Chetumal weather in December
In December, Chetumal sees average daytime highs of 28°C and overnight lows near 22°C, with 55 mm of rain across 13.2 wet days and about 10.9 hours of daylight. It is the 11th-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 45% of the time in December, and the air most often feels oppressive.
Daylight stretches from about 11 hours at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is Chetumal's 5th-clearest and 9th-windiest month. For the whole year in context, see Chetumal's year-round climate.
- Daytime high
- 28°
- 11th warmest
- Overnight low
- 22°
- 2nd coldest
- Rainfall
- 55 mm
- 13.2 wet days
- Daylight
- 10 h 54 min
- 6:23 AM – 5:16 PM
- Cloud cover
- 47%
- 5th clearest
- Wind
- 12 km/h
- 9th windiest
- Solar energy
- 3.85 kWh/m²
- Travel score
- 6.2
- out of 10
Chetumal is capital of the State of Quintana Roo, Mexico.
- Founded
- 1898
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 28°C through the month.
A typical December day in Chetumal reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.
| 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) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 22 |
| 2 | 28 | 22 |
| 3 | 28 | 22 |
| 4 | 28 | 22 |
| 5 | 28 | 22 |
| 6 | 28 | 22 |
| 7 | 28 | 22 |
| 8 | 28 | 22 |
| 9 | 28 | 22 |
| 10 | 28 | 22 |
| 11 | 28 | 22 |
| 12 | 28 | 22 |
| 13 | 28 | 22 |
| 14 | 28 | 22 |
| 15 | 28 | 22 |
| 16 | 28 | 22 |
| 17 | 28 | 22 |
| 18 | 28 | 22 |
| 19 | 27 | 22 |
| 20 | 27 | 22 |
| 21 | 27 | 22 |
| 22 | 27 | 22 |
| 23 | 27 | 22 |
| 24 | 27 | 22 |
| 25 | 27 | 22 |
| 26 | 27 | 22 |
| 27 | 27 | 22 |
| 28 | 27 | 22 |
| 29 | 27 | 22 |
| 30 | 27 | 22 |
| 31 | 27 | 22 |
How December really feels in Chetumal
Once humidity and wind are folded in, December 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.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Chetumal weather by month
How December compares with the rest of the year at a glance. December is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 21° | 52 | 12.3 | 11 | 6.4 |
| Feb | 28° / 22° | 24 | 7.1 | 11.4 | 6.6 |
| Mar | 29° / 23° | 26 | 6.8 | 11.9 | 6.1 |
| Apr | 31° / 25° | 32 | 7.4 | 12.4 | 5.3 |
| May | 31° / 25° | 93 | 15.4 | 12.9 | 4.1 |
| Jun | 31° / 26° | 193 | 21.7 | 13.1 | 3.3 |
| Jul | 31° / 26° | 120 | 21.3 | 13 | 3.4 |
| Aug | 31° / 26° | 158 | 23.2 | 12.6 | 3.2 |
| Sep | 31° / 25° | 186 | 25.1 | 12.1 | 2.9 |
| Oct | 30° / 24° | 190 | 21.9 | 11.6 | 3.7 |
| Nov | 28° / 23° | 96 | 14.7 | 11.1 | 5.2 |
| Dec | 28° / 22° | 55 | 13.2 | 10.9 | 6.2 |
Cloud cover in December
The sky is clear or mostly clear about 45% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 25% of December, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.
