Trinidad weather in September

In September, Trinidad sees average daytime highs of 25°C and overnight lows near 15°C, with 152 mm of rain across 10 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Trinidad's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Trinidad's year-round climate.

Daytime high
25°
8th warmest
Overnight low
15°
5th coldest
Rainfall
152 mm
10 wet days
Daylight
11 h 48 min
6:42 AM – 6:32 PM
Cloud cover
49%
2nd clearest
Wind
11 km/h
2nd windiest
Solar energy
4.62 kWh/m²
Travel score
7.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical September day in Trinidad reaches about 25°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 33°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62514
72514
82514
92514
102515
112515
122515
132515
142515
152515
162515
172515
182515
192515
202515
212515
222615
232615
242615
252615
262616
272616
282616
292616
302616

How September really feels in Trinidad

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Trinidad weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°15714.213.53.8
Feb31° / 21°15114134.0
Mar30° / 20°13111.512.25.0
Apr27° / 17°1611011.46.5
May23° / 14°1488.910.77.1
Jun21° / 13°1248.610.36.8
Jul21° / 12°1218.910.56.9
Aug24° / 13°917.7117.6
Sep25° / 15°1521011.87.0
Oct28° / 17°22212.612.76.0
Nov29° / 19°16611.113.35.3
Dec31° / 21°17612.813.74.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16238
26238
36139
46040
56040
65941
75842
85842
95743
105842
115842
125842
135842
145842
155842
165842
175842
185743
195743
205743
215743
225743
235644
245545
255545
265446
275347
285248
295248
305149

Chance of precipitation in September

Any precipitation

Trinidad gets around 152 mm of rain over 10 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 33% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
128
228
328
429
529
629
730
830
931
1031
1131
1232
1332
1432
1533
1633
1734
1834
1934
2035
2135
2236
2336
2436
2536
2637
2737
2837
2937
3038

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
138282770
238282780
337282780
437282690
5372726100
6362726100
7362726110
8362725120
9362625120
10362625130
11362624130
12362624140
13362524140
14352524150
15352525150
16352425151
17352425151
18352326161
19342326161
20342326161
21332327171
22322327171
23312328181
24302228181
25292229191
26282229201
27272329211
28262329221
29252329231
30242328241

Wind in September

Winds average 11 km/h in September.

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

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

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

Days grow by about 48 minutes over September. Sunrise moves from 6:59 AM to 6:25 AM, and sunset from 6:26 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:596:26
211.56:586:26
311.56:576:27
411.56:566:27
511.56:556:27
611.66:546:28
711.66:536:28
811.66:516:29
911.76:506:29
1011.76:496:30
1111.76:486:30
1211.76:476:31
1311.86:456:31
1411.86:446:31
1511.86:436:32
1611.86:426:32
1711.96:416:33
1811.96:406:33
1911.96:386:34
2012.06:376:34
2112.06:366:35
2212.06:356:35
2312.06:346:36
2412.16:326:36
2512.16:316:37
2612.16:306:37
2712.16:296:37
2812.26:286:38
2912.26:266:38
3012.26:256:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 2.62 kWh/m² to a high of 6.65 kWh/m² in December across the year — September's 4.62 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
305.0Bright
Planning a trip in September

Is September a good time to visit Trinidad?

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

7.0
Sightseeing
3rd-best month of the year
6.4
Beach & pool
5th-best month of the year

September is one of the better times to visit Trinidad for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Trinidad in September

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

In September, Trinidad sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Trinidad in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Trinidad peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 18UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct7Very high
Nov11Extreme
Dec13Extreme

Air quality in Trinidad 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 Trinidad is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (March, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1519 µg/m³Mar 167 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr8Good
May7Good
Jun8Good
Jul9Good
Aug14Moderate
Sep19Moderate
Oct12Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Trinidad?

Trinidad sits at 27.1°S, 55.7°W, 0 m above sea level, in Paraguay. The nearest listed city is Encarnación, 27 km away.

Leandro N. AlemOberáPuerto RicoApóstoles

Topography around Trinidad

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

Within 3 km, the terrain around Trinidad has only modest variations in elevation — a maximum elevation change of 106 m around an average of 127 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, significant variations in elevation — a maximum elevation change of 443 m.

The land around Trinidad is covered by trees (52%) and grassland (44%) within 3 km, trees (40%), grassland (27%) and cropland (27%) within 16 km, and trees (47%) and grassland (27%) within 80 km.

3 km
106 m
16 km
204 m
80 km
443 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Encarnación 27 km · Posadas 36 km · Garupá 41 km · Jardín América 48 km · Leandro N. Alem 65 km · Oberá 70 km · Puerto Rico 77 km · Apóstoles 87 km

Paraguay travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / N
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$7,027
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
64%
of population, 2024
Homicide rate
6.8
per 100k, 2023
Road deaths
22
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 531
Religion
Roman Catholic 80%Protestant 7%Believer 6%other 1%

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 Trinidad (-27.131°, -55.7058°, 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. 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).