Castaños weather in January

In January, Castaños sees average daytime highs of 19°C and overnight lows near 7°C, with 17 mm of precipitation across 3.6 wet days and about 10.5 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 19°C through the month. The sky is clear or mostly clear about 51% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of January to 10 h 42 min by month's end. Set against the rest of the year, January is Castaños's 9th-clearest and 10th-windiest month. For the whole year in context, see Castaños's year-round climate.

Daytime high: 19°; 12th warmest
Overnight low: 7°; 1st coldest
Precipitation: 17 mm; 3.6 wet days
Daylight: 10 h 30 min; 7:40 AM – 6:10 PM
Cloud cover: 44%; 9th clearest
Wind: 6 km/h; 10th windiest
Solar energy: 3.95 kWh/m²
Travel score: 7.2; out of 10

Castaños is municipal seat of Castaños, State of Coahuila, Mexico.

Founded: 1674

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

← December Castaños year-round climate February →Best places to visit in January

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 19°C through the month.

A typical January day in Castaños reaches about 19°C in the afternoon and slips back to 7°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 27°C. Set against its neighbours, January runs on par with December and about 3°C cooler than February.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	18	18	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	20	20	20
Avg low (°C)	6	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	8

	Avg high (°C)	Avg low (°C)
1	18	6
2	18	6
3	18	6
4	18	6
5	18	6
6	18	6
7	18	6
8	18	6
9	18	6
10	18	6
11	19	7
12	19	7
13	19	7
14	19	7
15	19	7
16	19	7
17	19	7
18	19	7
19	19	7
20	19	7
21	19	7
22	19	7
23	19	7
24	19	7
25	19	7
26	19	7
27	19	7
28	19	7
29	20	7
30	20	7
31	20	8

How January really feels in Castaños

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Castaños 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	19° / 7°	17	3.6	10.5	7.2
Feb	22° / 9°	12	3.1	11.1	8.0
Mar	25° / 13°	24	4.3	11.8	8.0
Apr	29° / 16°	27	5.8	12.6	6.2
May	32° / 20°	49	11.6	13.3	4.3
Jun	33° / 22°	56	10.2	13.7	3.8
Jul	32° / 22°	81	10.2	13.5	4.0
Aug	32° / 22°	64	9.2	12.9	4.3
Sep	28° / 19°	121	13	12.2	5.6
Oct	26° / 15°	39	6.7	11.4	7.6
Nov	22° / 11°	21	3.9	10.7	8.0
Dec	19° / 7°	19	3.4	10.3	7.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 38%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	61	60	61	61	61	61	61	61	61	61	61	62	62	62	62	62	63	63	62	62	63	63	63	63	64	63	63	63	62	62	62
Cloudier (%)	39	40	39	39	39	39	39	39	39	39	39	38	38	38	38	38	37	37	38	38	37	37	37	37	36	37	37	37	38	38	38

	Clearer (%)	Cloudier (%)
1	61	39
2	60	40
3	61	39
4	61	39
5	61	39
6	61	39
7	61	39
8	61	39
9	61	39
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	63	37
19	62	38
20	62	38
21	63	37
22	63	37
23	63	37
24	63	37
25	64	36
26	63	37
27	63	37
28	63	37
29	62	38
30	62	38
31	62	38

Chance of precipitation in January

Any precipitation

Castaños gets around 17 mm of rain and snow over 3.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 12% and peaks near 13% on the wettest days, and about 0 day brings snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	13	13	13	13	13	13	13

	Rain chance (%)
1	12
2	12
3	12
4	12
5	12
6	12
7	12
8	12
9	12
10	12
11	12
12	12
13	12
14	12
15	12
16	12
17	12
18	12
19	12
20	12
21	12
22	12
23	12
24	12
25	13
26	13
27	13
28	13
29	13
30	13
31	13

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	98	98	98	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	100	100	100	100	100	100	100	100	100	99	99
Comfortable (%)	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	1	1

