Ko Lanta weather in August

In August, Ko Lanta sees average daytime highs of 28°C and overnight lows near 27°C, with 270 mm of rain across 22.6 wet days and about 12.2 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 6% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of August to 12 h 12 min by month's end. Set against the rest of the year, August is Ko Lanta's 10th-clearest and 3rd-windiest month. For the whole year in context, see Ko Lanta's year-round climate.

Daytime high
28°
8th warmest
Overnight low
27°
7th coldest
Rainfall
270 mm
22.6 wet days
Daylight
12 h 12 min
6:20 AM – 6:35 PM
Cloud cover
83%
10th clearest
Wind
18 km/h
3rd windiest
Solar energy
5.29 kWh/m²
Travel score
4.0
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical August day in Ko Lanta reaches about 28°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 29°C. Set against its neighbours, August runs on par with July and on par with September.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62827
72827
82827
92827
102827
112827
122827
132827
142827
152827
162827
172827
182827
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826
312826

How August really feels in Ko Lanta

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

Ko Lanta weather by month

How August compares with the rest of the year at a glance. August is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°466.311.66.2
Feb29° / 26°25411.86.3
Mar29° / 27°8310.911.95.4
Apr29° / 27°14819.912.24.1
May29° / 27°25825.212.33.5
Jun29° / 27°22921.912.43.8
Jul29° / 27°22722.112.43.9
Aug28° / 27°27022.612.24.0
Sep28° / 26°30224.4123.8
Oct28° / 26°32728.311.83.6
Nov28° / 26°2232311.74.2
Dec28° / 26°10512.311.65.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 9% of August, with mostly cloudy or overcast conditions the remaining 85%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21585
31585
41585
51783
61783
71783
81882
91882
101882
111981
121981
131981
141981
151882
161783
171783
181783
191684
201486
211486
221387
231288
241288
251288
261288
271288
281288
291288
301189
311189

Chance of precipitation in August

Any precipitation

Ko Lanta gets around 270 mm of rain over 22.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 73% and peaks near 78% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
168
268
368
469
569
669
769
869
970
1070
1170
1271
1371
1471
1572
1672
1773
1873
1974
2074
2175
2275
2376
2476
2576
2677
2777
2877
2978
3078
3178

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14060
24060
33961
43961
53961
64060
74060
84060
94159
104258
114258
124357
134456
144555
154654
164753
174852
184852
194951
204951
214951
224951
234951
244951
255050
265050
275050
285149
295248
305248
315347

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 18 min at the start of August to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over August. Sunrise moves from 6:20 AM to 6:19 AM, and sunset from 6:40 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:206:40
212.36:206:39
312.36:206:39
412.36:206:39
512.36:206:39
612.36:206:39
712.36:206:38
812.36:206:38
912.36:206:38
1012.36:206:37
1112.36:206:37
1212.36:206:37
1312.36:206:36
1412.36:206:36
1512.36:206:36
1612.26:206:35
1712.26:206:35
1812.26:206:34
1912.26:206:34
2012.26:206:34
2112.26:206:33
2212.26:206:33
2312.26:206:32
2412.26:206:32
2512.26:206:31
2612.26:206:31
2712.26:206:30
2812.26:196:30
2912.26:196:29
3012.26:196:29
3112.26:196:28

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.29 kWh/m².

For context, solar energy here swings from a low near 4.66 kWh/m² to a high of 6.42 kWh/m² in March across the year — August's 5.29 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in August

Hazard calendar for Ko Lanta

In seasonPeak

In August, Ko Lanta sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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

Ko Lanta's rainy season runs April–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 August a good time to visit Ko Lanta?

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

4.0
Sightseeing
7th-best month of the year
4.7
Beach & pool
8th-best month of the year

August is a reasonable time to visit Ko Lanta for sightseeing.

What to pack for Ko Lanta in August

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

In August, Ko Lanta sees daytime highs around 28°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Ko Lanta in August

The nearest coast averages about 30°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in May at about 30°C and coldest in January near 29°C.

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

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Ko Lanta in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ko Lanta peaks around February 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 13Nov 22UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Extreme

Air quality in Ko Lanta in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Ko Lanta is worst in April — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodGoodModerateApr 1115 µg/m³Aug 2011 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar15Moderate
Apr16Moderate
May13Moderate
Jun13Moderate
Jul13Moderate
Aug11Good
Sep12Moderate
Oct12Good
Nov12Good
Dec13Moderate
Location & terrain

Where is Ko Lanta?

Ko Lanta sits at 7.5°N, 99.1°E, 0 m above sea level, in Thailand. The nearest listed city is Ko Phi Phi, 42 km away.

Topography around Ko Lanta

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

Within 3 km, the terrain around Ko Lanta has significant variations in elevation — a maximum elevation change of 481 m around an average of 77 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 487 m; within 80 km, large variations in elevation — a maximum elevation change of 1,003 m.

The land around Ko Lanta is covered by trees (53%) and water (41%) within 3 km, water (82%) within 16 km, and water (59%) and trees (36%) within 80 km.

3 km
481 m
16 km
487 m
80 km
1,003 m
treesgrasslandartificial surfaceswatermangroves
August weather nearby: Ko Phi Phi 42 km · Trang 58 km · Krabi 63 km · Ao Nang 65 km · Huai Yot 67 km · Ban Ko Sire 83 km · Ban Talat Yai 85 km · Phuket 86 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 Ko Lanta (7.5336°, 99.0865°, elevation 0 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).