Ibaraki Airport / JASDF Hyakuri Air Base

RJAH / IBR

Omitama, JP

Last Updated
Aug 11, 19:00Z

Military Airport

Restricted

This is a Japan Air Self-Defense Force (JASDF) installation. Civil access is not permitted.

Access Notes:

JASDF bases closed to civil traffic

Consult official AIP (Japan AIP ENR 5.2) for current access procedures and restrictions.

Current Weather

Display Units
Fresh 19 min ago
19:00Z

🌙 Night
VFR
Flight Rules
22°C
Temperature
Dewpoint: 22°C
10 kt
90°
10+ km
Visibility
10,000 ft
Ceiling
Above Ground Level
--
QNH
Altimeter Setting

Raw METAR

METAR RJAH 111900Z 09010KT 9999 -SHRA FEW010 SCT045 BKN100 22/22 Q1003

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 105 ft
FEW 1,000 ft AGL
SCT 4,500 ft AGL
BKN 10,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
1,000 ft
AGL (Above Ground)
1,105 ft AMSL
SCT
Scattered (3/8-4/8 sky coverage)
4,500 ft
AGL (Above Ground)
4,605 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
10,000 ft
AGL (Above Ground)
10,105 ft AMSL

Weather Briefing

VFR

Ibaraki Airport / JASDF Hyakuri Air Base is currently reporting visual flight rules (VFR) conditions with broken clouds at 10,000 feet and 10 miles or greater visibility.

Wind Analysis

Winds are from the east (90°) at 10 knots. Runway 03/21 is favored with a 5-knot headwind and 9-knot crosswind component.

Visibility & Ceiling

Visibility is unrestricted. The ceiling is 10000 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 22°C (72°F) with a dewpoint of 22°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 30 hours. IFR conditions are expected to persist or develop. An instrument rating and IFR flight plan are recommended. Expected weather includes: Light Showers Rain, Light Showers Rain, Mist, Light Thunderstorm Rain, Mist. Temporary IFR conditions are forecast with Light Showers Rain, Mist between 18:00Z and 23:00Z. Temporary IFR conditions are forecast with Light Showers Rain, Mist between 09:00Z and 12:00Z. Temporary LIFR conditions are forecast with Light Thunderstorm Rain, Mist between 12:00Z 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.

Forecast (TAF)

View Full TAF
Raw TAF
TAF RJAH 111705Z 1118/1300 09010KT 6000 -SHRA FEW005 BKN012 TEMPO 1118/1123 3000 -SHRA BR FEW003 BKN005 TEMPO 1209/1212 4000 -SHRA BR FEW003 BKN008 TEMPO 1212/1300 2000 -TSRA BR FEW002 BKN005 FEW020CB
Upcoming Changes (Next 12 Hours)
19:19Z BASE
+0h
IFR 90° 10 kt
Visibility: 6 km
Ceiling: 1,200 ft
Light Showers Rain

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
JAH
03 ✈️
21

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 03/21
Active: 03
8,860 ft 150 ft CON 19°
5.0 kt 8.7 kt
60° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - RJAH

8,635 observations | Sep 2025 - Aug 2026

Flight Rules Distribution

VFR
68.6%
MVFR
15.6%
IFR
9.3%
LIFR
6.6%

Ibaraki Airport / JASDF Hyakuri Air Base typically experiences VFR conditions 68.6% of the time, though instrument-rated pilots will find IFR weather present approximately 15.9% of observations. Prevailing winds are from the N averaging 6.7 knots, with gusts recorded up to 35 knots. Temperature extremes range from -8°C to 35°C, reflecting significant seasonal variation. The best months for VFR flying are January, November, March.

Wind Analysis

Prevailing Direction: N (0°)
Average Speed: 6.7 kt
Maximum Recorded: 35 kt
Calm Winds: 2.2%
Direction Distribution:
E
13.3%
N
27.8%
S
12%
W
5.4%
NE
19.7%
NW
6.7%
SE
4.3%
SW
8.6%

Temperature Range

Average: 13.8°C
Range: -8°C to 35°C
-8°C 35°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 3.8%

Best Months for VFR

January November March

Runway Wind Analysis

Runway 03/21
Favorable wind: 100%
Avg crosswind: 3.2 kt

Statistics computed from 8,635 METAR observations (Sep 2025 - Aug 2026). Data sourced from official aviation weather services. Updated daily.

Ibaraki Airport / JASDF Hyakuri Air Base - Airport Information

Airport Details

ICAO Code: RJAH
IATA Code: IBR
Type: medium airport
Status: active
Elevation: 105 ft MSL

Location

City: Omitama
Country: JP
Latitude: 36.181099°
Longitude: 140.414993°
Time Zone: Europe/Moscow

Runway Information

Runway 03/21
Length: 8,860 ft
Width: 150 ft
Surface: CON
ILS: No

About Ibaraki Airport / JASDF Hyakuri Air Base

Ibaraki Airport / JASDF Hyakuri 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

Ibaraki Airport, located in Omitama, Japan, serves as both a civilian and military airfield hosting Japan Air Self-Defense Force operations. Situated at 105 feet mean sea level, the airport provides strategic aviation infrastructure in the Ibaraki Prefecture region. The airport features a substantial 8,860-foot concrete runway oriented 03/21, supporting diverse aircraft operations.

Flying Conditions

Weather conditions at Ibaraki Airport demonstrate predominantly favorable VFR flying conditions, with 73.6% of observations reporting visual meteorological conditions. Temperatures range widely from -7°C to 34°C, with an average of 11.9°C, indicating significant seasonal variation. Wind patterns are consistently from the north, averaging 6.1 knots with occasional gusts up to 27 knots, and experiencing calm conditions only 3% of the time.

Notable Features

The airport's elevation and geographic positioning contribute to relatively stable meteorological environments, with excellent visibility averaging 10 statute miles. Pilots can expect minimal low visibility challenges, with fog present in only 4.4% of observations. The runway's orientation and length provide flexibility for multiple aircraft types and operational requirements.

Approach Considerations

Runway 03/21 demonstrates highly favorable wind conditions, with 100% wind compatibility and minimal average crosswind of 3 knots. January, November, and December represent the most consistent VFR months for flight operations. Pilots should anticipate predictable wind patterns and generally clear approach conditions based on historical meteorological data.

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.