Weather in Ko Lanta Yai

14-day forecast · updated today, Thursday, October 29, at 1:01 pm (GMT+7)

Now · light drizzle 80 °F

Feels like: 89 °F
Low / high: 76 / 82 °F
Rain: 100% · 1.12 in
Wind: 6 mph SSW

↘ 29.92 inHg · falling UV 7 · high

Today in Ko Lanta Yai: showers, 76 °F to 82 °F, with a 100% chance of rain (1.12 in) and a light breeze from the south-southwest (6 mph). Tomorrow, light showers, 75 °F to 87 °F and a 96% chance of rain. The warmest day of the week is Sunday 1, at 89 °F.

Temperatures for the next 14 days

82° 76°
Today
87° 75°
Fri 30
85° 74°
Sat 31
89° 74°
Sun 1
85° 73°
Mon 2
84° 74°
Tue 3
87° 74°
Wed 4
88° 74°
Thu 5
89° 75°
Fri 6
87° 75°
Sat 7
88° 74°
Sun 8
85° 74°
Mon 9
87° 74°
Tue 10
87° 74°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Showers	76 / 82 °F	100% · 1.12 in	7 mph SSE	2.5 ft	12:16 pm	ECMWF
Fri 30	Light showers	75 / 87 °F	96% · 0.37 in	6 mph E	1.8 ft	12:30 am · 12:58 pm	ECMWF
Sat 31	Light showers	74 / 85 °F	94% · 0.41 in	9 mph ENE	0.9 ft	1:13 am · 1:48 pm	ECMWF
Sun 1	Light showers	74 / 89 °F	94% · 0.51 in	6 mph NE	0.6 ft	2:03 am · 2:57 pm	ECMWF
Mon 2	Showers	73 / 85 °F	100% · 0.60 in	5 mph NE	0.7 ft	3:15 am · 4:51 pm	ECMWF
Tue 3	Heavy drizzle	74 / 84 °F	100% · 0.15 in	5 mph ENE	0.3 ft	5:07 am · 6:47 pm	ECMWF
Wed 4	Light drizzle	74 / 87 °F	97% · 0.16 in	4 mph E	0.3 ft	6:52 am · 7:50 pm	ECMWF
Thu 5	Drizzle	74 / 88 °F	98% · 0.33 in	3 mph ENE	0.1 ft	7:57 am · 8:33 pm	ECMWF
Fri 6	Light showers	75 / 89 °F	100% · 0.34 in	6 mph ENE	0.2 ft	8:44 am · 9:08 pm	ECMWF
Sat 7	Light showers	75 / 87 °F	98% · 0.43 in	7 mph ENE	1.0 ft	9:22 am · 9:39 pm	ECMWF
Sun 8	Light showers	74 / 88 °F	92% · 0.46 in	8 mph ENE	1.1 ft	9:56 am · 10:08 pm	ECMWF
Mon 9	Drizzle	74 / 85 °F	94% · 0.24 in	9 mph ENE	1.2 ft	10:27 am · 10:37 pm	ECMWF
Tue 10	Light drizzle	74 / 87 °F	94% · 0.09 in	9 mph ENE	1.1 ft	10:56 am · 11:05 pm	ECMWF
Wed 11	Drizzle	74 / 87 °F	92% · 0.24 in	6 mph NE	1.1 ft	11:25 am · 11:33 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Light drizzle	Showers	Heavy drizzle	Light showers	Drizzle	Light drizzle	Light drizzle	Light drizzle
Temperature	77°	76°	76°	76°	79°	82°	80°	78°
Chance of rain	44%	83%	100%	99%	95%	94%	82%	52%
Rain	0.00 in	0.19 in	0.04 in	0.08 in	0.03 in	0.02 in	0.00 in	0.01 in
Wind (mph)	4 ESE	6 SE	6 ESE	7 ESE	5 S	7 SSW	6 S	6 S
Humidity	97%	97%	98%	100%	92%	83%	87%	89%
UV	0	0	0	3	7	3	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain today: take it with some caution.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	82°	87°	85°	89°	85°	84°	87°
AIFS	83°	89°	90°	92°	90°	89°	90°
GFS	83°	84°	90°	88°	90°	86°	85°
ICON	86°	90°	88°	90°	89°	89°	91°
Confidence	high	medium	medium	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1.12 in	0.37 in	0.41 in	0.51 in	0.60 in	0.15 in	0.16 in
AIFS	0.82 in	0.27 in	0.21 in	0.24 in	0.38 in	0.38 in	0.34 in
GFS	0.79 in	0.10 in	0.21 in	0.15 in	0.24 in	0.48 in	0.02 in
ICON	0.24 in	0.18 in	0.01 in	0.09 in	0.44 in	0.07 in	0.14 in
Confidence	medium	medium	medium	medium	medium	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	717	613	918	614	518	515	415
AIFS	5	4	4	4	4	4	4
GFS	1425	615	610	612	67	48	79
ICON	817	613	611	49	412	413	510
Confidence	medium	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	100%	96%	94%	94%	100%	100%	97%
GFS (GEFS, 31 scenarios)	100%	52%	87%	90%	90%	92%	81%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal +0.7 °F	Normal	A bit above +1.6 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +0.9 °F	Normal	A bit above +1.4 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.4 °F	Normal	A bit above +1.6 °F	84° / 79°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.6 °F	Normal	Above +1.8 °F	85° / 79°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.0 °F	Normal	Above +1.8 °F	85° / 79°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +2.2 °F	Normal	Above +2.5 °F
December	Above +2.7 °F	Normal	Above +2.2 °F
January	Above +3.2 °F	Below −52%	Above +2.5 °F
February	Above +3.4 °F	Below −69%	Above +2.7 °F
March	Above +3.8 °F	Below −66%	Above +2.7 °F

