Carolina weather in October
In October, Carolina sees average daytime highs of 29°C and overnight lows near 25°C, with 125 mm of rain across 20.5 wet days and about 11.6 hours of daylight. It is the 5th-warmest and 2nd-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 30% of the time in October, and the air most often feels oppressive.
Daylight stretches from about 11 h 48 min at the start of October to 11 h 18 min by month's end. Set against the rest of the year, October is Carolina's 9th-clearest and 12th-windiest month. For the whole year in context, see Carolina's year-round climate.
- Daytime high
- 29°
- 5th warmest
- Overnight low
- 25°
- 8th coldest
- Rainfall
- 125 mm
- 20.5 wet days
- Daylight
- 11 h 36 min
- 6:22 AM – 5:56 PM
- Cloud cover
- 60%
- 9th clearest
- Wind
- 11 km/h
- 12th windiest
- Solar energy
- 5.21 kWh/m²
- Travel score
- 4.0
- out of 10
Temperature in October
Day-to-day highs hold fairly steady near 29°C through the month.
A typical October day in Carolina reaches about 29°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 28°C and 31°C. Set against its neighbours, October runs on par with September and about 1°C warmer than November.
| 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 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| 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 | 29 | 25 |
| 19 | 29 | 25 |
| 20 | 29 | 25 |
| 21 | 29 | 25 |
| 22 | 29 | 25 |
| 23 | 29 | 25 |
| 24 | 29 | 25 |
| 25 | 29 | 25 |
| 26 | 29 | 25 |
| 27 | 29 | 25 |
| 28 | 29 | 25 |
| 29 | 29 | 25 |
| 30 | 29 | 25 |
| 31 | 29 | 25 |
How October really feels in Carolina
Once humidity and wind are folded in, October 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 October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Carolina weather by month
How October compares with the rest of the year at a glance. October is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 23° | 39 | 10.4 | 11 | 6.8 |
| Feb | 27° / 22° | 28 | 7.6 | 11.4 | 7.1 |
| Mar | 28° / 23° | 39 | 8.4 | 11.9 | 6.9 |
| Apr | 28° / 23° | 72 | 11 | 12.4 | 5.8 |
| May | 29° / 24° | 112 | 16.2 | 12.9 | 4.7 |
| Jun | 30° / 25° | 68 | 13.9 | 13.1 | 4.5 |
| Jul | 30° / 25° | 80 | 16.5 | 13 | 4.4 |
| Aug | 30° / 25° | 95 | 18.7 | 12.6 | 4.0 |
| Sep | 30° / 25° | 131 | 20.8 | 12.1 | 3.7 |
| Oct | 29° / 25° | 125 | 20.5 | 11.6 | 4.0 |
| Nov | 28° / 24° | 112 | 18.2 | 11.1 | 4.9 |
| Dec | 27° / 23° | 48 | 12.2 | 10.9 | 6.4 |
Cloud cover in October
The sky is clear or mostly clear about 30% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 21% of October, with mostly cloudy or overcast conditions the remaining 48%. 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 (%) | 45 | 45 | 45 | 45 | 45 | 45 | 47 | 47 | 47 | 47 | 48 | 48 | 50 | 50 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 56 | 57 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 59 |
| Cloudier (%) | 55 | 55 | 55 | 55 | 55 | 55 | 53 | 53 | 53 | 53 | 52 | 52 | 50 | 50 | 50 | 49 | 48 | 47 | 46 | 45 | 44 | 44 | 43 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 41 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 45 | 55 |
| 2 | 45 | 55 |
| 3 | 45 | 55 |
| 4 | 45 | 55 |
| 5 | 45 | 55 |
| 6 | 45 | 55 |
| 7 | 47 | 53 |
| 8 | 47 | 53 |
| 9 | 47 | 53 |
| 10 | 47 | 53 |
| 11 | 48 | 52 |
| 12 | 48 | 52 |
| 13 | 50 | 50 |
| 14 | 50 | 50 |
| 15 | 50 | 50 |
| 16 | 51 | 49 |
| 17 | 52 | 48 |
| 18 | 53 | 47 |
| 19 | 54 | 46 |
| 20 | 55 | 45 |
| 21 | 56 | 44 |
| 22 | 56 | 44 |
| 23 | 57 | 43 |
| 24 | 58 | 42 |
| 25 | 58 | 42 |
| 26 | 58 | 42 |
| 27 | 58 | 42 |
| 28 | 59 | 41 |
| 29 | 59 | 41 |
| 30 | 59 | 41 |
| 31 | 59 | 41 |
Chance of precipitation in October
Carolina gets around 125 mm of rain over 20.5 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 67% and peaks near 70% on the wettest days.
