Yauco weather in December
In December, Yauco sees average daytime highs of 27°C and overnight lows near 23°C, with 22 mm of rain across 5 wet days and about 10.9 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 62% of the time in December, and the air most often feels muggy.
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 Yauco's 3rd-clearest and 6th-windiest month. For the whole year in context, see Yauco's year-round climate.
- Daytime high
- 27°
- 8th warmest
- Overnight low
- 23°
- 5th coldest
- Rainfall
- 22 mm
- 5 wet days
- Daylight
- 10 h 54 min
- 6:56 AM – 5:51 PM
- Cloud cover
- 40%
- 3rd clearest
- Wind
- 15 km/h
- 6th windiest
- Solar energy
- 4.57 kWh/m²
- Travel score
- 7.5
- out of 10
Temperature in December
Day-to-day highs hold fairly steady near 27°C through the month.
A typical December day in Yauco reaches about 27°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°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) | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 23 |
| 2 | 28 | 23 |
| 3 | 28 | 23 |
| 4 | 28 | 23 |
| 5 | 27 | 23 |
| 6 | 27 | 23 |
| 7 | 27 | 23 |
| 8 | 27 | 23 |
| 9 | 27 | 23 |
| 10 | 27 | 23 |
| 11 | 27 | 23 |
| 12 | 27 | 23 |
| 13 | 27 | 23 |
| 14 | 27 | 23 |
| 15 | 27 | 23 |
| 16 | 27 | 23 |
| 17 | 27 | 23 |
| 18 | 27 | 23 |
| 19 | 27 | 23 |
| 20 | 27 | 23 |
| 21 | 27 | 23 |
| 22 | 27 | 23 |
| 23 | 27 | 23 |
| 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 Yauco
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.
Yauco weather by month
How December compares with the rest of the year at a glance. December is the 8th-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 | 27° / 22° | 15 | 4.4 | 11 | 7.8 |
| Feb | 27° / 22° | 19 | 4.5 | 11.4 | 7.7 |
| Mar | 27° / 22° | 35 | 7.5 | 11.9 | 7.1 |
| Apr | 27° / 23° | 55 | 11.2 | 12.4 | 6.4 |
| May | 28° / 24° | 92 | 15.4 | 12.8 | 5.6 |
| Jun | 29° / 24° | 53 | 13.2 | 13.1 | 5.2 |
| Jul | 29° / 25° | 60 | 13.3 | 13 | 5.1 |
| Aug | 29° / 25° | 85 | 17.4 | 12.6 | 4.5 |
| Sep | 29° / 25° | 127 | 20.1 | 12.1 | 4.3 |
| Oct | 28° / 24° | 106 | 19.5 | 11.6 | 4.6 |
| Nov | 28° / 23° | 73 | 13.1 | 11.2 | 6.0 |
| Dec | 27° / 23° | 22 | 5 | 10.9 | 7.5 |
Cloud cover in December
The sky is clear or mostly clear about 62% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to open up 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 (%) | 79 | 79 | 80 | 80 | 80 | 81 | 81 | 81 | 81 | 82 | 82 | 81 | 82 | 82 | 83 | 82 | 82 | 82 | 82 | 83 | 83 | 83 | 83 | 84 | 84 | 85 | 85 | 86 | 87 | 87 | 87 |
| Cloudier (%) | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 19 | 18 | 18 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 13 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 79 | 21 |
| 2 | 79 | 21 |
| 3 | 80 | 20 |
| 4 | 80 | 20 |
| 5 | 80 | 20 |
| 6 | 81 | 19 |
| 7 | 81 | 19 |
| 8 | 81 | 19 |
| 9 | 81 | 19 |
| 10 | 82 | 18 |
| 11 | 82 | 18 |
| 12 | 81 | 19 |
| 13 | 82 | 18 |
| 14 | 82 | 18 |
| 15 | 83 | 17 |
| 16 | 82 | 18 |
| 17 | 82 | 18 |
| 18 | 82 | 18 |
| 19 | 82 | 18 |
| 20 | 83 | 17 |
| 21 | 83 | 17 |
| 22 | 83 | 17 |
| 23 | 83 | 17 |
| 24 | 84 | 16 |
| 25 | 84 | 16 |
| 26 | 85 | 15 |
| 27 | 85 | 15 |
| 28 | 86 | 14 |
| 29 | 87 | 13 |
| 30 | 87 | 13 |
| 31 | 87 | 13 |
Chance of precipitation in December
Yauco gets around 22 mm of rain over 5 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 16% and peaks near 24% 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 (%) | 24 | 23 | 22 | 22 | 21 | 20 | 20 | 19 | 19 | 18 | 17 | 17 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
| Rain chance (%) | |
|---|---|
| 1 | 24 |
| 2 | 23 |
| 3 | 22 |
| 4 | 22 |
| 5 | 21 |
| 6 | 20 |
| 7 | 20 |
| 8 | 19 |
| 9 | 19 |
| 10 | 18 |
| 11 | 17 |
| 12 | 17 |
| 13 | 16 |
| 14 | 15 |
| 15 | 15 |
| 16 | 15 |
| 17 | 14 |
| 18 | 14 |
| 19 | 14 |
| 20 | 14 |
| 21 | 14 |
| 22 | 14 |
| 23 | 13 |
| 24 | 13 |
