Jamaica (Montego Bay) Weather in September
Montego Bay, Jamaica
Pick your travel dates to see the odds.
September carries Jamaica's highest hurricane risk of the year, 6 storm days recorded since 1985, alongside the year's highest rain-day count, 24.8 days, and humidity peaking at 84%.
Highs ease slightly to 87.9°F, and this is genuinely the riskiest month for weather disruption on this coast, in line with the Atlantic hurricane season's climatological peak region-wide.
It's also, not coincidentally, one of the cheapest and least crowded months to visit, resort rates often drop noticeably, and popular excursions see a fraction of the winter crowds.
The sea reaches its warmest point of the year at 87.6°F, when conditions are calm, swimming and snorkeling are genuinely excellent.
If you're weather-sensitive but want the September discount, watch the National Hurricane Center's outlook in the two weeks before departure and buy travel insurance that explicitly covers named-storm disruption, not just generic trip cancellation.
Choosing a resort with a clearly stated storm policy (free rebooking or refund if a hurricane warning is issued) is a genuinely worthwhile precaution for a September Jamaica trip.
Boat-based and river excursions like Martha Brae rafting are the most likely activities to be rescheduled if a system is nearby, so having a land-based backup plan for any given day is a reasonable precaution.
Pack for heat, humidity and rain, and build slack into your itinerary, outdoor excursions are the first thing to get rescheduled if a system passes through.
Frequently asked questions
Is September a bad time to visit Jamaica?
It's the wettest month and has the year's most storm days, but it's also among the cheapest and least crowded, a real tradeoff.
How likely is a hurricane in Jamaica in September?
Historical data shows 6 storm days recorded since 1985, the highest of the year, though most individual weeks still pass without a direct hit.
Why is Jamaica cheaper in September?
It's the peak of hurricane season, so demand and prices drop even though the weather is still warm most days.
What's the sea temperature in Jamaica in September?
About 87.6°F, the warmest of the year.
Should I get travel insurance for a September Jamaica trip?
It's worth considering, look for coverage that explicitly includes named-storm disruption, not just generic trip cancellation.
Weather data by Open-Meteo.com (CC BY 4.0) and the NOAA National Hurricane Center. Data updated September 2026. How we calculate.