Military Airport
RestrictedThis is a Japan Air Self-Defense Force (JASDF) installation. Civil access is not permitted.
Access Notes:
JASDF bases closed to civil traffic
Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
VFRJMSDF Shimofusa Air Base is currently reporting visual flight rules (VFR) conditions with broken clouds at 5,000 feet and 10 miles or greater visibility. Note: This observation is 659.4 hours old and conditions may have changed.
Wind Analysis
Winds are from the north-northeast (20°) at 9 knots. Runway 01/19 is favored with a 9-knot headwind and 2-knot crosswind component.
Visibility & Ceiling
Visibility is unrestricted. The ceiling is 5000 feet AGL (broken), well above standard VFR minimums.
Temperature & Moisture
Temperature is 11°C (52°F) with a dewpoint of 10°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.
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.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
24-Hour Weather Evolution
- • 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
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
|
✈️ 01/19
Active: 01
|
7,380 ft | 150 ft | CON | 359° |
↑ 8.9 kt
•
↔ 1.6 kt
10° angle
|
Weather Statistics - RJTL
448 observations | Sep 2025 - Mar 2026Flight Rules Distribution
JMSDF Shimofusa Air Base is frequently affected by reduced visibility conditions, with VFR weather only 11.6% of the time and IFR/LIFR conditions occurring in 63.4% of observations. Prevailing winds are from the NW averaging 6.2 knots. Temperature extremes range from -2°C to 34°C, reflecting significant seasonal variation. Fog is a notable factor, occurring in approximately 17.9% of observations, with visibility below 3 SM in 0% of reports. The best months for VFR flying are January, September, March.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 448 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.
JMSDF Shimofusa Air Base - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About JMSDF Shimofusa Air Base
JMSDF Shimofusa Air Base is a military facility. Civilian access may be restricted or require Prior Permission (PPR). Pilots should consult the JP AIP for current access procedures and restrictions.
Overview
JMSDF Shimofusa Air Base serves as a strategic military aviation facility located in Matsudo, Japan. Situated at 98 feet above mean sea level, the base operates a single concrete runway (01/19) measuring 7,380 feet in length. The airport's geographical coordinates (35.798901, 140.011002) place it in the Greater Tokyo metropolitan region.
Flying Conditions
Weather conditions at Shimofusa exhibit significant variability, with instrument flight rules (IFR) dominating 35.2% of observations and low IFR conditions present 28.9% of the time. Prevailing northwest winds at an average of 5.4 knots characterize the local wind patterns, with occasional gusts reaching 24 knots. Temperature ranges from 0°C to 34°C, creating diverse atmospheric conditions throughout the year.
Notable Features
The airport experiences consistent northwest wind patterns, with wind direction predominantly at 315 degrees. Visibility averages 10 statute miles, with fog occurring in 19.2% of observations. Calm wind conditions are rare, existing in only 0.5% of recorded meteorological data, which suggests predictable wind dynamics for pilots.
Approach Considerations
Runway 01/19 demonstrates favorable wind alignment, with 100% wind compatibility and an average crosswind of just 3.1 knots. January, September, and November represent the most consistently favorable visual flight rules (VFR) months for operations. Pilots should anticipate potential instrument meteorological conditions, particularly given the high percentage of IFR and low IFR observations.
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.
Learn More
Recommended guides based on current conditions at RJTL
Official Data Sources
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.