Fort Pierce weather in September
In September, Fort Pierce sees average daytime highs of 84°F and overnight lows near 78°F, with 6.0 in of rain across 21 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.
Day-to-day highs hold fairly steady near 84°F through the month. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels oppressive.
Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Fort Pierce's 12th-clearest and 9th-windiest month. For the whole year in context, see Fort Pierce's year-round climate.
- Daytime high
- 84°
- 3rd warmest
- Overnight low
- 78°
- 10th coldest
- Rainfall
- 6.0 in
- 21 wet days
- Daylight
- 12 h 12 min
- 6:11 AM – 6:20 PM
- Cloud cover
- 67%
- 12th clearest
- Wind
- 9 mph
- 9th windiest
- Solar energy
- 4.94 kWh/m²
- Travel score
- 4.0
- out of 10
Fort Pierce is county seat of St. Lucie County, Florida, United States.
- Density
- 587/km²
- people per km²
- Founded
- 1901
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 84°F through the month.
A typical September day in Fort Pierce reaches about 84°F in the afternoon and slips back to 78°F overnight — a 6°F spread between the day's warmth and the night's chill. On most days the high lands between 82°F and 86°F. Set against its neighbours, September runs about 2°F cooler than August and about 3°F warmer than October.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 83 | 83 | 83 | 83 | 83 | 83 |
| Avg low (°F) | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 77 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 85 | 78 |
| 2 | 85 | 78 |
| 3 | 85 | 78 |
| 4 | 85 | 78 |
| 5 | 85 | 78 |
| 6 | 85 | 78 |
| 7 | 85 | 78 |
| 8 | 85 | 78 |
| 9 | 85 | 78 |
| 10 | 84 | 78 |
| 11 | 84 | 78 |
| 12 | 84 | 78 |
| 13 | 84 | 78 |
| 14 | 84 | 78 |
| 15 | 84 | 78 |
| 16 | 84 | 78 |
| 17 | 84 | 78 |
| 18 | 84 | 78 |
| 19 | 84 | 78 |
| 20 | 84 | 78 |
| 21 | 84 | 78 |
| 22 | 84 | 78 |
| 23 | 84 | 78 |
| 24 | 84 | 77 |
| 25 | 83 | 77 |
| 26 | 83 | 77 |
| 27 | 83 | 77 |
| 28 | 83 | 77 |
| 29 | 83 | 77 |
| 30 | 83 | 77 |
How September really feels in Fort Pierce
Once humidity and wind are folded in, September averages 26 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Fort Pierce weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 71° / 62° | 2.1 | 7.2 | 10.5 | 7.1 |
| Feb | 73° / 63° | 1.8 | 6.8 | 11 | 7.3 |
| Mar | 75° / 65° | 2.3 | 7.5 | 11.8 | 7.5 |
| Apr | 78° / 69° | 2.2 | 7.9 | 12.6 | 7.2 |
| May | 82° / 74° | 3.0 | 11 | 13.3 | 6.3 |
| Jun | 84° / 77° | 5.6 | 19.8 | 13.7 | 4.2 |
| Jul | 86° / 78° | 4.6 | 20.9 | 13.6 | 3.8 |
| Aug | 86° / 79° | 5.7 | 23 | 13 | 3.5 |
| Sep | 84° / 78° | 6.0 | 21 | 12.2 | 4.0 |
| Oct | 81° / 74° | 4.3 | 13.3 | 11.3 | 5.9 |
| Nov | 76° / 69° | 2.2 | 9.3 | 10.6 | 7.1 |
| Dec | 73° / 65° | 1.7 | 7.3 | 10.3 | 7.2 |
Cloud cover in September
The sky is clear or mostly clear about 24% of the time in September, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 60%. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 32 | 32 | 32 | 32 | 33 | 34 | 34 | 36 | 36 | 38 | 39 | 40 | 40 | 42 | 43 | 43 | 44 | 44 | 43 | 43 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 44 | 44 |
