San Francisco Zapotitlán weather in December

In December, San Francisco Zapotitlán sees average daytime highs of 29°C and overnight lows near 20°C, with 41 mm of rain across 10 wet days and about 11.2 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 72% of the time in December, and the air most often feels muggy.

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 San Francisco Zapotitlán's 3rd-clearest and 4th-windiest month. For the whole year in context, see San Francisco Zapotitlán's year-round climate.

Daytime high
29°
8th warmest
Overnight low
20°
2nd coldest
Rainfall
41 mm
10 wet days
Daylight
11 h 06 min
6:28 AM – 5:36 PM
Cloud cover
31%
3rd clearest
Wind
5 km/h
4th windiest
Solar energy
4.97 kWh/m²
Travel score
5.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in San Francisco Zapotitlán reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12921
22921
32921
42921
52921
62921
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

How December really feels in San Francisco Zapotitlán

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 Francisco Zapotitlán weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°22611.26.0
Feb31° / 20°175.211.55.4
Mar31° / 21°5310.911.94.5
Apr31° / 22°13317.912.33.6
May30° / 22°43828.512.72.9
Jun29° / 22°4332912.82.9
Jul29° / 22°36630.112.82.9
Aug29° / 22°45230.612.52.9
Sep29° / 22°54229.512.12.9
Oct28° / 22°54129.811.73.1
Nov29° / 21°2072211.34.2
Dec29° / 20°411011.25.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 72% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28416
38416
48614
58614
68713
78713
88713
98812
108812
118812
128812
138812
148812
158812
168911
178911
188911
198911
208911
218911
228911
238911
248911
259010
269010
279010
289010
299010
309010
319010

Chance of precipitation in December

Any precipitation

San Francisco Zapotitlán gets around 41 mm of rain over 10 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 33% and peaks near 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
150
248
346
444
542
640
738
837
935
1034
1133
1232
1331
1431
1531
1630
1730
1830
1930
2029
2129
2229
2328
2428
2527
2627
2726
2826
2926
3025
3125

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10196129
201106227
301116226
401126324
501136323
601146421
701156420
801166419
901176418
1001186516
1101196515
1201196515
1301206514
1401216513
1501226512
1601226611
1701236511
1802246410
190224659
200225649
210326638
220326647
230427636
240428635
250429625
260529624
270530623
280531613
290631612
300632602
311632592

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:20 AM to 6:35 AM, and sunset from 5:32 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:205:32
211.26:205:32
311.26:215:32
411.26:225:32
511.26:225:33
611.26:235:33
711.26:235:33
811.26:245:34
911.26:245:34
1011.26:255:34
1111.26:255:35
1211.26:265:35
1311.16:265:35
1411.16:275:36
1511.16:275:36
1611.16:285:36
1711.16:295:37
1811.16:295:37
1911.16:305:38
2011.16:305:38
2111.16:305:39
2211.16:315:39
2311.16:315:40
2411.16:325:40
2511.16:325:41
2611.16:335:41
2711.16:335:42
2811.16:345:42
2911.16:345:43
3011.16:345:43
3111.16:355:44

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.97 kWh/m².

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 6.16 kWh/m² in April across the year — December's 4.97 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in December

Hazard calendar for San Francisco Zapotitlán

In seasonPeak

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

San Francisco Zapotitlán sits in the Atlantic hurricane belt; the season peaks August–October.

San Francisco Zapotitlán's rainy season runs May–October, when most of the year's rain falls.

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

Is December a good time to visit San Francisco Zapotitlán?

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

5.9
Sightseeing
2nd-best month of the year
7.5
Beach & pool
3rd-best month of the year

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

What to pack for San Francisco Zapotitlán in December

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

In December, San Francisco Zapotitlán sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near San Francisco Zapotitlán in December

The nearest coast averages about 29°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 53 km away) is warmest in July at about 30°C and coldest in February near 29°C.

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

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in San Francisco Zapotitlán 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 Francisco Zapotitlán peaks around March 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 highMar 21UV 12Dec 14UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in San Francisco Zapotitlán 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 Francisco Zapotitlán is worst in December — around 45 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (June, 28 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 2145 µg/m³Jun 2228 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb45Poor
Mar41Poor
Apr44Poor
May40Poor
Jun28Moderate
Jul29Moderate
Aug29Moderate
Sep29Moderate
Oct30Moderate
Nov37Poor
Dec45Poor
Location & terrain

Where is San Francisco Zapotitlán?

San Francisco Zapotitlán sits at 14.6°N, 91.5°W, 635 m above sea level, in Guatemala. The nearest listed city is Mazatenango, 6.0 km away.

Topography around San Francisco Zapotitlán

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

Within 3 km, the terrain around San Francisco Zapotitlán has significant variations in elevation — a maximum elevation change of 348 m around an average of 635 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,376 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,178 m.

The land around San Francisco Zapotitlán is covered by trees (77%) within 3 km, trees (80%) within 16 km, and trees (57%) within 80 km.

3 km
348 m
16 km
3,376 m
80 km
4,178 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Mazatenango 6.0 km · San Pablo Jocopilas 7.0 km · San Felipe 9.0 km · El Palmar 9.0 km · San Sebastián 14 km · Retalhuleu 18 km · Nuevo San Carlos 19 km · Chicacao 22 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 San Francisco Zapotitlán (14.5894°, -91.5214°, elevation 635 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).