Les Cayes weather in May
In May, Les Cayes sees average daytime highs of 27°C and overnight lows near 24°C, with 100 mm of rain across 15.6 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 2nd-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 35% of the time in May, and the air most often feels oppressive.
Daylight stretches from about 12 h 42 min at the start of May to 13 hours by month's end. Set against the rest of the year, May is Les Cayes's 10th-clearest and 3rd-windiest month. For the whole year in context, see Les Cayes's year-round climate.
- Daytime high
- 27°
- 6th warmest
- Overnight low
- 24°
- 7th coldest
- Rainfall
- 100 mm
- 15.6 wet days
- Daylight
- 12 h 54 min
- 5:26 AM – 6:17 PM
- Cloud cover
- 57%
- 10th clearest
- Wind
- 11 km/h
- 3rd windiest
- Solar energy
- 6.41 kWh/m²
- Travel score
- 5.7
- out of 10
Temperature in May
Day-to-day highs hold fairly steady near 27°C through the month.
A typical May day in Les Cayes reaches about 27°C in the afternoon and slips back to 24°C overnight — a 4°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 about 1°C cooler than 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) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 23 |
| 2 | 27 | 23 |
| 3 | 27 | 23 |
| 4 | 27 | 23 |
| 5 | 27 | 23 |
| 6 | 27 | 23 |
| 7 | 27 | 23 |
| 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 | 28 | 24 |
| 20 | 28 | 24 |
| 21 | 28 | 24 |
| 22 | 28 | 24 |
| 23 | 28 | 24 |
| 24 | 28 | 24 |
| 25 | 28 | 24 |
| 26 | 28 | 24 |
| 27 | 28 | 24 |
| 28 | 28 | 24 |
| 29 | 28 | 24 |
| 30 | 28 | 24 |
| 31 | 28 | 24 |
How May really feels in Les Cayes
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.
Les Cayes weather by month
How May compares with the rest of the year at a glance. May is the 6th-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 | 26° / 22° | 23 | 5.1 | 11 | 8.0 |
| Feb | 26° / 22° | 22 | 5.7 | 11.4 | 7.8 |
| Mar | 26° / 22° | 41 | 10 | 11.9 | 7.1 |
| Apr | 27° / 23° | 60 | 13.1 | 12.4 | 6.4 |
| May | 27° / 24° | 100 | 15.6 | 12.8 | 5.7 |
| Jun | 28° / 25° | 62 | 10 | 13.1 | 5.9 |
| Jul | 29° / 25° | 54 | 10 | 13 | 5.7 |
| Aug | 29° / 25° | 78 | 12.5 | 12.6 | 5.3 |
| Sep | 29° / 25° | 100 | 16.4 | 12.1 | 4.8 |
| Oct | 28° / 24° | 145 | 18.3 | 11.6 | 5.2 |
| Nov | 27° / 24° | 84 | 12.2 | 11.1 | 6.3 |
| Dec | 27° / 23° | 27 | 6 | 10.9 | 7.6 |
Cloud cover in May
The sky is clear or mostly clear about 35% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 45%. 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 (%) | 75 | 75 | 73 | 72 | 72 | 70 | 69 | 66 | 65 | 63 | 61 | 59 | 57 | 54 | 53 | 51 | 49 | 47 | 46 | 44 | 45 | 43 | 43 | 43 | 44 | 43 | 43 | 44 | 44 | 44 | 45 |