| Cloudier (%) | 68 | 68 | 68 | 68 | 67 | 66 | 66 | 64 | 64 | 62 | 61 | 60 | 60 | 58 | 57 | 57 | 56 | 56 | 57 | 57 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 57 | 56 | 56 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 32 | 68 |
| 2 | 32 | 68 |
| 3 | 32 | 68 |
| 4 | 32 | 68 |
| 5 | 33 | 67 |
| 6 | 34 | 66 |
| 7 | 34 | 66 |
| 8 | 36 | 64 |
| 9 | 36 | 64 |
| 10 | 38 | 62 |
| 11 | 39 | 61 |
| 12 | 40 | 60 |
| 13 | 40 | 60 |
| 14 | 42 | 58 |
| 15 | 43 | 57 |
| 16 | 43 | 57 |
| 17 | 44 | 56 |
| 18 | 44 | 56 |
| 19 | 43 | 57 |
| 20 | 43 | 57 |
| 21 | 44 | 56 |
| 22 | 44 | 56 |
| 23 | 44 | 56 |
| 24 | 44 | 56 |
| 25 | 43 | 57 |
| 26 | 43 | 57 |
| 27 | 43 | 57 |
| 28 | 43 | 57 |
| 29 | 44 | 56 |
| 30 | 44 | 56 |
Chance of precipitation in September
Fort Pierce gets around 6.0 in of rain over 21 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 69% and peaks near 77% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 76 | 76 | 77 | 76 | 76 | 76 | 75 | 75 | 74 | 73 | 72 | 71 | 70 | 69 | 68 | 68 | 67 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 64 | 63 | 63 | 62 |
| Rain chance (%) | |
|---|---|
| 1 | 76 |
| 2 | 76 |
| 3 | 77 |
| 4 | 76 |
| 5 | 76 |
| 6 | 76 |
| 7 | 75 |
| 8 | 75 |
| 9 | 74 |
| 10 | 73 |
| 11 | 72 |
| 12 | 71 |
| 13 | 70 |
| 14 | 69 |
| 15 | 68 |
| 16 | 68 |
| 17 | 67 |
| 18 | 66 |
| 19 | 66 |
| 20 | 65 |
| 21 | 65 |
| 22 | 65 |
| 23 | 65 |
| 24 | 65 |
| 25 | 64 |
| 26 | 64 |
| 27 | 64 |
| 28 | 63 |
| 29 | 63 |
| 30 | 62 |
Humidity in September
Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the oppressive band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 99% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 4 |
| Muggy (%) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 11 | 12 | 13 | 13 | 14 | 15 |
| Oppressive (%) | 49 | 50 | 52 | 54 | 55 | 56 | 58 | 60 | 61 | 62 | 63 | 64 | 64 | 65 | 65 | 66 | 65 | 66 | 65 | 65 | 65 | 65 | 65 | 64 | 65 | 65 | 63 | 64 | 62 | 62 |
| Miserable (%) | 49 | 48 | 46 | 44 | 43 | 41 | 39 | 37 | 36 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 28 | 27 | 27 | 26 | 25 | 25 | 24 | 23 | 22 | 21 | 21 | 20 | 20 | 19 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 0 | 2 | 49 | 49 |
| 2 | 0 | 2 | 50 | 48 |
| 3 | 0 | 2 | 52 | 46 |
| 4 | 0 | 2 | 54 | 44 |
| 5 | 0 | 2 | 55 | 43 |
| 6 | 0 | 3 | 56 | 41 |
| 7 | 0 | 3 | 58 | 39 |
| 8 | 0 | 3 | 60 | 37 |
| 9 | 0 | 3 | 61 | 36 |
| 10 | 0 | 4 | 62 | 34 |
| 11 | 0 | 4 | 63 | 33 |
| 12 | 0 | 4 | 64 | 32 |
| 13 | 0 | 5 | 64 | 31 |
| 14 | 0 | 5 | 65 | 30 |
| 15 | 0 | 6 | 65 | 29 |
| 16 | 0 | 6 | 66 | 28 |
| 17 | 0 | 7 | 65 | 28 |
| 18 | 0 | 7 | 66 | 27 |
| 19 | 0 | 8 | 65 | 27 |
| 20 | 1 | 8 | 65 | 26 |
| 21 | 1 | 9 | 65 | 25 |
| 22 | 1 | 9 | 65 | 25 |
| 23 | 1 | 10 | 65 | 24 |
| 24 | 2 | 11 | 64 | 23 |
| 25 | 2 | 11 | 65 | 22 |
| 26 | 2 | 12 | 65 | 21 |
| 27 | 3 | 13 | 63 | 21 |
| 28 | 3 | 13 | 64 | 20 |
| 29 | 4 | 14 | 62 | 20 |
| 30 | 4 | 15 | 62 | 19 |
Wind in September
Winds average 9 mph in September.
