Castaños weather in May
In May, Castaños sees average daytime highs of 32°C and overnight lows near 20°C, with 49 mm of rain across 11.6 wet days and about 13.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.
Highs climb over the month, from about 31°C in the first days to 32°C by the end. The sky is clear or mostly clear about 55% of the time in May, and the air most often feels humid.
Daylight stretches from about 13 hours at the start of May to 13 h 30 min by month's end. Set against the rest of the year, May is Castaños's 4th-clearest and 4th-windiest month. For the whole year in context, see Castaños's year-round climate.
- Daytime high
- 32°
- 4th warmest
- Overnight low
- 20°
- 9th coldest
- Rainfall
- 49 mm
- 11.6 wet days
- Daylight
- 13 h 18 min
- 6:03 AM – 7:21 PM
- Cloud cover
- 40%
- 4th clearest
- Wind
- 8 km/h
- 4th windiest
- Solar energy
- 6.99 kWh/m²
- Travel score
- 4.3
- 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.
Temperature in May
Highs climb over the month, from about 31°C in the first days to 32°C by the end.
A typical May day in Castaños reaches about 32°C in the afternoon and slips back to 20°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 37°C. Set against its neighbours, May runs about 3°C warmer than April and about 1°C cooler than June.
| 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) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 18 |
| 2 | 31 | 18 |
| 3 | 31 | 18 |
| 4 | 31 | 18 |
| 5 | 31 | 19 |
| 6 | 31 | 19 |
| 7 | 31 | 19 |
| 8 | 31 | 19 |
| 9 | 31 | 19 |
| 10 | 31 | 19 |
| 11 | 31 | 19 |
| 12 | 32 | 19 |
| 13 | 32 | 19 |
| 14 | 32 | 19 |
| 15 | 32 | 19 |
| 16 | 32 | 20 |
| 17 | 32 | 20 |
| 18 | 32 | 20 |
| 19 | 32 | 20 |
| 20 | 32 | 20 |
| 21 | 32 | 20 |
| 22 | 32 | 20 |
| 23 | 32 | 20 |
| 24 | 32 | 20 |
| 25 | 32 | 20 |
| 26 | 32 | 20 |
| 27 | 32 | 21 |
| 28 | 32 | 21 |
| 29 | 32 | 21 |
| 30 | 33 | 21 |
| 31 | 33 | 21 |
How May really feels in Castaños
Once humidity and wind are folded in, May averages 10 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Castaños weather by month
How May compares with the rest of the year at a glance. May is the 4th-warmest and 5th-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 May
The sky is clear or mostly clear about 55% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 26%.
| 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 (%) | 69 | 69 | 70 | 70 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 73 | 74 | 74 | 74 | 74 | 76 | 76 | 76 | 77 | 77 | 79 | 79 | 80 | 80 | 80 | 81 |
| Cloudier (%) | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 24 | 24 | 24 | 23 | 23 | 21 | 21 | 20 | 20 | 20 | 19 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 69 | 31 |
| 2 | 69 | 31 |
| 3 | 70 | 30 |
| 4 | 70 | 30 |
| 5 | 71 | 29 |
| 6 | 71 | 29 |
| 7 | 71 | 29 |
| 8 | 71 | 29 |
| 9 | 72 | 28 |
| 10 | 72 | 28 |
| 11 | 72 | 28 |
| 12 | 72 | 28 |
| 13 | 72 | 28 |
| 14 | 73 | 27 |
| 15 | 73 | 27 |
| 16 | 73 | 27 |
| 17 | 74 | 26 |
| 18 | 74 | 26 |
| 19 | 74 | 26 |
| 20 | 74 | 26 |
| 21 | 76 | 24 |
| 22 | 76 | 24 |
| 23 | 76 | 24 |
| 24 | 77 | 23 |
| 25 | 77 | 23 |
| 26 | 79 | 21 |
| 27 | 79 | 21 |
| 28 | 80 | 20 |
| 29 | 80 | 20 |
| 30 | 80 | 20 |
| 31 | 81 | 19 |
Chance of precipitation in May
Castaños gets around 49 mm of rain over 11.6 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 36% and peaks near 40% on the wettest days. The odds climb toward the end of the month.
