Lamphun weather in December

In December, Lamphun sees average daytime highs of 29°C and overnight lows near 17°C, with 11 mm of rain across 1.7 wet days and about 10.9 hours of daylight. It is the 12th-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 62% of the time in December, and the air most often feels humid.

Daylight stretches from about 11 hours at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is Lamphun's 4th-clearest and 8th-windiest month. For the whole year in context, see Lamphun's year-round climate.

Daytime high
29°
12th warmest
Overnight low
17°
2nd coldest
Rainfall
11 mm
1.7 wet days
Daylight
10 h 54 min
6:53 AM – 5:47 PM
Cloud cover
34%
4th clearest
Wind
4 km/h
8th windiest
Solar energy
4.3 kWh/m²
Travel score
7.0
out of 10

Lamphun is town in Lamphun province, Thailand.

Air quality
Very high
PM2.5 36 µg/m³ · 2019

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 29°C through the month.

A typical December day in Lamphun reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, December runs about 2°C cooler than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13018
23018
32918
42918
52918
62918
72918
82918
92918
102917
112917
122917
132917
142917
152917
162917
172917
182916
192916
202916
212916
222916
232916
242916
252916
262916
272916
282916
292916
302916
312916

How December really feels in Lamphun

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.

Lamphun 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
Jan30° / 16°81.6116.5
Feb33° / 17°40.911.44.7
Mar35° / 20°172.611.92.9
Apr37° / 24°457.112.41.8
May35° / 25°13015.512.92.2
Jun33° / 25°12818.113.12.4
Jul33° / 25°15420.4132.6
Aug32° / 25°21423.412.62.7
Sep32° / 24°22622.912.12.7
Oct31° / 23°13117.711.63.7
Nov30° / 20°295.411.15.6
Dec29° / 17°111.710.97.0

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 17% of December, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27426
37426
47525
57525
67525
77525
87624
97624
107624
117723
127723
137822
147921
158020
168020
178119
188218
198317
208317
218317
228317
238317
248317
258218
268218
278218
288119
298119
308020
318020

Chance of precipitation in December

Any precipitation

Lamphun gets around 11 mm of rain over 1.7 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 6% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
310
410
59
69
78
88
97
107
117
126
135
145
154
164
174
184
193
203
213
223
233
243
254
264
274
284
294
305
315

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
139264518
239274417
3310274317
4410284216
5411294016
6412304015
7412313914
8413323813
9414333712
10415343711
1141635369
1241735358
1351835357
1451935346
1562135335
1672235324
1772435313
1882535303
1992634292
2092734282
21102834271
22102934251
23103034241
24103134231
25103234231
26103234221
27103334221
28103334211
2993334221
3083435222
3183435222

Wind in December

Winds average 4 km/h in December.

Across December, daily wind ranges from about 3 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
303calm
313calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 hours at the start of December to 10 h 54 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 6:45 AM to 7:00 AM, and sunset from 5:43 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:455:43
211.06:455:43
310.96:465:43
410.96:475:43
510.96:475:43
610.96:485:44
710.96:485:44
810.96:495:44
910.96:505:44
1010.96:505:45
1110.96:515:45
1210.96:515:45
1310.96:525:46
1410.96:525:46
1510.96:535:46
1610.96:535:47
1710.96:545:47
1810.96:545:48
1910.96:555:48
2010.96:555:48
2110.96:565:49
2210.96:565:49
2310.96:575:50
2410.96:575:50
2510.96:585:51
2610.96:585:51
2710.96:595:52
2810.96:595:52
2910.96:595:53
3010.97:005:54
3110.97:005:54

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.3 kWh/m².

For context, solar energy here swings from a low near 4 kWh/m² to a high of 6.29 kWh/m² in March across the year — December's 4.3 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in December

Hazard calendar for Lamphun

In seasonPeak

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

Lamphun'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 Lamphun?

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

7.0
Sightseeing
1st-best month of the year
8.7
Beach & pool
2nd-best month of the year

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

What to pack for Lamphun in December

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

In December, Lamphun sees daytime highs around 29°C and nights near 17°C. Pack light clothes.

light clothes

UV index in Lamphun in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lamphun peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 14UV 13Dec 21UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar9Very high
Apr10Very high
May11Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7Very high

Air quality in Lamphun 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 Lamphun is worst in March — around 75 µg/m³ PM2.5 (unhealthy), about 4.3× the cleanest month (July, 18 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Lamphun's WHO annual average of 36 µg/m³.

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyModerateMar 2073 µg/m³Jul 1218 µg/m³
PM2.5 (µg/m³)Level
Jan40Poor
Feb50Poor
Mar75Unhealthy
Apr66Unhealthy
May30Moderate
Jun18Moderate
Jul18Moderate
Aug19Moderate
Sep23Moderate
Oct28Moderate
Nov31Moderate
Dec35Moderate
Location & terrain

Where is Lamphun?

Lamphun sits at 18.6°N, 99.0°E, 296 m above sea level, in Thailand. The nearest listed city is Pa Sang, 9.0 km away.

PaiThoen

Topography around Lamphun

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

Within 3 km, the terrain around Lamphun has only modest variations in elevation — a maximum elevation change of 14 m around an average of 292 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 406 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,502 m.

The land around Lamphun is covered by cropland (36%), trees (29%) and artificial surfaces (27%) within 3 km, trees (51%) and cropland (29%) within 16 km, and trees (82%) within 80 km.

3 km
14 m
16 km
406 m
80 km
2,502 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Pa Sang 9.0 km · San Pa Tong 13 km · Hang Dong 15 km · San Kamphaeng 22 km · Chiang Mai 23 km · Lampang 60 km · Pai 105 km · Thoen 110 km

Thailand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$8,057
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
4.8
per 100k, 2011
Road deaths
32.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 402
Religion
Buddhist 93%Muslim 5%Christian 1%other 1%

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 Lamphun (18.5805°, 99.0075°, elevation 296 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).