| 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 (%) | 68 | 70 | 70 | 70 | 71 | 72 | 72 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 71 | 71 | 70 | 70 | 69 | 69 | 69 | 68 | 69 | 68 | 68 | 68 | 68 | 68 | 68 | 68 |
| Cloudier (%) | 32 | 30 | 30 | 30 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 31 | 31 | 31 | 32 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 68 | 32 |
| 2 | 70 | 30 |
| 3 | 70 | 30 |
| 4 | 70 | 30 |
| 5 | 71 | 29 |
| 6 | 72 | 28 |
| 7 | 72 | 28 |
| 8 | 72 | 28 |
| 9 | 72 | 28 |
| 10 | 72 | 28 |
| 11 | 72 | 28 |
| 12 | 71 | 29 |
| 13 | 71 | 29 |
| 14 | 71 | 29 |
| 15 | 70 | 30 |
| 16 | 71 | 29 |
| 17 | 71 | 29 |
| 18 | 70 | 30 |
| 19 | 70 | 30 |
| 20 | 69 | 31 |
| 21 | 69 | 31 |
| 22 | 69 | 31 |
| 23 | 68 | 32 |
| 24 | 69 | 31 |
| 25 | 68 | 32 |
| 26 | 68 | 32 |
| 27 | 68 | 32 |
| 28 | 68 | 32 |
| 29 | 68 | 32 |
| 30 | 68 | 32 |
| 31 | 68 | 32 |
Chance of precipitation in December
Chetumal gets around 55 mm of rain over 13.2 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 43% and peaks near 43% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 |
| Rain chance (%) | |
|---|---|
| 1 | 42 |
| 2 | 42 |
| 3 | 42 |
| 4 | 42 |
| 5 | 42 |
| 6 | 42 |
| 7 | 42 |
| 8 | 42 |
| 9 | 42 |
| 10 | 43 |
| 11 | 43 |
| 12 | 43 |
| 13 | 43 |
| 14 | 43 |
| 15 | 43 |
| 16 | 43 |
| 17 | 43 |
| 18 | 43 |
| 19 | 43 |
| 20 | 43 |
| 21 | 43 |
| 22 | 43 |
| 23 | 43 |
| 24 | 43 |
| 25 | 43 |
| 26 | 43 |
| 27 | 43 |
| 28 | 43 |
| 29 | 43 |
| 30 | 43 |
| 31 | 43 |
Humidity in December
Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the oppressive band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 84% 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 (%) | 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 | 0 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Humid (%) | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 |
| Muggy (%) | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 |
| Oppressive (%) | 56 | 56 | 56 | 57 | 57 | 57 | 56 | 57 | 57 | 56 | 56 | 56 | 56 | 55 | 55 | 54 | 54 | 55 | 53 | 53 | 53 | 54 | 54 | 54 | 54 | 55 | 56 | 56 | 56 | 56 | 56 |
| Miserable (%) | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 0 | 2 | 9 | 22 | 56 | 11 |
| 2 | 0 | 2 | 9 | 23 | 56 | 10 |
| 3 | 0 | 2 | 9 | 23 | 56 | 10 |
| 4 | 0 | 2 | 9 | 22 | 57 | 10 |
| 5 | 0 | 2 | 9 | 22 | 57 | 10 |
| 6 | 0 | 3 | 9 | 22 | 57 | 9 |
| 7 | 0 | 3 | 10 | 22 | 56 | 9 |
| 8 | 0 | 3 | 10 | 21 | 57 | 9 |
| 9 | 0 | 3 | 10 | 21 | 57 | 8 |
| 10 | 0 | 4 | 11 | 21 | 56 | 8 |
| 11 | 0 | 4 | 11 | 21 | 56 | 8 |
| 12 | 0 | 4 | 11 | 21 | 56 | 8 |
| 13 | 0 | 4 | 12 | 21 | 56 | 7 |
| 14 | 0 | 5 | 12 | 21 | 55 | 7 |
| 15 | 0 | 5 | 12 | 21 | 55 | 7 |
| 16 | 0 | 5 | 13 | 21 | 54 | 7 |
| 17 | 0 | 5 | 13 | 21 | 54 | 7 |
| 18 | 0 | 5 | 13 | 21 | 55 | 6 |
| 19 | 0 | 6 | 13 | 22 | 53 | 6 |
| 20 | 0 | 6 | 13 | 22 | 53 | 6 |
| 21 | 0 | 6 | 13 | 22 | 53 | 6 |
| 22 | 0 | 6 | 12 | 22 | 54 | 6 |
| 23 | 0 | 6 | 12 | 22 | 54 | 6 |
| 24 | 0 | 6 | 12 | 22 | 54 | 6 |
| 25 | 0 | 6 | 12 | 22 | 54 | 6 |
| 26 | 0 | 6 | 11 | 22 | 55 | 6 |
| 27 | 1 | 6 | 11 | 21 | 56 | 5 |
| 28 | 1 | 6 | 11 | 21 | 56 | 5 |
| 29 | 1 | 6 | 11 | 21 | 56 | 5 |
| 30 | 1 | 6 | 11 | 21 | 56 | 5 |
| 31 | 1 | 6 | 11 | 21 | 56 | 5 |
Wind in December
Winds average 12 km/h in December.
