Guayama weather in May
In May, Guayama sees average daytime highs of 27°C and overnight lows near 24°C, with 116 mm of rain across 22.5 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 4th-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 23% of the time in May, and the air most often feels oppressive.
Daylight stretches from about 12 h 36 min at the start of May to 13 hours by month's end. Set against the rest of the year, May is Guayama's 11th-clearest and 9th-windiest month. For the whole year in context, see Guayama's year-round climate.
- Daytime high
- 27°
- 7th warmest
- Overnight low
- 24°
- 6th coldest
- Rainfall
- 116 mm
- 22.5 wet days
- Daylight
- 12 h 48 min
- 5:55 AM – 6:46 PM
- Cloud cover
- 64%
- 11th clearest
- Wind
- 16 km/h
- 9th windiest
- Solar energy
- 6.37 kWh/m²
- Travel score
- 4.7
- out of 10
Temperature in May
Day-to-day highs hold fairly steady near 27°C through the month.
A typical May day in Guayama reaches about 27°C in the afternoon and slips back to 24°C overnight — a 3°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, May runs on par with April and on par with June.
| 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) | 26 | 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 | 27 | 27 | 27 |
| 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 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 24 |
| 2 | 27 | 24 |
| 3 | 27 | 24 |
| 4 | 27 | 24 |
| 5 | 27 | 24 |
| 6 | 27 | 24 |
| 7 | 27 | 24 |
| 8 | 27 | 24 |
| 9 | 27 | 24 |
| 10 | 27 | 24 |
| 11 | 27 | 24 |
| 12 | 27 | 24 |
| 13 | 27 | 24 |
| 14 | 27 | 24 |
| 15 | 27 | 24 |
| 16 | 27 | 24 |
| 17 | 27 | 24 |
| 18 | 27 | 24 |
| 19 | 27 | 24 |
| 20 | 27 | 24 |
| 21 | 27 | 24 |
| 22 | 27 | 24 |
| 23 | 27 | 24 |
| 24 | 27 | 24 |
| 25 | 27 | 24 |
| 26 | 27 | 24 |
| 27 | 27 | 25 |
| 28 | 27 | 25 |
| 29 | 27 | 25 |
| 30 | 27 | 25 |
| 31 | 27 | 25 |
How May really feels in Guayama
Once humidity and wind are folded in, May 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.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Guayama weather by month
How May compares with the rest of the year at a glance. May is the 7th-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 | 25° / 23° | 48 | 16.5 | 11 | 6.2 |
| Feb | 25° / 23° | 38 | 14.7 | 11.4 | 6.3 |
| Mar | 26° / 23° | 46 | 14.4 | 11.9 | 6.4 |
| Apr | 26° / 23° | 63 | 17.1 | 12.4 | 5.7 |
| May | 27° / 24° | 116 | 22.5 | 12.8 | 4.7 |
| Jun | 28° / 25° | 95 | 21.9 | 13.1 | 4.6 |
| Jul | 28° / 25° | 113 | 23 | 13 | 4.6 |
| Aug | 28° / 25° | 130 | 24.7 | 12.6 | 4.2 |
| Sep | 28° / 25° | 167 | 24.9 | 12.1 | 3.9 |
| Oct | 28° / 25° | 146 | 25.1 | 11.6 | 4.2 |
| Nov | 27° / 24° | 113 | 21.2 | 11.2 | 4.9 |
| Dec | 26° / 23° | 60 | 17.7 | 10.9 | 5.9 |
Cloud cover in May
The sky is clear or mostly clear about 23% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 54%. 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 (%) | 64 | 63 | 61 | 60 | 57 | 56 | 54 | 53 | 50 | 49 | 47 | 45 | 45 | 43 | 43 | 42 | 41 | 41 | 40 | 40 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 41 | 41 | 42 | 42 |
