Key West weather in June
In June, Key West sees average daytime highs of 83°F and overnight lows near 80°F, with 4.1 in of rain across 12.7 wet days and about 13.5 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 83°F through the month. The sky is clear or mostly clear about 38% of the time in June, and the air most often feels oppressive.
Daylight stretches from about 13 h 24 min at the start of June to 13 h 30 min by month's end. Set against the rest of the year, June is Key West's 10th-clearest and 10th-windiest month. For the whole year in context, see Key West's year-round climate.
- Daytime high
- 83°
- 4th warmest
- Overnight low
- 80°
- 9th coldest
- Rainfall
- 4.1 in
- 12.7 wet days
- Daylight
- 13 h 30 min
- 5:42 AM – 7:13 PM
- Cloud cover
- 57%
- 10th clearest
- Wind
- 11 mph
- 10th windiest
- Solar energy
- 6.51 kWh/m²
- Travel score
- 5.7
- out of 10
Key West is county seat of Monroe County, Florida, United States.
- Density
- 1,373/km²
- people per km²
- Founded
- 1828
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in June
Day-to-day highs hold fairly steady near 83°F through the month.
A typical June day in Key West reaches about 83°F in the afternoon and slips back to 80°F overnight — a 3°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 84°F. Set against its neighbours, June runs about 3°F warmer than May and on par with July.
| 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) | 81 | 81 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 |
| Avg low (°F) | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 81 | 81 | 81 | 81 | 81 | 81 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 81 | 79 |
| 2 | 81 | 79 |
| 3 | 82 | 79 |
| 4 | 82 | 79 |
| 5 | 82 | 79 |
| 6 | 82 | 79 |
| 7 | 82 | 79 |
| 8 | 82 | 79 |
| 9 | 82 | 80 |
| 10 | 82 | 80 |
| 11 | 82 | 80 |
| 12 | 82 | 80 |
| 13 | 82 | 80 |
| 14 | 82 | 80 |
| 15 | 83 | 80 |
| 16 | 83 | 80 |
| 17 | 83 | 80 |
| 18 | 83 | 80 |
| 19 | 83 | 80 |
| 20 | 83 | 80 |
| 21 | 83 | 80 |
| 22 | 83 | 80 |
| 23 | 83 | 80 |
| 24 | 83 | 80 |
| 25 | 83 | 81 |
| 26 | 83 | 81 |
| 27 | 83 | 81 |
| 28 | 83 | 81 |
| 29 | 83 | 81 |
| 30 | 83 | 81 |
How June really feels in Key West
Once humidity and wind are folded in, June averages 15 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 June is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Key West weather by month
How June compares with the rest of the year at a glance. June is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 73° / 69° | 1.5 | 5.7 | 10.6 | 7.8 |
| Feb | 73° / 70° | 1.2 | 4 | 11.1 | 8.1 |
| Mar | 74° / 71° | 1.0 | 4.2 | 11.8 | 8.4 |
| Apr | 77° / 74° | 1.5 | 4.5 | 12.6 | 8.3 |
| May | 80° / 77° | 2.6 | 7.9 | 13.2 | 7.3 |
| Jun | 83° / 80° | 4.1 | 12.7 | 13.5 | 5.7 |
| Jul | 84° / 81° | 2.5 | 12.9 | 13.4 | 5.3 |
| Aug | 84° / 81° | 4.1 | 16.1 | 12.9 | 4.8 |
| Sep | 83° / 80° | 5.4 | 17.7 | 12.2 | 4.7 |
| Oct | 81° / 78° | 4.6 | 12.7 | 11.4 | 6.2 |
| Nov | 77° / 74° | 1.5 | 5.8 | 10.8 | 7.8 |
| Dec | 75° / 71° | 1.3 | 5.1 | 10.5 | 8.0 |
Cloud cover in June
The sky is clear or mostly clear about 38% of the time in June.