| 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 (%) | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 69 | 69 | 69 | 68 | 67 | 67 | 66 | 65 | 64 | 64 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 65 | 65 | 65 |
| Rain chance (%) | |
|---|---|
| 1 | 70 |
| 2 | 70 |
| 3 | 70 |
| 4 | 70 |
| 5 | 70 |
| 6 | 70 |
| 7 | 70 |
| 8 | 70 |
| 9 | 70 |
| 10 | 69 |
| 11 | 69 |
| 12 | 69 |
| 13 | 68 |
| 14 | 67 |
| 15 | 67 |
| 16 | 66 |
| 17 | 65 |
| 18 | 64 |
| 19 | 64 |
| 20 | 63 |
| 21 | 63 |
| 22 | 63 |
| 23 | 63 |
| 24 | 63 |
| 25 | 63 |
| 26 | 64 |
| 27 | 64 |
| 28 | 64 |
| 29 | 65 |
| 30 | 65 |
| 31 | 65 |
Humidity in October
Most of October feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the oppressive band about 66% 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 (%) | 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 | 1 | 1 | 1 | 1 | 1 | 1 |
| Oppressive (%) | 57 | 57 | 58 | 59 | 59 | 60 | 61 | 61 | 62 | 62 | 63 | 64 | 64 | 65 | 65 | 66 | 66 | 67 | 67 | 68 | 68 | 69 | 70 | 70 | 71 | 71 | 72 | 74 | 75 | 76 | 77 |
| Miserable (%) | 43 | 43 | 42 | 41 | 41 | 40 | 39 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 32 | 31 | 30 | 30 | 29 | 28 | 27 | 25 | 24 | 23 | 22 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 0 | 57 | 43 |
| 2 | 0 | 57 | 43 |
| 3 | 0 | 58 | 42 |
| 4 | 0 | 59 | 41 |
| 5 | 0 | 59 | 41 |
| 6 | 0 | 60 | 40 |
| 7 | 0 | 61 | 39 |
| 8 | 0 | 61 | 39 |
| 9 | 0 | 62 | 38 |
| 10 | 0 | 62 | 38 |
| 11 | 0 | 63 | 37 |
| 12 | 0 | 64 | 36 |
| 13 | 0 | 64 | 36 |
| 14 | 0 | 65 | 35 |
| 15 | 0 | 65 | 35 |
| 16 | 0 | 66 | 34 |
| 17 | 0 | 66 | 34 |
| 18 | 0 | 67 | 33 |
| 19 | 0 | 67 | 33 |
| 20 | 0 | 68 | 32 |
| 21 | 0 | 68 | 32 |
| 22 | 0 | 69 | 31 |
| 23 | 0 | 70 | 30 |
| 24 | 0 | 70 | 30 |
| 25 | 0 | 71 | 29 |
| 26 | 1 | 71 | 28 |
| 27 | 1 | 72 | 27 |
| 28 | 1 | 74 | 25 |
| 29 | 1 | 75 | 24 |
| 30 | 1 | 76 | 23 |
| 31 | 1 | 77 | 22 |
Wind in October
Winds average 11 km/h in October, the calmest month.
