San Luis weather in December
In December, San Luis sees average daytime highs of 28°C and overnight lows near 20°C, with 25 mm of rain across 5.1 wet days and about 10.8 hours of daylight. It is the 11th-warmest and 10th-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 55% of the time in December, and the air most often feels muggy.
Daylight stretches from about 10 h 54 min at the start of December to 10 h 48 min by month's end. Set against the rest of the year, December is San Luis's 4th-clearest and 1st-windiest month. For the whole year in context, see San Luis's year-round climate.
- Daytime high
- 28°
- 11th warmest
- Overnight low
- 20°
- 4th coldest
- Rainfall
- 25 mm
- 5.1 wet days
- Daylight
- 10 h 48 min
- 6:36 AM – 5:23 PM
- Cloud cover
- 41%
- 4th clearest
- Wind
- 9 km/h
- 1st windiest
- Solar energy
- 4.12 kWh/m²
- Travel score
- 6.7
- out of 10
Temperature in December
Day-to-day highs hold fairly steady near 28°C through the month.
A typical December day in San Luis reaches about 28°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, December runs on par with 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) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 20 |
| 2 | 29 | 20 |
| 3 | 29 | 20 |
| 4 | 29 | 20 |
| 5 | 29 | 20 |
| 6 | 29 | 20 |
| 7 | 29 | 20 |
| 8 | 29 | 20 |
| 9 | 29 | 20 |
| 10 | 28 | 20 |
| 11 | 28 | 20 |
| 12 | 28 | 20 |
| 13 | 28 | 20 |
| 14 | 28 | 20 |
| 15 | 28 | 20 |
| 16 | 28 | 20 |
| 17 | 28 | 20 |
| 18 | 28 | 20 |
| 19 | 28 | 20 |
| 20 | 28 | 20 |
| 21 | 28 | 19 |
| 22 | 28 | 19 |
| 23 | 28 | 19 |
| 24 | 28 | 19 |
| 25 | 28 | 19 |
| 26 | 28 | 19 |
| 27 | 28 | 19 |
| 28 | 28 | 19 |
| 29 | 28 | 19 |
| 30 | 28 | 19 |
| 31 | 28 | 19 |
How December really feels in San Luis
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.
San Luis weather by month
How December compares with the rest of the year at a glance. December is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 19° | 15 | 4 | 10.9 | 7.0 |
| Feb | 29° / 19° | 15 | 3.5 | 11.3 | 6.7 |
| Mar | 29° / 19° | 32 | 6.5 | 11.9 | 6.0 |
| Apr | 30° / 21° | 55 | 9.8 | 12.4 | 5.1 |
| May | 31° / 22° | 143 | 18.7 | 12.9 | 3.9 |
| Jun | 31° / 23° | 113 | 18.5 | 13.2 | 3.4 |
| Jul | 32° / 23° | 89 | 18.6 | 13.1 | 3.2 |
| Aug | 32° / 23° | 110 | 20.6 | 12.7 | 3.0 |
| Sep | 31° / 23° | 141 | 22.9 | 12.1 | 3.0 |
| Oct | 30° / 22° | 120 | 20.2 | 11.5 | 3.8 |
| Nov | 29° / 21° | 58 | 10.1 | 11 | 5.6 |
| Dec | 28° / 20° | 25 | 5.1 | 10.8 | 6.7 |
Cloud cover in December
The sky is clear or mostly clear about 55% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 23%.
| 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 (%) | 76 | 78 | 78 | 79 | 80 | 79 | 79 | 80 | 79 | 79 | 78 | 78 | 77 | 77 | 77 | 77 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 76 | 77 | 77 | 78 | 78 | 79 | 79 | 79 |
| Cloudier (%) | 24 | 22 | 22 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 23 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 21 | 21 | 21 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 76 | 24 |
| 2 | 78 | 22 |
| 3 | 78 | 22 |
| 4 | 79 | 21 |
| 5 | 80 | 20 |
| 6 | 79 | 21 |
| 7 | 79 | 21 |
| 8 | 80 | 20 |
| 9 | 79 | 21 |
| 10 | 79 | 21 |
| 11 | 78 | 22 |
| 12 | 78 | 22 |
| 13 | 77 | 23 |
| 14 | 77 | 23 |
| 15 | 77 | 23 |
| 16 | 77 | 23 |
| 17 | 75 | 25 |
| 18 | 75 | 25 |
| 19 | 75 | 25 |
| 20 | 75 | 25 |
| 21 | 75 | 25 |
| 22 | 76 | 24 |
| 23 | 76 | 24 |
| 24 | 76 | 24 |
| 25 | 77 | 23 |
| 26 | 77 | 23 |
| 27 | 78 | 22 |
| 28 | 78 | 22 |
| 29 | 79 | 21 |
| 30 | 79 | 21 |
| 31 | 79 | 21 |
Chance of precipitation in December
San Luis gets around 25 mm of rain over 5.1 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 17% and peaks near 22% on the wettest days. The odds ease 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 (%) | 22 | 21 | 21 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 |
| Rain chance (%) | |
|---|---|
| 1 | 22 |
| 2 | 21 |
| 3 | 21 |
| 4 | 20 |
