Scarborough weather in September

In September, Scarborough sees average daytime highs of 28°C and overnight lows near 26°C, with 150 mm of rain across 21 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 5th-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 33% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Scarborough's 8th-clearest and 12th-windiest month. For the whole year in context, see Scarborough's year-round climate.

Daytime high
28°
1st warmest
Overnight low
26°
12th coldest
Rainfall
150 mm
21 wet days
Daylight
12 h 06 min
5:55 AM – 5:59 PM
Cloud cover
60%
8th clearest
Wind
20 km/h
12th windiest
Solar energy
5.85 kWh/m²
Travel score
4.4
out of 10

Scarborough is town in Trinidad and Tobago.

Density
1,700/km²
people per km²
Founded
1654

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 Scarborough reaches about 28°C in the afternoon and slips back to 26°C overnight — a 2°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.

24°26°28°30°32°151015202530
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826

How September really feels in Scarborough

Once humidity and wind are folded in, September averages 30 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
30
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.

Scarborough weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 25°5812.811.46.6
Feb26° / 25°288.511.67.1
Mar26° / 25°257.211.97.3
Apr27° / 26°317.712.26.8
May27° / 26°6712.612.56.1
Jun27° / 26°14921.112.64.7
Jul27° / 26°17124.812.64.4
Aug28° / 26°17424.812.44.4
Sep28° / 26°1502112.14.4
Oct28° / 26°16523.211.74.4
Nov28° / 26°18023.311.54.5
Dec27° / 26°9817.811.45.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16238
26139
36040
45941
55941
65842
75644
85545
95446
105149
115050
124951
134852
144654
154555
164555
174456
184456
194456
204456
214357
224357
234357
244357
254258
264258
274159
284060
294060
304060

Chance of precipitation in September

Any precipitation

Scarborough gets around 150 mm of rain over 21 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 71% and peaks near 74% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
169
268
369
469
569
670
771
871
972
1073
1173
1274
1374
1474
1574
1674
1773
1873
1972
2071
2171
2270
2370
2470
2570
2670
2770
2871
2971
3072

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
15149
25050
34951
44852
54852
64753
74654
84654
94555
104555
114555
124456
134456
144456
154456
164456
174456
184555
194555
204555
214555
224555
234654
244654
254654
264654
274654
284654
294654
304654

Wind in September

Winds average 20 km/h in September, the calmest month.

Across September, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
120light breeze
220light breeze
320light breeze
420light breeze
520light breeze
620light breeze
720light breeze
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 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 18 minutes over September. Sunrise moves from 5:56 AM to 5:55 AM, and sunset from 6:09 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:566:09
212.25:566:09
312.25:566:08
412.25:566:07
512.25:566:07
612.25:566:06
712.25:566:05
812.15:566:05
912.15:566:04
1012.15:566:03
1112.15:566:03
1212.15:566:02
1312.15:566:01
1412.15:566:00
1512.15:556:00
1612.15:555:59
1712.15:555:58
1812.05:555:58
1912.05:555:57
2012.05:555:56
2112.05:555:56
2212.05:555:55
2312.05:555:54
2412.05:555:54
2512.05:555:53
2612.05:555:52
2711.95:555:52
2811.95:555:51
2911.95:555:50
3011.95:555:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.85 kWh/m².

For context, solar energy here swings from a low near 4.94 kWh/m² to a high of 6.5 kWh/m² in April across the year — September's 5.85 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.6Bright
305.6Bright
Planning a trip in September

Hazard calendar for Scarborough

In seasonPeak

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

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

Scarborough's rainy season runs June–December, when most of the year's rain falls.

Scarborough sees seasonal dust haze (June), heaviest in June.

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

Is September a good time to visit Scarborough?

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

4.4
Sightseeing
9th-best month of the year
5.0
Beach & pool
7th-best month of the year

September is a reasonable time to visit Scarborough for sightseeing.

What to pack for Scarborough in September

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

In September, Scarborough sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 21 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Scarborough 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 at the nearest coast (about 14 km away) 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
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Scarborough in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Scarborough peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 21UV 14Dec 13UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Scarborough 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 Scarborough is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (January, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1631 µg/m³Jan 114 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar17Moderate
Apr21Moderate
May24Moderate
Jun32Moderate
Jul24Moderate
Aug19Moderate
Sep14Moderate
Oct17Moderate
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Scarborough?

Scarborough sits at 11.2°N, 60.7°W, 9 m above sea level, in Trinidad and Tobago. The nearest listed city is Sangre Grande, 79 km away.

Sangre GrandeArimaParadiseTunapunaLaventillePort of SpainDiego MartinChaguanas

Topography around Scarborough

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

Within 3 km, the terrain around Scarborough has only modest variations in elevation — a maximum elevation change of 238 m around an average of 54 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 576 m; within 80 km, large variations in elevation — a maximum elevation change of 930 m.

The land around Scarborough is covered by trees (48%) and water (32%) within 3 km, water (75%) and trees (22%) within 16 km, and water (89%) within 80 km.

3 km
238 m
16 km
576 m
80 km
930 m
treesgrasslandartificial surfaceswater
September weather nearby: Sangre Grande 79 km · Arima 85 km · Paradise 90 km · Tunapuna 93 km · Laventille 102 km · Port of Spain 103 km · Diego Martin 104 km · Chaguanas 105 km

Trinidad and Tobago travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
115 / 230 V · 60 Hz
Prices
≈ 51% of US
price level, 2025
GDP per capita
$18,967
2025
Happiness
5.9 / 10
World Happiness, 2025
Safe drinking water
69%
of population, 2024
Homicide rate
40.4
per 100k, 2022
Road deaths
9.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 32%Roman Catholic 22%Hindu 18%other 8%

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 Scarborough (11.1823°, -60.7353°, elevation 9 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).