Weather in Koh Tao

14-day forecast · updated today, Thursday, October 29, at 8:19 am (GMT+7)

Now · heavy drizzle 81 °F

Feels like: 85 °F
Low / high: 80 / 83 °F
Rain: 100% · 1.13 in
Wind: 16 mph SE

↗ 29.94 inHg · rising UV 6 · high

Today in Koh Tao: showers, 80 °F to 83 °F, with a 100% chance of rain (1.13 in) and a moderate breeze from the southeast (16 mph). Tomorrow, light showers, 81 °F to 83 °F and a 78% chance of rain. The warmest day of the week is Wednesday 4, at 84 °F.

Temperatures for the next 14 days

83° 80°
Today
83° 81°
Fri 30
83° 81°
Sat 31
83° 81°
Sun 1
83° 81°
Mon 2
83° 80°
Tue 3
84° 80°
Wed 4
83° 80°
Thu 5
83° 81°
Fri 6
83° 80°
Sat 7
82° 79°
Sun 8
84° 79°
Mon 9
84° 80°
Tue 10
83° 81°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	Model
Today · 29	Showers	80 / 83 °F	100% · 1.13 in	18 mph ESE	2.2 ft	ECMWF
Fri 30	Light showers	81 / 83 °F	78% · 0.47 in	17 mph ESE	2.1 ft	ECMWF
Sat 31	Light showers	81 / 83 °F	80% · 0.48 in	17 mph ESE	1.4 ft	ECMWF
Sun 1	Light showers	81 / 83 °F	47% · 0.22 in	12 mph E	1.2 ft	ECMWF
Mon 2	Light drizzle	81 / 83 °F	51% · 0.13 in	9 mph ENE	0.7 ft	ECMWF
Tue 3	Light showers	80 / 83 °F	71% · 0.32 in	7 mph E	0.3 ft	ECMWF
Wed 4	Drizzle	80 / 84 °F	86% · 0.27 in	11 mph E	0.7 ft	ECMWF
Thu 5	Drizzle	80 / 83 °F	69% · 0.16 in	9 mph ESE	0.6 ft	ECMWF
Fri 6	Drizzle	81 / 83 °F	68% · 0.21 in	13 mph E	0.9 ft	ECMWF
Sat 7	Light showers	80 / 83 °F	90% · 0.65 in	16 mph E	2.2 ft	ECMWF
Sun 8	Light showers	79 / 82 °F	93% · 0.78 in	15 mph E	2.2 ft	ECMWF
Mon 9	Light showers	79 / 84 °F	100% · 0.62 in	13 mph E	2.2 ft	ECMWF
Tue 10	Drizzle	80 / 84 °F	80% · 0.16 in	12 mph E	1.7 ft	ECMWF
Wed 11	Drizzle	81 / 83 °F	85% · 0.24 in	12 mph E	1.8 ft	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.

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	Showers	Heavy drizzle	Rain	Heavy drizzle	Drizzle	Drizzle	Drizzle	Light drizzle
Temperature	83°	81°	80°	81°	82°	82°	82°	83°
Chance of rain	100%	94%	96%	98%	98%	80%	54%	52%
Rain	0.12 in	0.04 in	0.11 in	0.04 in	0.04 in	0.02 in	0.02 in	0.01 in
Wind (mph)	15 ESE	14 E	14 ESE	16 SE	17 SE	17 SE	14 SE	17 ESE
Humidity	78%	79%	81%	83%	82%	82%	80%	81%
UV	0	0	0	3	6	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	83°	83°	83°	83°	83°	83°	84°
AIFS	83°	83°	83°	83°	83°	83°	83°
GFS	84°	84°	84°	84°	85°	84°	84°
ICON	85°	85°	83°	84°	85°	84°	84°
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1.13 in	0.47 in	0.48 in	0.22 in	0.13 in	0.32 in	0.27 in
AIFS	1.28 in	0.27 in	0.18 in	0.13 in	0.16 in	0.43 in	0.28 in
GFS	0.81 in	0.04 in	0.15 in	0.05 in	0.32 in	0.07 in	0.09 in
ICON	2.04 in	1.05 in	0.73 in	0.67 in	0.40 in	0.69 in	1.05 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	1824	1723	1723	1216	916	715	1116
AIFS	15	13	11	10	6	11	11
GFS	1416	1212	1011	1010	99	910	1111
ICON	1723	1722	914	912	813	917	1017
Confidence	high	high	medium	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%	78%	80%	47%	51%	71%	86%
GFS (GEFS, 31 scenarios)	100%	57%	74%	55%	72%	52%	35%

