Cayey weather in August
In August, Cayey sees average daytime highs of 29°C and overnight lows near 24°C, with 96 mm of rain across 18.8 wet days and about 12.6 hours of daylight. It is the 1st-warmest and 4th-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 32% of the time in August, and the air most often feels oppressive.
Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Cayey's 8th-clearest and 6th-windiest month. For the whole year in context, see Cayey's year-round climate.
- Daytime high
- 29°
- 1st warmest
- Overnight low
- 24°
- 12th coldest
- Rainfall
- 96 mm
- 18.8 wet days
- Daylight
- 12 h 36 min
- 6:10 AM – 6:47 PM
- Cloud cover
- 58%
- 8th clearest
- Wind
- 16 km/h
- 6th windiest
- Solar energy
- 6.31 kWh/m²
- Travel score
- 4.6
- out of 10
Temperature in August
Day-to-day highs hold fairly steady near 29°C through the month.
A typical August day in Cayey reaches about 29°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, August runs on par with July and on par with September.
| 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 | 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 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 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 |
| 31 | 29 | 24 |
How August really feels in Cayey
Once humidity and wind are folded in, August averages 7 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Cayey weather by month
How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 22° | 32 | 10.8 | 11 | 6.9 |
| Feb | 26° / 21° | 27 | 9.4 | 11.4 | 7.0 |
| Mar | 26° / 22° | 40 | 10.8 | 11.9 | 6.8 |
| Apr | 27° / 22° | 59 | 13.7 | 12.4 | 6.1 |
| May | 27° / 23° | 98 | 18.2 | 12.8 | 5.3 |
| Jun | 28° / 24° | 64 | 15.9 | 13.1 | 5.2 |
| Jul | 28° / 24° | 75 | 15.5 | 13 | 5.1 |
| Aug | 29° / 24° | 96 | 18.8 | 12.6 | 4.6 |
| Sep | 28° / 24° | 143 | 21.6 | 12.1 | 4.2 |
| Oct | 28° / 24° | 122 | 21.4 | 11.6 | 4.7 |
| Nov | 27° / 23° | 91 | 17 | 11.1 | 5.5 |
| Dec | 26° / 22° | 39 | 11.6 | 10.9 | 6.7 |
Cloud cover in August
The sky is clear or mostly clear about 32% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 45%. 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 (%) | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 61 | 61 | 61 | 60 | 59 | 58 | 57 | 56 | 54 | 53 | 52 | 51 | 50 | 49 | 49 | 48 | 47 | 46 | 46 | 47 | 47 | 47 |
| Cloudier (%) | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 39 | 40 | 41 | 42 | 43 | 44 | 46 | 47 | 48 | 49 | 50 | 51 | 51 | 52 | 53 | 54 | 54 | 53 | 53 | 53 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 62 | 38 |
| 2 | 62 | 38 |
| 3 | 62 | 38 |
| 4 | 62 | 38 |
| 5 | 62 | 38 |
| 6 | 62 | 38 |
| 7 | 62 | 38 |
| 8 | 62 | 38 |
| 9 | 62 | 38 |
| 10 | 61 | 39 |
| 11 | 61 | 39 |
| 12 | 61 | 39 |
| 13 | 60 | 40 |
| 14 | 59 | 41 |
| 15 | 58 | 42 |
| 16 | 57 | 43 |
| 17 | 56 | 44 |
| 18 | 54 | 46 |
| 19 | 53 | 47 |
| 20 | 52 | 48 |
| 21 | 51 | 49 |
| 22 | 50 | 50 |
| 23 | 49 | 51 |
| 24 | 49 | 51 |
| 25 | 48 | 52 |
| 26 | 47 | 53 |
| 27 | 46 | 54 |
| 28 | 46 | 54 |
| 29 | 47 | 53 |
| 30 | 47 | 53 |
| 31 | 47 | 53 |
Chance of precipitation in August
Cayey gets around 96 mm of rain over 18.8 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 61% and peaks near 66% 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 (%) | 53 | 54 | 54 | 55 | 55 | 56 | 56 | 56 | 57 | 57 | 58 | 58 | 59 | 59 | 60 | 61 | 62 | 63 | 63 | 64 | 65 | 65 | 65 | 65 | 66 | 66 | 66 | 66 | 66 | 66 | 66 |
| Rain chance (%) | |
|---|---|
| 1 | 53 |
| 2 | 54 |
| 3 | 54 |
| 4 | 55 |
| 5 | 55 |
| 6 | 56 |
| 7 | 56 |
| 8 | 56 |
| 9 | 57 |
| 10 | 57 |
| 11 | 58 |
| 12 | 58 |
