Arraiján weather in December

In December, Arraiján sees average daytime highs of 29°C and overnight lows near 25°C, with 124 mm of rain across 20.5 wet days and about 11.5 hours of daylight. It is the 10th-warmest and 8th-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 26% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 30 min at the start of December to 11 h 30 min by month's end. Set against the rest of the year, December is Arraiján's 4th-clearest and 4th-windiest month. For the whole year in context, see Arraiján's year-round climate.

Daytime high
29°
10th warmest
Overnight low
25°
6th coldest
Rainfall
124 mm
20.5 wet days
Daylight
11 h 30 min
6:30 AM – 5:59 PM
Cloud cover
62%
4th clearest
Wind
13 km/h
4th windiest
Solar energy
4.36 kWh/m²
Travel score
4.3
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 Arraiján reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°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 on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925
312925

How December really feels in Arraiján

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Arraiján weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°298.411.55.8
Feb29° / 24°144.611.76.1
Mar30° / 25°185.411.95.8
Apr30° / 25°8715.612.24.3
May29° / 25°23428.912.42.9
Jun29° / 25°25529.212.52.7
Jul29° / 25°28030.212.52.7
Aug29° / 25°27630.612.32.7
Sep29° / 25°26929.612.12.7
Oct29° / 24°2683011.82.9
Nov29° / 24°25227.611.63.2
Dec29° / 25°12420.511.54.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% 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 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23268
33268
43367
53367
63466
73565
83664
93664
103763
114060
124159
134258
144357
154753
164852
175050
185248
195446
205644
215842
225941
236040
246238
256337
266337
276337
286535
296535
306535
316535

Chance of precipitation in December

Any precipitation

Arraiján gets around 124 mm of rain over 20.5 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 66% and peaks near 83% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
183
282
381
481
580
679
778
877
976
1075
1174
1273
1371
1470
1568
1666
1765
1863
1962
2060
2159
2257
2356
2455
2554
2652
2751
2850
2949
3048
3147

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 74% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
106535
206535
306535
406634
506634
606733
706832
816831
916831
1016930
1117029
1217128
1317227
1417326
1517425
1617425
1717524
1817623
1917722
2017821
2117821
2217920
2317920
2417920
2518019
2618019
2718019
2818118
2918118
3018217
3118316

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
111calm
211calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 30 min at the start of December to 11 h 30 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 6:23 AM to 6:37 AM, and sunset from 5:54 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:235:54
211.56:235:54
311.56:245:54
411.56:245:55
511.56:255:55
611.56:255:55
711.56:265:56
811.56:265:56
911.56:275:56
1011.56:275:57
1111.56:285:57
1211.56:285:58
1311.56:295:58
1411.56:295:58
1511.56:305:59
1611.56:305:59
1711.56:316:00
1811.56:316:00
1911.56:326:01
2011.56:326:01
2111.56:336:01
2211.56:336:02
2311.56:346:02
2411.56:346:03
2511.56:356:03
2611.56:356:04
2711.56:356:04
2811.56:366:05
2911.56:366:05
3011.56:376:06
3111.56:376:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.36 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 5.81 kWh/m² in March across the year — December's 4.36 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in December

Hazard calendar for Arraiján

In seasonPeak

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

Arraiján's rainy season runs May–November, when most of the year's rain falls.

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

Is December a good time to visit Arraiján?

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

4.3
Sightseeing
4th-best month of the year
5.4
Beach & pool
5th-best month of the year

December is a reasonable time to visit Arraiján for sightseeing.

What to pack for Arraiján in December

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

In December, Arraiján sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. About 21 days see rain.

light clothesrain gear

Sea temperature near Arraiján in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in June at about 29°C and coldest in March near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb25Warm
Mar25Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov28Tropical
Dec28Warm

UV index in Arraiján in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeJun 10UV 13Dec 15UV 10
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr12Extreme
May13Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Very high

Air quality in Arraiján 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 Arraiján is worst in July — around 28 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1627 µg/m³Nov 1014 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar21Moderate
Apr26Moderate
May25Moderate
Jun23Moderate
Jul28Moderate
Aug21Moderate
Sep17Moderate
Oct14Moderate
Nov14Moderate
Dec17Moderate
Location & terrain

Where is Arraiján?

Arraiján sits at 8.9°N, 79.6°W, 123 m above sea level, in Panama. The nearest listed city is Veracruz, 6.0 km away.

Topography around Arraiján

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

Within 3 km, the terrain around Arraiján has significant variations in elevation — a maximum elevation change of 440 m around an average of 141 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 516 m; within 80 km, large variations in elevation — a maximum elevation change of 1,168 m.

The land around Arraiján is covered by trees (74%) within 3 km, trees (45%) and water (33%) within 16 km, and water (47%) and trees (40%) within 80 km.

3 km
440 m
16 km
516 m
80 km
1,168 m
treesgrasslandartificial surfacesbare terrainwatermangroves
December weather nearby: Veracruz 6.0 km · Balboa 8.0 km · Ancón 10 km · El Chorrillo 10 km · Curundú 11 km · Panama City 15 km · La Chorrera 17 km · Río Abajo 19 km

Panama travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
110 V · 60 Hz
Prices
≈ 45% of US
price level, 2025
GDP per capita
$19,790
2025
Happiness
6.5 / 10
World Happiness, 2025
Homicide rate
11.7
per 100k, 2023
Road deaths
13.9
per 100k/yr, 2019
Income group
High
World Bank
English
Low
EF EPI 491
Religion
Evangelical 55%Roman Catholic 33%none 10%

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 Arraiján (8.9398°, -79.6404°, elevation 123 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).