Samui Airport

VTSM / USM

Na Thon (Ko Samui Island), TH

Last Updated
May 14, 15:00Z

Current Weather

Display Units
Recent 57 min ago
15:00Z

☀️ Day
VFR
Flight Rules
30°C
Temperature
Dewpoint: 26°C
2 kt
Variable
10+ km
Visibility
Ceiling
Unlimited
1009 hPa
QNH
Altimeter Setting

Raw METAR

METAR VTSM 141500Z VRB02KT 9999 FEW020 30/26 Q1009 NOSIG

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 64 ft
FEW 2,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
2,000 ft
AGL (Above Ground)
2,064 ft AMSL

Weather Briefing

VFR

Samui Airport is currently reporting visual flight rules (VFR) conditions with few clouds at 2,000 feet and 10 miles or greater visibility.

Wind Analysis

Winds are calm, presenting no crosswind concerns for any runway.

Visibility & Ceiling

Visibility is unrestricted. No ceiling exists. Cloud layers reported: few at 2,000 ft.

Temperature & Moisture

Temperature is 30°C (86°F) with a dewpoint of 26°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.

Forecast Outlook

The TAF forecast covers the next 24 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Thunderstorm Rain. Temporary MVFR conditions are forecast with Light Thunderstorm Rain between 04:00Z and 12:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1009 hPa
Sea Level Pressure
For altitude above MSL
QFE
1007 hPa
Field Pressure
Height above aerodrome (64 ft)
Pressure Alt
192 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,007 ft
ISA Deviation: +15.1°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF VTSM 141100Z 1412/1512 30005KT 9999 FEW020 TEMPO 1504/1512 VRB15G25KT -TSRA FEW016CB SCT018 BKN100
Upcoming Changes (Next 12 Hours)
15:56Z BASE
+0h
VFR 300° 5 kt
Visibility: 10+ km

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
TSM
17
35

Runway Information

Runway Length Width Surface Heading Wind Component
17/35 6,759 ft 148 ft ASP 174° No wind data
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - VTSM

4,129 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
97%
MVFR
2.7%
IFR
0.3%
LIFR
0%

Samui Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 97% of the time. Prevailing winds are from the SE averaging 8 knots, with gusts recorded up to 40 knots. The climate is relatively stable with temperatures averaging 29.1°C (range: 22°C to 36°C). The best months for VFR flying are April, February, January.

Wind Analysis

Prevailing Direction: SE (135°)
Average Speed: 8 kt
Maximum Recorded: 40 kt
Calm Winds: 8.3%
Direction Distribution:
E
8.1%
N
10.8%
S
9.3%
W
5.9%
NE
8.9%
NW
11.4%
SE
36.8%
SW
0.5%

Temperature Range

Average: 29.1°C
Range: 22°C to 36°C
22°C 36°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 0%

Best Months for VFR

April February January

Runway Wind Analysis

Runway 17/35
Favorable wind: 100%
Avg crosswind: 4 kt

Statistics computed from 4,129 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.

Samui Airport - Airport Information

Airport Details

ICAO Code: VTSM
IATA Code: USM
Type: medium airport
Status: active
Elevation: 64 ft MSL

Location

City: Na Thon (Ko Samui Island)
Country: TH
Latitude: 9.547790°
Longitude: 100.061996°
Time Zone: Etc/GMT-7

Runway Information

Runway 17/35
Length: 6,759 ft
Width: 148 ft
Surface: ASP
ILS: No

About Samui Airport

Overview

Samui Airport serves Ko Samui Island in Thailand, located at 9.547790, 100.061996 with an elevation of 64 ft MSL. As a medium-sized airport, it provides critical transportation infrastructure for this popular island destination. The single runway 17/35 spans 6,759 feet with an asphalt surface, supporting regional and tourist air traffic.

Flying Conditions

Weather conditions at VTSM are predominantly VFR, with 95.6% of observations showing favorable visual flight conditions. Winds typically originate from the north (0°) at an average of 7.3 knots, with occasional peaks up to 40 knots and calm periods comprising 13.2% of observations. Temperature remains consistent, averaging 28.6°C with a range between 22°C and 35°C.

Notable Features

The airport's geographic position on an island introduces unique atmospheric dynamics for pilots. Runway 17/35 demonstrates excellent wind alignment, with 100% favorable wind conditions and a modest average crosswind of 4.3 knots. Visibility consistently remains high, averaging 10 statute miles with no reported instances of fog or significant visibility restrictions.

Approach Considerations

January, September, and December represent the most favorable months for VFR operations at Samui Airport. Pilots can expect highly predictable approach conditions with minimal meteorological interference. The runway's orientation and consistent wind patterns provide stable approach and departure environments across most operational periods.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.