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	99	1
31	99	1

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm
31	6	calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 18 min at the start of January to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over January. Sunrise moves from 7:39 AM to 7:37 AM, and sunset from 5:59 PM to 6:21 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.3	10.3	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.5	10.5	10.5	10.5	10.5	10.5	10.5	10.6	10.6	10.6	10.6	10.6	10.6	10.7	10.7	10.7	10.7	10.7
Sunrise (AM)	7:39	7:39	7:39	7:39	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:40	7:39	7:39	7:39	7:38	7:38	7:38	7:37	7:37
Sunset (PM)	5:59	6:00	6:00	6:01	6:02	6:02	6:03	6:04	6:04	6:05	6:06	6:07	6:07	6:08	6:09	6:10	6:10	6:11	6:12	6:13	6:13	6:14	6:15	6:16	6:16	6:17	6:18	6:19	6:20	6:20	6:21

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.3	7:39	5:59
2	10.3	7:39	6:00
3	10.4	7:39	6:00
4	10.4	7:39	6:01
5	10.4	7:40	6:02
6	10.4	7:40	6:02
7	10.4	7:40	6:03
8	10.4	7:40	6:04
9	10.4	7:40	6:04
10	10.4	7:40	6:05
11	10.4	7:40	6:06
12	10.4	7:40	6:07
13	10.4	7:40	6:07
14	10.5	7:40	6:08
15	10.5	7:40	6:09
16	10.5	7:40	6:10
17	10.5	7:40	6:10
18	10.5	7:40	6:11
19	10.5	7:40	6:12
20	10.5	7:40	6:13
21	10.6	7:40	6:13
22	10.6	7:40	6:14
23	10.6	7:40	6:15
24	10.6	7:39	6:16
25	10.6	7:39	6:16
26	10.6	7:39	6:17
27	10.7	7:38	6:18
28	10.7	7:38	6:19
29	10.7	7:38	6:20
30	10.7	7:37	6:20
31	10.7	7:37	6:21

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.95 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 7.06 kWh/m² in June across the year — January's 3.95 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.9	3.9	3.9	3.9	3.9	4.0	4.0	4.0	4.0	4.0	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.3	4.3	4.3
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.8	Moderate
2	3.8	Moderate
3	3.8	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.8	Moderate
7	3.8	Moderate
8	3.8	Moderate
9	3.8	Moderate
10	3.8	Moderate
11	3.9	Moderate
12	3.9	Moderate
13	3.9	Moderate
14	3.9	Moderate
15	3.9	Moderate
16	4.0	Moderate
17	4.0	Moderate
18	4.0	Moderate
19	4.0	Bright
20	4.0	Bright
21	4.1	Bright
22	4.1	Bright
23	4.1	Bright
24	4.1	Bright
25	4.2	Bright
26	4.2	Bright
27	4.2	Bright
28	4.2	Bright
29	4.3	Bright
30	4.3	Bright
31	4.3	Bright

Planning a trip in January

Hazard calendar for Castaños

In seasonPeak

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

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

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is January a good time to visit Castaños?

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

7.2

Sightseeing

6th-best month of the year

3.0

Beach & pool

12th-best month of the year

January is one of the better times to visit Castaños for general sightseeing.

What to pack for Castaños in January

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

In January, Castaños sees daytime highs around 19°C and nights near 7°C. Worth packing: a warm layer. About 4 days see rain.

a warm layer

UV index in Castaños in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Castaños peaks around July 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 5 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	6	7	9	11	12	12	12	11	11	8	6	5
Level	High	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	High	Moderate

	UV index (midday)	Level
Jan	6	High
Feb	7	Very high
Mar	9	Very high
Apr	11	Extreme
May	12	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	11	Extreme
Sep	11	Extreme
Oct	8	Very high
Nov	6	High
Dec	5	Moderate

Air quality in Castaños 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 Castaños is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (January, 9 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	9	9	9	11	15	15	18	15	14	11	10	9
Level	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	9	Good
Mar	9	Good
Apr	11	Good
May	15	Moderate
Jun	15	Moderate
Jul	18	Moderate
Aug	15	Moderate
Sep	14	Moderate
Oct	11	Good
Nov	10	Good
Dec	9	Good

Location & terrain

Where is Castaños?

Castaños sits at 26.8°N, 101.4°W, 756 m above sea level, in Mexico. The nearest listed city is Monclova, 13 km away.

Topography around Castaños

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

Within 3 km, the terrain around Castaños has only modest variations in elevation — a maximum elevation change of 240 m around an average of 777 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,344 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,316 m.

The land around Castaños is covered by shrubs (58%) and artificial surfaces (26%) within 3 km, shrubs (81%) within 16 km, and shrubs (88%) within 80 km.

