Tonalá weather in September
In September, Tonalá sees average daytime highs of 29°C and overnight lows near 24°C, with 347 mm of rain across 27.8 wet days and about 12.1 hours of daylight. It is the 12th-warmest and 1st-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 5% of the time in September, and the air most often feels oppressive.
Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Tonalá's 12th-clearest and 10th-windiest month. For the whole year in context, see Tonalá's year-round climate.
- Daytime high
- 29°
- 12th warmest
- Overnight low
- 24°
- 8th coldest
- Rainfall
- 347 mm
- 27.8 wet days
- Daylight
- 12 h 06 min
- 6:07 AM – 6:12 PM
- Cloud cover
- 84%
- 12th clearest
- Wind
- 5 km/h
- 10th windiest
- Solar energy
- 5.01 kWh/m²
- Travel score
- 3.0
- 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 September
Day-to-day highs hold fairly steady near 29°C through the month.
A typical September day in Tonalá reaches about 29°C in the afternoon and slips back to 24°C overnight — a 6°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, September runs on par with August and on par with October.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 24 |
| 2 | 29 | 24 |
| 3 | 29 | 24 |
| 4 | 29 | 24 |
| 5 | 29 | 24 |
| 6 | 29 | 24 |
| 7 | 29 | 24 |
| 8 | 29 | 24 |
| 9 | 29 | 24 |
| 10 | 29 | 24 |
| 11 | 29 | 24 |
| 12 | 29 | 24 |
| 13 | 29 | 24 |
| 14 | 29 | 24 |
| 15 | 29 | 24 |
| 16 | 29 | 24 |
| 17 | 29 | 24 |
| 18 | 29 | 24 |
| 19 | 29 | 24 |
| 20 | 29 | 24 |
| 21 | 29 | 24 |
| 22 | 29 | 24 |
| 23 | 29 | 24 |
| 24 | 29 | 24 |
| 25 | 29 | 24 |
| 26 | 29 | 24 |
| 27 | 29 | 24 |
| 28 | 29 | 24 |
| 29 | 29 | 24 |
| 30 | 29 | 24 |
How September really feels in Tonalá
Once humidity and wind are folded in, September averages 30 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 September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Tonalá weather by month
How September compares with the rest of the year at a glance. September is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 21° | 1 | 0.3 | 11.1 | 7.0 |
| Feb | 30° / 21° | 2 | 0.4 | 11.5 | 6.5 |
| Mar | 31° / 22° | 6 | 1.4 | 11.9 | 5.7 |
| Apr | 32° / 23° | 22 | 5.9 | 12.4 | 4.8 |
| May | 31° / 24° | 139 | 19.9 | 12.7 | 3.5 |
| Jun | 30° / 24° | 328 | 26.3 | 12.9 | 3.0 |
| Jul | 30° / 24° | 245 | 26.8 | 12.9 | 3.0 |
| Aug | 30° / 24° | 288 | 27.6 | 12.5 | 2.9 |
| Sep | 29° / 24° | 347 | 27.8 | 12.1 | 3.0 |
| Oct | 29° / 23° | 171 | 18.3 | 11.6 | 4.3 |
| Nov | 30° / 22° | 36 | 4.2 | 11.2 | 6.1 |
| Dec | 30° / 21° | 3 | 0.6 | 11.1 | 6.8 |
Cloud cover in September
The sky is clear or mostly clear about 5% of the time in September, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 87%.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 14 | 14 | 14 | 16 | 17 | 18 |