| 13 | 59 |
| 14 | 59 |
| 15 | 60 |
| 16 | 61 |
| 17 | 62 |
| 18 | 63 |
| 19 | 63 |
| 20 | 64 |
| 21 | 65 |
| 22 | 65 |
| 23 | 65 |
| 24 | 65 |
| 25 | 66 |
| 26 | 66 |
| 27 | 66 |
| 28 | 66 |
| 29 | 66 |
| 30 | 66 |
| 31 | 66 |
Humidity in August
Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the oppressive band about 95% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Oppressive (%) | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 95 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 95 |
| Miserable (%) | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 1 | 96 | 3 |
| 2 | 1 | 96 | 3 |
| 3 | 1 | 96 | 3 |
| 4 | 1 | 95 | 4 |
| 5 | 1 | 95 | 4 |
| 6 | 1 | 95 | 4 |
| 7 | 1 | 95 | 4 |
| 8 | 1 | 95 | 4 |
| 9 | 1 | 95 | 4 |
| 10 | 1 | 95 | 4 |
| 11 | 1 | 96 | 3 |
| 12 | 1 | 96 | 3 |
| 13 | 1 | 96 | 3 |
| 14 | 1 | 96 | 3 |
| 15 | 1 | 96 | 3 |
| 16 | 1 | 96 | 3 |
| 17 | 1 | 96 | 3 |
| 18 | 1 | 95 | 4 |
| 19 | 0 | 96 | 4 |
| 20 | 0 | 96 | 4 |
| 21 | 0 | 96 | 4 |
| 22 | 0 | 96 | 4 |
| 23 | 0 | 95 | 5 |
| 24 | 0 | 95 | 5 |
| 25 | 0 | 95 | 5 |
| 26 | 0 | 95 | 5 |
| 27 | 0 | 95 | 5 |
| 28 | 0 | 95 | 5 |
| 29 | 0 | 95 | 5 |
| 30 | 0 | 95 | 5 |
| 31 | 0 | 95 | 5 |
Wind in August
Winds average 16 km/h in August.
Across August, daily wind ranges from about 14 km/h on the calmest days to 18 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) | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 |
| 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 | 18 | light breeze |
| 2 | 17 | light breeze |
| 3 | 17 | light breeze |
| 4 | 17 | light breeze |
| 5 | 17 | light breeze |
| 6 | 17 | light breeze |
| 7 | 17 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 17 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | light breeze |
| 18 | 16 | light breeze |
| 19 | 16 | light breeze |
| 20 | 16 | light breeze |
| 21 | 16 | light breeze |
| 22 | 16 | light breeze |
| 23 | 15 | light breeze |
| 24 | 15 | light breeze |
| 25 | 15 | light breeze |
| 26 | 15 | light breeze |
| 27 | 15 | light breeze |
| 28 | 15 | light breeze |
| 29 | 15 | light breeze |
| 30 | 14 | light breeze |
| 31 | 14 | light breeze |
Sunrise & sunset in August
Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 24 minutes over August. Sunrise moves from 6:06 AM to 6:13 AM, and sunset from 6:55 PM to 6:36 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) | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 |
| Sunrise (AM) | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 | 6:09 | 6:09 | 6:09 | 6:09 | 6:10 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:13 | 6:13 |
| Sunset (PM) | 6:55 | 6:55 | 6:55 | 6:54 | 6:54 | 6:53 | 6:53 | 6:52 | 6:52 | 6:51 | 6:50 | 6:50 | 6:49 | 6:49 | 6:48 | 6:47 | 6:47 | 6:46 | 6:45 | 6:45 | 6:44 | 6:43 | 6:42 | 6:42 | 6:41 | 6:40 | 6:39 | 6:38 | 6:38 | 6:37 | 6:36 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.8 | 6:06 | 6:55 |
| 2 | 12.8 | 6:06 | 6:55 |
| 3 | 12.8 | 6:07 | 6:55 |
| 4 | 12.8 | 6:07 | 6:54 |
| 5 | 12.8 | 6:07 | 6:54 |
| 6 | 12.8 | 6:08 | 6:53 |
| 7 | 12.7 | 6:08 | 6:53 |
| 8 | 12.7 | 6:08 | 6:52 |
| 9 | 12.7 | 6:08 | 6:52 |
| 10 | 12.7 | 6:09 | 6:51 |
| 11 | 12.7 | 6:09 | 6:50 |
| 12 | 12.7 | 6:09 | 6:50 |
| 13 | 12.7 | 6:09 | 6:49 |
| 14 | 12.6 | 6:10 | 6:49 |
| 15 | 12.6 | 6:10 | 6:48 |
| 16 | 12.6 | 6:10 | 6:47 |
| 17 | 12.6 | 6:10 | 6:47 |
| 18 | 12.6 | 6:11 | 6:46 |
| 19 | 12.6 | 6:11 | 6:45 |
| 20 | 12.6 | 6:11 | 6:45 |
| 21 | 12.5 | 6:11 | 6:44 |
| 22 | 12.5 | 6:12 | 6:43 |
| 23 | 12.5 | 6:12 | 6:42 |
| 24 | 12.5 | 6:12 | 6:42 |
| 25 | 12.5 | 6:12 | 6:41 |
| 26 | 12.5 | 6:12 | 6:40 |
