Climate averages 1991–2020
La Romana weather
in September.
A hot, wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in La Romana: daytime highs average 31.2°C and nights cool to about 24.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 96 mm of rain on roughly 16 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.
The nearest other city in this atlas is Salvaleón de Higüey (35 km away). In September its highs average 30.2°C, 1.0°C cooler than La Romana, with 107 mm of rain.
Among the 14 cities listed in the Dominican Republic, La Romana ranks 4th of 14 for the warmest September highs and 5th of 14 for the driest September (rainfall, lowest first). The mean September high of those 14 cities is 30.4°C; La Romana is 0.8°C warmer than that mean.
From September to October, average highs fall by 1.0°C to 30.3°C, and monthly rainfall falls from 96 mm to 88 mm.
The annual picture
September 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
La Romana climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.6°C22.0°C | 22.0°C | 17 | 4.4 | 11.211 h |
| February | 29.1°C21.9°C | 21.9°C | 15 | 4.8 | 11.512 h |
| March | 29.6°C22.0°C | 22.0°C | 24 | 6.4 | 12.012 h |
| April | 30.2°C22.8°C | 22.8°C | 41 | 9.2 | 12.513 h |
| May | 30.5°C23.8°C | 23.8°C | 84 | 14.5 | 13.013 h |
| June | 31.4°C24.7°C | 24.7°C | 55 | 11.5 | 13.213 h |
| July | 31.9°C25.0°C | 25.0°C | 53 | 10.2 | 13.113 h |
| August | 31.8°C25.1°C | 25.1°C | 75 | 13.5 | 12.813 h |
| September, selected | 31.2°C24.8°C | 24.8°C | 96 | 16.4 | 12.312 h |
| October | 30.3°C24.3°C | 24.3°C | 88 | 17.3 | 11.712 h |
| November | 29.2°C23.4°C | 23.4°C | 61 | 11.6 | 11.311 h |
| December | 28.8°C22.6°C | 22.6°C | 22 | 5.2 | 11.011 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
September in nearby cities
- Salvaleón de Higüey in SeptemberDominican Republic · 35 kmHigh 30.2°C · Low 24.2°C · 107 mm rain
- San Pedro de Macorís in SeptemberDominican Republic · 36 kmHigh 30.1°C · Low 25.4°C · 122 mm rain
- Punta Cana in SeptemberDominican Republic · 62 kmHigh 28.9°C · Low 26.0°C · 121 mm rain
- Santo Domingo Este in SeptemberDominican Republic · 93 kmHigh 29.4°C · Low 23.9°C · 148 mm rain
- Santo Domingo in SeptemberDominican Republic · 98 kmHigh 29.9°C · Low 23.4°C · 120 mm rain
- Santo Domingo Oeste in SeptemberDominican Republic · 109 kmHigh 29.9°C · Low 22.9°C · 120 mm rain
- San Cristóbal in SeptemberDominican Republic · 120 kmHigh 29.9°C · Low 23.3°C · 120 mm rain
- Bonao in SeptemberDominican Republic · 163 kmHigh 30.4°C · Low 22.2°C · 149 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 La Romana) is explained once on the La Romana year overview and on the Sources, method and limits page.