| 25 | 13 |
| 26 | 12 |
| 27 | 12 |
| 28 | 12 |
| 29 | 12 |
| 30 | 12 |
| 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 67% of days. Sticky, muggy-or-worse air turns up on roughly 92% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Humid (%) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 |
| Muggy (%) | 52 | 54 | 56 | 57 | 58 | 60 | 61 | 62 | 63 | 63 | 64 | 65 | 66 | 66 | 66 | 66 | 67 | 68 | 69 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 77 | 79 | 80 |
| Oppressive (%) | 42 | 40 | 38 | 37 | 36 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 26 | 25 | 24 | 23 | 22 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 0 | 6 | 52 | 42 |
| 2 | 0 | 6 | 54 | 40 |
| 3 | 0 | 6 | 56 | 38 |
| 4 | 0 | 6 | 57 | 37 |
| 5 | 0 | 6 | 58 | 36 |
| 6 | 0 | 6 | 60 | 34 |
| 7 | 0 | 6 | 61 | 33 |
| 8 | 0 | 6 | 62 | 32 |
| 9 | 0 | 6 | 63 | 31 |
| 10 | 0 | 7 | 63 | 30 |
| 11 | 0 | 7 | 64 | 29 |
| 12 | 0 | 7 | 65 | 28 |
| 13 | 0 | 7 | 66 | 27 |
| 14 | 0 | 8 | 66 | 26 |
| 15 | 0 | 8 | 66 | 26 |
| 16 | 1 | 8 | 66 | 25 |
| 17 | 1 | 8 | 67 | 24 |
| 18 | 1 | 8 | 68 | 23 |
| 19 | 1 | 8 | 69 | 22 |
| 20 | 1 | 8 | 69 | 22 |
| 21 | 1 | 8 | 70 | 21 |
| 22 | 1 | 8 | 71 | 20 |
| 23 | 1 | 8 | 72 | 19 |
| 24 | 1 | 8 | 73 | 18 |
| 25 | 1 | 8 | 74 | 17 |
| 26 | 1 | 8 | 75 | 16 |
| 27 | 1 | 8 | 76 | 15 |
| 28 | 1 | 8 | 77 | 14 |
| 29 | 1 | 9 | 77 | 13 |
| 30 | 0 | 9 | 79 | 12 |
| 31 | 0 | 9 | 80 | 11 |
Wind in December
Winds average 15 km/h in December.
Across December, daily wind ranges from about 14 km/h on the calmest days to 16 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) | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Feels | 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 | 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 | 14 | light breeze |
| 2 | 14 | light breeze |
| 3 | 14 | light breeze |
| 4 | 14 | light breeze |
| 5 | 14 | light breeze |
| 6 | 15 | light breeze |
| 7 | 15 | light breeze |
| 8 | 15 | light breeze |
| 9 | 15 | light breeze |
| 10 | 15 | light breeze |
| 11 | 15 | light breeze |
| 12 | 15 | light breeze |
| 13 | 15 | light breeze |
| 14 | 15 | light breeze |
| 15 | 15 | light breeze |
| 16 | 15 | light breeze |
| 17 | 15 | light breeze |
| 18 | 15 | light breeze |
| 19 | 15 | light breeze |
| 20 | 15 | light breeze |
| 21 | 15 | light breeze |
| 22 | 15 | light breeze |
| 23 | 15 | light breeze |
| 24 | 15 | light breeze |
| 25 | 16 | light breeze |
| 26 | 16 | light breeze |
| 27 | 16 | light breeze |
| 28 | 16 | light breeze |
| 29 | 16 | light breeze |
| 30 | 16 | light breeze |
| 31 | 16 | 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 6:47 AM to 7:03 AM, and sunset from 5:47 PM to 5:59 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 | 11.0 | 11.0 | 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 |
| Sunrise (AM) | 6:47 | 6:48 | 6:48 | 6:49 | 6:50 | 6:50 | 6:51 | 6:51 | 6:52 | 6:53 | 6:53 | 6:54 | 6:54 | 6:55 | 6:55 | 6:56 | 6:56 | 6:57 | 6:57 | 6:58 | 6:58 | 6:59 | 6:59 | 7:00 | 7:00 | 7:01 | 7:01 | 7:01 | 7:02 | 7:02 | 7:03 |
| Sunset (PM) | 5:47 | 5:47 | 5:47 | 5:48 | 5:48 | 5:48 | 5:48 | 5:49 | 5:49 | 5:49 | 5:49 | 5:50 | 5:50 | 5:51 | 5:51 | 5:51 | 5:52 | 5:52 | 5:53 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:56 | 5:56 | 5:57 | 5:57 | 5:58 | 5:59 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.0 | 6:47 | 5:47 |
| 2 | 11.0 | 6:48 | 5:47 |
| 3 | 11.0 | 6:48 | 5:47 |
| 4 | 11.0 | 6:49 | 5:48 |
| 5 | 11.0 | 6:50 | 5:48 |
| 6 | 11.0 | 6:50 | 5:48 |
| 7 | 11.0 | 6:51 | 5:48 |
| 8 | 11.0 | 6:51 | 5:49 |
| 9 | 10.9 | 6:52 | 5:49 |
| 10 | 10.9 | 6:53 | 5:49 |
| 11 | 10.9 | 6:53 | 5:49 |
| 12 | 10.9 | 6:54 | 5:50 |
| 13 | 10.9 | 6:54 | 5:50 |
| 14 | 10.9 | 6:55 | 5:51 |
| 15 | 10.9 | 6:55 | 5:51 |
| 16 | 10.9 | 6:56 | 5:51 |
| 17 | 10.9 | 6:56 | 5:52 |
| 18 | 10.9 | 6:57 | 5:52 |
| 19 | 10.9 | 6:57 | 5:53 |
| 20 | 10.9 | 6:58 | 5:53 |