Beyond those clear spells, partly cloudy skies cover about 15% of June, with mostly cloudy or overcast conditions the remaining 47%. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 58 | 58 | 57 | 55 | 55 | 55 | 54 | 54 | 55 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 48 | 48 | 47 | 47 | 48 | 48 |
| Cloudier (%) | 42 | 42 | 43 | 45 | 45 | 45 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 52 | 53 | 53 | 52 | 52 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 58 | 42 |
| 2 | 58 | 42 |
| 3 | 57 | 43 |
| 4 | 55 | 45 |
| 5 | 55 | 45 |
| 6 | 55 | 45 |
| 7 | 54 | 46 |
| 8 | 54 | 46 |
| 9 | 55 | 45 |
| 10 | 55 | 45 |
| 11 | 55 | 45 |
| 12 | 55 | 45 |
| 13 | 55 | 45 |
| 14 | 56 | 44 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 56 | 44 |
| 18 | 55 | 45 |
| 19 | 54 | 46 |
| 20 | 53 | 47 |
| 21 | 52 | 48 |
| 22 | 51 | 49 |
| 23 | 50 | 50 |
| 24 | 49 | 51 |
| 25 | 48 | 52 |
| 26 | 48 | 52 |
| 27 | 47 | 53 |
| 28 | 47 | 53 |
| 29 | 48 | 52 |
| 30 | 48 | 52 |
Chance of precipitation in June
Key West gets around 4.1 in of rain over 12.7 wet days in June. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 42% and peaks near 45% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 41 | 42 | 43 | 43 | 44 | 44 | 44 | 45 | 44 | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Rain chance (%) | |
|---|---|
| 1 | 41 |
| 2 | 42 |
| 3 | 43 |
| 4 | 43 |
| 5 | 44 |
| 6 | 44 |
| 7 | 44 |
| 8 | 45 |
| 9 | 44 |
| 10 | 44 |
| 11 | 44 |
| 12 | 44 |
| 13 | 43 |
| 14 | 43 |
| 15 | 42 |
| 16 | 42 |
| 17 | 42 |
| 18 | 41 |
| 19 | 41 |
| 20 | 41 |
| 21 | 40 |
| 22 | 40 |
| 23 | 40 |
| 24 | 40 |
| 25 | 40 |
| 26 | 40 |
| 27 | 40 |
| 28 | 40 |
| 29 | 40 |
| 30 | 40 |
Humidity in June
Most of June feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the oppressive band about 57% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Oppressive (%) | 69 | 68 | 67 | 67 | 66 | 66 | 65 | 64 | 63 | 62 | 62 | 62 | 61 | 60 | 60 | 59 | 57 | 56 | 55 | 54 | 52 | 52 | 51 | 49 | 48 | 47 | 45 | 44 | 44 | 43 |
| Miserable (%) | 23 | 25 | 27 | 28 | 30 | 31 | 33 | 34 | 35 | 36 | 37 | 37 | 38 | 39 | 39 | 40 | 42 | 43 | 44 | 45 | 47 | 48 | 49 | 51 | 52 | 53 | 55 | 56 | 56 | 57 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 8 | 69 | 23 |
| 2 | 7 | 68 | 25 |
| 3 | 6 | 67 | 27 |
| 4 | 5 | 67 | 28 |
| 5 | 4 | 66 | 30 |
| 6 | 3 | 66 | 31 |
| 7 | 2 | 65 | 33 |
| 8 | 2 | 64 | 34 |
| 9 | 2 | 63 | 35 |
| 10 | 2 | 62 | 36 |
| 11 | 1 | 62 | 37 |
| 12 | 1 | 62 | 37 |
| 13 | 1 | 61 | 38 |
| 14 | 1 | 60 | 39 |
| 15 | 1 | 60 | 39 |
| 16 | 1 | 59 | 40 |
| 17 | 1 | 57 | 42 |
| 18 | 1 | 56 | 43 |
| 19 | 1 | 55 | 44 |
| 20 | 1 | 54 | 45 |
| 21 | 1 | 52 | 47 |
| 22 | 0 | 52 | 48 |
| 23 | 0 | 51 | 49 |
| 24 | 0 | 49 | 51 |
| 25 | 0 | 48 | 52 |
| 26 | 0 | 47 | 53 |
| 27 | 0 | 45 | 55 |
| 28 | 0 | 44 | 56 |
| 29 | 0 | 44 | 56 |
| 30 | 0 | 43 | 57 |
Wind in June
Winds average 11 mph in June.
