Les Cayes climate
Les Cayes (Haiti) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 28 °C82 °F, and about 797 mm31 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Les Cayes climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 2678 | 2780 | 321.3 |
| Feb | 2781 | 2578 | 2680 | 230.9 |
| Mar | 2882 | 2678 | 2780 | 281.1 |
| Apr | 2883 | 2679 | 2781 | 341.4 |
| May | 2983 | 2781 | 2882 | 823.2 |
| Jun | 2984 | 2882 | 2883 | 753.0 |
| Jul | 2985 | 2882 | 2983 | 692.7 |
| Aug | 3085 | 2883 | 2984 | 883.5 |
| Sep | 3085 | 2883 | 2984 | 963.8 |
| Oct | 2985 | 2882 | 2983 | 1375.4 |
| Nov | 2984 | 2781 | 2882 | 883.5 |
| Dec | 2883 | 2680 | 2781 | 431.7 |
| Year | 3085 | 2578 | 2882 | 79731 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 74% | 38% | 4.6 | 11:09 |
| Feb | 74% | 39% | 5.3 | 11:32 |
| Mar | 73% | 46% | 5.8 | 11:00 |
| Apr | 75% | 53% | 6.1 | 12:32 |
| May | 78% | 64% | 5.9 | 12:59 |
| Jun | 80% | 63% | 6.3 | 13:13 |
| Jul | 79% | 58% | 6.4 | 13:07 |
| Aug | 79% | 60% | 6.2 | 12:44 |
| Sep | 78% | 60% | 5.8 | 12:13 |
| Oct | 78% | 61% | 5.0 | 11:42 |
| Nov | 75% | 49% | 4.5 | 11:15 |
| Dec | 74% | 37% | 4.5 | 11:03 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Les Cayes is like
The warmest month is September, with an average high of 30 °C85 °F and a low of 28 °C83 °F. The coldest is February, when highs average 27 °C81 °F and lows 25 °C78 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.4 °C4.3 °F.
Annual precipitation is moderate at about 797 mm31 in. The wettest three-month stretch is August–October, which brings 40% of the annual total. The wettest month is October (137 mm5.4 in), the driest is February (23 mm0.9 in).
Relative humidity ranges from 73% in March to 80% in June. The clearest skies (lowest average cloud amount, 37%) are typical of December. Average wind speed near the ground ranges from 14 km/h (9 mph) in September to 20 km/h (13 mph) in June. Daylight lasts from about 11.0 hours in December to 13.2 hours in June.
Best time to visit Les Cayes
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–April. Average highs then reach 27 °C81 °F to 28 °C83 °F. Precipitation is 23 mm0.9 in to 43 mm1.7 in per month.
The most challenging month is October, which is humid (78% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Les Cayes
- Wetter months (May–November) — highs 2983 to 30 °C85 °F, lows 2781 to 28 °C83 °F, about 91 mm3.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (December–April) — highs 2781 to 28 °C83 °F, lows 2578 to 26 °C80 °F, about 32 mm1.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Les Cayes compares
The nearest larger place is Jacmel, about 128 km to the east. Compared with it, Les Cayes is on average 0.3 °C0.6 °F cooler. It receives 36% more precipitation (797 mm31 in vs 584 mm23 in). The difference is largest in July (0.5 °C1 °F cooler).
World Climates covers 9 places in Haiti. By annual mean temperature, Les Cayes is the 5th warmest of them. By annual precipitation, it is the wettest. See all of them on the Haiti climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Basseterre (Saint Kitts and Nevis, Aw), Kingston (Jamaica, Aw) and Bridgetown (Barbados, Aw).
Nearby places
- Climate in Tigwav 97 km · 29 °C83 °F · 538 mm21 in
- Climate in Jacmel 128 km · 28 °C83 °F · 584 mm23 in
- Climate in Arcahaie 145 km · 29 °C84 °F · 499 mm20 in
- Climate in Saint-Marc 151 km · 27 °C81 °F · 499 mm20 in
- Climate in Port-au-Prince 154 km · 29 °C84 °F · 509 mm20 in
- Climate in Dessalines 176 km · 28 °C82 °F · 542 mm21 in
- Climate in Port-de-Paix 217 km · 27 °C81 °F · 700 mm28 in
- Climate in Cap-Haïtien 239 km · 27 °C81 °F · 653 mm26 in
Frequently asked questions
What is the warmest month in Les Cayes?
September is the warmest month in Les Cayes. Its average high is 30 °C (85 °F) and its average low is 28 °C (83 °F).
What is the coldest month in Les Cayes?
February is the coldest month. Its average high is 27 °C (81 °F) and its average low is 25 °C (78 °F).
When does it rain the most in Les Cayes?
October is the wettest month with about 137 mm (5.4 in) of precipitation. February is the driest with about 23 mm (0.9 in).
What is the best time to visit Les Cayes?
Judging by long-term averages, the most comfortable months are December–April.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.