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Ko Lanta Yai climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Ko Lanta Yai is from January to February: highs of 89 °F to 91 °F, about 5 rainy days a month and 8 hours of sunshine a day.

Tropical cyclones rarely pass near Ko Lanta Yai: one within 93 mi in the last 30 years (1996–2025), Pabuk, in January 2018.

89° 73°

JanJ
91° 73°

FebF
92° 74°

MarM
92° 75°

AprA
90° 76°

MayM
89° 76°

JunJ
88° 75°

JulJ
87° 75°

AugA
87° 75°

SepS
86° 74°

OctO
86° 74°

NovN
87° 73°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	89°	73°	2.09 in	6	7.9	83°	1.2 ft
FebruaryFeb	91°	73°	1.27 in	3	9.1	84°	1.2 ft
MarchMar	92°	74°	3.55 in	9	8.3	85°	1.1 ft
AprilApr	92°	75°	5.09 in	15	7.5	86°	1.0 ft
MayMay	90°	76°	8.20 in	22	6.0	87°	1.7 ft
JuneJun	89°	76°	8.07 in	20	5.6	86°	2.2 ft
JulyJul	88°	75°	8.38 in	20	5.8	86°	2.2 ft
AugustAug	87°	75°	10.97 in	21	5.6	85°	2.3 ft
SeptemberSep	87°	75°	10.63 in	23	5.1	85°	2.2 ft
OctoberOct	86°	74°	12.45 in	27	5.1	84°	1.6 ft
NovemberNov	86°	74°	8.14 in	22	6.0	84°	1.2 ft
DecemberDec	87°	73°	4.89 in	14	6.6	84°	1.3 ft

Month	Water	Waves
Jan	83°	1.2 ft
Feb	84°	1.2 ft
Mar	85°	1.1 ft
Apr	86°	1.0 ft
May	87°	1.7 ft
Jun	86°	2.2 ft
Jul	86°	2.2 ft
Aug	85°	2.3 ft
Sep	85°	2.2 ft
Oct	84°	1.6 ft
Nov	84°	1.2 ft
Dec	84°	1.3 ft

Days: rainy days in the month. Sun: hours a day.

A normal year brings 83.73 in of rain on about 201 days and about 2,400 hours of sunshine.

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now80 °Ffeels like 89 °F

Tomorrow75 / 87 °F

It's 80 °F now (feels like 89 °F). Today, 76 °F to 82 °F; tomorrow, 75 °F to 87 °F.

Chance of rain

Today 100% 1.12 in
Fri 30 96% 0.37 in
Sat 31 94% 0.41 in
Sun 1 94% 0.51 in
Mon 2 100% 0.60 in
Tue 3 100% 0.15 in
Wed 4 97% 0.16 in

Today the chance of rain reaches 100%, with 1.12 in in total. The next day with likely rain is Friday 30: 96% and 0.37 in.

Recent rain: last 24 hours, 1.41 in; last 3 days, 4.41 in; last 7 days, 6.61 in.