3 km

240 m

shrubs 58%

16 km

1,344 m

shrubs 81%

80 km

2,316 m

shrubs 88%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← December Castaños year-round climate February →Best places to visit in January

January weather nearby: Monclova 13 km · Frontera 16 km · San Buenaventura 32 km · Ciudad Melchor Múzquiz 121 km · Sabinas 123 km · Palaú 123 km · Ciudad Sabinas Hidalgo 128 km · Nueva Rosita 129 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

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 Castaños (26.7893°, -101.4321°, elevation 756 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).

	Avg high (°C)	Avg low (°C)
1	18	6
2	18	6
3	18	6
4	18	6
5	18	6
6	18	6
7	18	6
8	18	6
9	18	6
10	18	6
11	19	7
12	19	7
13	19	7
14	19	7
15	19	7
16	19	7
17	19	7
18	19	7
19	19	7
20	19	7
21	19	7
22	19	7
23	19	7
24	19	7
25	19	7
26	19	7
27	19	7
28	19	7
29	20	7
30	20	7
31	20	8

	Clearer (%)	Cloudier (%)
1	61	39
2	60	40
3	61	39
4	61	39
5	61	39
6	61	39
7	61	39
8	61	39
9	61	39
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	63	37
19	62	38
20	62	38
21	63	37
22	63	37
23	63	37
24	63	37
25	64	36
26	63	37
27	63	37
28	63	37
29	62	38
30	62	38
31	62	38

	Rain chance (%)
1	12
2	12
3	12
4	12
5	12
6	12
7	12
8	12
9	12
10	12
11	12
12	12
13	12
14	12
15	12
16	12
17	12
18	12
19	12
20	12
21	12
22	12
23	12
24	12
25	13
26	13
27	13
28	13
29	13
30	13
31	13

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	99	1
31	99	1

	Avg high (°C)	Avg low (°C)
1	18	6
2	18	6
3	18	6
4	18	6
5	18	6
6	18	6
7	18	6
8	18	6
9	18	6
10	18	6
11	19	7
12	19	7
13	19	7
14	19	7
15	19	7
16	19	7
17	19	7
18	19	7
19	19	7
20	19	7
21	19	7
22	19	7
23	19	7
24	19	7
25	19	7
26	19	7
27	19	7
28	19	7
29	20	7
30	20	7
31	20	8

	Clearer (%)	Cloudier (%)
1	61	39
2	60	40
3	61	39
4	61	39
5	61	39
6	61	39
7	61	39
8	61	39
9	61	39
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	63	37
19	62	38
20	62	38
21	63	37
22	63	37
23	63	37
24	63	37
25	64	36
26	63	37
27	63	37
28	63	37
29	62	38
30	62	38
31	62	38

	Rain chance (%)
1	12
2	12
3	12
4	12
5	12
6	12
7	12
8	12
9	12
10	12
11	12
12	12
13	12
14	12
15	12
16	12
17	12
18	12
19	12
20	12
21	12
22	12
23	12
24	12
25	13
26	13
27	13
28	13
29	13
30	13
31	13

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	99	1
31	99	1

	Avg high (°C)	Avg low (°C)
1	18	6
2	18	6
3	18	6
4	18	6
5	18	6
6	18	6
7	18	6
8	18	6
9	18	6
10	18	6
11	19	7
12	19	7
13	19	7
14	19	7
15	19	7
16	19	7
17	19	7
18	19	7
19	19	7
20	19	7
21	19	7
22	19	7
23	19	7
24	19	7
25	19	7
26	19	7
27	19	7
28	19	7
29	20	7
30	20	7
31	20	8

	Clearer (%)	Cloudier (%)
1	61	39
2	60	40
3	61	39
4	61	39
5	61	39
6	61	39
7	61	39
8	61	39
9	61	39
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	63	37
19	62	38
20	62	38
21	63	37
22	63	37
23	63	37
24	63	37
25	64	36
26	63	37
27	63	37
28	63	37
29	62	38
30	62	38
31	62	38

	Rain chance (%)
1	12
2	12
3	12
4	12
5	12
6	12
7	12
8	12
9	12
10	12
11	12
12	12
13	12
14	12
15	12
16	12
17	12
18	12
19	12
20	12
21	12
22	12
23	12
24	12
25	13
26	13
27	13
28	13
29	13
30	13
31	13

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	99	1
31	99	1