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 +1.3 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.7 °F	A bit above +20%	A bit above +1.4 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.4 °F	Normal	Above +1.8 °F	83° / 81°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.0 °F	Normal	Above +2.3 °F	84° / 82°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.3 °F	Normal	Above +2.7 °F	84° / 82°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +2.5 °F	Normal	Above +2.9 °F
December	Above +3.4 °F	Normal	Well above +4.0 °F
January	Above +3.6 °F	A bit below −27%	Well above +4.1 °F
February	Above +3.1 °F	A bit below −42%	Above +3.2 °F
March	Above +3.1 °F	Below −68%	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.

Koh Tao climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Koh Tao is in February: highs of 86 °F, about 5 rainy days a month and 8 hours of sunshine a day.

84° 72°

JanJ
86° 73°

FebF
88° 75°

MarM
90° 76°

AprA
90° 76°

MayM
88° 76°

JunJ
88° 76°

JulJ
87° 76°

AugA
87° 75°

SepS
85° 74°

OctO
84° 74°

NovN
84° 72°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	84°	72°	4.11 in	9	7.2	82°	2.1 ft
FebruaryFeb	86°	73°	1.88 in	5	8.4	83°	1.9 ft
MarchMar	88°	75°	4.93 in	9	8.0	84°	1.6 ft
AprilApr	90°	76°	3.21 in	12	7.6	86°	1.2 ft
MayMay	90°	76°	4.63 in	26	5.8	86°	1.4 ft
JuneJun	88°	76°	3.13 in	26	5.4	86°	1.8 ft
JulyJul	88°	76°	2.97 in	28	4.9	85°	1.9 ft
AugustAug	87°	76°	3.97 in	26	5.0	84°	2.0 ft
SeptemberSep	87°	75°	4.35 in	27	4.5	84°	1.9 ft
OctoberOct	85°	74°	9.98 in	27	5.4	84°	1.4 ft
NovemberNov	84°	74°	11.28 in	21	6.3	83°	1.9 ft
DecemberDec	84°	72°	6.27 in	14	6.3	82°	2.6 ft

Month	Water	Waves
Jan	82°	2.1 ft
Feb	83°	1.9 ft
Mar	84°	1.6 ft
Apr	86°	1.2 ft
May	86°	1.4 ft
Jun	86°	1.8 ft
Jul	85°	1.9 ft
Aug	84°	2.0 ft
Sep	84°	1.9 ft
Oct	84°	1.4 ft
Nov	83°	1.9 ft
Dec	82°	2.6 ft

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

A normal year brings 60.70 in of rain on about 230 days and about 2,250 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

Now81 °Ffeels like 85 °F

Tomorrow81 / 83 °F

It's 81 °F now (feels like 85 °F). Today, 80 °F to 83 °F; tomorrow, 81 °F to 83 °F.

Chance of rain

Today 100% 1.13 in
Fri 30 78% 0.47 in
Sat 31 80% 0.48 in
Sun 1 47% 0.22 in
Mon 2 51% 0.13 in
Tue 3 71% 0.32 in
Wed 4 86% 0.27 in

Today the chance of rain reaches 100%, with 1.13 in in total. The next day with likely rain is Friday 30: 78% and 0.47 in.

Recent rain: last 24 hours, 1.58 in; last 3 days, 2.52 in; last 7 days, 2.83 in.

Humidity and dew point

Humidity83%

Dew point75 °F

Humidity is 83% now and the dew point is 75 °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

Now4.1 mimoderate

Clouds100%

Visibility is moderate now (4.1 mi). No fog expected today.

