Tehuantepec (16.3246°, -95.241°, elevation 44 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).