| Cloudier (%) | 36 | 37 | 39 | 40 | 43 | 44 | 46 | 47 | 50 | 51 | 53 | 55 | 55 | 57 | 57 | 58 | 59 | 59 | 60 | 60 | 61 | 61 | 60 | 60 | 60 | 59 | 59 | 59 | 59 | 58 | 58 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 64 | 36 |
| 2 | 63 | 37 |
| 3 | 61 | 39 |
| 4 | 60 | 40 |
| 5 | 57 | 43 |
| 6 | 56 | 44 |
| 7 | 54 | 46 |
| 8 | 53 | 47 |
| 9 | 50 | 50 |
| 10 | 49 | 51 |
| 11 | 47 | 53 |
| 12 | 45 | 55 |
| 13 | 45 | 55 |
| 14 | 43 | 57 |
| 15 | 43 | 57 |
| 16 | 42 | 58 |
| 17 | 41 | 59 |
| 18 | 41 | 59 |
| 19 | 40 | 60 |
| 20 | 40 | 60 |
| 21 | 39 | 61 |
| 22 | 39 | 61 |
| 23 | 40 | 60 |
| 24 | 40 | 60 |
| 25 | 40 | 60 |
| 26 | 41 | 59 |
| 27 | 41 | 59 |
| 28 | 41 | 59 |
| 29 | 41 | 59 |
| 30 | 42 | 58 |
| 31 | 42 | 58 |
Chance of precipitation in May
Guayama gets around 116 mm of rain over 22.5 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 72% and peaks near 77% 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 (%) | 65 | 66 | 67 | 68 | 69 | 69 | 70 | 71 | 71 | 72 | 73 | 73 | 73 | 74 | 74 | 74 | 74 | 73 | 73 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 76 | 76 | 76 | 77 |
| Rain chance (%) | |
|---|---|
| 1 | 65 |
| 2 | 66 |
| 3 | 67 |
| 4 | 68 |
| 5 | 69 |
| 6 | 69 |
| 7 | 70 |
| 8 | 71 |
| 9 | 71 |
| 10 | 72 |
| 11 | 73 |
| 12 | 73 |
| 13 | 73 |
| 14 | 74 |
| 15 | 74 |
| 16 | 74 |
| 17 | 74 |
| 18 | 73 |
| 19 | 73 |
| 20 | 73 |
| 21 | 73 |
| 22 | 74 |
| 23 | 74 |
| 24 | 74 |
| 25 | 75 |
| 26 | 75 |
| 27 | 75 |
| 28 | 76 |
| 29 | 76 |
| 30 | 76 |
| 31 | 77 |
Humidity in May
Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the oppressive band about 91% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 1 | 1 | 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 | 0 | 0 | 0 |
| Muggy (%) | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Oppressive (%) | 83 | 84 | 86 | 87 | 88 | 89 | 89 | 90 | 91 | 92 | 92 | 93 | 94 | 93 | 94 | 94 | 94 | 94 | 93 | 94 | 93 | 93 | 92 | 92 | 91 | 90 | 90 | 89 | 88 | 88 | 87 |
| Miserable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 11 | 11 | 12 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 15 | 83 | 1 |
| 2 | 1 | 14 | 84 | 1 |
| 3 | 0 | 13 | 86 | 1 |
| 4 | 0 | 12 | 87 | 1 |
| 5 | 0 | 11 | 88 | 1 |
| 6 | 0 | 10 | 89 | 1 |
| 7 | 0 | 10 | 89 | 1 |
| 8 | 0 | 9 | 90 | 1 |
| 9 | 0 | 8 | 91 | 1 |
| 10 | 0 | 7 | 92 | 1 |
| 11 | 0 | 6 | 92 | 2 |
| 12 | 0 | 5 | 93 | 2 |
| 13 | 0 | 4 | 94 | 2 |
| 14 | 0 | 4 | 93 | 3 |
| 15 | 0 | 3 | 94 | 3 |
| 16 | 0 | 3 | 94 | 3 |
| 17 | 0 | 2 | 94 | 4 |
| 18 | 0 | 2 | 94 | 4 |
| 19 | 0 | 2 | 93 | 5 |
| 20 | 0 | 1 | 94 | 5 |
| 21 | 0 | 1 | 93 | 6 |
| 22 | 0 | 1 | 93 | 6 |
| 23 | 0 | 1 | 92 | 7 |
| 24 | 0 | 1 | 92 | 7 |
| 25 | 0 | 1 | 91 | 8 |
| 26 | 0 | 1 | 90 | 9 |
| 27 | 0 | 1 | 90 | 9 |
| 28 | 0 | 1 | 89 | 10 |
| 29 | 0 | 1 | 88 | 11 |
| 30 | 0 | 1 | 88 | 11 |
| 31 | 0 | 1 | 87 | 12 |
Wind in May
Winds average 16 km/h in May.