Across December, daily wind ranges from about 12 km/h on the calmest days to 13 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) | 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 | 13 | 13 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | calm | calm | calm | calm | calm | calm | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | light breeze |
| 13 | 12 | light breeze |
| 14 | 12 | light breeze |
| 15 | 12 | light breeze |
| 16 | 12 | light breeze |
| 17 | 12 | light breeze |
| 18 | 12 | light breeze |
| 19 | 12 | light breeze |
| 20 | 12 | light breeze |
| 21 | 12 | light breeze |
| 22 | 12 | light breeze |
| 23 | 13 | light breeze |
| 24 | 13 | light breeze |
| 25 | 13 | light breeze |
| 26 | 13 | light breeze |
| 27 | 13 | light breeze |
| 28 | 13 | light breeze |
| 29 | 13 | light breeze |
| 30 | 13 | light breeze |
| 31 | 13 | light breeze |
Sunrise & sunset in December
Daylight runs from about 11 hours at the start of December to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 6:14 AM to 6:29 AM, and sunset from 5:12 PM to 5:23 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) | 11.0 | 11.0 | 11.0 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 | 10.9 |
| Sunrise (AM) | 6:14 | 6:15 | 6:15 | 6:16 | 6:16 | 6:17 | 6:18 | 6:18 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:25 | 6:25 | 6:26 | 6:26 | 6:27 | 6:27 | 6:27 | 6:28 | 6:28 | 6:29 | 6:29 | 6:29 |
| Sunset (PM) | 5:12 | 5:12 | 5:12 | 5:13 | 5:13 | 5:13 | 5:13 | 5:13 | 5:14 | 5:14 | 5:14 | 5:15 | 5:15 | 5:15 | 5:16 | 5:16 | 5:17 | 5:17 | 5:17 | 5:18 | 5:18 | 5:19 | 5:19 | 5:20 | 5:20 | 5:21 | 5:21 | 5:22 | 5:22 | 5:23 | 5:23 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.0 | 6:14 | 5:12 |
| 2 | 11.0 | 6:15 | 5:12 |
| 3 | 11.0 | 6:15 | 5:12 |
| 4 | 10.9 | 6:16 | 5:13 |
| 5 | 10.9 | 6:16 | 5:13 |
| 6 | 10.9 | 6:17 | 5:13 |
| 7 | 10.9 | 6:18 | 5:13 |
| 8 | 10.9 | 6:18 | 5:13 |
| 9 | 10.9 | 6:19 | 5:14 |
| 10 | 10.9 | 6:19 | 5:14 |
| 11 | 10.9 | 6:20 | 5:14 |
| 12 | 10.9 | 6:20 | 5:15 |
| 13 | 10.9 | 6:21 | 5:15 |
| 14 | 10.9 | 6:22 | 5:15 |
| 15 | 10.9 | 6:22 | 5:16 |
| 16 | 10.9 | 6:23 | 5:16 |
| 17 | 10.9 | 6:23 | 5:17 |
| 18 | 10.9 | 6:24 | 5:17 |
| 19 | 10.9 | 6:24 | 5:17 |
| 20 | 10.9 | 6:25 | 5:18 |
| 21 | 10.9 | 6:25 | 5:18 |
| 22 | 10.9 | 6:26 | 5:19 |
| 23 | 10.9 | 6:26 | 5:19 |
| 24 | 10.9 | 6:27 | 5:20 |
| 25 | 10.9 | 6:27 | 5:20 |
| 26 | 10.9 | 6:27 | 5:21 |
| 27 | 10.9 | 6:28 | 5:21 |
| 28 | 10.9 | 6:28 | 5:22 |
| 29 | 10.9 | 6:29 | 5:22 |
| 30 | 10.9 | 6:29 | 5:23 |
| 31 | 10.9 | 6:29 | 5:23 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 3.85 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 3.85 kWh/m² to a high of 6.23 kWh/m² in April across the year — December's 3.85 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) | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.9 | 3.9 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.9 | Moderate |
| 2 | 3.9 | Moderate |
| 3 | 3.9 | Moderate |
| 4 | 3.9 | Moderate |
| 5 | 3.9 | Moderate |
| 6 | 3.9 | Moderate |
| 7 | 3.9 | Moderate |
| 8 | 3.9 | Moderate |
| 9 | 3.9 | Moderate |
| 10 | 3.8 | Moderate |
