San Ignacio weather in December

In December, San Ignacio sees average daytime highs of 28°C and overnight lows near 19°C, with 57 mm of rain across 13.6 wet days and about 11 hours of daylight. It is the 11th-warmest and 8th-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 December, and the air most often feels oppressive.

Daylight stretches from about 11 hours at the start of December to 11 hours by month's end. Set against the rest of the year, December is San Ignacio's 5th-clearest and 9th-windiest month. For the whole year in context, see San Ignacio's year-round climate.

Daytime high
28°
11th warmest
Overnight low
19°
2nd coldest
Rainfall
57 mm
13.6 wet days
Daylight
11 hours
6:23 AM – 5:22 PM
Cloud cover
54%
5th clearest
Wind
7 km/h
9th windiest
Solar energy
3.62 kWh/m²
Travel score
5.8
out of 10

San Ignacio is capital of the Cayo district.

Density
2,104/km²
people per km²
Founded
1800

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

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 San Ignacio reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819
312819

How December really feels in San Ignacio

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.

San Ignacio weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°501311.16.0
Feb29° / 19°308.911.45.5
Mar32° / 20°338.211.94.5
Apr34° / 22°387.312.43.5
May34° / 24°8913.912.82.8
Jun32° / 24°15122.7132.7
Jul32° / 23°9821.412.93.0
Aug33° / 23°11220.412.62.7
Sep32° / 23°14523.712.12.5
Oct30° / 22°14821.611.63.4
Nov29° / 20°9815.611.24.9
Dec28° / 19°5713.6115.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 27% of December, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25941
35941
46040
56139
66139
76238
86238
96238
106238
116238
126238
136139
146139
156139
166139
176040
186040
196040
206040
215842
225842
235842
245842
255842
265842
275743
285743
295743
305743
315743

Chance of precipitation in December

Any precipitation

San Ignacio gets around 57 mm of rain over 13.6 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 44% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
244
344
444
544
644
744
844
944
1044
1144
1244
1344
1444
1544
1644
1744
1844
1944
2044
2144
2244
2344
2444
2544
2645
2745
2845
2945
3045
3145

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1131335481
2131335481
3131335471
4131236471
5141236471
6141236461
7141236461
8151235461
9151235461
10151235451
11261234451
12261334451
13261333451
14261333441
15261333441
16271332441
17271432441
18271432431
19271432432
20271432432
21271433432
22271433422
23271433422
24271433422
25261434421
26261434421
27271434421
28271434421
29271434411
30271435411
31271435401

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 6:15 AM to 6:30 AM, and sunset from 5:17 PM to 5:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:155:17
211.06:155:18
311.06:165:18
411.06:165:18
511.06:175:18
611.06:175:19
711.06:185:19
811.06:195:19
911.06:195:19
1011.06:205:20
1111.06:205:20
1211.06:215:20
1311.06:215:21
1411.06:225:21
1511.06:225:21
1611.06:235:22
1711.06:245:22
1811.06:245:23
1911.06:255:23
2011.06:255:24
2111.06:265:24
2211.06:265:24
2311.06:265:25
2411.06:275:25
2511.06:275:26
2611.06:285:26
2711.06:285:27
2811.06:295:27
2911.06:295:28
3011.06:295:29
3111.06:305:29

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.62 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.62 kWh/m² to a high of 6.02 kWh/m² in April across the year — December's 3.62 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.6Moderate
43.6Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.6Moderate
303.6Moderate
313.6Moderate
Planning a trip in December

Is December a good time to visit San Ignacio?

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

5.8
Sightseeing
2nd-best month of the year
6.3
Beach & pool
5th-best month of the year

December is a reasonable time to visit San Ignacio for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Ignacio in December

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

In December, San Ignacio sees daytime highs around 28°C and nights near 19°C. Pack light clothes. Worth having: rain gear. About 14 days see rain.

light clothesrain gear

UV index in San Ignacio in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Ignacio peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 10UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May10Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in San Ignacio 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 San Ignacio is worst in May — around 30 µg/m³ PM2.5 (moderate), about 5.2× the cleanest month (December, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1529 µg/m³Dec 186 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar10Good
Apr28Moderate
May30Moderate
Jun26Moderate
Jul28Moderate
Aug19Moderate
Sep14Moderate
Oct10Good
Nov7Good
Dec6Good
Location & terrain

Where is San Ignacio?

San Ignacio sits at 17.2°N, 89.1°W, 0 m above sea level, in Belize. The nearest listed city is Melchor de Mencos, 14 km away.

BelmopanCrooked TreeHopkinsDangriga

Topography around San Ignacio

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

Within 3 km, the terrain around San Ignacio has only modest variations in elevation — a maximum elevation change of 131 m around an average of 92 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 451 m; within 80 km, large variations in elevation — a maximum elevation change of 1,118 m.

The land around San Ignacio is covered by trees (55%) and grassland (24%) within 3 km, trees (66%) and grassland (29%) within 16 km, and trees (79%) within 80 km.

3 km
131 m
16 km
451 m
80 km
1,118 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Melchor de Mencos 14 km · Belmopan 34 km · Crooked Tree 89 km · Hopkins 90 km · Dangriga 91 km · Flores 92 km · San Benito 94 km · Poptún 99 km

Belize travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / G
110 / 220 V · 60 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$7,865
2025
Happiness
6.7 / 10
World Happiness, 2025
Homicide rate
28.1
per 100k, 2022
Road deaths
22.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Roman Catholic 40%Protestant 32%none 16%other 11%

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 San Ignacio (17.1588°, -89.0696°, 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).