Across May, daily wind ranges from about 15 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) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 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 | 16 | light breeze |
| 2 | 16 | light breeze |
| 3 | 16 | light breeze |
| 4 | 16 | light breeze |
| 5 | 16 | light breeze |
| 6 | 16 | light breeze |
| 7 | 16 | light breeze |
| 8 | 16 | light breeze |
| 9 | 16 | light breeze |
| 10 | 16 | light breeze |
| 11 | 16 | light breeze |
| 12 | 16 | light breeze |
| 13 | 16 | light breeze |
| 14 | 16 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | 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 | 15 | light breeze |
| 26 | 15 | light breeze |
| 27 | 15 | light breeze |
| 28 | 15 | light breeze |
| 29 | 16 | light breeze |
| 30 | 16 | light breeze |
| 31 | 16 | light breeze |
Sunrise & sunset in May
Daylight runs from about 12 h 36 min at the start of May to 13 hours by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over May. Sunrise moves from 6:02 AM to 5:52 AM, and sunset from 6:41 PM to 6:52 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) | 12.6 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 |
| Sunrise (AM) | 6:02 | 6:02 | 6:01 | 6:01 | 6:00 | 6:00 | 5:59 | 5:59 | 5:58 | 5:58 | 5:57 | 5:57 | 5:57 | 5:56 | 5:56 | 5:55 | 5:55 | 5:55 | 5:54 | 5:54 | 5:54 | 5:54 | 5:53 | 5:53 | 5:53 | 5:53 | 5:53 | 5:53 | 5:52 | 5:52 | 5:52 |
| Sunset (PM) | 6:41 | 6:41 | 6:42 | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 | 6:45 | 6:45 | 6:45 | 6:46 | 6:46 | 6:46 | 6:47 | 6:47 | 6:47 | 6:48 | 6:48 | 6:49 | 6:49 | 6:49 | 6:50 | 6:50 | 6:50 | 6:51 | 6:51 | 6:52 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.6 | 6:02 | 6:41 |
| 2 | 12.7 | 6:02 | 6:41 |
| 3 | 12.7 | 6:01 | 6:42 |
| 4 | 12.7 | 6:01 | 6:42 |
| 5 | 12.7 | 6:00 | 6:42 |
| 6 | 12.7 | 6:00 | 6:42 |
| 7 | 12.7 | 5:59 | 6:43 |
| 8 | 12.7 | 5:59 | 6:43 |
| 9 | 12.8 | 5:58 | 6:44 |
| 10 | 12.8 | 5:58 | 6:44 |
| 11 | 12.8 | 5:57 | 6:44 |
| 12 | 12.8 | 5:57 | 6:45 |
| 13 | 12.8 | 5:57 | 6:45 |
| 14 | 12.8 | 5:56 | 6:45 |
| 15 | 12.8 | 5:56 | 6:46 |
| 16 | 12.8 | 5:55 | 6:46 |
| 17 | 12.9 | 5:55 | 6:46 |
| 18 | 12.9 | 5:55 | 6:47 |
| 19 | 12.9 | 5:54 | 6:47 |
| 20 | 12.9 | 5:54 | 6:47 |
| 21 | 12.9 | 5:54 | 6:48 |
| 22 | 12.9 | 5:54 | 6:48 |
| 23 | 12.9 | 5:53 | 6:49 |
| 24 | 12.9 | 5:53 | 6:49 |
| 25 | 12.9 | 5:53 | 6:49 |
| 26 | 12.9 | 5:53 | 6:50 |
| 27 | 13.0 | 5:53 | 6:50 |
| 28 | 13.0 | 5:53 | 6:50 |
| 29 | 13.0 | 5:52 | 6:51 |
| 30 | 13.0 | 5:52 | 6:51 |
| 31 | 13.0 | 5:52 | 6:52 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.37 kWh/m².
For context, solar energy here swings from a low near 4.43 kWh/m² to a high of 6.54 kWh/m² in April across the year — May's 6.37 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 | 6.4 | 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 |
| 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 | 6.4 | Intense |
| 15 | 6.4 | Intense |
| 16 | 6.4 | Intense |
| 17 | 6.4 | Intense |
| 18 | 6.4 | Intense |
| 19 | 6.4 | Intense |
| 20 | 6.4 | Intense |
| 21 | 6.4 | Intense |
| 22 | 6.4 | Intense |
| 23 | 6.4 | Intense |
| 24 | 6.4 | Intense |
| 25 | 6.4 | Intense |
| 26 | 6.4 | Intense |
| 27 | 6.4 | Intense |
| 28 | 6.4 | Intense |
| 29 | 6.4 | Intense |
| 30 | 6.4 | Intense |
| 31 | 6.4 | Intense |
Hazard calendar for Guayama
None of Guayama's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Guayama sits in the Atlantic hurricane belt; the season peaks August–October.
Guayama sees seasonal dust haze (July), heaviest in July.
Is May a good time to visit Guayama?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Guayama for sightseeing.
What to pack for Guayama in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Guayama sees daytime highs around 27°C and nights near 24°C. Pack rain gear and sun protection. Worth having: light clothes. About 23 days see rain.
Sea temperature near Guayama in May
The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore 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 Guayama in May
Clear-sky midday UV in May 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 Guayama 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 Guayama in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Guayama 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 Guayama?
Guayama sits at 18.0°N, 66.1°W, 73 m above sea level, in Puerto Rico. The nearest listed city is Cayey, 15 km away.
Topography around Guayama
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Guayama.
Within 3 km, the terrain around Guayama has significant variations in elevation — a maximum elevation change of 396 m around an average of 80 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 901 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,308 m.
The land around Guayama is covered by trees (56%) and artificial surfaces (25%) within 3 km, trees (46%) and water (38%) within 16 km, and water (58%) and trees (33%) 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 Guayama (17.9841°, -66.1138°, elevation 73 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).