Across October, daily wind ranges from about 11 km/h on the calmest days to 12 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) | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| 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 | 12 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
| 31 | 12 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 48 min at the start of October to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 30 minutes over October. Sunrise moves from 6:18 AM to 6:27 AM, and sunset from 6:08 PM to 5:47 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) | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.3 |
| Sunrise (AM) | 6:18 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 | 6:19 | 6:19 | 6:20 | 6:20 | 6:20 | 6:20 | 6:21 | 6:21 | 6:21 | 6:22 | 6:22 | 6:22 | 6:23 | 6:23 | 6:23 | 6:24 | 6:24 | 6:24 | 6:25 | 6:25 | 6:26 | 6:26 | 6:26 | 6:27 | 6:27 |
| Sunset (PM) | 6:08 | 6:07 | 6:06 | 6:05 | 6:05 | 6:04 | 6:03 | 6:02 | 6:01 | 6:01 | 6:00 | 5:59 | 5:58 | 5:58 | 5:57 | 5:56 | 5:55 | 5:55 | 5:54 | 5:53 | 5:53 | 5:52 | 5:52 | 5:51 | 5:50 | 5:50 | 5:49 | 5:49 | 5:48 | 5:48 | 5:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.8 | 6:18 | 6:08 |
| 2 | 11.8 | 6:18 | 6:07 |
| 3 | 11.8 | 6:18 | 6:06 |
| 4 | 11.8 | 6:18 | 6:05 |
| 5 | 11.8 | 6:19 | 6:05 |
| 6 | 11.7 | 6:19 | 6:04 |
| 7 | 11.7 | 6:19 | 6:03 |
| 8 | 11.7 | 6:19 | 6:02 |
| 9 | 11.7 | 6:20 | 6:01 |
| 10 | 11.7 | 6:20 | 6:01 |
| 11 | 11.7 | 6:20 | 6:00 |
| 12 | 11.6 | 6:20 | 5:59 |
| 13 | 11.6 | 6:21 | 5:58 |
| 14 | 11.6 | 6:21 | 5:58 |
| 15 | 11.6 | 6:21 | 5:57 |
| 16 | 11.6 | 6:22 | 5:56 |
| 17 | 11.6 | 6:22 | 5:55 |
| 18 | 11.5 | 6:22 | 5:55 |
| 19 | 11.5 | 6:23 | 5:54 |
| 20 | 11.5 | 6:23 | 5:53 |
| 21 | 11.5 | 6:23 | 5:53 |
| 22 | 11.5 | 6:24 | 5:52 |
| 23 | 11.5 | 6:24 | 5:52 |
| 24 | 11.4 | 6:24 | 5:51 |
| 25 | 11.4 | 6:25 | 5:50 |
| 26 | 11.4 | 6:25 | 5:50 |
| 27 | 11.4 | 6:26 | 5:49 |
| 28 | 11.4 | 6:26 | 5:49 |
| 29 | 11.4 | 6:26 | 5:48 |
| 30 | 11.4 | 6:27 | 5:48 |
| 31 | 11.3 | 6:27 | 5:47 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 5.21 kWh/m².
For context, solar energy here swings from a low near 4.34 kWh/m² to a high of 6.56 kWh/m² in June across the year — October's 5.21 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) | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.8 |
| 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 | 5.5 | Bright |
| 2 | 5.5 | Bright |
| 3 | 5.5 | Bright |
| 4 | 5.4 | Bright |
| 5 | 5.4 | Bright |
| 6 | 5.4 | Bright |
| 7 | 5.4 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.3 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.3 | Bright |
| 12 | 5.3 | Bright |
| 13 | 5.3 | Bright |
| 14 | 5.2 | Bright |
| 15 | 5.2 | Bright |
| 16 | 5.2 | Bright |
| 17 | 5.2 | Bright |
| 18 | 5.2 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.1 | Bright |
| 22 | 5.1 | Bright |
| 23 | 5.1 | Bright |
| 24 | 5.0 | Bright |
| 25 | 5.0 | Bright |
| 26 | 5.0 | Bright |
| 27 | 5.0 | Bright |
| 28 | 4.9 | Bright |
| 29 | 4.9 | Bright |
| 30 | 4.9 | Bright |
| 31 | 4.8 | Bright |
Hazard calendar for Carolina
In October, Carolina sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Carolina sits in the Atlantic hurricane belt; the season peaks August–October.
Carolina sees seasonal dust haze (July), heaviest in July.
Is October a good time to visit Carolina?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a reasonable time to visit Carolina for sightseeing.
What to pack for Carolina in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Carolina sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.
Sea temperature near Carolina in October
The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 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 | 27 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | 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 | Warm |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in Carolina in October
Clear-sky midday UV in October peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Carolina peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 | 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 Carolina in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Carolina is worst in July — around 24 µg/m³ PM2.5 (moderate), about 4.6× 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 | 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 | 14 | Moderate |
| Jun | 23 | Moderate |
| Jul | 24 | Moderate |
| Aug | 20 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 8 | Good |
| Dec | 5 | Good |
Where is Carolina?
Carolina sits at 18.4°N, 66.0°W, 16 m above sea level, in Puerto Rico. The nearest listed city is Trujillo Alto, 6.0 km away.
Topography around Carolina
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Carolina.
Within 3 km, the terrain around Carolina has only modest variations in elevation — a maximum elevation change of 112 m around an average of 21 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 851 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,304 m.
The land around Carolina is covered by trees (46%) and artificial surfaces (43%) within 3 km, trees (45%), water (25%) and artificial surfaces (20%) within 16 km, and water (65%) and trees (27%) 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 Carolina (18.3808°, -65.9574°, elevation 16 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).