| Cloudier (%) | 84 | 84 | 85 | 86 | 86 | 86 | 86 | 86 | 86 | 86 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 89 | 89 | 89 | 89 | 89 | 89 | 88 | 86 | 86 | 86 | 84 | 83 | 82 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 16 | 84 |
| 2 | 16 | 84 |
| 3 | 15 | 85 |
| 4 | 14 | 86 |
| 5 | 14 | 86 |
| 6 | 14 | 86 |
| 7 | 14 | 86 |
| 8 | 14 | 86 |
| 9 | 14 | 86 |
| 10 | 14 | 86 |
| 11 | 12 | 88 |
| 12 | 12 | 88 |
| 13 | 12 | 88 |
| 14 | 12 | 88 |
| 15 | 12 | 88 |
| 16 | 12 | 88 |
| 17 | 12 | 88 |
| 18 | 11 | 89 |
| 19 | 11 | 89 |
| 20 | 11 | 89 |
| 21 | 11 | 89 |
| 22 | 11 | 89 |
| 23 | 11 | 89 |
| 24 | 12 | 88 |
| 25 | 14 | 86 |
| 26 | 14 | 86 |
| 27 | 14 | 86 |
| 28 | 16 | 84 |
| 29 | 17 | 83 |
| 30 | 18 | 82 |
Chance of precipitation in September
Tonalá gets around 347 mm of rain over 27.8 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 91% and peaks near 93% on the wettest days.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 91 | 91 | 91 | 91 | 92 | 92 | 92 | 92 | 92 | 93 | 93 | 93 | 93 | 93 | 93 | 92 | 92 | 91 | 90 | 89 | 87 | 86 | 85 |
| Rain chance (%) | |
|---|---|
| 1 | 92 |
| 2 | 92 |
| 3 | 92 |
| 4 | 92 |
| 5 | 92 |
| 6 | 92 |
| 7 | 92 |
| 8 | 91 |
| 9 | 91 |
| 10 | 91 |
| 11 | 91 |
| 12 | 92 |
| 13 | 92 |
| 14 | 92 |
| 15 | 92 |
| 16 | 92 |
| 17 | 93 |
| 18 | 93 |
| 19 | 93 |
| 20 | 93 |
| 21 | 93 |
| 22 | 93 |
| 23 | 92 |
| 24 | 92 |
| 25 | 91 |
| 26 | 90 |
| 27 | 89 |
| 28 | 87 |
| 29 | 86 |
| 30 | 85 |
Humidity in September
Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the oppressive band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| Muggy (%) | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| Oppressive (%) | 99 | 99 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 97 | 97 | 97 | 97 | 97 | 97 | 97 | 97 | 97 | 96 | 96 | 95 | 95 | 94 | 93 | 91 | 90 | 89 | 88 | 87 |
| Miserable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 0 | 0 | 99 | 1 |
| 2 | 0 | 0 | 99 | 1 |
| 3 | 0 | 1 | 98 | 1 |
| 4 | 0 | 1 | 98 | 1 |
| 5 | 0 | 1 | 98 | 1 |
| 6 | 0 | 1 | 98 | 1 |
| 7 | 0 | 1 | 98 | 1 |
| 8 | 0 | 1 | 98 | 1 |
| 9 | 0 | 1 | 98 | 1 |
| 10 | 0 | 1 | 98 | 1 |
| 11 | 0 | 1 | 97 | 2 |
| 12 | 0 | 1 | 97 | 2 |
| 13 | 0 | 1 | 97 | 2 |
| 14 | 0 | 1 | 97 | 2 |
| 15 | 0 | 1 | 97 | 2 |
| 16 | 0 | 1 | 97 | 2 |
| 17 | 0 | 1 | 97 | 2 |
| 18 | 0 | 1 | 97 | 2 |
| 19 | 0 | 1 | 97 | 2 |
| 20 | 0 | 2 | 96 | 2 |
| 21 | 0 | 2 | 96 | 2 |
| 22 | 0 | 3 | 95 | 2 |
| 23 | 0 | 4 | 95 | 1 |
| 24 | 0 | 5 | 94 | 1 |
| 25 | 0 | 6 | 93 | 1 |
| 26 | 1 | 7 | 91 | 1 |
| 27 | 1 | 8 | 90 | 1 |
| 28 | 1 | 9 | 89 | 1 |
| 29 | 1 | 10 | 88 | 1 |
| 30 | 1 | 11 | 87 | 1 |
Wind in September
Winds average 5 km/h in September.
