Mon Repos weather in December

In December, Mon Repos sees average daytime highs of 28°C and overnight lows near 24°C, with 89 mm of rain across 17 wet days and about 11.4 hours of daylight. It is the 11th-warmest and 7th-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 30% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 24 min at the start of December to 11 h 24 min by month's end. Set against the rest of the year, December is Mon Repos's 4th-clearest and 7th-windiest month. For the whole year in context, see Mon Repos's year-round climate.

Daytime high
28°
11th warmest
Overnight low
24°
4th coldest
Rainfall
89 mm
17 wet days
Daylight
11 h 24 min
6:20 AM – 5:44 PM
Cloud cover
58%
4th clearest
Wind
15 km/h
7th windiest
Solar energy
4.74 kWh/m²
Travel score
5.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in Mon Repos reaches about 28°C in the afternoon and slips back to 24°C overnight — a 3°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, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122824
132824
142824
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824
312824

How December really feels in Mon Repos

Once humidity and wind are folded in, December 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

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

Mon Repos weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°399.111.56.7
Feb28° / 24°185.411.77.0
Mar28° / 24°22511.96.5
Apr29° / 25°28612.25.9
May29° / 25°6112.312.55.1
Jun28° / 25°13821.812.64.1
Jul28° / 25°15226.312.53.7
Aug29° / 25°16526.512.33.6
Sep29° / 26°12322.412.13.8
Oct29° / 25°13223.111.83.9
Nov28° / 25°14423.711.54.0
Dec28° / 24°891711.45.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 25% of December, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34555
44555
54753
64753
74852
84753
94951
105050
115149
125149
135248
145248
155347
165347
175446
185446
195644
205644
215743
225842
235941
246139
256139
266337
276535
286535
296733
306733
316931

Chance of precipitation in December

Any precipitation

Mon Repos gets around 89 mm of rain over 17 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
171
271
370
469
567
666
765
864
962
1061
1160
1259
1358
1457
1555
1654
1753
1852
1951
2050
2149
2248
2347
2446
2545
2644
2743
2842
2941
3040
3139

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
108515
218514
318613
418712
518811
618910
71909
82908
92917
102926
112935
123925
133934
143934
153943
163943
174942
184942
194942
204942
214942
224942
235941
245941
255941
265941
276931
286931
296931
307921
317930

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 6:12 AM to 6:27 AM, and sunset from 5:39 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:125:39
211.46:135:39
311.46:135:39
411.46:145:40
511.46:145:40
611.46:155:40
711.46:155:41
811.46:165:41
911.46:165:41
1011.46:175:42
1111.46:175:42
1211.46:185:42
1311.46:185:43
1411.46:195:43
1511.46:195:44
1611.46:205:44
1711.46:205:44
1811.46:215:45
1911.46:215:45
2011.46:225:46
2111.46:225:46
2211.46:235:47
2311.46:235:47
2411.46:245:48
2511.46:245:48
2611.46:255:49
2711.46:255:49
2811.46:255:50
2911.46:265:50
3011.46:265:51
3111.46:275:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.74 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.74 kWh/m² to a high of 6.25 kWh/m² in April across the year — December's 4.74 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Mon Repos

In seasonPeak

In December, Mon Repos sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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

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

Is December a good time to visit Mon Repos?

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

5.4
Sightseeing
5th-best month of the year
5.8
Beach & pool
6th-best month of the year

December is a reasonable time to visit Mon Repos for sightseeing.

What to pack for Mon Repos in December

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

In December, Mon Repos sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Mon Repos in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 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 Mon Repos in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mon Repos peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 12UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Mon Repos in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Mon Repos is worst in June — around 31 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1530 µg/m³Nov 2314 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar19Moderate
Apr23Moderate
May26Moderate
Jun31Moderate
Jul24Moderate
Aug18Moderate
Sep15Moderate
Oct17Moderate
Nov14Moderate
Dec15Moderate
Location & terrain

Where is Mon Repos?

Mon Repos sits at 10.3°N, 61.4°W, 37 m above sea level, in Trinidad and Tobago. The nearest listed city is San Fernando, 2.0 km away.

ChaguanasPoint FortinRio ClaroLaventilleTunapunaParadise

Topography around Mon Repos

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

Within 3 km, the terrain around Mon Repos has only modest variations in elevation — a maximum elevation change of 156 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 318 m; within 80 km, large variations in elevation — a maximum elevation change of 1,036 m.

The land around Mon Repos is covered by artificial surfaces (50%) and grassland (30%) within 3 km, grassland (34%), water (26%) and trees (25%) within 16 km, and water (66%) and trees (22%) within 80 km.

3 km
156 m
16 km
318 m
80 km
1,036 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: San Fernando 2.0 km · Marabella 3.0 km · Chaguanas 27 km · Point Fortin 29 km · Rio Claro 30 km · Laventille 41 km · Tunapuna 42 km · Paradise 42 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 Mon Repos (10.2798°, -61.4459°, elevation 37 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. 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).