Morant Bay weather in September

In September, Morant Bay sees average daytime highs of 28°C and overnight lows near 25°C, with 161 mm of rain across 22.2 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 26% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Morant Bay's 10th-clearest and 11th-windiest month. For the whole year in context, see Morant Bay's year-round climate.

Daytime high
28°
1st warmest
Overnight low
25°
11th coldest
Rainfall
161 mm
22.2 wet days
Daylight
12 h 06 min
5:57 AM – 6:03 PM
Cloud cover
63%
10th clearest
Wind
12 km/h
11th windiest
Solar energy
5.97 kWh/m²
Travel score
4.2
out of 10

Morant Bay is city in Jamaica.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Morant Bay reaches about 28°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262825
272825
282825
292825
302825

How September really feels in Morant Bay

Once humidity and wind are folded in, September averages 19 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
19
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Morant Bay weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 22°6917.7116.0
Feb25° / 22°4915.511.46.1
Mar26° / 22°6617.511.96.0
Apr26° / 23°6316.112.45.8
May27° / 24°14421.212.84.9
Jun28° / 25°12518.813.15.0
Jul28° / 25°10117.9135.1
Aug28° / 25°12820.112.64.6
Sep28° / 25°16122.212.14.2
Oct28° / 24°19424.711.64.3
Nov27° / 24°12619.811.25.0
Dec26° / 23°9218.910.95.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24654
34753
44753
54951
64951
74951
85050
94951
104951
114951
124951
134852
144852
154852
164753
174654
184456
194456
204357
214258
224159
234060
244060
253961
263862
273763
283763
293664
303664

Chance of precipitation in September

Any precipitation

Morant Bay gets around 161 mm of rain over 22.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 74% and peaks near 81% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
170
270
370
470
570
670
770
870
971
1071
1172
1272
1372
1473
1573
1674
1774
1875
1975
2076
2177
2278
2378
2479
2579
2679
2780
2880
2980
3081

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
16634
26634
36634
46733
56733
66733
76832
86832
96832
106931
116931
127030
137030
147030
157030
167030
177030
187129
197129
207129
217129
227228
237228
247327
257327
267426
277426
287426
297525
307525

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over September. Sunrise moves from 5:55 AM to 5:59 AM, and sunset from 6:16 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:556:16
212.35:556:15
312.35:556:14
412.35:556:13
512.35:556:13
612.35:556:12
712.35:566:11
812.25:566:10
912.25:566:09
1012.25:566:08
1112.25:566:07
1212.25:566:07
1312.25:576:06
1412.15:576:05
1512.15:576:04
1612.15:576:03
1712.15:576:02
1812.15:576:01
1912.05:576:00
2012.05:585:59
2112.05:585:58
2212.05:585:58
2312.05:585:57
2412.05:585:56
2511.95:585:55
2611.95:595:54
2711.95:595:53
2811.95:595:52
2911.95:595:52
3011.95:595:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.97 kWh/m².

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.74 kWh/m² in April across the year — September's 5.97 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.1Intense
126.1Intense
136.1Intense
146.0Intense
156.0Intense
166.0Bright
176.0Bright
185.9Bright
195.9Bright
205.8Bright
215.8Bright
225.8Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.5Bright
285.5Bright
295.5Bright
305.4Bright
Planning a trip in September

Hazard calendar for Morant Bay

In seasonPeak

In September, Morant Bay sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Morant Bay sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Morant Bay?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.2
Sightseeing
12th-best month of the year
4.9
Beach & pool
11th-best month of the year

September is a reasonable time to visit Morant Bay for sightseeing.

What to pack for Morant Bay in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Morant Bay sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Morant Bay in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 29°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Morant Bay in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Morant Bay peaks around April 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 18UV 13Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in Morant Bay in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Morant Bay is worst in June — around 32 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (December, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2332 µg/m³Dec 198 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar10Good
Apr12Good
May19Moderate
Jun32Moderate
Jul31Moderate
Aug25Moderate
Sep17Moderate
Oct14Moderate
Nov9Good
Dec8Good
Location & terrain

Where is Morant Bay?

Morant Bay sits at 17.9°N, 76.4°W, 0 m above sea level, in Jamaica. The nearest listed city is Port Antonio, 33 km away.

Port AntonioNew KingstonKingstonHalf Way TreePort RoyalPortmoreSpanish TownLinstead

Topography around Morant Bay

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Morant Bay.

Within 3 km, the terrain around Morant Bay has only modest variations in elevation — a maximum elevation change of 221 m around an average of 27 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,315 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around Morant Bay is covered by trees (41%) and water (41%) within 3 km, trees (47%) and water (46%) within 16 km, and water (74%) and trees (23%) within 80 km.

3 km
221 m
16 km
1,315 m
80 km
2,224 m
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Port Antonio 33 km · New Kingston 42 km · Kingston 43 km · Half Way Tree 44 km · Port Royal 46 km · Portmore 51 km · Spanish Town 59 km · Linstead 72 km

Jamaica travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
110 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$8,003
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
49.4
per 100k, 2023
Road deaths
15.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 65%none 21%other 7%Roman Catholic 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Morant Bay (17.8815°, -76.4093°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).