Across September, daily wind ranges from about 8 mph on the calmest days to 9 mph 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 9 | light breeze |
| 12 | 9 | light breeze |
| 13 | 9 | light breeze |
| 14 | 9 | light breeze |
| 15 | 9 | light breeze |
| 16 | 9 | light breeze |
| 17 | 9 | light breeze |
| 18 | 9 | light breeze |
| 19 | 9 | light breeze |
| 20 | 9 | light breeze |
| 21 | 9 | light breeze |
| 22 | 9 | light breeze |
| 23 | 9 | light breeze |
| 24 | 9 | light breeze |
| 25 | 9 | light breeze |
| 26 | 9 | light breeze |
| 27 | 9 | light breeze |
| 28 | 9 | light breeze |
| 29 | 9 | light breeze |
| 30 | 9 | light breeze |
Sunrise & sunset in September
Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 48 minutes over September. Sunrise moves from 6:04 AM to 6:18 AM, and sunset from 6:38 PM to 6:04 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.6 | 12.5 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 |
| Sunrise (AM) | 6:04 | 6:04 | 6:05 | 6:05 | 6:06 | 6:06 | 6:07 | 6:07 | 6:08 | 6:08 | 6:09 | 6:09 | 6:09 | 6:10 | 6:10 | 6:11 | 6:11 | 6:12 | 6:12 | 6:13 | 6:13 | 6:14 | 6:14 | 6:15 | 6:15 | 6:16 | 6:16 | 6:17 | 6:17 | 6:18 |
| Sunset (PM) | 6:38 | 6:37 | 6:36 | 6:35 | 6:34 | 6:32 | 6:31 | 6:30 | 6:29 | 6:28 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:20 | 6:19 | 6:18 | 6:17 | 6:16 | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:08 | 6:07 | 6:06 | 6:05 | 6:04 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.6 | 6:04 | 6:38 |
| 2 | 12.5 | 6:04 | 6:37 |
| 3 | 12.5 | 6:05 | 6:36 |
| 4 | 12.5 | 6:05 | 6:35 |
| 5 | 12.5 | 6:06 | 6:34 |
| 6 | 12.4 | 6:06 | 6:32 |
| 7 | 12.4 | 6:07 | 6:31 |
| 8 | 12.4 | 6:07 | 6:30 |
| 9 | 12.4 | 6:08 | 6:29 |
| 10 | 12.3 | 6:08 | 6:28 |
| 11 | 12.3 | 6:09 | 6:26 |
| 12 | 12.3 | 6:09 | 6:25 |
| 13 | 12.2 | 6:09 | 6:24 |
| 14 | 12.2 | 6:10 | 6:23 |
| 15 | 12.2 | 6:10 | 6:22 |
| 16 | 12.2 | 6:11 | 6:20 |
| 17 | 12.1 | 6:11 | 6:19 |
| 18 | 12.1 | 6:12 | 6:18 |
| 19 | 12.1 | 6:12 | 6:17 |
| 20 | 12.0 | 6:13 | 6:16 |
| 21 | 12.0 | 6:13 | 6:14 |
| 22 | 12.0 | 6:14 | 6:13 |
| 23 | 12.0 | 6:14 | 6:12 |
| 24 | 11.9 | 6:15 | 6:11 |
| 25 | 11.9 | 6:15 | 6:10 |
| 26 | 11.9 | 6:16 | 6:08 |
| 27 | 11.9 | 6:16 | 6:07 |
| 28 | 11.8 | 6:17 | 6:06 |
| 29 | 11.8 | 6:17 | 6:05 |
| 30 | 11.8 | 6:18 | 6:04 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.94 kWh/m².
