Jamaica in September: Weather, Crowds & What to Expect
Climate Map for September
Average temperature across Jamaica in September.
City Weather in September
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Kingston, Jamaica | 31° | 23° | 143 mm | extreme | Hot |
| Spanish Town | 32° | 23° | 135 mm | extreme | Hot |
| Portmore, Saint Catherine | 32° | 24° | 137 mm | extreme | Hot |
| Montego Bay | 32° | 24° | 152 mm | extreme | Hot |
| Mandeville, Jamaica | 28° | 19° | 245 mm | extreme | Mild |
| May Pen | 31° | 23° | 149 mm | extreme | Hot |
| Old Harbour, Jamaica | 31° | 23° | 140 mm | extreme | Hot |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
West Coast - Negril, Montego Bay and Lucea
Late-summer humidity stays high and September is often the wettest month; rivers and streams that feed into coastal areas run stronger, and low-lying roads can flood briefly after heavy rain. Beach time is still possible between showers, but this is the highest risk window for tropical storms affecting ferry and charter boat services. Flexible itineraries and a waterproof daypack are wise.
North Coast - Ocho Rios, St. Ann and Discovery Bay
September often produces the heaviest rains of the year and the greatest chance of tropical storms; rivers rise quickly and some roads inland from Ocho Rios may be affected. Many attractions stay open, but guided waterfall climbs and river rafting can be limited after storms. Visit only with waterproof plans and expect quieter towns as cruise calls decline during peak storm months.
East Coast & Portland Parish - Port Antonio, Blue Lagoon and Reach Falls
September often records the most widespread rain and the greatest chance of tropical storms passing nearby; waterfalls and rivers are dramatic but not always safe for swimming. Port Antonio becomes quieter as international visitors pull back; this can be a good time for off-season rates but with the trade-off of unpredictable weather. Keep an eye on official advisories and local news.
Kingston & Southeast Coast - Kingston, Port Royal and Hellshire
September often brings the most significant rain and the greatest chance of tropical disturbances; some neighborhoods experience brief urban flooding and traffic delays during heavy storms. Museums and indoor attractions remain open but plan for slower transfers and possible service interruptions. Travelers should have contingency days and stay informed about local conditions.
South Coast & Central South - Treasure Beach, Black River and St. Elizabeth
September often brings the most widespread rains and the largest storm risk; rivers like the Black River swell, and some low-lying coastal tracks can be disrupted. Visitor numbers drop, and services in smaller villages may be intermittent during heavy weather. Consider flexible bookings and carry dry bags for electronics when exploring estuaries and mangroves.
Blue Mountains & Interior Highlands
September often records sustained rainfall and the highest risk of washouts on remote mountain roads; summit trails can be closed or unsafe after heavy storms. The atmosphere is intensely green and waterfalls are at their fullest, but travel logistics become the priority-allow extra time for transfers. A flexible itinerary and local guidance are strongly recommended.
Events & Festivals in September
There are no major festivals or events in Jamaica during September to be aware of.