Monte Llano weather in December

In December, Monte Llano sees average daytime highs of 26°C and overnight lows near 23°C, with 94 mm of rain across 16 wet days and about 10.8 hours of daylight. It is the 9th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 57% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 10 h 54 min at the start of December to 10 h 48 min by month's end. Set against the rest of the year, December is Monte Llano's 5th-clearest and 7th-windiest month. For the whole year in context, see Monte Llano's year-round climate.

Daytime high
26°
9th warmest
Overnight low
23°
5th coldest
Rainfall
94 mm
16 wet days
Daylight
10 h 48 min
7:14 AM – 6:03 PM
Cloud cover
41%
5th clearest
Wind
18 km/h
7th windiest
Solar energy
4.05 kWh/m²
Travel score
6.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Monte Llano reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52623
62623
72623
82623
92623
102623
112623
122623
132623
142623
152623
162623
172623
182623
192623
202623
212623
222623
232623
242623
252623
262623
272623
282623
292623
302623
312523

How December really feels in Monte Llano

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.

Monte Llano weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 22°9714.610.96.5
Feb25° / 22°6312.111.36.8
Mar25° / 22°7611.511.97.0
Apr26° / 23°7212.912.46.6
May27° / 24°7113.212.96.1
Jun28° / 25°276.813.26.4
Jul28° / 25°379.513.16.2
Aug28° / 25°4410.212.75.8
Sep29° / 25°6413.512.15.3
Oct28° / 25°8516.111.55.4
Nov27° / 24°12118.211.15.5
Dec26° / 23°941610.86.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 22%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27822
37822
47822
57822
67822
77822
87822
97822
107822
117822
127822
137822
147822
157822
167822
177822
187822
197723
207723
217723
227822
237822
247822
257921
267921
277921
287921
298020
307921
317921

Chance of precipitation in December

Any precipitation

Monte Llano gets around 94 mm of rain over 16 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 52% and peaks near 57% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
157
256
356
456
555
655
754
854
953
1053
1152
1252
1352
1452
1552
1651
1751
1851
1951
2051
2151
2250
2350
2450
2550
2650
2751
2851
2951
3051
3151

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 48% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1043957
2043957
3053956
4053956
5053956
6053956
7063856
8063856
9063856
10063856
11073954
12173953
13174052
14174052
15174151
16174250
17174349
18174448
19174547
20174646
21274745
22274844
23274943
24275042
25275041
26265240
27265339
28265537
29265636
30265735
31165934

Wind in December

Winds average 18 km/h in December.

Across December, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 54 min at the start of December to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:05 AM to 7:21 AM, and sunset from 5:59 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.97:055:59
210.97:065:59
310.97:075:59
410.97:075:59
510.97:086:00
610.97:086:00
710.97:096:00
810.87:106:00
910.87:106:01
1010.87:116:01
1110.87:116:01
1210.87:126:02
1310.87:126:02
1410.87:136:02
1510.87:146:03
1610.87:146:03
1710.87:156:03
1810.87:156:04
1910.87:166:04
2010.87:166:05
2110.87:176:05
2210.87:176:06
2310.87:186:06
2410.87:186:07
2510.87:196:07
2610.87:196:08
2710.87:196:08
2810.87:206:09
2910.87:206:09
3010.87:216:10
3110.87:216:10

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.05 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 6.83 kWh/m² in June across the year — December's 4.05 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.0Bright
154.0Bright
164.0Bright
174.0Bright
184.0Bright
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
314.0Bright
Planning a trip in December

Hazard calendar for Monte Llano

In seasonPeak

None of Monte Llano's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Monte Llano 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 December a good time to visit Monte Llano?

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

6.1
Sightseeing
7th-best month of the year
5.8
Beach & pool
11th-best month of the year

December is a reasonable time to visit Monte Llano for sightseeing.

What to pack for Monte Llano in December

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

In December, Monte Llano sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes. About 16 days see rain.

rain gearlight clothes

Sea temperature near Monte Llano 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 16 km away) is warmest in September at about 29°C and coldest in February near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr26Warm
May27Warm
Jun28Warm
Jul28Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Monte Llano in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Monte Llano peaks around March 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighMar 23UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Monte Llano 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 Monte Llano is worst in June — around 30 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (February, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2030 µg/m³Feb 2016 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb16Moderate
Mar16Moderate
Apr18Moderate
May23Moderate
Jun30Moderate
Jul28Moderate
Aug25Moderate
Sep26Moderate
Oct27Moderate
Nov20Moderate
Dec17Moderate
Location & terrain

Where is Monte Llano?

Monte Llano sits at 19.7°N, 70.6°W, 12 m above sea level, in Dominican Republic. The nearest listed city is Sosua, 9.0 km away.

TamborilSantiago de los CaballerosVilla BisonóMoca

Topography around Monte Llano

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

Within 3 km, the terrain around Monte Llano has only modest variations in elevation — a maximum elevation change of 120 m around an average of 22 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 940 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,368 m.

The land around Monte Llano is covered by trees (52%) and grassland (36%) within 3 km, trees (51%) and water (31%) within 16 km, and trees (44%) and water (35%) within 80 km.

3 km
120 m
16 km
940 m
80 km
2,368 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Sosua 9.0 km · Puerto Plata 11 km · Río Grande 19 km · Cabarete 20 km · Tamboril 28 km · Santiago de los Caballeros 33 km · Villa Bisonó 35 km · Moca 39 km

Dominican Republic travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
120 V · 60 Hz
Prices
≈ 39% of US
price level, 2025
GDP per capita
$11,059
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
45%
of population, 2024
Homicide rate
10.9
per 100k, 2023
Road deaths
64.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 503

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 Monte Llano (19.7346°, -70.5991°, 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).