Humidity and dew point

Humidity88%

Dew point76 °F

Humidity is 88% now and the dew point is 76 °F. With a dew point this high, it feels muggy.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now14 migood

Clouds100%

Visibility is good now (14 mi). No fog expected today.

UV index

Now6

Today's peak7high

Fri 30: 8 · Sat 31: 10 · Sun 1: 11

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady Anglers expect normal activity
↘ Falling · now Anglers say fish feed more before the change

29.8029.9030.00 29.85

Falling now (−0.06 inHg in 3 hours). It barely changes over the next 48 hours. Falling pressure: anglers say fish feed more before the change. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 24

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Showers	75 / 79 °F	1.25 in	8 mph E
Tue 27	Showers	75 / 86 °F	1.63 in	8 mph ESE
Mon 26	Showers	76 / 85 °F	0.57 in	5 mph E
Sun 25	Light showers	76 / 86 °F	0.96 in	5 mph N
Sat 24	Light showers	76 / 86 °F	0.67 in	7 mph NW
Fri 23	Light showers	76 / 92 °F	0.28 in	6 mph NNW
Thu 22	Light showers	76 / 92 °F	0.23 in	6 mph NNE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light showers	77 / 90 °F	0.40 in	6 mph N
Tue 20	Light showers	77 / 85 °F	0.59 in	6 mph NNW
Mon 19	Light drizzle	75 / 87 °F	0.15 in	6 mph NW
Sun 18	Showers	76 / 85 °F	0.57 in	5 mph N
Sat 17	Light showers	75 / 91 °F	0.41 in	6 mph N
Fri 16	Heavy drizzle	76 / 92 °F	0.24 in	6 mph NE
Thu 15	Light showers	76 / 91 °F	0.38 in	8 mph NE
Wed 14	Light showers	76 / 85 °F	0.33 in	6 mph NNE
Tue 13	Light showers	76 / 86 °F	0.57 in	5 mph ENE
Mon 12	Light showers	76 / 84 °F	0.75 in	6 mph ENE
Sun 11	Light showers	76 / 86 °F	0.59 in	4 mph NE
Sat 10	Heavy drizzle	76 / 91 °F	0.15 in	6 mph NE
Fri 9	Drizzle	76 / 87 °F	0.18 in	6 mph NNW
Thu 8	Drizzle	77 / 86 °F	0.16 in	5 mph NW
Wed 7	Showers	76 / 86 °F	0.45 in	4 mph N
Tue 6	Light showers	77 / 87 °F	0.39 in	7 mph NNE
Mon 5	Light drizzle	77 / 89 °F	0.04 in	6 mph WNW
Sun 4	Light showers	77 / 86 °F	0.35 in	5 mph WNW
Sat 3	Heavy drizzle	77 / 85 °F	0.28 in	5 mph WNW
Fri 2	Heavy drizzle	76 / 89 °F	0.29 in	6 mph NNE
Thu 1	Light showers	75 / 91 °F	0.23 in	6 mph NE
Wed 30	Showers	77 / 88 °F	0.48 in	6 mph NNW
Tue 29	Drizzle	78 / 89 °F	0.09 in	6 mph W

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in Ko Lanta YaiQuestions

What's the weather like today in Ko Lanta Yai?

Showers, from 76 °F to 82 °F, with a light breeze from the south-southwest (6 mph) and a 100% chance of rain.

Will it rain tomorrow in Ko Lanta Yai?

On Friday 30 the chance of rain is 96% (0.37 in): light showers.

How warm will it be this week?

Between a low of 73 °F and a high of 89 °F; the warmest day, Sunday 1.

What's the UV index today?

It reaches 7 (high). Sunscreen, hat and shade between 12 and 4 pm.

Is the pressure rising or falling?

It's 29.92 inHg and falling: +0.05 inHg over the last 24 hours.

When is the best time to visit Ko Lanta Yai?

The best time to visit Ko Lanta Yai is from January to February: highs of 89 °F to 91 °F, about 5 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Ko Lanta Yai in October?

In October, Ko Lanta Yai normally sees highs of 86 °F and lows of 74 °F, with about 27 rainy days (12.45 in for the month) and 5 hours of sunshine a day. The sea is around 84 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Ko Lanta Yai?

The warmest is April, with average highs of 92 °F, and the coldest February, with lows of 73 °F. The wettest is October (12.45 in) and the driest, February.

More about Ko Lanta Yai today

Weather near Ko Lanta Yai

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 19 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 1:01 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from