Guastatoya weather in December

In December, Guastatoya sees average daytime highs of 24°C and overnight lows near 14°C, with 11 mm of rain across 2.6 wet days and about 11.1 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 38% of the time in December, and the air most often feels comfortable.

Daylight stretches from about 11 h 12 min at the start of December to 11 h 06 min by month's end. Set against the rest of the year, December is Guastatoya's 4th-clearest and 4th-windiest month. For the whole year in context, see Guastatoya's year-round climate.

Daytime high
24°
12th warmest
Overnight low
14°
3rd coldest
Rainfall
11 mm
2.6 wet days
Daylight
11 h 06 min
6:23 AM – 5:30 PM
Cloud cover
48%
4th clearest
Wind
7 km/h
4th windiest
Solar energy
4.57 kWh/m²
Travel score
8.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical December day in Guastatoya reaches about 24°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°C. Set against its neighbours, December runs on par with November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12414
22414
32414
42414
52414
62414
72414
82414
92414
102414
112414
122414
132414
142414
152413
162413
172413
182413
192413
202413
212413
222413
232413
242413
252413
262413
272413
282413
292413
302413
312413

Guastatoya weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 13°62.111.28.5
Feb26° / 13°41.311.58.4
Mar28° / 14°123.211.97.7
Apr29° / 16°417.312.36.1
May28° / 17°14317.712.74.9
Jun26° / 17°21524.312.94.2
Jul26° / 16°11418.712.85.2
Aug26° / 17°13820.112.54.9
Sep26° / 17°21624.912.14.1
Oct25° / 16°14318.811.75.3
Nov24° / 15°326.111.37.5
Dec24° / 14°112.611.18.4

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 26% of December, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25842
35941
45941
56040
66139
76238
86238
96337
106337
116337
126436
136436
146436
156436
166436
176436
186535
196535
206535
216535
226535
236535
246535
256535
266535
276535
286535
296535
306535
316535

Chance of precipitation in December

Any precipitation

Guastatoya gets around 11 mm of rain over 2.6 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 8% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
310
410
59
69
79
88
98
108
118
128
138
148
158
168
178
188
198
208
218
228
238
248
258
268
278
288
298
308
318

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the comfortable band about 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1155629
2155728
3155926
4156025
5156223
6156322
7156421
8156520
9166519
10166519
11176518
12176518
13186517
14196417
15196516
16206416
17216415
18226414
19236314
20236413
21246313
22246412
23256411
24256411
25256510
2625669
2725669
2826668
2926668
3026677
3127667

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 7 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
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 12 min at the start of December to 11 h 06 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 6:15 AM to 6:29 AM, and sunset from 5:26 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:155:26
211.26:155:26
311.26:165:26
411.26:165:26
511.26:175:26
611.26:175:27
711.26:185:27
811.16:185:27
911.16:195:28
1011.16:205:28
1111.16:205:28
1211.16:215:29
1311.16:215:29
1411.16:225:29
1511.16:225:30
1611.16:235:30
1711.16:235:31
1811.16:245:31
1911.16:245:31
2011.16:255:32
2111.16:255:32
2211.16:265:33
2311.16:265:33
2411.16:275:34
2511.16:275:34
2611.16:275:35
2711.16:285:35
2811.16:285:36
2911.16:295:36
3011.16:295:37
3111.16:295:37

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.57 kWh/m².

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.23 kWh/m² in April across the year — December's 4.57 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in December

Hazard calendar for Guastatoya

In seasonPeak

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

Guastatoya's monsoon runs May–October, when most of the year's rain falls.

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

Is December a good time to visit Guastatoya?

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

8.4
Sightseeing
2nd-best month of the year
7.1
Beach & pool
5th-best month of the year

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

What to pack for Guastatoya in December

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

In December, Guastatoya sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes and sun protection.

light clothessun protection

UV index in Guastatoya 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 Guastatoya peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highApr 12UV 14Dec 15UV 9
UV index (midday)Level
Jan10Very high
Feb13Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Guastatoya 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 Guastatoya is worst in April — around 55 µg/m³ PM2.5 (unhealthy), about 3.0× the cleanest month (November, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1853 µg/m³Nov 2318 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb20Moderate
Mar25Moderate
Apr55Unhealthy
May39Poor
Jun24Moderate
Jul23Moderate
Aug21Moderate
Sep21Moderate
Oct20Moderate
Nov18Moderate
Dec18Moderate
Location & terrain

Where is Guastatoya?

Guastatoya sits at 14.9°N, 90.1°W, 520 m above sea level, in Guatemala. The nearest listed city is Sanarate, 16 km away.

JalapaPalenciaSalamáSan Pedro AyampucSan Luis JilotepequeChinautlaSan José Pinula

Topography around Guastatoya

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

Within 3 km, the terrain around Guastatoya has large variations in elevation — a maximum elevation change of 682 m around an average of 638 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,805 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,984 m.

The land around Guastatoya is covered by shrubs (70%) within 3 km, shrubs (60%) and trees (24%) within 16 km, and trees (64%) within 80 km.

3 km
682 m
16 km
1,805 m
80 km
2,984 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Sanarate 16 km · Jalapa 26 km · Palencia 37 km · Salamá 38 km · San Pedro Ayampuc 42 km · San Luis Jilotepeque 44 km · Chinautla 49 km · San José Pinula 50 km

Guatemala travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
23.4
per 100k, 2023
Road deaths
22.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 510
Religion
Evangelical 46%Roman Catholic 42%none 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 Guastatoya (14.8544°, -90.0699°, elevation 520 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).