Seka weather in December

In December, Seka sees average daytime highs of 29°C and overnight lows near 17°C, with 6 mm of rain across 1.1 wet days and about 10.9 hours of daylight. It is the 11th-warmest and 12th-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 67% 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 Seka's 2nd-clearest and 1st-windiest month. For the whole year in context, see Seka's year-round climate.

Daytime high
29°
11th warmest
Overnight low
17°
2nd coldest
Rainfall
6 mm
1.1 wet days
Daylight
10 h 54 min
6:32 AM – 5:28 PM
Cloud cover
31%
2nd clearest
Wind
8 km/h
1st windiest
Solar energy
4.59 kWh/m²
Travel score
7.3
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 Seka 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 25°C and 32°C. Set against its neighbours, December runs about 2°C cooler than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13019
23018
33018
42918
52918
62918
72918
82918
92917
102917
112917
122917
132917
142917
152817
162817
172816
182816
192816
202816
212816
222816
232816
242816
252816
262816
272816
282816
292816
302816
312816

How December really feels in Seka

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.

Seka weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 16°81.6117.3
Feb30° / 18°162.511.46.2
Mar32° / 21°396.111.94.5
Apr33° / 24°6911.812.43.2
May32° / 25°27924.612.82.5
Jun31° / 25°4052813.12.3
Jul31° / 25°51129.5132.5
Aug30° / 25°49930.112.62.5
Sep31° / 25°31324.212.12.9
Oct31° / 23°8610.511.64.3
Nov31° / 20°162.411.25.7
Dec29° / 17°61.110.97.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% 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 17%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48119
58119
68119
78119
88119
98020
108020
118119
128218
138218
148218
158317
168416
178416
188515
198515
208614
218614
228614
238713
248614
258614
268614
278614
288515
298416
308416
318218

Chance of precipitation in December

Any precipitation

Seka gets around 6 mm of rain over 1.1 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 4% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
113
123
133
143
153
163
173
183
193
203
213
223
233
244
254
264
274
284
294
304
314

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 21% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1142031278
2142131267
3152232256
4162332246
5162432235
6172531225
7182631214
8182731204
9192831193
10202830193
11212829183
12232928182
13242928182
14252927182
15262926182
16272825182
17282825182
18282824182
19292824182
20292824171
21302724171
22302725171
23302725161
24302726161
25302727151
26292728151
27292729141
28282730141
29272831141
30262832141
31252833141

Wind in December

Winds average 8 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 6:24 AM to 6:39 AM, and sunset from 5:24 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:245:24
211.06:245:24
311.06:255:24
411.06:265:25
511.06:265:25
611.06:275:25
711.06:275:25
811.06:285:26
911.06:295:26
1011.06:295:26
1110.96:305:26
1210.96:305:27
1310.96:315:27
1410.96:315:28
1510.96:325:28
1610.96:325:28
1710.96:335:29
1810.96:335:29
1910.96:345:30
2010.96:345:30
2110.96:355:30
2210.96:355:31
2310.96:365:31
2410.96:365:32
2510.96:375:32
2610.96:375:33
2710.96:385:33
2810.96:385:34
2910.96:385:34
3010.96:395:35
3110.96:395:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.59 kWh/m².

For context, solar energy here swings from a low near 3.87 kWh/m² to a high of 5.99 kWh/m² in April across the year — December's 4.59 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in December

Hazard calendar for Seka

In seasonPeak

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

Seka's monsoon runs May–September, 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 Seka?

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

7.3
Sightseeing
1st-best month of the year
8.8
Beach & pool
1st-best month of the year

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

What to pack for Seka in December

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

In December, Seka sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Seka 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 Seka peaks around July 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highJul 17UV 13Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar11Extreme
Apr10Very high
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in Seka 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 Seka is worst in April — around 86 µg/m³ PM2.5 (unhealthy), about 5.7× the cleanest month (September, 15 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateApr 1085 µg/m³Sep 1615 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb38Poor
Mar80Unhealthy
Apr86Unhealthy
May24Moderate
Jun17Moderate
Jul17Moderate
Aug17Moderate
Sep15Moderate
Oct17Moderate
Nov16Moderate
Dec19Moderate
Location & terrain

Where is Seka?

Seka sits at 17.9°N, 104.0°E, 158 m above sea level, in Thailand. The nearest listed city is Pakxan, 60 km away.

Nakhon Phanom

Topography around Seka

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

Within 3 km, the terrain around Seka has only modest variations in elevation — a maximum elevation change of 36 m around an average of 155 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 409 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,360 m.

The land around Seka is covered by trees (52%) and cropland (31%) within 3 km, trees (53%) and cropland (36%) within 16 km, and trees (60%) and cropland (34%) within 80 km.

3 km
36 m
16 km
409 m
80 km
1,360 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Pakxan 60 km · Sawang Daen Din 73 km · Borikhan 75 km · Ban Dung 78 km · Warichaphum 78 km · Phon Charoen 84 km · Sakon Nakhon 88 km · Nakhon Phanom 105 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 Seka (17.9285°, 103.9552°, elevation 158 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).