Across June, daily wind ranges from about 10 mph on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| 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 | 11 | light breeze |
| 2 | 11 | light breeze |
| 3 | 11 | light breeze |
| 4 | 11 | light breeze |
| 5 | 11 | light breeze |
| 6 | 11 | light breeze |
| 7 | 11 | light breeze |
| 8 | 11 | light breeze |
| 9 | 11 | light breeze |
| 10 | 11 | light breeze |
| 11 | 11 | light breeze |
| 12 | 11 | light breeze |
| 13 | 11 | light breeze |
| 14 | 10 | light breeze |
| 15 | 10 | light breeze |
| 16 | 10 | light breeze |
| 17 | 10 | light breeze |
| 18 | 10 | light breeze |
| 19 | 10 | light breeze |
| 20 | 10 | light breeze |
| 21 | 10 | light breeze |
| 22 | 10 | light breeze |
| 23 | 10 | light breeze |
| 24 | 10 | light breeze |
| 25 | 10 | light breeze |
| 26 | 10 | light breeze |
| 27 | 10 | light breeze |
| 28 | 10 | light breeze |
| 29 | 10 | light breeze |
| 30 | 10 | light breeze |
Sunrise & sunset in June
Daylight runs from about 13 h 24 min at the start of June to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over June. Sunrise moves from 5:42 AM to 5:45 AM, and sunset from 7:07 PM to 7:16 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) | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 |
| Sunrise (AM) | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:43 | 5:43 | 5:43 | 5:43 | 5:43 | 5:44 | 5:44 | 5:44 | 5:44 | 5:45 | 5:45 |
| Sunset (PM) | 7:07 | 7:07 | 7:08 | 7:08 | 7:09 | 7:09 | 7:09 | 7:10 | 7:10 | 7:11 | 7:11 | 7:11 | 7:12 | 7:12 | 7:12 | 7:13 | 7:13 | 7:13 | 7:14 | 7:14 | 7:14 | 7:14 | 7:15 | 7:15 | 7:15 | 7:15 | 7:15 | 7:15 | 7:15 | 7:16 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 5:42 | 7:07 |
| 2 | 13.4 | 5:42 | 7:07 |
| 3 | 13.4 | 5:42 | 7:08 |
| 4 | 13.4 | 5:42 | 7:08 |
| 5 | 13.4 | 5:42 | 7:09 |
| 6 | 13.5 | 5:42 | 7:09 |
| 7 | 13.5 | 5:42 | 7:09 |
| 8 | 13.5 | 5:42 | 7:10 |
| 9 | 13.5 | 5:42 | 7:10 |
| 10 | 13.5 | 5:42 | 7:11 |
| 11 | 13.5 | 5:42 | 7:11 |
| 12 | 13.5 | 5:42 | 7:11 |
| 13 | 13.5 | 5:42 | 7:12 |
| 14 | 13.5 | 5:42 | 7:12 |
| 15 | 13.5 | 5:42 | 7:12 |
| 16 | 13.5 | 5:42 | 7:13 |
| 17 | 13.5 | 5:42 | 7:13 |
| 18 | 13.5 | 5:42 | 7:13 |
| 19 | 13.5 | 5:42 | 7:14 |
| 20 | 13.5 | 5:43 | 7:14 |
| 21 | 13.5 | 5:43 | 7:14 |
| 22 | 13.5 | 5:43 | 7:14 |
| 23 | 13.5 | 5:43 | 7:15 |
| 24 | 13.5 | 5:43 | 7:15 |
| 25 | 13.5 | 5:44 | 7:15 |
| 26 | 13.5 | 5:44 | 7:15 |
| 27 | 13.5 | 5:44 | 7:15 |
| 28 | 13.5 | 5:44 | 7:15 |
| 29 | 13.5 | 5:45 | 7:15 |
| 30 | 13.5 | 5:45 | 7:16 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 6.51 kWh/m².
