Shonai Airport

RJSY / SYO

Shonai, JP

Last Updated
Mar 4, 09:00Z

Current Weather

Display Units
Recent 46 min ago
09:00Z

☀️ Day
VFR
Flight Rules
5°C
Temperature
Dewpoint: 3°C
12 kt
310° G23 kt
10+ km
Visibility
3,000 ft
Ceiling
Above Ground Level
--
QNH
Altimeter Setting

Raw METAR

METAR RJSY 040900Z 31012G23KT 270V360 9999 -SHRA FEW005 SCT015 BKN030 05/03 Q1014

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 86 ft
FEW 500 ft AGL
SCT 1,500 ft AGL
BKN 3,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
500 ft
AGL (Above Ground)
586 ft AMSL
SCT
Scattered (3/8-4/8 sky coverage)
1,500 ft
AGL (Above Ground)
1,586 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
3,000 ft
AGL (Above Ground)
3,086 ft AMSL

24-Hour Weather Evolution

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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
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Airport Runway Layout

N
JSY
09
27 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 09/27
Active: 27
6,560 ft 150 ft ASP 79°
9.2 kt 7.7 kt
40° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - RJSY

2,683 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
75.8%
MVFR
12.9%
IFR
6.3%
LIFR
5%

Shonai Airport typically experiences VFR conditions 75.8% of the time, though instrument-rated pilots will find IFR weather present approximately 11.3% of observations. Prevailing winds are from the W averaging 11.2 knots, with gusts recorded up to 37 knots. Temperature extremes range from -3°C to 29°C, reflecting significant seasonal variation. The best months for VFR flying are November, September, October.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 11.2 kt
Maximum Recorded: 37 kt
Calm Winds: 0.4%
Direction Distribution:
N
5.4%
NE
1.5%
E
22.5%
SE
5.9%
S
5%
SW
5.8%
W
29.1%
NW
24.4%

Temperature Range

Average: 8.7°C
Range: -3°C to 29°C
-3°C 29°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 0.4%

Best Months for VFR

November September October

Runway Wind Analysis

Runway 09/27
Favorable wind: 100%
Avg crosswind: 4.5 kt

Statistics computed from 2,683 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.

Shonai Airport - Airport Information

Airport Details

ICAO Code: RJSY
IATA Code: SYO
Type: medium airport
Status: active
Elevation: 86 ft MSL

Location

City: Shonai
Country: JP
Latitude: 38.812199°
Longitude: 139.787003°
Time Zone: Europe/Moscow

Runway Information

Runway 09/27
Length: 6,560 ft
Width: 150 ft
Surface: ASP
ILS: No

About Shonai Airport

Overview

Shonai Airport is a medium-sized airport located in the Shonai region of Japan, serving regional transportation needs. Situated at an elevation of 86 feet MSL, the airport provides critical aviation infrastructure for the local area with its single runway 09/27 measuring 6,560 feet in length.

Flying Conditions

Pilots can expect predominantly favorable VFR conditions, with 80.7% of observed periods offering clear weather. The airport experiences prevailing westerly winds averaging 10.9 knots, with occasional gusts up to 37 knots. Temperature ranges from -3°C to 29°C, with most stable flying conditions occurring in September, October, and November.

Notable Features

The airport's single runway (09/27) is asphalted and offers 100% favorable wind alignment, with an average crosswind component of just 4.5 knots. Its geographic location at coordinates 38.812199, 139.787003 suggests a coastal or near-coastal environment, which may influence local meteorological conditions.

Approach Considerations

Given the consistent westerly winds, runway 27 will typically offer the most favorable approach conditions. Pilots should anticipate minimal visibility restrictions, with average visibility around 10 statute miles and only 0.5% of observations reporting fog. The low frequency of IFR conditions (5.2%) suggests generally reliable visual meteorological parameters.

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.