| 27 | 12.4 | 6:13 | 6:39 |
| 28 | 12.4 | 6:13 | 6:38 |
| 29 | 12.4 | 6:13 | 6:38 |
| 30 | 12.4 | 6:13 | 6:37 |
| 31 | 12.4 | 6:13 | 6:36 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 6.31 kWh/m².
For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.55 kWh/m² in April across the year — August's 6.31 kWh/m² falls in the middle.
| 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) | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 |
| 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 | 6.5 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.5 | Intense |
| 5 | 6.5 | Intense |
| 6 | 6.5 | Intense |
| 7 | 6.4 | Intense |
| 8 | 6.4 | Intense |
| 9 | 6.4 | Intense |
| 10 | 6.4 | Intense |
| 11 | 6.4 | Intense |
| 12 | 6.4 | Intense |
| 13 | 6.4 | Intense |
| 14 | 6.3 | Intense |
| 15 | 6.3 | Intense |
| 16 | 6.3 | Intense |
| 17 | 6.3 | Intense |
| 18 | 6.3 | Intense |
| 19 | 6.2 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.2 | Intense |
| 24 | 6.2 | Intense |
| 25 | 6.2 | Intense |
| 26 | 6.2 | Intense |
| 27 | 6.1 | Intense |
| 28 | 6.1 | Intense |
| 29 | 6.1 | Intense |
| 30 | 6.1 | Intense |
| 31 | 6.1 | Intense |
Hazard calendar for Cayey
In August, Cayey sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Cayey sits in the Atlantic hurricane belt; the season peaks August–October.
Cayey's rainy season runs May–May, when most of the year's rain falls.
Cayey sees seasonal dust haze (July), heaviest in July.
Is August a good time to visit Cayey?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a reasonable time to visit Cayey for sightseeing.
What to pack for Cayey in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Cayey sees daytime highs around 29°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 19 days see rain.
Sea temperature near Cayey in August
The nearest coast averages about 29°C in August — 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 September at about 29°C and coldest in February 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) | 27 | 26 | 26 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 28 | Warm |
UV index in Cayey in August
Clear-sky midday UV in August 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 Cayey peaks around April 12 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 | 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 | 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 | High |
Air quality in Cayey in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Cayey is worst in July — around 25 µg/m³ PM2.5 (moderate), about 4.7× 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 | 9 | 14 | 24 | 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 | 9 | Good |
| May | 14 | Moderate |
| Jun | 24 | Moderate |
| Jul | 25 | Moderate |
| Aug | 20 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 8 | Good |
| Dec | 5 | Good |
Where is Cayey?
Cayey sits at 18.1°N, 66.2°W, 397 m above sea level, in Puerto Rico. The nearest listed city is Guayama, 15 km away.
Topography around Cayey
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cayey.
Within 3 km, the terrain around Cayey has significant variations in elevation — a maximum elevation change of 462 m around an average of 482 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 892 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,308 m.
The land around Cayey is covered by trees (68%) within 3 km, trees (81%) within 16 km, and water (60%) and trees (32%) 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 Cayey (18.1119°, -66.166°, elevation 397 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).