| 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 (%) | 26 | 27 | 28 | 29 | 30 | 32 | 33 | 34 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 37 | 38 | 38 | 38 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 39 | 39 |
| Rain chance (%) | |
|---|---|
| 1 | 26 |
| 2 | 27 |
| 3 | 28 |
| 4 | 29 |
| 5 | 30 |
| 6 | 32 |
| 7 | 33 |
| 8 | 34 |
| 9 | 35 |
| 10 | 35 |
| 11 | 36 |
| 12 | 36 |
| 13 | 36 |
| 14 | 37 |
| 15 | 37 |
| 16 | 37 |
| 17 | 38 |
| 18 | 38 |
| 19 | 38 |
| 20 | 39 |
| 21 | 39 |
| 22 | 39 |
| 23 | 39 |
| 24 | 39 |
| 25 | 40 |
| 26 | 40 |
| 27 | 40 |
| 28 | 40 |
| 29 | 40 |
| 30 | 39 |
| 31 | 39 |
Humidity in May
Most of May feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the humid band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.
| 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 (%) | 51 | 48 | 46 | 44 | 42 | 40 | 38 | 37 | 35 | 34 | 32 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 20 | 19 | 18 | 16 | 15 | 14 | 13 | 12 | 12 |
| Comfortable (%) | 25 | 26 | 27 | 27 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 27 | 26 | 26 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 21 |
| Humid (%) | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 31 | 32 | 32 | 32 | 33 | 33 | 34 | 35 | 36 | 36 | 37 | 38 | 39 | 39 | 40 | 40 | 41 | 41 | 41 | 42 |
| Muggy (%) | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 23 | 24 | 24 | 25 | 26 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 51 | 25 | 21 | 3 |
| 2 | 48 | 26 | 22 | 3 |
| 3 | 46 | 27 | 23 | 4 |
| 4 | 44 | 27 | 24 | 4 |
| 5 | 42 | 28 | 25 | 5 |
| 6 | 40 | 29 | 26 | 5 |
| 7 | 38 | 29 | 27 | 5 |
| 8 | 37 | 29 | 28 | 6 |
| 9 | 35 | 30 | 29 | 6 |
| 10 | 34 | 30 | 30 | 7 |
| 11 | 32 | 30 | 31 | 7 |
| 12 | 32 | 30 | 31 | 7 |
| 13 | 31 | 30 | 32 | 8 |
| 14 | 30 | 30 | 32 | 9 |
| 15 | 29 | 29 | 32 | 10 |
| 16 | 28 | 29 | 33 | 11 |
| 17 | 27 | 28 | 33 | 12 |
| 18 | 26 | 27 | 34 | 13 |
| 19 | 25 | 26 | 35 | 14 |
| 20 | 24 | 26 | 36 | 15 |
| 21 | 23 | 25 | 36 | 16 |
| 22 | 22 | 24 | 37 | 17 |
| 23 | 20 | 24 | 38 | 18 |
| 24 | 19 | 23 | 39 | 19 |
| 25 | 18 | 23 | 39 | 20 |
| 26 | 16 | 22 | 40 | 21 |
| 27 | 15 | 22 | 40 | 23 |
| 28 | 14 | 22 | 41 | 24 |
| 29 | 13 | 21 | 41 | 24 |
| 30 | 12 | 21 | 41 | 25 |
| 31 | 12 | 21 | 42 | 26 |
Wind in May
Winds average 8 km/h in May.