| 5 | 19 |
| 6 | 19 |
| 7 | 18 |
| 8 | 18 |
| 9 | 17 |
| 10 | 17 |
| 11 | 17 |
| 12 | 17 |
| 13 | 18 |
| 14 | 18 |
| 15 | 18 |
| 16 | 18 |
| 17 | 18 |
| 18 | 18 |
| 19 | 17 |
| 20 | 17 |
| 21 | 17 |
| 22 | 16 |
| 23 | 16 |
| 24 | 15 |
| 25 | 15 |
| 26 | 14 |
| 27 | 14 |
| 28 | 13 |
| 29 | 13 |
| 30 | 13 |
| 31 | 12 |
Humidity in December
Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the muggy band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 78% 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Humid (%) | 12 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 20 | 20 | 21 | 22 | 23 |
| Muggy (%) | 62 | 63 | 64 | 65 | 67 | 68 | 67 | 68 | 67 | 68 | 68 | 69 | 68 | 68 | 68 | 68 | 69 | 68 | 69 | 69 | 69 | 69 | 69 | 68 | 68 | 69 | 68 | 69 | 68 | 68 | 67 |
| Oppressive (%) | 24 | 22 | 21 | 20 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 4 | 4 | 3 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 0 | 2 | 12 | 62 | 24 |
| 2 | 0 | 2 | 13 | 63 | 22 |
| 3 | 0 | 2 | 13 | 64 | 21 |
| 4 | 0 | 2 | 13 | 65 | 20 |
| 5 | 0 | 2 | 13 | 67 | 18 |
| 6 | 0 | 2 | 13 | 68 | 17 |
| 7 | 0 | 3 | 14 | 67 | 16 |
| 8 | 0 | 3 | 14 | 68 | 15 |
| 9 | 1 | 3 | 15 | 67 | 14 |
| 10 | 1 | 3 | 15 | 68 | 13 |
| 11 | 1 | 3 | 16 | 68 | 12 |
| 12 | 1 | 3 | 16 | 69 | 11 |
| 13 | 1 | 4 | 17 | 68 | 10 |
| 14 | 1 | 4 | 17 | 68 | 10 |
| 15 | 1 | 4 | 18 | 68 | 9 |
| 16 | 1 | 4 | 18 | 68 | 9 |
| 17 | 1 | 4 | 18 | 69 | 8 |
| 18 | 1 | 5 | 18 | 68 | 8 |
| 19 | 1 | 5 | 18 | 69 | 7 |
| 20 | 1 | 5 | 18 | 69 | 7 |
| 21 | 1 | 5 | 18 | 69 | 7 |
| 22 | 1 | 5 | 18 | 69 | 7 |
| 23 | 1 | 6 | 18 | 69 | 6 |
| 24 | 1 | 6 | 19 | 68 | 6 |
| 25 | 1 | 6 | 19 | 68 | 6 |
| 26 | 1 | 6 | 19 | 69 | 5 |
| 27 | 1 | 6 | 20 | 68 | 5 |
| 28 | 1 | 6 | 20 | 69 | 4 |
| 29 | 1 | 6 | 21 | 68 | 4 |
| 30 | 1 | 6 | 22 | 68 | 3 |
| 31 | 1 | 6 | 23 | 67 | 3 |
Wind in December
Winds average 9 km/h in December, the windiest month of the year.
Across December, daily wind ranges from about 8 km/h on the calmest days to 9 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 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
| 31 | 9 | calm |
Sunrise & sunset in December
Daylight runs from about 10 h 54 min at the start of December to 10 h 48 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 6:27 AM to 6:43 AM, and sunset from 5:19 PM to 5:30 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) | 10.9 | 10.9 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 |
| Sunrise (AM) | 6:27 | 6:28 | 6:28 | 6:29 | 6:30 | 6:30 | 6:31 | 6:31 | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:38 | 6:39 | 6:39 | 6:40 | 6:40 | 6:40 | 6:41 | 6:41 | 6:42 | 6:42 | 6:42 | 6:43 |
| Sunset (PM) | 5:19 | 5:19 | 5:19 | 5:20 | 5:20 | 5:20 | 5:20 | 5:20 | 5:21 | 5:21 | 5:21 | 5:22 | 5:22 | 5:22 | 5:23 | 5:23 | 5:23 | 5:24 | 5:24 | 5:25 | 5:25 | 5:26 | 5:26 | 5:27 | 5:27 | 5:28 | 5:28 | 5:29 | 5:29 | 5:30 | 5:30 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.9 | 6:27 | 5:19 |
| 2 | 10.9 | 6:28 | 5:19 |
| 3 | 10.8 | 6:28 | 5:19 |
| 4 | 10.8 | 6:29 | 5:20 |
| 5 | 10.8 | 6:30 | 5:20 |
| 6 | 10.8 | 6:30 | 5:20 |
| 7 | 10.8 | 6:31 | 5:20 |
| 8 | 10.8 | 6:31 | 5:20 |
| 9 | 10.8 | 6:32 | 5:21 |
| 10 | 10.8 | 6:33 | 5:21 |
| 11 | 10.8 | 6:33 | 5:21 |
| 12 | 10.8 | 6:34 | 5:22 |
| 13 | 10.8 | 6:34 | 5:22 |
| 14 | 10.8 | 6:35 | 5:22 |
| 15 | 10.8 | 6:35 | 5:23 |
| 16 | 10.8 | 6:36 | 5:23 |
| 17 | 10.8 | 6:37 | 5:23 |
| 18 | 10.8 | 6:37 | 5:24 |
| 19 | 10.8 | 6:38 | 5:24 |
| 20 | 10.8 | 6:38 | 5:25 |
| 21 | 10.8 | 6:39 | 5:25 |
| 22 | 10.8 | 6:39 | 5:26 |
| 23 | 10.8 | 6:40 | 5:26 |
| 24 | 10.8 | 6:40 | 5:27 |
| 25 | 10.8 | 6:40 | 5:27 |
| 26 | 10.8 | 6:41 | 5:28 |
| 27 | 10.8 | 6:41 | 5:28 |
| 28 | 10.8 | 6:42 | 5:29 |
| 29 | 10.8 | 6:42 | 5:29 |
| 30 | 10.8 | 6:42 | 5:30 |
| 31 | 10.8 | 6:43 | 5:30 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.12 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.12 kWh/m² to a high of 6.64 kWh/m² in July across the year — December's 4.12 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) | 4.2 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.2 | Bright |
