Arecibo weather in July
In July, Arecibo sees average daytime highs of 30°C and overnight lows near 25°C, with 79 mm of rain across 14.9 wet days and about 13 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 32% of the time in July, and the air most often feels oppressive.
Daylight stretches from about 13 h 06 min at the start of July to 12 h 54 min by month's end. Set against the rest of the year, July is Arecibo's 7th-clearest and 1st-windiest month. For the whole year in context, see Arecibo's year-round climate.
- Daytime high
- 30°
- 2nd warmest
- Overnight low
- 25°
- 11th coldest
- Rainfall
- 79 mm
- 14.9 wet days
- Daylight
- 13 hours
- 6:02 AM – 7:03 PM
- Cloud cover
- 57%
- 7th clearest
- Wind
- 17 km/h
- 1st windiest
- Solar energy
- 6.48 kWh/m²
- Travel score
- 4.5
- out of 10
Temperature in July
Day-to-day highs hold fairly steady near 30°C through the month.
A typical July day in Arecibo reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, July runs on par with June and on par with August.
| 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) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 25 |
| 2 | 30 | 25 |
| 3 | 30 | 25 |
| 4 | 30 | 25 |
| 5 | 30 | 25 |
| 6 | 30 | 25 |
| 7 | 30 | 25 |
| 8 | 30 | 25 |
| 9 | 30 | 25 |
| 10 | 30 | 25 |
| 11 | 30 | 25 |
| 12 | 30 | 25 |
| 13 | 30 | 25 |
| 14 | 30 | 25 |
| 15 | 30 | 25 |
| 16 | 30 | 25 |
| 17 | 30 | 25 |
| 18 | 30 | 25 |
| 19 | 30 | 25 |
| 20 | 30 | 25 |
| 21 | 30 | 25 |
| 22 | 30 | 25 |
| 23 | 30 | 25 |
| 24 | 30 | 25 |
| 25 | 30 | 25 |
| 26 | 30 | 25 |
| 27 | 30 | 25 |
| 28 | 30 | 25 |
| 29 | 30 | 25 |
| 30 | 30 | 25 |
| 31 | 30 | 25 |
How July really feels in Arecibo
Once humidity and wind are folded in, July averages 31 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 July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Arecibo weather by month
How July compares with the rest of the year at a glance. July is the 2nd-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° / 22° | 41 | 9.5 | 11 | 7.0 |
| Feb | 27° / 22° | 36 | 8.1 | 11.4 | 7.0 |
| Mar | 27° / 22° | 59 | 10 | 11.9 | 6.7 |
| Apr | 28° / 22° | 107 | 13.7 | 12.4 | 5.8 |
| May | 29° / 24° | 165 | 18.3 | 12.9 | 4.5 |
| Jun | 30° / 24° | 92 | 13.8 | 13.1 | 4.6 |
| Jul | 30° / 25° | 79 | 14.9 | 13 | 4.5 |
| Aug | 30° / 25° | 101 | 19.6 | 12.6 | 3.9 |
| Sep | 30° / 25° | 154 | 22.3 | 12.1 | 3.6 |
| Oct | 29° / 24° | 138 | 21.4 | 11.6 | 4.0 |
| Nov | 28° / 23° | 113 | 17.5 | 11.1 | 5.2 |
| Dec | 27° / 23° | 48 | 11.4 | 10.9 | 6.6 |
Cloud cover in July
The sky is clear or mostly clear about 32% of the time in July.
Beyond those clear spells, partly cloudy skies cover about 26% of July, with mostly cloudy or overcast conditions the remaining 43%.
