Climate averages 1991–2020
Montego Bay weather
by month.
See how the year changes. July has the highest average daily maximum; February has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Montego Bay averages a daytime high of 30.8°C and a nighttime low of 23.8°C, with about 1,442 mm of rain on roughly 225 days. July is the warmest month (average high 32.4°C) and January the coolest (28.9°C). May is the wettest month with 220 mm; February is the driest with 41 mm.
The annual picture
A year in Montego Bay
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 | 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
Nearby cities
- Spanish TownJamaica · 115 kmHigh 29.7°C · Low 23.7°C · 813 mm rain a year
- PortmoreJamaica · 122 kmHigh 29.7°C · Low 23.8°C · 813 mm rain a year
- KingstonJamaica · 130 kmHigh 30.1°C · Low 23.0°C · 813 mm rain a year
- Manzanillo, CubaCuba · 224 kmHigh 31.7°C · Low 22.8°C · 1,031 mm rain a year
- BayamoCuba · 250 kmHigh 31.4°C · Low 21.5°C · 1,145 mm rain a year
- ContramaestreCuba · 269 kmHigh 31.1°C · Low 21.8°C · 857 mm rain a year
- Palma SorianoCuba · 280 kmHigh 30.6°C · Low 21.7°C · 869 mm rain a year
- Santiago de CubaCuba · 280 kmHigh 30.4°C · Low 23.2°C · 735 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-5, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 18.40°, -77.90° (8 km from the city centre), adjusted up by 1.7°C for the difference between the city's elevation (12 m) and the cell's (271 m). Rain comes from the 0.25° cell at 18.50°, -78.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.