| 2 | 4.1 | Bright |
| 3 | 4.1 | Bright |
| 4 | 4.1 | Bright |
| 5 | 4.1 | Bright |
| 6 | 4.1 | Bright |
| 7 | 4.1 | Bright |
| 8 | 4.1 | Bright |
| 9 | 4.1 | Bright |
| 10 | 4.1 | Bright |
| 11 | 4.1 | Bright |
| 12 | 4.1 | Bright |
| 13 | 4.1 | Bright |
| 14 | 4.1 | Bright |
| 15 | 4.1 | Bright |
| 16 | 4.1 | Bright |
| 17 | 4.1 | Bright |
| 18 | 4.1 | Bright |
| 19 | 4.1 | Bright |
| 20 | 4.1 | Bright |
| 21 | 4.1 | Bright |
| 22 | 4.1 | Bright |
| 23 | 4.1 | Bright |
| 24 | 4.1 | Bright |
| 25 | 4.1 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.2 | Bright |
| 28 | 4.2 | Bright |
| 29 | 4.2 | Bright |
| 30 | 4.2 | Bright |
| 31 | 4.2 | Bright |
Hazard calendar for San Luis
None of San Luis's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
San Luis sits in the Atlantic hurricane belt; the season peaks August–October.
San Luis's rainy season runs May–October, when most of the year's rain falls.
Is December a good time to visit San Luis?
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 San Luis for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Luis in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, San Luis sees daytime highs around 28°C and nights near 20°C. Pack light clothes. About 5 days see rain.
Sea temperature near San Luis in December
The nearest coast averages about 28°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 35 km away) is warmest in September at about 30°C and coldest in February near 27°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) | 27 | 27 | 27 | 28 | 28 | 29 | 29 | 30 | 30 | 30 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 28 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 30 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in San Luis 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 San Luis peaks around June 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (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 | 10 | 12 | 11 | 12 | 12 | 11 | 12 | 12 | 10 | 7 | 7 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 11 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | Very high |
| Dec | 7 | High |
Air quality in San Luis 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 San Luis is worst in June — around 25 µg/m³ PM2.5 (moderate), about 3.6× 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) | 8 | 9 | 10 | 12 | 15 | 25 | 23 | 19 | 15 | 12 | 8 | 7 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 10 | Good |
| Apr | 12 | Good |
| May | 15 | Moderate |
| Jun | 25 | Moderate |
| Jul | 23 | Moderate |
| Aug | 19 | Moderate |
| Sep | 15 | Moderate |
| Oct | 12 | Moderate |
| Nov | 8 | Good |
| Dec | 7 | Good |
Where is San Luis?
San Luis sits at 20.2°N, 75.9°W, 201 m above sea level, in Cuba. The nearest listed city is Palma Soriano, 15 km away.
Topography around San Luis
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Luis.
Within 3 km, the terrain around San Luis has only modest variations in elevation — a maximum elevation change of 171 m around an average of 184 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 569 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,730 m.
The land around San Luis is covered by trees (38%) and grassland (35%) within 3 km, trees (63%) and grassland (27%) within 16 km, and trees (47%) and water (27%) within 80 km.
Cuba travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C / L
- 110 V · 60 Hz
- Prices
- ≈ 39% of US
- price level, 2011
- GDP per capita
- $9,605
- 2020
- Happiness
- 5.4 / 10
- World Happiness, 2011
- Homicide rate
- 4.5
- per 100k, 2019
- Road deaths
- 8.9
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 515
- 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 San Luis (20.1881°, -75.8503°, elevation 201 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).