Erlin weather in December

In December, Erlin sees average daytime highs of 20°C and overnight lows near 18°C, with 46 mm of rain across 4.6 wet days and about 10.6 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 19°C by the end. The sky is clear or mostly clear about 62% of the time in December, and the air most often feels humid.

Daylight stretches from about 10 h 36 min at the start of December to 10 h 30 min by month's end. Set against the rest of the year, December is Erlin's 4th-clearest and 1st-windiest month. For the whole year in context, see Erlin's year-round climate.

Daytime high
20°
10th warmest
Overnight low
18°
3rd coldest
Rainfall
46 mm
4.6 wet days
Daylight
10 h 30 min
6:39 AM – 5:11 PM
Cloud cover
36%
4th clearest
Wind
34 km/h
1st windiest
Solar energy
3.42 kWh/m²
Travel score
7.5
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 19°C by the end.

A typical December day in Erlin reaches about 20°C in the afternoon and slips back to 18°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 22°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12220
22120
32120
42119
52119
62119
72119
82119
92119
102019
112019
122019
132018
142018
152018
162018
172018
182018
192018
201918
211918
221918
231917
241917
251917
261917
271917
281917
291917
301917
311917

How December really feels in Erlin

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.

Erlin weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 16°465.510.76.9
Feb18° / 16°697.611.26.5
Mar21° / 18°11010.211.86.7
Apr24° / 22°15910.912.56.8
May26° / 24°27514.113.16.0
Jun28° / 26°36117.613.44.8
Jul29° / 27°2351713.34.6
Aug29° / 26°30919.112.84.5
Sep28° / 26°13010.212.16.3
Oct26° / 24°383.111.48.3
Nov23° / 21°383.310.88.4
Dec20° / 18°464.610.67.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 25%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27624
37624
47525
57426
67426
77426
87327
97327
107327
117327
127228
137327
147327
157327
167426
177426
187426
197525
207525
217525
227624
237624
247624
257723
267723
277723
287723
297723
307822
317822

Chance of precipitation in December

Any precipitation

Erlin gets around 46 mm of rain over 4.6 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 15% and peaks near 15% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
114
214
314
414
514
614
714
814
914
1015
1115
1215
1315
1415
1515
1615
1715
1815
1915
2015
2115
2215
2315
2415
2515
2615
2715
2815
2915
3015
3115

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
182033354
282134333
392235313
492435303
592536282
692537262
7102638252
8102738231
9112739221
10122739211
11122840201
12132840191
13142840181
14142840171
15152840161
16162840151
17172840141
18172940130
19182940120
20193040110
21203039110
22213138100
2321323890
2422323790
2523333780
2623333670
2723343670
2824343660
2924353650
3024353650
3125353640

Wind in December

Winds average 34 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 32 km/h on the calmest days to 34 km/h at its breeziest. It stays fairly steady from day to day.

010203040151015202531
Wind speed (km/h)Feels
133windy
233windy
333windy
433windy
533windy
633windy
734windy
834windy
934windy
1034windy
1134windy
1234windy
1334windy
1434windy
1534windy
1634windy
1734windy
1834windy
1934windy
2034windy
2134windy
2234windy
2333windy
2433windy
2533windy
2633windy
2733windy
2833windy
2933windy
3032windy
3132windy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 36 min at the start of December to 10 h 30 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 6:29 AM to 6:45 AM, and sunset from 5:07 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.66:295:07
210.66:305:07
310.66:315:07
410.66:315:08
510.66:325:08
610.66:335:08
710.66:335:08
810.66:345:08
910.66:355:08
1010.66:355:09
1110.66:365:09
1210.56:365:09
1310.56:375:10
1410.56:385:10
1510.56:385:10
1610.56:395:11
1710.56:395:11
1810.56:405:11
1910.56:405:12
2010.56:415:12
2110.56:415:13
2210.56:425:13
2310.56:425:14
2410.56:435:14
2510.56:435:15
2610.56:445:15
2710.56:445:16
2810.56:445:16
2910.56:455:17
3010.56:455:17
3110.56:455:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.42 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.42 kWh/m² to a high of 5.71 kWh/m² in July across the year — December's 3.42 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.4Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.6Moderate
Planning a trip in December

Hazard calendar for Erlin

In seasonPeak

In December, Erlin sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Erlin sits in the Pacific typhoon belt; the season peaks July–October.

Erlin's monsoon runs May–August, when most of the year's rain falls.

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

Is December a good time to visit Erlin?

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

7.5
Sightseeing
3rd-best month of the year
3.9
Beach & pool
9th-best month of the year

December is one of the better times to visit Erlin for general sightseeing.

What to pack for Erlin in December

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

In December, Erlin sees daytime highs around 20°C and nights near 18°C. Pack a windbreaker. About 5 days see rain.

a windbreaker

Sea temperature near Erlin in December

The nearest coast averages about 22°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 25 km away) is warmest in August at about 29°C and coldest in January near 21°C.

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

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar22Refreshing
Apr24Warm
May26Warm
Jun28Warm
Jul29Tropical
Aug29Tropical
Sep28Warm
Oct26Warm
Nov25Warm
Dec22Refreshing

UV index in Erlin in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Erlin peaks around June 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJun 18UV 12Dec 20UV 5
UV index (midday)Level
Jan6High
Feb8Very high
Mar9Very high
Apr8Very high
May10Very high
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7Very high
Nov7High
Dec5High

Air quality in Erlin 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 Erlin is worst in March — around 38 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (July, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 2038 µg/m³Jul 2321 µg/m³
PM2.5 (µg/m³)Level
Jan30Moderate
Feb34Moderate
Mar38Poor
Apr37Poor
May31Moderate
Jun25Moderate
Jul21Moderate
Aug22Moderate
Sep26Moderate
Oct26Moderate
Nov26Moderate
Dec26Moderate
Location & terrain

Where is Erlin?

Erlin sits at 23.9°N, 120.4°E, 19 m above sea level, in Taiwan. The nearest listed city is Pitou, 11 km away.

Topography around Erlin

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

Within 3 km, the terrain around Erlin has only modest variations in elevation — a maximum elevation change of 18 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 51 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,887 m.

The land around Erlin is covered by cropland (62%) and artificial surfaces (23%) within 3 km, cropland (42%) and water (28%) within 16 km, and trees (39%) and water (39%) within 80 km.

3 km
18 m
16 km
51 m
80 km
3,887 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Pitou 11 km · Xihu 13 km · Xiluo 15 km · Erlun 15 km · Tianwei 16 km · Beidou 16 km · Yongjing 18 km · Citong 21 km

Taiwan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
110 / 220 V · 60 Hz
Happiness
6.7 / 10
World Happiness, 2025
Religion
Buddhist 35%Taoist 33%none or unspecified 18%folk religion approximately 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 Erlin (23.9005°, 120.3689°, elevation 19 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).