Chumphon weather in January

In January, Chumphon sees average daytime highs of 27°C and overnight lows near 25°C, with 68 mm of rain across 8.5 wet days and about 11.5 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 44% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 24 min at the start of January to 11 h 30 min by month's end. Set against the rest of the year, January is Chumphon's 3rd-clearest and 7th-windiest month. For the whole year in context, see Chumphon's year-round climate.

Daytime high
27°
12th warmest
Overnight low
25°
1st coldest
Rainfall
68 mm
8.5 wet days
Daylight
11 h 24 min
6:49 AM – 6:16 PM
Cloud cover
49%
3rd clearest
Wind
15 km/h
7th windiest
Solar energy
5.04 kWh/m²
Travel score
6.9
out of 10

Chumphon is town in Chumphon province, Thailand.

Density
2,646/km²
people per km²

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 27°C through the month.

A typical January day in Chumphon reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725
312725

How January really feels in Chumphon

Once humidity and wind are folded in, January 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

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Chumphon weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°688.511.56.9
Feb28° / 25°326.511.77.0
Mar29° / 26°849.711.95.9
Apr30° / 27°8713.212.24.8
May30° / 27°12421.712.53.7
Jun29° / 26°11220.312.63.8
Jul29° / 26°12021.312.63.9
Aug29° / 26°12921.812.33.9
Sep28° / 26°16023.812.13.7
Oct28° / 25°24325.111.84.1
Nov28° / 26°19817.211.55.2
Dec27° / 25°948.811.46.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 19% of January, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
26040
36040
46139
56139
66238
76139
86238
96337
106238
116337
126337
136337
146238
156337
166337
176337
186337
196337
206337
216337
226436
236436
246535
256535
266535
276634
286733
296832
306931
316931

Chance of precipitation in January

Any precipitation

Chumphon gets around 68 mm of rain over 8.5 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
123
223
324
424
525
625
725
826
926
1026
1126
1226
1326
1426
1526
1627
1727
1827
1927
2028
2128
2228
2329
2429
2529
2629
2729
2829
2929
3028
3128

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1525664
2524674
3524674
4423694
5422704
6421714
7421714
8420724
9420724
10419734
11419734
12418744
13418744
14417754
15417763
16417763
17417763
18417763
19316792
20316792
21316792
22316792
23316792
24315802
25315802
26315802
27315802
28314812
29314812
30315802
31315802

Wind in January

Winds average 15 km/h in January.

Across January, daily wind ranges from about 14 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 24 min at the start of January to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:45 AM to 6:50 AM, and sunset from 6:08 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:456:08
211.46:456:09
311.46:456:09
411.46:466:10
511.46:466:10
611.46:466:11
711.46:476:11
811.46:476:12
911.46:476:12
1011.46:486:13
1111.46:486:13
1211.46:486:14
1311.46:486:14
1411.46:496:15
1511.46:496:16
1611.46:496:16
1711.56:496:16
1811.56:506:17
1911.56:506:17
2011.56:506:18
2111.56:506:18
2211.56:506:19
2311.56:506:19
2411.56:506:20
2511.56:506:20
2611.56:506:21
2711.56:506:21
2811.56:516:22
2911.56:516:22
3011.56:516:22
3111.56:506:23

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.04 kWh/m².

For context, solar energy here swings from a low near 4.15 kWh/m² to a high of 6.01 kWh/m² in March across the year — January's 5.04 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.4Bright
Planning a trip in January

Hazard calendar for Chumphon

In seasonPeak

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

Chumphon sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Chumphon's rainy season runs May–November, when most of the year's rain falls.

Cyclone
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Chumphon?

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

6.9
Sightseeing
2nd-best month of the year
7.1
Beach & pool
3rd-best month of the year

January is a reasonable time to visit Chumphon for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chumphon in January

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

In January, Chumphon sees daytime highs around 27°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Chumphon in January

The nearest coast averages about 28°C in January — 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 May at about 30°C and coldest in January near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Chumphon 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 Chumphon peaks around August 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 20UV 14Jan 1UV 9
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Chumphon 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 Chumphon is worst in March — around 21 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (September, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1421 µg/m³Sep 1412 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb20Moderate
Mar21Moderate
Apr20Moderate
May15Moderate
Jun13Moderate
Jul14Moderate
Aug12Good
Sep12Good
Oct12Good
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Chumphon?

Chumphon sits at 10.5°N, 99.2°E, 8 m above sea level, in Thailand. The nearest listed city is Lang Suan, 62 km away.

Ko Pha-nganKo SamuiSurat Thani

Topography around Chumphon

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

Within 3 km, the terrain around Chumphon has only modest variations in elevation — a maximum elevation change of 34 m around an average of 7 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 306 m; within 80 km, large variations in elevation — a maximum elevation change of 1,039 m.

The land around Chumphon is covered by trees (64%) and artificial surfaces (23%) within 3 km, trees (68%) and water (20%) within 16 km, and trees (54%) and water (43%) within 80 km.

3 km
34 m
16 km
306 m
80 km
1,039 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Lang Suan 62 km · Ranong 84 km · Ko Tao 85 km · Bang Saphan 88 km · Kawthaung 89 km · Ko Pha-ngan 124 km · Ko Samui 135 km · Surat Thani 152 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 Chumphon (10.4957°, 99.1797°, elevation 8 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).