Arima weather in December

In December, Arima sees average daytime highs of 27°C and overnight lows near 25°C, with 117 mm of rain across 21.7 wet days and about 11.4 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 38% 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 Arima's 4th-clearest and 7th-windiest month. For the whole year in context, see Arima's year-round climate.

Daytime high
27°
9th warmest
Overnight low
25°
4th coldest
Rainfall
117 mm
21.7 wet days
Daylight
11 h 24 min
6:20 AM – 5:43 PM
Cloud cover
53%
4th clearest
Wind
22 km/h
7th windiest
Solar energy
4.87 kWh/m²
Travel score
5.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Arima reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°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)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172724
182724
192724
202724
212724
222724
232724
242724
252724
262724
272724
282724
292724
302724
312624

How December really feels in Arima

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.

Arima weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 24°7017.311.45.9
Feb26° / 24°3812.111.66.4
Mar27° / 24°329.111.96.8
Apr27° / 25°358.612.26.5
May28° / 25°671412.55.7
Jun27° / 25°14122.912.64.5
Jul27° / 25°16026.712.64.1
Aug28° / 25°16426.812.43.9
Sep28° / 26°12722.612.14.0
Oct28° / 25°14524.111.84.1
Nov27° / 25°16624.711.54.2
Dec27° / 25°11721.711.45.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35149
45149
55347
65446
75446
85644
95743
105743
115842
126040
136040
146139
156238
166139
176238
186238
196337
206337
216337
226337
236535
246535
256634
266733
276832
286931
297030
307129
317228

Chance of precipitation in December

Any precipitation

Arima gets around 117 mm of rain over 21.7 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 71% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
180
279
379
478
577
677
776
875
975
1074
1173
1272
1371
1471
1570
1669
1769
1868
1967
2067
2167
2266
2366
2466
2566
2665
2765
2865
2965
3064
3164

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
12935
22944
32944
42944
52953
63943
73952
83952
94942
104951
115941
125941
135941
146940
156940
166940
176940
186940
196940
206940
216940
226940
236940
246940
256940
266940
277930
287930
297930
307930
318920

Wind in December

Winds average 22 km/h in December.

Across December, daily wind ranges from about 20 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
420breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2623breezy
2723breezy
2823breezy
2923breezy
3023breezy
3123breezy

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 5:38 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:125:38
211.46:135:38
311.46:135:38
411.46:145:38
511.46:145:39
611.46:155:39
711.46:155:39
811.46:165:40
911.46:165:40
1011.46:175:40
1111.46:175:41
1211.46:185:41
1311.46:185:41
1411.46:195:42
1511.46:195:42
1611.46:205:43
1711.46:205:43
1811.46:215:44
1911.46:215:44
2011.46:225:44
2111.46:225:45
2211.46:235:45
2311.46:235:46
2411.46:245:46
2511.46:245:47
2611.46:255:47
2711.46:255:48
2811.46:255:48
2911.46:265:49
3011.46:265:49
3111.46:275:50

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.87 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.87 kWh/m² to a high of 6.45 kWh/m² in April across the year — December's 4.87 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in December

Is December a good time to visit Arima?

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

5.0
Sightseeing
6th-best month of the year
4.9
Beach & pool
6th-best month of the year

December is a reasonable time to visit Arima for sightseeing.

What to pack for Arima in December

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

In December, Arima sees daytime highs around 27°C and nights near 25°C. Pack rain gear. Worth having: light clothes, sun protection and a windbreaker. About 22 days see rain.

rain gearlight clothessun protectiona windbreaker

Sea temperature near Arima in December

The nearest coast averages about 27°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 28 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
May27Warm
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Arima 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 Arima 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
Mar15Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Arima 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 Arima 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 Arima?

Arima sits at 10.6°N, 61.3°W, 62 m above sea level, in Trinidad and Tobago. The nearest listed city is Paradise, 9.0 km away.

ParadiseTunapunaSangre GrandeChaguanasLaventillePort of SpainDiego MartinRio Claro

Topography around Arima

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

Within 3 km, the terrain around Arima has significant variations in elevation — a maximum elevation change of 343 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 940 m; within 80 km, large variations in elevation — a maximum elevation change of 961 m.

The land around Arima is covered by artificial surfaces (44%) and trees (41%) within 3 km, trees (70%) within 16 km, and water (72%) and trees (21%) within 80 km.

3 km
343 m
16 km
940 m
80 km
961 m
treesgrasslandartificial surfaceswaterwetland
December weather nearby: Paradise 9.0 km · Tunapuna 12 km · Sangre Grande 18 km · Chaguanas 20 km · Laventille 24 km · Port of Spain 26 km · Diego Martin 32 km · Rio Claro 39 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 Arima (10.6374°, -61.2823°, elevation 62 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).