Climate averages 1991–2020
Montego Bay weather
in August.
A hot, wet month: the 2nd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Montego Bay: daytime highs average 32.3°C and nights cool to about 25.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 171 mm of rain on roughly 26 days, which makes August a wet month (the 9th 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 Spanish Town (115 km away). In August its highs average 31.3°C, 0.9°C cooler than Montego Bay, with 86 mm of rain.
Among the 4 cities listed in Jamaica, Montego Bay ranks 1st of 4 for the warmest August highs and 4th of 4 for the driest August (rainfall, lowest first). The mean August high of those 4 cities is 31.8°C; Montego Bay is 0.5°C warmer than that mean.
From August to September, average highs fall by 0.5°C to 31.7°C, and monthly rainfall rises from 171 mm to 205 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
Montego Bay climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C22.1°C | 22.1°C | 44 | 11.4 | 11.211 h |
| February | 29.5°C21.9°C | 21.9°C | 41 | 11.5 | 11.512 h |
| March | 30.3°C22.2°C | 22.2°C | 58 | 12.7 | 12.012 h |
| April | 31.2°C23.1°C | 23.1°C | 93 | 16.3 | 12.613 h |
| May | 31.4°C24.1°C | 24.1°C | 220 | 23.8 | 13.013 h |
| June | 32.2°C25.0°C | 25.0°C | 148 | 21.8 | 13.213 h |
| July | 32.4°C25.1°C | 25.1°C | 138 | 23.3 | 13.113 h |
| August, selected | 32.3°C25.3°C | 25.3°C | 171 | 26.1 | 12.813 h |
| September | 31.7°C25.1°C | 25.1°C | 205 | 25.9 | 12.312 h |
| October | 30.7°C24.7°C | 24.7°C | 182 | 24.7 | 11.712 h |
| November | 29.5°C23.8°C | 23.8°C | 91 | 16.4 | 11.311 h |
| December | 29.0°C22.9°C | 22.9°C | 50 | 11.4 | 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
August in nearby cities
- Spanish Town in AugustJamaica · 115 kmHigh 31.3°C · Low 25.2°C · 86 mm rain
- Portmore in AugustJamaica · 122 kmHigh 31.4°C · Low 25.4°C · 86 mm rain
- Kingston in AugustJamaica · 130 kmHigh 32.0°C · Low 24.6°C · 82 mm rain
- Manzanillo, Cuba in AugustCuba · 224 kmHigh 33.6°C · Low 24.8°C · 126 mm rain
- Bayamo in AugustCuba · 250 kmHigh 33.8°C · Low 23.7°C · 135 mm rain
- Contramaestre in AugustCuba · 269 kmHigh 33.5°C · Low 23.9°C · 86 mm rain
- Palma Soriano in AugustCuba · 280 kmHigh 32.7°C · Low 23.8°C · 105 mm rain
- Santiago de Cuba in AugustCuba · 280 kmHigh 32.3°C · Low 25.1°C · 82 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 Montego Bay) is explained once on the Montego Bay year overview and on the Sources, method and limits page.