Tonalá weather in January

In January, Tonalá sees average daytime highs of 30°C and overnight lows near 21°C, with 1 mm of rain across 0.3 wet days and about 11.1 hours of daylight. It is the 10th-warmest and 12th-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 83% of the time in January, and the air most often feels humid.

Daylight stretches from about 11 h 06 min at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Tonalá's 2nd-clearest and 1st-windiest month. For the whole year in context, see Tonalá's year-round climate.

Daytime high
30°
10th warmest
Overnight low
21°
1st coldest
Rainfall
1 mm
0.3 wet days
Daylight
11 h 06 min
6:50 AM – 5:58 PM
Cloud cover
21%
2nd clearest
Wind
13 km/h
1st windiest
Solar energy
5.27 kWh/m²
Travel score
7.0
out of 10

Tonalá is municipal seat of Tonalá, State of Chiapas, Mexico.

Founded
1490

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 Tonalá reaches about 30°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°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
102921
112921
122921
132921
143021
153021
163020
173020
183020
193020
203020
213020
223020
233020
243021
253021
263021
273021
283021
293021
303021
313021

How January really feels in Tonalá

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.

Tonalá weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°10.311.17.0
Feb30° / 21°20.411.56.5
Mar31° / 22°61.411.95.7
Apr32° / 23°225.912.44.8
May31° / 24°13919.912.73.5
Jun30° / 24°32826.312.93.0
Jul30° / 24°24526.812.93.0
Aug30° / 24°28827.612.52.9
Sep29° / 24°34727.812.13.0
Oct29° / 23°17118.311.64.3
Nov30° / 22°364.211.26.1
Dec30° / 21°30.611.16.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 83% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 7% of January, with mostly cloudy or overcast conditions the remaining 10%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38812
48812
58911
69010
79010
89010
99010
10919
11919
12919
13919
14919
15919
16928
17928
18919
19919
20919
21919
22919
23919
24919
25919
26919
27919
28919
29919
30919
31928

Chance of precipitation in January

Any precipitation

Tonalá gets around 1 mm of rain over 0.3 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
182
191
201
211
221
231
241
251
261
271
281
291
301
311

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
131245391
231345381
331345381
431345381
531445381
631444381
741544370
841544360
941644360
1041744350
1141843340
1251843340
1351943330
1451943330
1551943330
1651943320
1752043320
1852044320
1952044310
2042045310
2142046310
2241947300
2331948300
2431849300
2531750300
2631651300
2731651300
2821553300
2921552310
3021453310
3121453310

Wind in January

Winds average 13 km/h in January, the windiest month of the year.

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

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light 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 11 h 06 min 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 12 minutes over January. Sunrise moves from 6:46 AM to 6:50 AM, and sunset from 5:50 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:465:50
211.16:475:50
311.16:475:51
411.16:475:52
511.16:485:52
611.16:485:53
711.16:485:53
811.16:495:54
911.16:495:54
1011.16:495:55
1111.16:495:56
1211.16:495:56
1311.16:505:57
1411.16:505:57
1511.16:505:58
1611.16:505:58
1711.16:505:59
1811.26:506:00
1911.26:506:00
2011.26:506:01
2111.26:516:01
2211.26:516:02
2311.26:516:02
2411.26:516:03
2511.26:516:04
2611.26:506:04
2711.26:506:05
2811.26:506:05
2911.36:506:06
3011.36:506:06
3111.36:506:07

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.27 kWh/m².

For context, solar energy here swings from a low near 5.01 kWh/m² to a high of 6.84 kWh/m² in April across the year — January's 5.27 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in January

Hazard calendar for Tonalá

In seasonPeak

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

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

Tonalá's monsoon runs June–October, 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 Tonalá?

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

7.0
Sightseeing
1st-best month of the year
9.2
Beach & pool
1st-best month of the year

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

What to pack for Tonalá in January

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

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

light clothessun protection

Sea temperature near Tonalá in January

The nearest coast averages about 28°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 27 km away) is warmest in August at about 31°C and coldest in February near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Warm
Mar28Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug31Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Tonalá in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tonalá peaks around June 17 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 highJun 17UV 13Dec 18UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr10Very high
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Tonalá 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 Tonalá is worst in May — around 27 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (January, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1426 µg/m³Jan 19 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar13Moderate
Apr22Moderate
May27Moderate
Jun18Moderate
Jul24Moderate
Aug19Moderate
Sep16Moderate
Oct12Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Tonalá?

Tonalá sits at 16.1°N, 93.8°W, 50 m above sea level, in Mexico. The nearest listed city is Arriaga, 22 km away.

Topography around Tonalá

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

Within 3 km, the terrain around Tonalá has significant variations in elevation — a maximum elevation change of 461 m around an average of 86 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,930 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,439 m.

The land around Tonalá is covered by trees (53%), grassland (26%) and artificial surfaces (20%) within 3 km, trees (54%) and grassland (36%) within 16 km, and trees (41%), water (28%) and grassland (25%) within 80 km.

3 km
461 m
16 km
1,930 m
80 km
2,439 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
January weather nearby: Arriaga 22 km · Villaflores 54 km · Cintalapa de Figueroa 66 km · Pijijiapan 74 km · Ocozocoautla de Espinosa 85 km · Suchiapa 92 km · Berriozábal 94 km · Tuxtla 100 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 Tonalá (16.0901°, -93.7546°, elevation 50 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).