Montego Bay (Jamaica) weather in September
September in Montego Bay: sweltering, soaked, with clean air — fine if you can take 26 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#10 of 12 months in Montego Bay · #827 of 1413 destinations to visit in September · comfort 76/100 (tier B)
- Days
- 34°C
- Nights
- 25°C
- Wet days
- 26
- Sun
- 10.7 h
- Humidity
- 83%
- Daylight
- 12 h

Traveller notes on Montego Bay in September
Montego Bay-forum threads on September weather are direct about the odds: better than half the days in the month bring some rain, and muggy conditions are described as close to constant regardless of whether it's actively raining. The one consistent silver lining - rain here normally arrives as a short, heavy shower rather than a persistent drizzle, sun typically back out not long after. Posters who've stayed a week or more report getting only two or three genuinely rainy days out of the whole trip. Early September marks the peak of hurricane season, and while regulars call a direct hit statistically unlikely, several note it's still worth checking the tropical outlook and having travel insurance in place. The record: a scorching 33.9C by day feeling like a punishing 40C, 25C nights, a notably high 185mm across 26.2 days, 83 percent humidity, a 30.9C sea and 10.7 hours of sun.
Other months in Montego Bay
Regulars are specific this counts among the driest windows of the year here relative to what follows, December through April historically the lower-rain stretch, though real showers remain common even in the better months, one visitor reporting rain lasting only about 30 minutes during their entire stay. Our row backs that hot, genuinely wet read, 32.3C reading as a scorching 37C, over 23.7C nights feeling 28C, with a substantial 121.3mm of rain across 19.1 days and humidity at 80 percent. Regulars are consistent low humidity and warm sunny days are the more common experience overall, brief showers rarely disrupting a full day of beach time. This remains one of the recommended windows to visit, spanning November through April by local consensus. The sea sits at a bath-warm 28.1C. The record: 11.6 hours of sun, a 15.5 kph wind and AQI 41.
Montego Bay-forum threads on March weather call it, along with February, the island's best month - high season, and resorts price accordingly. Showers are consistently described as short-lived when they happen: heavy but quick, feeling refreshing rather than ruining, usually followed by sunshine, with overcast stretches called genuinely rare. Experiences still vary a lot, though - one poster reports ten straight days of perfect sun with zero precipitation in late March, another describes close to the opposite, both from the same time of year. The record leans toward the wetter half of that range: 31.7C days feeling like a sticky 35C, 22.7C nights, 70mm across 16.1 days, a 27.3C sea, 79 percent humidity and 11.1 hours of sun - genuinely warm and genuinely showery, in short bursts rather than washed-out days.
December opens Jamaica's high season and regulars say the season exists for a reason: this is some of the best weather of the year, with the driest stretch running December to March. Our row's 13 precipitation days look alarming until you read the 43.6mm they carry and the forum's description of how it falls - hard and fast along the coast, then breaking for the day into bright sun. Reports range from a single hour-long afternoon shower to nothing at all across a week, with two days of rain from a tropical storm as the worst anyone offers; storms and hurricanes in December they call extremely unlikely. Middays are still properly hot. The record: 31.3C days that feel like 35C, 23.4C nights, 9.8 hours of sun and a 28.7C sea.
February in Montego Bay is the middle of the dry season and the forum's account is consistent: hot, sunny for most of the day, and rain that arrives as a quick shower and then clears rather than as a wet day. Our own row carries that pattern - 13.2 precipitation days with only 42.8mm between them. Two things regulars get asked and answer the same way. The sea is a touch cooler through December to February, bracing for a minute and fine after that, and usually warmer than the resort pools in winter. And the evening sweater is mostly unnecessary outdoors; what it is actually for is the air conditioning indoors and restaurant dress codes. The record: 31C days that feel like 33C, 22.3C nights, 10.7 hours of sun, a 27.2C sea and a 19 kph breeze.
Add your own note from Montego Bay's card on the map.
Montego Bay climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Montego Bay in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Montego Bay's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherMontego Bay's weather peaks December–February, best around January.
September coincides with Hurricane season.
Best weatherFair weatherToughest weather
What's on in Montego Bay in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Sargassum on the north coast
1 May – 30 Sep · usuallySargassum seasonThe north coast gets far less than the eastern islands, but the bays east of town collect a fringe of weed in summer and the hotels rake it off before breakfast.
- Hazard
Hurricane season
1 Jun – 30 NovMelissa came ashore in Westmoreland at the end of October 2025 as the strongest storm on record to hit Jamaica, and the west of the island is still rebuilding. September and October are the weeks that count. Source ↗
Where is Montego Bay?
Montego Bay in September — FAQ
- Is September a good time to visit Montego Bay?
- September in Montego Bay: sweltering, soaked, with clean air — fine if you can take 26 rainy days. It ranks #10 of 12 months for Montego Bay on SeasonMap's comfort score (76/100).
- What is the weather like in Montego Bay in September?
- In September, Montego Bay averages a daily high of 33.9°C and a low of 25°C, with about 184.6 mm of rain over roughly 26.2 rainy days.
- What is the air quality in Montego Bay in September?
- Montego Bay has a mean US Air Quality Index of about 38 in September.