Phak Hai weather in January

In January, Phak Hai sees average daytime highs of 33°C and overnight lows near 22°C, with 13 mm of rain across 2.8 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 53% of the time in January, and the air most often feels humid.

Daylight stretches from about 11 h 12 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is Phak Hai's 2nd-clearest and 10th-windiest month. For the whole year in context, see Phak Hai's year-round climate.

Daytime high
33°
9th warmest
Overnight low
22°
1st coldest
Rainfall
13 mm
2.8 wet days
Daylight
11 h 12 min
6:51 AM – 6:05 PM
Cloud cover
42%
2nd clearest
Wind
8 km/h
10th windiest
Solar energy
4.97 kWh/m²
Travel score
4.2
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical January day in Phak Hai reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, January runs on par with December and about 2°C cooler than February.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13222
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123322
133322
143322
153322
163322
173322
183322
193322
203322
213322
223322
233322
243322
253322
263322
273322
283322
293422
303422
313422

How January really feels in Phak Hai

Once humidity and wind are folded in, January 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 January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Phak Hai weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 11th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
27030
37030
46931
56931
66931
76931
86931
96832
106832
116832
126931
136931
146931
157030
167129
177129
187228
197228
207426
217426
227525
237525
247723
257723
267822
277822
288020
298020
308119
318119

Chance of precipitation in January

Any precipitation

Phak Hai gets around 13 mm of rain over 2.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
27
37
48
58
68
79
89
99
109
119
129
139
149
159
169
179
189
199
209
219
229
239
249
259
269
279
289
299
309
319

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19182928151
28183027151
38173027161
47173027171
57163127182
67163126192
76153026202
86153026222
96143026232
106133025232
116133025242
126123025252
136123025252
146113025262
156112925262
166102925273
176102926273
186102826273
196102726283
206102727283
216102627283
225112527283
235112527293
245112427293
256112327303
266112227303
276122127313
286122026324
296131925334
307131925334
317131824344

Wind in January

Winds average 8 km/h in January.

Across January, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 12 min at the start of January to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:47 AM to 6:51 AM, and sunset from 5:56 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:475:56
211.26:475:57
311.26:485:58
411.26:485:58
511.26:485:59
611.26:495:59
711.26:496:00
811.26:496:00
911.26:496:01
1011.26:506:01
1111.26:506:02
1211.26:506:03
1311.26:506:03
1411.26:516:04
1511.26:516:04
1611.26:516:05
1711.26:516:05
1811.26:516:06
1911.36:516:06
2011.36:516:07
2111.36:516:07
2211.36:516:08
2311.36:526:09
2411.36:526:09
2511.36:526:10
2611.36:526:10
2711.36:516:11
2811.36:516:11
2911.36:516:12
3011.36:516:12
3111.46:516:13

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.97 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 — January's 4.97 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in January

Hazard calendar for Phak Hai

In seasonPeak

None of Phak Hai's seasonal hazards are active in January. 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 January a good time to visit Phak Hai?

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

4.2
Sightseeing
2nd-best month of the year
7.5
Beach & pool
2nd-best month of the year

January 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 January

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

In January, Phak Hai sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Phak Hai in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 9 (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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).