| Cloudier (%) | 25 | 25 | 27 | 28 | 28 | 30 | 31 | 34 | 35 | 37 | 39 | 41 | 43 | 46 | 47 | 49 | 51 | 53 | 54 | 56 | 55 | 57 | 57 | 57 | 56 | 57 | 57 | 56 | 56 | 56 | 55 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 75 | 25 |
| 2 | 75 | 25 |
| 3 | 73 | 27 |
| 4 | 72 | 28 |
| 5 | 72 | 28 |
| 6 | 70 | 30 |
| 7 | 69 | 31 |
| 8 | 66 | 34 |
| 9 | 65 | 35 |
| 10 | 63 | 37 |
| 11 | 61 | 39 |
| 12 | 59 | 41 |
| 13 | 57 | 43 |
| 14 | 54 | 46 |
| 15 | 53 | 47 |
| 16 | 51 | 49 |
| 17 | 49 | 51 |
| 18 | 47 | 53 |
| 19 | 46 | 54 |
| 20 | 44 | 56 |
| 21 | 45 | 55 |
| 22 | 43 | 57 |
| 23 | 43 | 57 |
| 24 | 43 | 57 |
| 25 | 44 | 56 |
| 26 | 43 | 57 |
| 27 | 43 | 57 |
| 28 | 44 | 56 |
| 29 | 44 | 56 |
| 30 | 44 | 56 |
| 31 | 45 | 55 |
Chance of precipitation in May
Les Cayes gets around 100 mm of rain over 15.6 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 49% and peaks near 52% 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 (%) | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 50 | 50 | 49 | 49 | 49 | 48 | 47 | 46 | 46 | 45 |
| Rain chance (%) | |
|---|---|
| 1 | 52 |
| 2 | 52 |
| 3 | 51 |
| 4 | 51 |
| 5 | 51 |
| 6 | 51 |
| 7 | 51 |
| 8 | 50 |
| 9 | 50 |
| 10 | 50 |
| 11 | 50 |
| 12 | 50 |
| 13 | 49 |
| 14 | 49 |
| 15 | 49 |
| 16 | 49 |
| 17 | 49 |
| 18 | 49 |
| 19 | 49 |
| 20 | 49 |
| 21 | 49 |
| 22 | 50 |
| 23 | 50 |
| 24 | 49 |
| 25 | 49 |
| 26 | 49 |
| 27 | 48 |
| 28 | 47 |
| 29 | 46 |
| 30 | 46 |
| 31 | 45 |
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 85% 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 20 | 19 | 18 | 17 | 15 | 14 | 13 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 |
| Oppressive (%) | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 78 | 80 | 81 | 82 | 83 | 85 | 86 | 87 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 95 | 96 | 95 | 96 | 96 | 96 | 96 |
| Miserable (%) | 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 | 1 | 1 | 1 | 1 | 1 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 31 | 68 | 0 |
| 2 | 1 | 30 | 69 | 0 |
| 3 | 1 | 29 | 70 | 0 |
| 4 | 1 | 28 | 71 | 0 |
| 5 | 1 | 27 | 72 | 0 |
| 6 | 1 | 26 | 73 | 0 |
| 7 | 1 | 25 | 74 | 0 |
| 8 | 1 | 24 | 75 | 0 |
| 9 | 1 | 23 | 76 | 0 |
| 10 | 0 | 22 | 78 | 0 |
| 11 | 0 | 20 | 80 | 0 |
| 12 | 0 | 19 | 81 | 0 |
| 13 | 0 | 18 | 82 | 0 |
| 14 | 0 | 17 | 83 | 0 |
| 15 | 0 | 15 | 85 | 0 |
| 16 | 0 | 14 | 86 | 0 |
| 17 | 0 | 13 | 87 | 0 |
| 18 | 0 | 11 | 89 | 0 |
| 19 | 0 | 10 | 90 | 0 |
| 20 | 0 | 9 | 91 | 0 |
| 21 | 0 | 8 | 92 | 0 |
| 22 | 0 | 7 | 93 | 0 |
| 23 | 0 | 6 | 94 | 0 |
| 24 | 0 | 5 | 95 | 0 |
| 25 | 0 | 5 | 95 | 0 |
| 26 | 0 | 4 | 96 | 0 |
| 27 | 0 | 4 | 95 | 1 |
| 28 | 0 | 3 | 96 | 1 |
| 29 | 0 | 3 | 96 | 1 |
| 30 | 0 | 3 | 96 | 1 |
| 31 | 0 | 3 | 96 | 1 |
Wind in May
Winds average 11 km/h in May.