| 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 (%) | 57 | 57 | 57 | 57 | 57 | 57 | 58 | 58 | 57 | 57 | 57 | 56 | 56 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 58 | 58 | 59 | 58 | 58 | 58 | 58 | 57 | 57 | 57 | 57 |
| Cloudier (%) | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 41 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 43 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 57 | 43 |
| 2 | 57 | 43 |
| 3 | 57 | 43 |
| 4 | 57 | 43 |
| 5 | 57 | 43 |
| 6 | 57 | 43 |
| 7 | 58 | 42 |
| 8 | 58 | 42 |
| 9 | 57 | 43 |
| 10 | 57 | 43 |
| 11 | 57 | 43 |
| 12 | 56 | 44 |
| 13 | 56 | 44 |
| 14 | 56 | 44 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 56 | 44 |
| 18 | 57 | 43 |
| 19 | 57 | 43 |
| 20 | 57 | 43 |
| 21 | 58 | 42 |
| 22 | 58 | 42 |
| 23 | 59 | 41 |
| 24 | 58 | 42 |
| 25 | 58 | 42 |
| 26 | 58 | 42 |
| 27 | 58 | 42 |
| 28 | 57 | 43 |
| 29 | 57 | 43 |
| 30 | 57 | 43 |
| 31 | 57 | 43 |
Chance of precipitation in July
Arecibo gets around 79 mm of rain over 14.9 wet days in July. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 48% and peaks near 53% 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 (%) | 44 | 45 | 45 | 46 | 46 | 46 | 47 | 47 | 47 | 48 | 48 | 48 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 48 | 49 | 49 | 49 | 49 | 50 | 50 | 51 | 51 | 52 | 53 |
| Rain chance (%) | |
|---|---|
| 1 | 44 |
| 2 | 45 |
| 3 | 45 |
| 4 | 46 |
| 5 | 46 |
| 6 | 46 |
| 7 | 47 |
| 8 | 47 |
| 9 | 47 |
| 10 | 48 |
| 11 | 48 |
| 12 | 48 |
| 13 | 49 |
| 14 | 49 |
| 15 | 49 |
| 16 | 49 |
| 17 | 49 |
| 18 | 49 |
| 19 | 49 |
| 20 | 49 |
| 21 | 48 |
| 22 | 49 |
| 23 | 49 |
| 24 | 49 |
| 25 | 49 |
| 26 | 50 |
| 27 | 50 |
| 28 | 51 |
| 29 | 51 |
| 30 | 52 |
| 31 | 53 |
Humidity in July
Most of July feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the oppressive band about 84% 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 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Oppressive (%) | 87 | 87 | 87 | 87 | 88 | 88 | 88 | 88 | 90 | 90 | 89 | 88 | 88 | 87 | 87 | 86 | 86 | 85 | 84 | 84 | 83 | 82 | 81 | 80 | 79 | 78 | 78 | 77 | 77 | 76 | 76 |
| Miserable (%) | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 15 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 21 | 22 | 22 | 23 | 23 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 1 | 87 | 12 |
| 2 | 1 | 87 | 12 |
| 3 | 1 | 87 | 12 |
| 4 | 1 | 87 | 12 |
| 5 | 1 | 88 | 11 |
| 6 | 1 | 88 | 11 |
| 7 | 1 | 88 | 11 |
| 8 | 1 | 88 | 11 |
| 9 | 0 | 90 | 10 |
| 10 | 0 | 90 | 10 |
| 11 | 0 | 89 | 11 |
| 12 | 1 | 88 | 11 |
| 13 | 1 | 88 | 11 |
| 14 | 1 | 87 | 12 |
| 15 | 1 | 87 | 12 |
| 16 | 1 | 86 | 13 |
| 17 | 1 | 86 | 13 |
| 18 | 1 | 85 | 14 |
| 19 | 1 | 84 | 15 |
| 20 | 1 | 84 | 15 |
| 21 | 1 | 83 | 16 |
| 22 | 1 | 82 | 17 |
| 23 | 1 | 81 | 18 |
| 24 | 1 | 80 | 19 |
| 25 | 1 | 79 | 20 |
| 26 | 1 | 78 | 21 |
| 27 | 1 | 78 | 21 |
| 28 | 1 | 77 | 22 |
| 29 | 1 | 77 | 22 |
| 30 | 1 | 76 | 23 |
| 31 | 1 | 76 | 23 |
Wind in July
Winds average 17 km/h in July, the windiest month of the year.