Across May, daily wind ranges from about 8 km/h on the calmest days to 8 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) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
| 31 | 8 | calm |
Sunrise & sunset in May
Daylight runs from about 13 hours at the start of May to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 30 minutes over May. Sunrise moves from 6:13 AM to 5:57 AM, and sunset from 7:13 PM to 7:29 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) | 13.0 | 13.0 | 13.0 | 13.1 | 13.1 | 13.1 | 13.1 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 |
| Sunrise (AM) | 6:13 | 6:12 | 6:11 | 6:11 | 6:10 | 6:09 | 6:08 | 6:08 | 6:07 | 6:06 | 6:06 | 6:05 | 6:04 | 6:04 | 6:03 | 6:03 | 6:02 | 6:02 | 6:01 | 6:01 | 6:00 | 6:00 | 5:59 | 5:59 | 5:58 | 5:58 | 5:58 | 5:58 | 5:57 | 5:57 | 5:57 |
| Sunset (PM) | 7:13 | 7:13 | 7:14 | 7:15 | 7:15 | 7:16 | 7:16 | 7:17 | 7:17 | 7:18 | 7:19 | 7:19 | 7:20 | 7:20 | 7:21 | 7:21 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 | 7:25 | 7:25 | 7:26 | 7:26 | 7:27 | 7:27 | 7:28 | 7:28 | 7:29 | 7:29 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 6:13 | 7:13 |
| 2 | 13.0 | 6:12 | 7:13 |
| 3 | 13.0 | 6:11 | 7:14 |
| 4 | 13.1 | 6:11 | 7:15 |
| 5 | 13.1 | 6:10 | 7:15 |
| 6 | 13.1 | 6:09 | 7:16 |
| 7 | 13.1 | 6:08 | 7:16 |
| 8 | 13.2 | 6:08 | 7:17 |
| 9 | 13.2 | 6:07 | 7:17 |
| 10 | 13.2 | 6:06 | 7:18 |
| 11 | 13.2 | 6:06 | 7:19 |
| 12 | 13.2 | 6:05 | 7:19 |
| 13 | 13.3 | 6:04 | 7:20 |
| 14 | 13.3 | 6:04 | 7:20 |
| 15 | 13.3 | 6:03 | 7:21 |
| 16 | 13.3 | 6:03 | 7:21 |
| 17 | 13.3 | 6:02 | 7:22 |
| 18 | 13.4 | 6:02 | 7:23 |
| 19 | 13.4 | 6:01 | 7:23 |
| 20 | 13.4 | 6:01 | 7:24 |
| 21 | 13.4 | 6:00 | 7:24 |
| 22 | 13.4 | 6:00 | 7:25 |
| 23 | 13.4 | 5:59 | 7:25 |
| 24 | 13.4 | 5:59 | 7:26 |
| 25 | 13.5 | 5:58 | 7:26 |
| 26 | 13.5 | 5:58 | 7:27 |
| 27 | 13.5 | 5:58 | 7:27 |
| 28 | 13.5 | 5:58 | 7:28 |
| 29 | 13.5 | 5:57 | 7:28 |
| 30 | 13.5 | 5:57 | 7:29 |
| 31 | 13.5 | 5:57 | 7:29 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.99 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 — May's 6.99 kWh/m² sits near the top of that range.
| 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) | 6.9 | 6.9 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.9 | Intense |
| 2 | 6.9 | Intense |
| 3 | 7.0 | Intense |
| 4 | 7.0 | Intense |
| 5 | 7.0 | Intense |
| 6 | 7.0 | Intense |
| 7 | 7.0 | Intense |
| 8 | 7.0 | Intense |
| 9 | 7.0 | Intense |
| 10 | 7.0 | Intense |
| 11 | 7.0 | Intense |
| 12 | 7.0 | Intense |
| 13 | 7.0 | Intense |
| 14 | 7.0 | Intense |
| 15 | 7.0 | Intense |
| 16 | 7.0 | Intense |
| 17 | 7.0 | Intense |
| 18 | 7.0 | Intense |
| 19 | 7.0 | Intense |
| 20 | 7.0 | Intense |
| 21 | 7.0 | Intense |
| 22 | 7.0 | Intense |
| 23 | 7.0 | Intense |
| 24 | 7.0 | Intense |
| 25 | 7.0 | Intense |
| 26 | 7.1 | Intense |
| 27 | 7.1 | Intense |
| 28 | 7.1 | Intense |
| 29 | 7.1 | Intense |
| 30 | 7.1 | Intense |
| 31 | 7.1 | Intense |
Hazard calendar for Castaños
None of Castaños's seasonal hazards are active in May. 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.
Is May a good time to visit Castaños?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Castaños for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Castaños in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Castaños sees daytime highs around 32°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.
UV index in Castaños in May
Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). 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 May
Average fine-particle pollution (PM2.5) through the year — so you can see where May 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 |
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.
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).