UV index

Now2

Today's peak6high

Fri 30: 8 · Sat 31: 8 · Sun 1: 9

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

29.8029.9030.00 29.85

Rising now (+0.06 inHg in 3 hours). It barely changes over the next 48 hours. Rising pressure: anglers say fish bite less for a while. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 32

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	81 / 84 °F	1.28 in	19 mph E
Tue 27	Heavy drizzle	83 / 86 °F	0.25 in	16 mph ESE
Mon 26	Light showers	78 / 85 °F	0.36 in	18 mph ESE
Sun 25	Drizzle	83 / 88 °F	0.07 in	9 mph SSE
Sat 24	Drizzle	84 / 88 °F	0.10 in	11 mph W
Fri 23	Light drizzle	85 / 88 °F	0.02 in	9 mph N
Thu 22	Light drizzle	83 / 87 °F	0.04 in	8 mph NE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light showers	82 / 86 °F	0.28 in	7 mph E
Tue 20	Drizzle	81 / 86 °F	0.20 in	8 mph SE
Mon 19	Heavy drizzle	80 / 83 °F	0.49 in	8 mph N
Sun 18	Drizzle	82 / 86 °F	0.16 in	9 mph NE
Sat 17	Heavy drizzle	85 / 88 °F	0.17 in	10 mph E
Fri 16	Overcast	86 / 89 °F	0	8 mph ENE
Thu 15	Overcast	83 / 88 °F	0	8 mph NE
Wed 14	Drizzle	82 / 85 °F	0.23 in	10 mph E
Tue 13	Light showers	82 / 84 °F	0.33 in	12 mph ENE
Mon 12	Light showers	81 / 86 °F	0.26 in	13 mph E
Sun 11	Drizzle	82 / 85 °F	0.22 in	13 mph E
Sat 10	Drizzle	83 / 88 °F	0.15 in	15 mph NNE
Fri 9	Light drizzle	82 / 87 °F	0.04 in	11 mph N
Thu 8	Drizzle	81 / 86 °F	0.14 in	6 mph NW
Wed 7	Light showers	80 / 86 °F	0.60 in	9 mph NNW
Tue 6	Light showers	83 / 87 °F	0.16 in	10 mph SSW
Mon 5	Light drizzle	83 / 87 °F	0.05 in	11 mph W
Sun 4	Light drizzle	83 / 86 °F	0.07 in	13 mph W
Sat 3	Drizzle	85 / 87 °F	0.16 in	11 mph WSW
Fri 2	Light drizzle	81 / 89 °F	0.05 in	9 mph W
Thu 1	Overcast	83 / 89 °F	0	9 mph SSW
Wed 30	Drizzle	82 / 87 °F	0.09 in	10 mph WSW
Tue 29	Light drizzle	81 / 86 °F	0.09 in	6 mph SE

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 Koh TaoQuestions

What's the weather like today in Koh Tao?

Showers, from 80 °F to 83 °F, with a moderate breeze from the southeast (16 mph) and a 100% chance of rain.

Will it rain tomorrow in Koh Tao?

On Friday 30 the chance of rain is 78% (0.47 in): light showers.

How warm will it be this week?

Between a low of 80 °F and a high of 84 °F; the warmest day, Wednesday 4.

What's the UV index today?

It reaches 6 (high). Sunscreen, hat and shade between 12 and 4 pm.

Is the pressure rising or falling?

It's 29.94 inHg and rising: +0.03 inHg over the last 24 hours.

When is the best time to visit Koh Tao?

The best time to visit Koh Tao is in February: highs of 86 °F, about 5 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Koh Tao in October?

In October, Koh Tao normally sees highs of 85 °F and lows of 74 °F, with about 27 rainy days (9.98 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 Koh Tao?

The warmest is April, with average highs of 90 °F, and the coldest January, with lows of 72 °F. The wettest is November (11.28 in) and the driest, February.

More about Koh Tao today

Weather near Koh Tao

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 9.0 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 8:19 am (local time).

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