Across July, daily wind ranges from about 16 km/h on the calmest days to 17 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) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 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 | 17 | 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 | 17 | light breeze |
| 16 | 17 | light breeze |
| 17 | 17 | light breeze |
| 18 | 17 | light breeze |
| 19 | 17 | light breeze |
| 20 | 17 | light breeze |
| 21 | 16 | light breeze |
| 22 | 16 | light breeze |
| 23 | 16 | light breeze |
| 24 | 16 | 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 July
Daylight runs from about 13 h 06 min at the start of July to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over July. Sunrise moves from 5:57 AM to 6:07 AM, and sunset from 7:03 PM to 6:59 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) | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 |
| Sunrise (AM) | 5:57 | 5:58 | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:03 | 6:03 | 6:03 | 6:04 | 6:04 | 6:04 | 6:05 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 |
| Sunset (PM) | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:01 | 7:01 | 7:01 | 7:00 | 7:00 | 7:00 | 6:59 | 6:59 | 6:59 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.1 | 5:57 | 7:03 |
| 2 | 13.1 | 5:58 | 7:03 |
| 3 | 13.1 | 5:58 | 7:03 |
| 4 | 13.1 | 5:58 | 7:03 |
| 5 | 13.1 | 5:58 | 7:03 |
| 6 | 13.1 | 5:59 | 7:03 |
| 7 | 13.1 | 5:59 | 7:03 |
| 8 | 13.1 | 5:59 | 7:03 |
| 9 | 13.1 | 6:00 | 7:03 |
| 10 | 13.1 | 6:00 | 7:03 |
| 11 | 13.0 | 6:00 | 7:03 |
| 12 | 13.0 | 6:01 | 7:03 |
| 13 | 13.0 | 6:01 | 7:03 |
| 14 | 13.0 | 6:01 | 7:03 |
| 15 | 13.0 | 6:02 | 7:03 |
| 16 | 13.0 | 6:02 | 7:03 |
| 17 | 13.0 | 6:03 | 7:03 |
| 18 | 13.0 | 6:03 | 7:02 |
| 19 | 13.0 | 6:03 | 7:02 |
| 20 | 13.0 | 6:04 | 7:02 |
| 21 | 13.0 | 6:04 | 7:02 |
| 22 | 13.0 | 6:04 | 7:02 |
| 23 | 12.9 | 6:05 | 7:01 |
| 24 | 12.9 | 6:05 | 7:01 |
| 25 | 12.9 | 6:05 | 7:01 |
| 26 | 12.9 | 6:06 | 7:00 |
| 27 | 12.9 | 6:06 | 7:00 |
| 28 | 12.9 | 6:06 | 7:00 |
| 29 | 12.9 | 6:07 | 6:59 |
| 30 | 12.9 | 6:07 | 6:59 |
| 31 | 12.9 | 6:07 | 6:59 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.48 kWh/m².
For context, solar energy here swings from a low near 4.4 kWh/m² to a high of 6.53 kWh/m² in June across the year — July's 6.48 kWh/m² sits near the top of that range.
| 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) | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 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 |
| 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 | 6.6 | Intense |
| 2 | 6.6 | Intense |
| 3 | 6.6 | Intense |
| 4 | 6.6 | Intense |
| 5 | 6.6 | Intense |
| 6 | 6.5 | Intense |
| 7 | 6.5 | Intense |
| 8 | 6.5 | Intense |
| 9 | 6.5 | Intense |
| 10 | 6.5 | Intense |
| 11 | 6.5 | Intense |
| 12 | 6.5 | Intense |
| 13 | 6.5 | Intense |
| 14 | 6.5 | Intense |
| 15 | 6.5 | Intense |
| 16 | 6.5 | Intense |
| 17 | 6.5 | Intense |
| 18 | 6.5 | Intense |
| 19 | 6.5 | Intense |
| 20 | 6.5 | Intense |
| 21 | 6.5 | Intense |
| 22 | 6.5 | 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 Arecibo
In July, Arecibo sits inside its atlantic hurricane and dust season. The full year is below, with each hazard's peak months called out.
Arecibo sits in the Atlantic hurricane belt; the season peaks August–October.
Arecibo sees seasonal dust haze (July), heaviest in July.
Is July a good time to visit Arecibo?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Arecibo for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Arecibo in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Arecibo sees daytime highs around 30°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 15 days see rain.
Sea temperature near Arecibo in July
The nearest coast averages about 28°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 km away) is warmest in September at about 29°C and coldest in March 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 | 27 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| 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 | 27 | Warm |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in Arecibo in July
Clear-sky midday UV in July 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 Arecibo peaks around April 12 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 | 12 | 13 | 11 | 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 | 12 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | 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 Arecibo in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Arecibo is worst in July — around 24 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 | 14 | 23 | 24 | 20 | 15 | 15 | 7 | 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 | 14 | Moderate |
| Jun | 23 | Moderate |
| Jul | 24 | Moderate |
| Aug | 20 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 7 | Good |
| Dec | 5 | Good |
Where is Arecibo?
Arecibo sits at 18.5°N, 66.7°W, 7 m above sea level, in Puerto Rico. The nearest listed city is Barceloneta, 19 km away.
Topography around Arecibo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arecibo.
Within 3 km, the terrain around Arecibo has only modest variations in elevation — a maximum elevation change of 80 m around an average of 7 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 408 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,307 m.
The land around Arecibo is covered by water (44%) and trees (20%) within 3 km, water (45%) and trees (35%) within 16 km, and water (55%) and trees (35%) 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 Arecibo (18.4724°, -66.7157°, elevation 7 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).