Phak Hai weather in December

In December, Phak Hai sees average daytime highs of 32°C and overnight lows near 22°C, with 10 mm of rain across 1.7 wet days and about 11.2 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 44% 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 12 min by month's end. Set against the rest of the year, December is Phak Hai's 4th-clearest and 2nd-windiest month. For the whole year in context, see Phak Hai's year-round climate.

Daytime high
32°
12th warmest
Overnight low
22°
2nd coldest
Rainfall
10 mm
1.7 wet days
Daylight
11 h 06 min
6:40 AM – 5:49 PM
Cloud cover
48%
4th clearest
Wind
11 km/h
2nd windiest
Solar energy
4.73 kWh/m²
Travel score
4.6
out of 10

Phak Hai is town in Phak Hai district, Phra Nakhon Si Ayutthaya province, Thailand.

Founded
1956

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 32°C through the month.

A typical December day in Phak Hai reaches about 32°C in the afternoon and slips back to 22°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13324
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123223
133223
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253222
263222
273222
283222
293222
303222
313222

How December really feels in Phak Hai

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.

Phak Hai weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°132.811.24.2
Feb35° / 24°143.211.53.2
Mar36° / 26°437.511.92.1
Apr37° / 27°8413.712.31.3
May36° / 27°15421.112.71.4
Jun35° / 27°12921.612.81.6
Jul34° / 27°13422.612.81.9
Aug34° / 26°15722.912.51.9
Sep33° / 26°25325.212.12.0
Oct33° / 25°16819.311.72.8
Nov33° / 24°355.911.33.8
Dec32° / 22°101.711.24.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25941
35941
45941
55941
65941
75941
85941
96040
106139
116139
126139
136337
146337
156436
166634
176733
186733
196832
206931
216931
227030
237129
247129
257129
267129
277129
287129
297129
307129
317030

Chance of precipitation in December

Any precipitation

Phak Hai gets around 10 mm of rain over 1.7 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 6% and peaks near 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
110
29
39
48
58
68
77
87
97
106
116
126
135
145
155
164
174
184
194
204
214
224
234
244
254
264
274
284
295
305
316

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1391938239
2392038238
3392137228
43102237217
53102337217
63102436206
73112535196
83112735195
94122834185
104122934184
114132933174
125142932173
135142932173
146152931162
156162931162
167162930152
178172830152
189172829152
199182828151
2010182828151
2111192728141
2211192727141
2312202727131
2412202727131
2512202727131
2612202827121
2712202827121
2812202828121
2911192828131
3010192928131
3110192928141

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 12 min at the start of December to 11 h 12 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 6:32 AM to 6:47 AM, and sunset from 5:44 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:325:44
211.26:335:45
311.26:335:45
411.26:345:45
511.26:345:45
611.26:355:46
711.26:355:46
811.26:365:46
911.26:365:47
1011.26:375:47
1111.26:385:47
1211.26:385:48
1311.26:395:48
1411.26:395:48
1511.26:405:49
1611.16:405:49
1711.16:415:50
1811.16:415:50
1911.16:425:50
2011.16:425:51
2111.16:435:51
2211.16:435:52
2311.16:445:52
2411.16:445:53
2511.16:455:53
2611.16:455:54
2711.16:455:54
2811.16:465:55
2911.26:465:55
3011.26:475:56
3111.26:475:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.73 kWh/m².

For context, solar energy here swings from a low near 4.58 kWh/m² to a high of 6.23 kWh/m² in April across the year — December's 4.73 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Hazard calendar for Phak Hai

In seasonPeak

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

Phak Hai's rainy season runs May–October, 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 Phak Hai?

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

4.6
Sightseeing
1st-best month of the year
7.6
Beach & pool
1st-best month of the year

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

What to pack for Phak Hai in December

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

In December, Phak Hai sees daytime highs around 32°C and nights near 22°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Phak Hai in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Phak Hai peaks around August 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 highAug 15UV 13Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar12Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec8Very high

Air quality in Phak Hai 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 Phak Hai is worst in January — around 83 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (July, 43 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 2382 µg/m³Jul 2443 µg/m³
PM2.5 (µg/m³)Level
Jan83Unhealthy
Feb81Unhealthy
Mar70Unhealthy
Apr64Unhealthy
May54Poor
Jun44Poor
Jul43Poor
Aug43Poor
Sep54Poor
Oct66Unhealthy
Nov67Unhealthy
Dec66Unhealthy
Location & terrain

Where is Phak Hai?

Phak Hai sits at 14.5°N, 100.4°E, 11 m above sea level, in Thailand. The nearest listed city is Bang Ban, 15 km away.

Topography around Phak Hai

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

Within 3 km, the terrain around Phak Hai has only modest variations in elevation — a maximum elevation change of 11 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 27 m; within 80 km, large variations in elevation — a maximum elevation change of 642 m.

The land around Phak Hai is covered by cropland (70%) within 3 km, cropland (69%) within 16 km, and cropland (66%) within 80 km.

3 km
11 m
16 km
27 m
80 km
642 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Bang Ban 15 km · Wiset Chaichan 16 km · Ayutthaya 25 km · Nakhon Luang 26 km · Suphan Buri 27 km · Bang Pa-in 34 km · Tha Ruea 40 km · Ban Mo 42 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 Phak Hai (14.4568°, 100.37°, elevation 11 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).