Across May, daily wind ranges from about 10 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) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 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 | 10 | calm |
| 2 | 10 | calm |
| 3 | 10 | calm |
| 4 | 10 | calm |
| 5 | 10 | calm |
| 6 | 10 | calm |
| 7 | 10 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | 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 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
| 31 | 12 | calm |
Sunrise & sunset in May
Daylight runs from about 12 h 42 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 18 minutes over May. Sunrise moves from 5:33 AM to 5:22 AM, and sunset from 6:12 PM to 6:22 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) | 12.7 | 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 | 13.0 |
| Sunrise (AM) | 5:33 | 5:32 | 5:32 | 5:31 | 5:30 | 5:30 | 5:29 | 5:29 | 5:29 | 5:28 | 5:28 | 5:27 | 5:27 | 5:26 | 5:26 | 5:26 | 5:25 | 5:25 | 5:25 | 5:24 | 5:24 | 5:24 | 5:24 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 | 5:23 | 5:22 | 5:22 |
| Sunset (PM) | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:21 | 6:21 | 6:22 | 6:22 | 6:22 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.7 | 5:33 | 6:12 |
| 2 | 12.7 | 5:32 | 6:12 |
| 3 | 12.7 | 5:32 | 6:12 |
| 4 | 12.7 | 5:31 | 6:13 |
| 5 | 12.7 | 5:30 | 6:13 |
| 6 | 12.7 | 5:30 | 6:13 |
| 7 | 12.7 | 5:29 | 6:14 |
| 8 | 12.8 | 5:29 | 6:14 |
| 9 | 12.8 | 5:29 | 6:14 |
| 10 | 12.8 | 5:28 | 6:15 |
| 11 | 12.8 | 5:28 | 6:15 |
| 12 | 12.8 | 5:27 | 6:15 |
| 13 | 12.8 | 5:27 | 6:16 |
| 14 | 12.8 | 5:26 | 6:16 |
| 15 | 12.8 | 5:26 | 6:16 |
| 16 | 12.9 | 5:26 | 6:17 |
| 17 | 12.9 | 5:25 | 6:17 |
| 18 | 12.9 | 5:25 | 6:18 |
| 19 | 12.9 | 5:25 | 6:18 |
| 20 | 12.9 | 5:24 | 6:18 |
| 21 | 12.9 | 5:24 | 6:19 |
| 22 | 12.9 | 5:24 | 6:19 |
| 23 | 12.9 | 5:24 | 6:19 |
| 24 | 12.9 | 5:23 | 6:20 |
| 25 | 12.9 | 5:23 | 6:20 |
| 26 | 13.0 | 5:23 | 6:21 |
| 27 | 13.0 | 5:23 | 6:21 |
| 28 | 13.0 | 5:23 | 6:21 |
| 29 | 13.0 | 5:23 | 6:22 |
| 30 | 13.0 | 5:22 | 6:22 |
| 31 | 13.0 | 5:22 | 6:22 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.41 kWh/m².
For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.83 kWh/m² in July across the year — May's 6.41 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) | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 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 | 6.4 | Intense |
| 15 | 6.4 | Intense |
| 16 | 6.4 | Intense |
| 17 | 6.4 | Intense |
| 18 | 6.4 | Intense |
| 19 | 6.3 | Intense |
| 20 | 6.3 | Intense |
| 21 | 6.3 | Intense |
| 22 | 6.3 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.4 | Intense |
| 29 | 6.4 | Intense |
| 30 | 6.4 | Intense |
| 31 | 6.4 | Intense |
Hazard calendar for Les Cayes
In May, Les Cayes sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Les Cayes sits in the Atlantic hurricane belt; the season peaks August–October.
Les Cayes's rainy season runs August–November, when most of the year's rain falls.
Les Cayes sees seasonal dust haze (July), heaviest in July.
Is May a good time to visit Les Cayes?
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 Les Cayes for sightseeing.
What to pack for Les Cayes in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Les Cayes sees daytime highs around 27°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 16 days see rain.
Sea temperature near Les Cayes 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 at the nearest coast (about 15 km away) is warmest in September at about 29°C and coldest in February near 27°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 | 27 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Tropical |
UV index in Les Cayes 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 Les Cayes peaks around June 12 at about 12 (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 | 12 | 12 | 12 | 11 | 12 | 12 | 11 | 8 | 7 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Les Cayes 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 Les Cayes is worst in July — around 29 µg/m³ PM2.5 (moderate), about 4.0× the cleanest month (December, 7 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) | 7 | 9 | 9 | 11 | 18 | 29 | 29 | 23 | 16 | 15 | 9 | 7 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 11 | Good |
| May | 18 | Moderate |
| Jun | 29 | Moderate |
| Jul | 29 | Moderate |
| Aug | 23 | Moderate |
| Sep | 16 | Moderate |
| Oct | 15 | Moderate |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Les Cayes?
Les Cayes sits at 18.2°N, 73.7°W, 1 m above sea level, in Haiti. The nearest listed city is Jérémie, 64 km away.
Topography around Les Cayes
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Les Cayes.
Within 3 km, the terrain around Les Cayes has only modest variations in elevation — a maximum elevation change of 38 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 354 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,322 m.
The land around Les Cayes is covered by water (45%) within 3 km, water (43%) and grassland (28%) within 16 km, and water (64%) and trees (23%) within 80 km.
Haiti travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type A / B
- 110 V · 60 Hz
- Prices
- ≈ 86% of US
- price level, 2025
- GDP per capita
- $2,694
- 2025
- Happiness
- 3.6 / 10
- World Happiness, 2020
- Homicide rate
- 41.2
- per 100k, 2023
- Road deaths
- 18.8
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 444
- 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 Les Cayes (18.192°, -73.7495°, elevation 1 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).