| 21 | 10.9 | 6:58 | 5:53 |
| 22 | 10.9 | 6:59 | 5:54 |
| 23 | 10.9 | 6:59 | 5:54 |
| 24 | 10.9 | 7:00 | 5:55 |
| 25 | 10.9 | 7:00 | 5:55 |
| 26 | 10.9 | 7:01 | 5:56 |
| 27 | 10.9 | 7:01 | 5:56 |
| 28 | 10.9 | 7:01 | 5:57 |
| 29 | 10.9 | 7:02 | 5:57 |
| 30 | 10.9 | 7:02 | 5:58 |
| 31 | 10.9 | 7:03 | 5:59 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.57 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 6.69 kWh/m² in June across the year — December's 4.57 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) | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 |
| 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 | 4.6 | Bright |
| 2 | 4.6 | Bright |
| 3 | 4.6 | Bright |
| 4 | 4.6 | Bright |
| 5 | 4.6 | Bright |
| 6 | 4.6 | Bright |
| 7 | 4.6 | Bright |
| 8 | 4.6 | Bright |
| 9 | 4.6 | Bright |
| 10 | 4.6 | Bright |
| 11 | 4.6 | Bright |
| 12 | 4.6 | Bright |
| 13 | 4.6 | Bright |
| 14 | 4.6 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.6 | Bright |
| 24 | 4.6 | Bright |
| 25 | 4.6 | Bright |
| 26 | 4.6 | Bright |
| 27 | 4.6 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.6 | Bright |
| 30 | 4.6 | Bright |
| 31 | 4.6 | Bright |
Hazard calendar for Yauco
None of Yauco's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Yauco sits in the Atlantic hurricane belt; the season peaks August–October.
Yauco's rainy season runs July–November, when most of the year's rain falls.
Yauco sees seasonal dust haze (July), heaviest in July.
Is December a good time to visit Yauco?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is one of the better times to visit Yauco for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Yauco in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Yauco sees daytime highs around 27°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.
Sea temperature near Yauco 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 18 km away) is warmest in September at about 29°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 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Yauco 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 Yauco peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 | 10 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Yauco 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 Yauco is worst in July — around 25 µg/m³ PM2.5 (moderate), about 4.8× the cleanest month (January, 5 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) | 5 | 7 | 7 | 8 | 15 | 25 | 25 | 20 | 15 | 15 | 8 | 5 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 5 | Good |
| Feb | 7 | Good |
| Mar | 7 | Good |
| Apr | 8 | Good |
| May | 15 | Moderate |
| Jun | 25 | Moderate |
| Jul | 25 | Moderate |
| Aug | 20 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 8 | Good |
| Dec | 5 | Good |
Where is Yauco?
Yauco sits at 18.0°N, 66.8°W, 40 m above sea level, in Puerto Rico. The nearest listed city is San Germán, 21 km away.
Topography around Yauco
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yauco.
Within 3 km, the terrain around Yauco has only modest variations in elevation — a maximum elevation change of 215 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,191 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,307 m.
The land around Yauco is covered by trees (56%) and artificial surfaces (25%) within 3 km, trees (60%) and water (21%) within 16 km, and water (60%) and trees (31%) within 80 km.
Puerto Rico travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 78% of US
- price level, 2025
- GDP per capita
- $40,620
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2015
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 14.6
- per 100k, 2023
- Income group
- High
- World Bank
- 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 Yauco (18.035°, -66.8499°, elevation 40 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).