For context, solar energy here swings from a low near 3.66 kWh/m² to a high of 6.9 kWh/m² in May across the year — June's 6.51 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) | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.5 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.4 | Intense |
| 4 | 6.4 | Intense |
| 5 | 6.4 | Intense |
| 6 | 6.4 | Intense |
| 7 | 6.4 | Intense |
| 8 | 6.4 | 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 | 6.6 | Intense |
| 17 | 6.6 | Intense |
| 18 | 6.6 | Intense |
| 19 | 6.6 | Intense |
| 20 | 6.6 | Intense |
| 21 | 6.6 | Intense |
| 22 | 6.6 | Intense |
| 23 | 6.6 | Intense |
| 24 | 6.7 | Intense |
| 25 | 6.7 | Intense |
| 26 | 6.7 | Intense |
| 27 | 6.7 | Intense |
| 28 | 6.7 | Intense |
| 29 | 6.7 | Intense |
| 30 | 6.7 | Intense |
Hazard calendar for Key West
In June, Key West sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Key West sits in the Atlantic hurricane belt; the season peaks August–October.
Key West's rainy season runs May–October, when most of the year's rain falls.
Is June a good time to visit Key West?
Our two travel scores rate June for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
June is a reasonable time to visit Key West for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Key West in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Key West sees daytime highs around 83°F and nights near 80°F. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.
Sea temperature near Key West in June
The nearest coast averages about 83°F in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 86°F and coldest in February near 73°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) | 73 | 73 | 74 | 77 | 80 | 83 | 85 | 86 | 85 | 83 | 78 | 75 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 73 | Refreshing |
| Feb | 73 | Refreshing |
| Mar | 74 | Refreshing |
| Apr | 77 | Warm |
| May | 80 | Warm |
| Jun | 83 | Tropical |
| Jul | 85 | Tropical |
| Aug | 86 | Tropical |
| Sep | 85 | Tropical |
| Oct | 83 | Tropical |
| Nov | 78 | Warm |
| Dec | 75 | Warm |
UV index in Key West in June
Clear-sky midday UV in June peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Key West peaks around July 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (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) | 6 | 8 | 10 | 11 | 11 | 11 | 12 | 12 | 11 | 9 | 6 | 5 |
| Level | High | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 11 | Extreme |
| May | 11 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 9 | Very high |
| Nov | 6 | High |
| Dec | 5 | High |
Air quality in Key West in June
Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.
Air quality in Key West is worst in July — around 18 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (December, 4 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 | 5 | 6 | 8 | 9 | 15 | 18 | 16 | 10 | 7 | 5 | 4 |
| Level | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 5 | Good |
| Feb | 5 | Good |
| Mar | 6 | Good |
| Apr | 8 | Good |
| May | 9 | Good |
| Jun | 15 | Moderate |
| Jul | 18 | Moderate |
| Aug | 16 | Moderate |
| Sep | 10 | Good |
| Oct | 7 | Good |
| Nov | 5 | Good |
| Dec | 4 | Good |
Where is Key West?
Key West sits at 24.6°N, 81.8°W, 3 ft above sea level, in United States. The nearest listed city is Marco Island, 96 mi away.
Topography around Key West
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Key West.
Within 2 miles, the terrain around Key West has only modest variations in elevation — a maximum elevation change of 39 ft around an average of 3 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 75 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 52 ft.
The land around Key West is covered by water (64%) and artificial surfaces (26%) within 2 miles, water (95%) within 10 miles, and water (98%) 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 Key West (24.5552°, -81.7816°, elevation 3 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).