Climate averages 1991–2020
Les Cayes weather
in August.
A hot, moderately wet month: the 2nd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Les Cayes: daytime highs average 32.2°C and nights cool to about 25.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 78 mm of rain on roughly 13 days, which makes August a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average August day.
The nearest other city in this atlas is Jérémie (64 km away). In August its highs average 30.5°C, 1.7°C cooler than Les Cayes, with 46 mm of rain.
Among the 18 cities listed in Haiti, Les Cayes ranks joint 5th of 18 for the warmest August highs and 5th of 18 for the driest August (rainfall, lowest first). The mean August high of those 18 cities is 31.8°C; Les Cayes is 0.4°C warmer than that mean.
From August to September, average highs fall by 0.8°C to 31.4°C, and monthly rainfall rises from 78 mm to 100 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Les Cayes climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C22.4°C | 22.4°C | 23 | 5.1 | 11.211 h |
| February | 29.1°C22.4°C | 22.4°C | 22 | 5.8 | 11.512 h |
| March | 29.5°C22.7°C | 22.7°C | 41 | 10.0 | 12.012 h |
| April | 30.0°C23.5°C | 23.5°C | 60 | 13.1 | 12.513 h |
| May | 30.3°C24.4°C | 24.4°C | 100 | 15.6 | 13.013 h |
| June | 31.4°C25.3°C | 25.3°C | 62 | 9.9 | 13.213 h |
| July | 32.3°C25.6°C | 25.6°C | 54 | 10.0 | 13.113 h |
| August, selected | 32.2°C25.8°C | 25.8°C | 78 | 12.5 | 12.713 h |
| September | 31.4°C25.4°C | 25.4°C | 100 | 16.3 | 12.312 h |
| October | 30.2°C24.8°C | 24.8°C | 145 | 18.3 | 11.712 h |
| November | 29.4°C24.0°C | 24.0°C | 84 | 12.2 | 11.311 h |
| December | 29.0°C23.0°C | 23.0°C | 27 | 6.0 | 11.111 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Jérémie in AugustHaiti · 64 kmHigh 30.5°C · Low 26.2°C · 46 mm rain
- Miragoâne in AugustHaiti · 75 kmHigh 32.1°C · Low 26.5°C · 116 mm rain
- Tigwav in AugustHaiti · 97 kmHigh 32.1°C · Low 26.6°C · 111 mm rain
- Léogâne in AugustHaiti · 123 kmHigh 31.4°C · Low 25.2°C · 111 mm rain
- Jacmel in AugustHaiti · 128 kmHigh 30.0°C · Low 25.3°C · 124 mm rain
- Arcahaie in AugustHaiti · 145 kmHigh 31.9°C · Low 25.1°C · 36 mm rain
- Carrefour in AugustHaiti · 147 kmHigh 31.6°C · Low 25.1°C · 159 mm rain
- Saint-Marc in AugustHaiti · 151 kmHigh 31.9°C · Low 25.8°C · 84 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Les Cayes) is explained once on the Les Cayes year overview and on the Sources, method and limits page.