Montego Bay weather in August

In August, Montego Bay sees average daytime highs of 31°C and overnight lows near 25°C, with 171 mm of rain across 26.2 wet days and about 12.6 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 21% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Montego Bay's 9th-clearest and 10th-windiest month. For the whole year in context, see Montego Bay's year-round climate.

Daytime high
31°
1st warmest
Overnight low
25°
12th coldest
Rainfall
171 mm
26.2 wet days
Daylight
12 h 36 min
5:57 AM – 6:35 PM
Cloud cover
63%
9th clearest
Wind
10 km/h
10th windiest
Solar energy
6.39 kWh/m²
Travel score
3.1
out of 10

Montego Bay is capital of Saint James Parish, Jamaica.

Founded
1980

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Montego Bay reaches about 31°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 31°C. Set against its neighbours, August runs on par with July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123126
133125
143125
153125
163125
173125
183125
193125
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
303025
313025

How August really feels in Montego Bay

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Montego Bay weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 22°4411.4116.6
Feb28° / 22°4011.311.46.5
Mar28° / 23°5812.711.96.1
Apr29° / 23°9316.312.44.9
May29° / 24°22023.912.93.8
Jun30° / 25°14821.813.13.5
Jul30° / 25°13823.4133.4
Aug31° / 25°17126.212.63.1
Sep30° / 25°20625.912.13.1
Oct29° / 25°18324.711.63.6
Nov28° / 24°9116.411.15.2
Dec28° / 23°5011.410.96.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 25% of August, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45347
55248
65149
75149
85149
95050
104951
114951
124852
134852
144753
154753
164654
174654
184654
194555
204456
214357
224357
234258
244159
254159
264159
274159
284159
294159
304159
314258

Chance of precipitation in August

Any precipitation

Montego Bay gets around 171 mm of rain over 26.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 84% and peaks near 86% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
180
281
382
482
582
683
783
883
983
1083
1183
1283
1384
1484
1584
1684
1784
1885
1985
2085
2185
2285
2385
2486
2586
2686
2786
2886
2985
3085
3185

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13466
23466
33367
43367
53268
63169
73169
83070
93070
103070
112971
122971
132872
142872
152773
162773
172773
182674
192674
202674
212674
222674
232575
242575
252575
262674
272674
282674
292674
302773
312773

Wind in August

Winds average 10 km/h in August.

Across August, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 5:52 AM to 6:00 AM, and sunset from 6:43 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:526:43
212.85:536:43
312.85:536:42
412.85:536:42
512.85:546:41
612.85:546:41
712.85:546:40
812.75:556:40
912.75:556:39
1012.75:556:38
1112.75:566:38
1212.75:566:37
1312.75:566:37
1412.75:566:36
1512.65:576:35
1612.65:576:35
1712.65:576:34
1812.65:576:33
1912.65:586:33
2012.65:586:32
2112.65:586:31
2212.55:586:30
2312.55:596:30
2412.55:596:29
2512.55:596:28
2612.55:596:27
2712.55:596:27
2812.46:006:26
2912.46:006:25
3012.46:006:24
3112.46:006:23

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.39 kWh/m².

For context, solar energy here swings from a low near 4.43 kWh/m² to a high of 6.68 kWh/m² in April across the year — August's 6.39 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in August

Hazard calendar for Montego Bay

In seasonPeak

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

Montego 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 August a good time to visit Montego Bay?

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

3.1
Sightseeing
11th-best month of the year
4.4
Beach & pool
11th-best month of the year

August is a weaker month for outdoor sightseeing in Montego Bay.

What to pack for Montego Bay in August

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

In August, Montego Bay sees daytime highs around 31°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Montego Bay in August

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

The sea at the nearest coast (about 18 km away) is warmest in September at about 30°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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr28Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Montego Bay in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Montego Bay peaks around April 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 16UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep11Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in Montego Bay in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Montego Bay is worst in June — around 32 µg/m³ PM2.5 (moderate), about 4.3× the cleanest month (December, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2231 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr13Moderate
May18Moderate
Jun32Moderate
Jul30Moderate
Aug23Moderate
Sep16Moderate
Oct13Moderate
Nov8Good
Dec7Good
Location & terrain

Where is Montego Bay?

Montego Bay sits at 18.5°N, 77.9°W, 12 m above sea level, in Jamaica. The nearest listed city is Barrett Town, 13 km away.

Barrett TownFalmouthSavanna-la-MarNegrilMandevilleOcho RiosMay PenLinstead

Topography around Montego Bay

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

Within 3 km, the terrain around Montego Bay has only modest variations in elevation — a maximum elevation change of 213 m around an average of 40 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 599 m; within 80 km, large variations in elevation — a maximum elevation change of 978 m.

The land around Montego Bay is covered by trees (31%), artificial surfaces (31%) and water (27%) within 3 km, trees (50%) and water (43%) within 16 km, and water (60%) and trees (32%) within 80 km.

3 km
213 m
16 km
599 m
80 km
978 m
treesgrasslandartificial surfaceswaterwetlandmangroves
August weather nearby: Barrett Town 13 km · Falmouth 28 km · Savanna-la-Mar 36 km · Negril 51 km · Mandeville 65 km · Ocho Rios 86 km · May Pen 91 km · Linstead 101 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 Montego Bay (18.4712°, -77.9188°, elevation 12 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).