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Portmore Weather by Month
Average temperatures, rainfall and humidity for Portmore, Jamaica, month by month, built from OpenWeather’s historical records. Use it to see what a typical Portmore month looks like before you travel — then check the live Portmore forecast for the days ahead.
Warmest month
July
33°C average high
Coolest month
February
22°C average low
Wettest month
October
67 mm of rain
Driest month
July
13 mm of rain
Average temperature and rainfall in Portmore by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 30°C | 23°C | 16°C / 34°C | 25 mm | 73% | 13 km/h |
| February | 30°C | 22°C | 17°C / 34°C | 19 mm | 72% | 14 km/h |
| March | 30°C | 23°C | 18°C / 36°C | 31 mm | 71% | 14 km/h |
| April | 31°C | 24°C | 16°C / 36°C | 32 mm | 73% | 15 km/h |
| May | 31°C | 25°C | 21°C / 36°C | 39 mm | 74% | 17 km/h |
| June | 32°C | 25°C | 21°C / 36°C | 19 mm | 73% | 18 km/h |
| July | 33°C | 26°C | 21°C / 37°C | 13 mm | 72% | 17 km/h |
| August | 33°C | 26°C | 21°C / 37°C | 32 mm | 75% | 15 km/h |
| September | 32°C | 25°C | 22°C / 36°C | 51 mm | 77% | 12 km/h |
| October | 31°C | 25°C | 21°C / 36°C | 67 mm | 80% | 11 km/h |
| November | 31°C | 24°C | 19°C / 36°C | 47 mm | 77% | 11 km/h |
| December | 30°C | 23°C | 19°C / 34°C | 36 mm | 75% | 13 km/h |
Best time to visit Portmore
The most comfortable time to visit Portmore is generally January to March, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around October, totalling about 411 mm a year.
Travellers who prefer heat should aim for July, when highs average 33°C. October is the month to avoid if rain would spoil your plans — it averages 67 mm, roughly 5× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Portmore forecast for what is happening now.