St. John's International Airport

CYYT / YYT

St. John's, CA

Last Updated
Apr 22, 21:48Z

Current Weather

Display Units
Fresh 3 min ago
21:48Z

🌙 Night
VFR
Flight Rules
1°C
Temperature
Dewpoint: 1°C
6 kt
290°
--
Visibility
Ceiling
Unlimited
1002 hPa
QNH
Altimeter Setting

Raw METAR

SPECI CYYT 222148Z 29006KT 3/8SM R16/3500V4500FT/U R10/3000V3500FT/N -DZ FG VV003 01/01 A2959 RMK FG8 SLP027

Weather Briefing

VFR

St. John's International Airport is currently reporting visual flight rules (VFR) conditions with clear skies.

Wind Analysis

Winds are from the west-northwest (290°) at 6 knots. Runway 28 is favored with a 6-knot headwind and 1-knot crosswind component.

Visibility & Ceiling

Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 1°C (34°F) with a dewpoint of 1°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

Forecast Outlook

The TAF forecast covers the next 24 hours. IFR conditions are expected to persist or develop. An instrument rating and IFR flight plan are recommended. Expected weather includes: Light Freezing Rain, Freezing Fog, Freezing Rain, Mist, Light Rain, Fog, Light Freezing Rain, Mist, Light Freezing Drizzle, Mist, Light Rain, Light Drizzle, Mist, Light Showers Snow, FCST. Temporary LIFR conditions are forecast with Freezing Rain, Mist between 18:00Z and 20:00Z. Temporary LIFR conditions are forecast with Light Freezing Rain, Mist between 20:00Z and 22:00Z. Temporary LIFR conditions are forecast with Light Rain, Light Drizzle, Mist between 22:00Z and 00:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. 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
1002 hPa
Sea Level Pressure
For altitude above MSL
QFE
987 hPa
Field Pressure
Height above aerodrome (461 ft)
Pressure Alt
799 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -770 ft
ISA Deviation: -13.1°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF CYYT 221741Z 2218/2318 04015G25KT 1/2SM -FZRA FZFG VV003 TEMPO 2218/2220 1SM FZRA BR OVC004 FM222000 01010G20KT 1/2SM -RA FG VV003 TEMPO 2220/2222 1SM -FZRA BR OVC004 FM222200 34012KT 3/4SM -FZDZ BR OVC003 TEMPO 2222/2224 2SM -RA -DZ BR OVC004 PROB30 2222/2224 2SM -FZRA BR FM230000 31012G22KT 2SM -FZDZ BR SCT002 OVC004 PROB30 2300/2302 2SM -FZRA BR OVC002 FM230600 28015G25KT 5SM -FZDZ BR OVC008 FM231000 28015G25KT P6SM -SHSN SCT008 OVC012 PROB30 2310/2314 5SM -SHSN OVC008 FM231400 28012KT P6SM OVC015 RMK NXT FCST BY 230000Z
Upcoming Changes (Next 12 Hours)
21:51Z BASE
+0h
LIFR 40° 15 kt
Visibility: 1/2SM
Ceiling: 300 ft
Light Freezing Rain, Freezing Fog
22:00Z FM222200
+1h
LIFR 340° 12 kt
Visibility: 3/4SM
Ceiling: 300 ft
Light Freezing Drizzle, Mist
22:00Z TEMPO
+1h
LIFR
Visibility: 2SM
Ceiling: 400 ft
Light Rain, Light Drizzle, Mist
22:00Z PROB30
+1h
IFR
Visibility: 2SM
Light Freezing Rain, Mist

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
YYT
02
20
10
28 ✈️
16
34

Runway Information

Runway Length Width Surface Heading Wind Component
02/20 5,028 ft 100 ft ASP 356°
2.4 kt 5.5 kt
66° angle
✈️ 10/28
Active: 28
8,502 ft 200 ft ASP 86°
5.9 kt 1.0 kt
10° angle
16/34 7,005 ft 197 ft ASP 142°
5.1 kt 3.2 kt
148° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - CYYT

8,266 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
46.8%
MVFR
23.6%
IFR
16.5%
LIFR
13.1%

St. John's International Airport is frequently affected by reduced visibility conditions, with VFR weather only 46.8% of the time and IFR/LIFR conditions occurring in 29.6% of observations. Prevailing winds are from the W averaging 16 knots, with gusts recorded up to 56 knots. Temperature extremes range from -14°C to 22°C, reflecting significant seasonal variation. Fog is a notable factor, occurring in approximately 14.9% of observations, with visibility below 3 SM in 7.5% of reports. The best months for VFR flying are September, October, December.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 16 kt
Maximum Recorded: 56 kt
Calm Winds: 0.5%
Direction Distribution:
N
11.4%
NE
6.2%
E
7.5%
SE
5.6%
S
12.7%
SW
13.4%
W
30.5%
NW
12.1%

Temperature Range

Average: 2.1°C
Range: -14°C to 22°C
-14°C 22°C

Visibility

Average: 12.8 SM
Below 3 SM: 7.5%
Fog Frequency: 14.9%

Best Months for VFR

September October December

Runway Wind Analysis

Runway 02/20
Favorable wind: 100%
Avg crosswind: 11 kt
Runway 10/28
Favorable wind: 100%
Avg crosswind: 8.8 kt
Runway 16/34
Favorable wind: 100%
Avg crosswind: 11.3 kt

Statistics computed from 8,266 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

St. John's International Airport - Airport Information

Airport Details

ICAO Code: CYYT
IATA Code: YYT
Type: large airport
Status: active
Elevation: 461 ft MSL

Location

City: St. John's
Country: CA
Latitude: 47.618599°
Longitude: -52.751900°
Time Zone: Etc/GMT+4

Runway Information

Runway 02/20
Length: 5,028 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 10/28
Length: 8,502 ft
Width: 200 ft
Surface: ASP
ILS: No
Runway 16/34
Length: 7,005 ft
Width: 197 ft
Surface: ASP
ILS: No

About St. John's International Airport

Overview

St. John's International Airport serves as a critical aviation hub in Newfoundland, Canada, located at coordinates 47.618599, -52.751900. Situated at an elevation of 461 feet mean sea level, this large airport provides essential transportation infrastructure for the eastern Canadian region. The airport supports multiple runway configurations that can accommodate a wide range of aircraft operations.

Flying Conditions

The airport's three asphalt runways offer versatile operational capabilities, with lengths ranging from 5,028 to 8,502 feet. Located in an eastern coastal environment, St. John's experiences variable weather conditions typical of the Newfoundland maritime climate. Pilots should anticipate potential rapid weather changes and prepare for potential wind shifts across the airport's multiple runway orientations.

Notable Features

St. John's International Airport features three parallel and intersecting runways (02/20, 10/28, and 16/34), providing multiple approach and departure options. The airport's elevation of 461 feet and coastal location suggest potential terrain and wind considerations for arriving and departing aircraft. Runway surface types are consistently asphalt, supporting reliable ground operations across all runways.

Approach Considerations

With runway headings of 02/20, 10/28, and 16/34, pilots have multiple options for approach and departure based on prevailing wind conditions. The longest runway (10/28 at 8,502 feet) provides the most extensive landing and takeoff capabilities. Pilots should carefully assess current wind direction and runway length when planning approach and departure strategies.

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.