| 11 | 3.8 | Moderate |
| 12 | 3.8 | Moderate |
| 13 | 3.8 | Moderate |
| 14 | 3.8 | Moderate |
| 15 | 3.8 | Moderate |
| 16 | 3.8 | Moderate |
| 17 | 3.8 | Moderate |
| 18 | 3.8 | Moderate |
| 19 | 3.8 | Moderate |
| 20 | 3.8 | Moderate |
| 21 | 3.8 | Moderate |
| 22 | 3.8 | Moderate |
| 23 | 3.8 | Moderate |
| 24 | 3.8 | Moderate |
| 25 | 3.8 | Moderate |
| 26 | 3.8 | Moderate |
| 27 | 3.8 | Moderate |
| 28 | 3.8 | Moderate |
| 29 | 3.8 | Moderate |
| 30 | 3.9 | Moderate |
| 31 | 3.9 | Moderate |
Hazard calendar for Chetumal
None of Chetumal's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Chetumal sits in the Atlantic hurricane belt; the season peaks August–October.
Chetumal's rainy season runs May–November, when most of the year's rain falls.
Is December a good time to visit Chetumal?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Chetumal for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Chetumal in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Chetumal sees daytime highs around 28°C and nights near 22°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.
Sea temperature near Chetumal in December
The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 22 km away) is warmest in September 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 26 | 27 | 28 | 29 | 29 | 29 | 30 | 30 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Warm |
| Dec | 27 | Warm |
UV index in Chetumal in December
Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chetumal peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (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) | 8 | 11 | 12 | 13 | 11 | 13 | 12 | 12 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 11 | Extreme |
| Mar | 12 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Chetumal in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Chetumal is worst in June — around 30 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (December, 7 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) | 7 | 10 | 11 | 19 | 24 | 30 | 29 | 21 | 15 | 10 | 7 | 7 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 10 | Good |
| Mar | 11 | Good |
| Apr | 19 | Moderate |
| May | 24 | Moderate |
| Jun | 30 | Moderate |
| Jul | 29 | Moderate |
| Aug | 21 | Moderate |
| Sep | 15 | Moderate |
| Oct | 10 | Good |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Chetumal?
Chetumal sits at 18.5°N, 88.3°W, 3 m above sea level, in Mexico. The nearest listed city is Bacalar, 20 km away.
Topography around Chetumal
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chetumal.
Within 3 km, the terrain around Chetumal has only modest variations in elevation — a maximum elevation change of 19 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 32 m; within 80 km, only modest variations in elevation — a maximum elevation change of 223 m.
The land around Chetumal is covered by artificial surfaces (66%) and trees (20%) within 3 km, water (42%) and trees (40%) within 16 km, and trees (53%) and water (24%) 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 Chetumal (18.5196°, -88.304°, elevation 3 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).