For context, solar energy here swings from a low near 3.05 kWh/m² to a high of 6.41 kWh/m² in May across the year — September's 4.94 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.5 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.2 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.1 | Bright |
| 9 | 5.1 | Bright |
| 10 | 5.1 | Bright |
| 11 | 5.1 | Bright |
| 12 | 5.0 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.0 | Bright |
| 15 | 5.0 | Bright |
| 16 | 5.0 | Bright |
| 17 | 4.9 | Bright |
| 18 | 4.9 | Bright |
| 19 | 4.9 | Bright |
| 20 | 4.8 | Bright |
| 21 | 4.8 | Bright |
| 22 | 4.8 | Bright |
| 23 | 4.8 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.6 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.6 | Bright |
| 30 | 4.5 | Bright |
Hazard calendar for Fort Pierce
In September, Fort Pierce sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Fort Pierce sits in the Atlantic hurricane belt; the season peaks August–October.
Fort Pierce's rainy season runs May–October, when most of the year's rain falls.
Is September a good time to visit Fort Pierce?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Fort Pierce for sightseeing.
What to pack for Fort Pierce in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Fort Pierce sees daytime highs around 84°F and nights near 78°F. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.
Sea temperature near Fort Pierce in September
The nearest coast averages about 84°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 13 mi away) is warmest in August at about 84°F and coldest in February near 74°F.
The water stays above 68°F all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 74 | 74 | 74 | 76 | 79 | 82 | 83 | 84 | 84 | 82 | 79 | 77 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Warm | Tropical | Tropical | Tropical | Warm | Warm | Warm |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 74 | Refreshing |
| Feb | 74 | Refreshing |
| Mar | 74 | Refreshing |
| Apr | 76 | Warm |
| May | 79 | Warm |
| Jun | 82 | Warm |
| Jul | 83 | Tropical |
| Aug | 84 | Tropical |
| Sep | 84 | Tropical |
| Oct | 82 | Warm |
| Nov | 79 | Warm |
| Dec | 77 | Warm |
UV index in Fort Pierce in September
Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Fort Pierce peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).
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) | 5 | 7 | 9 | 9 | 10 | 11 | 11 | 10 | 9 | 8 | 5 | 4 |
| Level | Moderate | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 5 | Moderate |
| Feb | 7 | High |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 10 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Extreme |
| Sep | 9 | Very high |
| Oct | 8 | Very high |
| Nov | 5 | High |
| Dec | 4 | Moderate |
Air quality in Fort Pierce in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Fort Pierce is worst in July — around 17 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 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) | 6 | 7 | 9 | 10 | 10 | 14 | 17 | 15 | 10 | 8 | 6 | 6 |
| Level | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 7 | Good |
| Mar | 9 | Good |
| Apr | 10 | Good |
| May | 10 | Good |
| Jun | 14 | Moderate |
| Jul | 17 | Moderate |
| Aug | 15 | Moderate |
| Sep | 10 | Good |
| Oct | 8 | Good |
| Nov | 6 | Good |
| Dec | 6 | Good |
Where is Fort Pierce?
Fort Pierce sits at 27.4°N, 80.3°W, 16 ft above sea level, in United States. The nearest listed city is Florida Ridge, 9.9 mi away.
Topography around Fort Pierce
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fort Pierce.
Within 2 miles, the terrain around Fort Pierce has only modest variations in elevation — a maximum elevation change of 46 ft around an average of 13 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 148 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 200 ft.
The land around Fort Pierce is covered by water (38%) and artificial surfaces (30%) within 2 miles, water (44%), grassland (22%) and trees (20%) within 10 miles, and water (40%), grassland (28%) and trees (20%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- 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 Fort Pierce (27.4467°, -80.3256°, elevation 16 ft), 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).