Across September, daily wind ranges from about 5 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | 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 |
Sunrise & sunset in September
Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 24 minutes over September. Sunrise moves from 6:05 AM to 6:08 AM, and sunset from 6:24 PM to 6:00 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 |
| Sunrise (AM) | 6:05 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 |
| Sunset (PM) | 6:24 | 6:23 | 6:23 | 6:22 | 6:21 | 6:20 | 6:19 | 6:19 | 6:18 | 6:17 | 6:16 | 6:15 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:10 | 6:09 | 6:08 | 6:07 | 6:06 | 6:05 | 6:05 | 6:04 | 6:03 | 6:02 | 6:01 | 6:00 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 6:05 | 6:24 |
| 2 | 12.3 | 6:05 | 6:23 |
| 3 | 12.3 | 6:05 | 6:23 |
| 4 | 12.3 | 6:06 | 6:22 |
| 5 | 12.3 | 6:06 | 6:21 |
| 6 | 12.2 | 6:06 | 6:20 |
| 7 | 12.2 | 6:06 | 6:19 |
| 8 | 12.2 | 6:06 | 6:19 |
| 9 | 12.2 | 6:06 | 6:18 |
| 10 | 12.2 | 6:06 | 6:17 |
| 11 | 12.2 | 6:06 | 6:16 |
| 12 | 12.2 | 6:06 | 6:15 |
| 13 | 12.1 | 6:06 | 6:15 |
| 14 | 12.1 | 6:06 | 6:14 |
| 15 | 12.1 | 6:07 | 6:13 |
| 16 | 12.1 | 6:07 | 6:12 |
| 17 | 12.1 | 6:07 | 6:11 |
| 18 | 12.1 | 6:07 | 6:10 |
| 19 | 12.0 | 6:07 | 6:10 |
| 20 | 12.0 | 6:07 | 6:09 |
| 21 | 12.0 | 6:07 | 6:08 |
| 22 | 12.0 | 6:07 | 6:07 |
| 23 | 12.0 | 6:07 | 6:06 |
| 24 | 12.0 | 6:07 | 6:05 |
| 25 | 11.9 | 6:08 | 6:05 |
| 26 | 11.9 | 6:08 | 6:04 |
| 27 | 11.9 | 6:08 | 6:03 |
| 28 | 11.9 | 6:08 | 6:02 |
| 29 | 11.9 | 6:08 | 6:01 |
| 30 | 11.9 | 6:08 | 6:00 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.01 kWh/m² — the year's lowest.
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 — September's 5.01 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.2 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.2 | Bright |
| 11 | 5.2 | Bright |
| 12 | 5.1 | Bright |
| 13 | 5.1 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.0 | Bright |
| 17 | 5.0 | Bright |
| 18 | 5.0 | Bright |
| 19 | 5.0 | Bright |
| 20 | 4.9 | Bright |
| 21 | 4.9 | Bright |
| 22 | 4.9 | Bright |
| 23 | 4.9 | Bright |
| 24 | 4.8 | Bright |
| 25 | 4.8 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.8 | Bright |
Hazard calendar for Tonalá
In September, Tonalá sits inside its atlantic hurricane and monsoon season. The full year is below, with each hazard's peak months called out.
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.
Is September a good time to visit Tonalá?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Tonalá.
What to pack for Tonalá in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Tonalá sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.
Sea temperature near Tonalá in September
The nearest coast averages about 30°C in September — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 28 | 29 | 30 | 30 | 30 | 31 | 30 | 29 | 29 | 29 |
| Comfort | Tropical | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Warm |
| Mar | 28 | Tropical |
| Apr | 29 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 31 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Tonalá in September
Clear-sky midday UV in September 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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 12 | 13 | 10 | 12 | 13 | 12 | 12 | 12 | 11 | 9 | 8 |
| Level | Very high | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in Tonalá in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 9 | 13 | 22 | 27 | 18 | 24 | 19 | 16 | 12 | 10 | 9 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 13 | Moderate |
| Apr | 22 | Moderate |
| May | 27 | Moderate |
| Jun | 18 | Moderate |
| Jul | 24 | Moderate |
| Aug | 19 | Moderate |
| Sep | 16 | Moderate |
| Oct | 12 | Moderate |
| Nov | 10 | Good |
| Dec | 9 | Good |
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.
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 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).