RAF Ascension Island
Daylight today(Aug 31, 2026, local time)
About 11h 57m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About RAF Ascension Island
RAF Ascension Island, also known as Wideawake Airfield or Ascension Island Auxiliary Field, is a military airfield and facility located on Ascension Island in the Atlantic Ocean. The airfield is jointly operated by the Royal Air Force (RAF) and the United States Space Force (USSF). Under the terms of an international agreement between the UK and US governments, only state aircraft are authorised to land at Ascension, with the sole exception being civil aviation between Ascension and Saint Helena.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
Live weather
FHAWNOTAMs
FHAWReference only — not an official briefing. Always obtain a certified briefing (e.g. 1800wxbrief.com / your AIS) before flight.
NOTAM data via the FAA NOTAM system.
Live departures & arrivals
Flight data by AeroDataBox. Times are estimates — not for navigation; confirm with the airline.
Where you can fly from here
Current scheduled routes & daily frequency by AeroDataBox. Approximate — confirm bookable schedules with the airline.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (1)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 13 / 31 | 10,019 ft / 3,054 m | 150 ft | Asp | Lighted | Open |
Radio frequencies (4)
| Type | Description | Frequency |
|---|---|---|
| A/G | RAF HAVENS HF | 1124.700 MHz |
| ACC | ATLANTICO FIR | 1795.500 MHz |
| RDO | ASCENSION RDO | 1078.000 MHz |
| TWR | WIDEAWAKE TWR | 126.200 MHz |
Navaids(2)
Weather by month
Share of VFR / marginal-VFR / IFR / low-IFR conditions by month over the last 8 years, with the prevailing wind and typical density altitude. Historical climatology — not a forecast.
Prevailing wind: SE (from about 135°), on 63% of observations, averaging 13 kt.
| Month | VFR / MVFR / IFR / LIFR | % VFR | Median DA |
|---|---|---|---|
| Jan | 90% | 1,625 ft | |
| Feb | 92% | 1,781 ft | |
| Mar | 95% | 1,855 ft | |
| Apr | 89% | 1,880 ft | |
| May | 89% | 1,707 ft | |
| Jun | 90% | 1,551 ft | |
| Jul | 89% | 1,396 ft | |
| Aug | 93% | 1,277 ft | |
| Sep | 86% | 1,269 ft | |
| Oct | 80% | 1,314 ft | |
| Nov | 70% | 1,425 ft | |
| Dec | 76% | 1,499 ft |
VFR MVFR IFR LIFR· density altitude ranges ~1,269–1,880 ft through the year· Source: NWS/IEM ASOS archive.
Frequently asked questions
What is the ICAO code for RAF Ascension Island?
The ICAO code for RAF Ascension Island is FHAW, and its IATA code is ASI.
Where is RAF Ascension Island located?
RAF Ascension Island is medium airport located in Cat Hill, Saint Helena, Ascension and Tristan da Cunha, at an elevation of 278 ft (85 m).
How many runways does RAF Ascension Island have?
RAF Ascension Island has 1 runway, the longest being 10,019 ft / 3,054 m.
What time zone is RAF Ascension Island in?
RAF Ascension Island is in the Atlantic/St Helena time zone (UTC).
What is the magnetic variation at RAF Ascension Island?
The magnetic variation (declination) at RAF Ascension Island is approximately 13.5° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
Is the information on this page suitable for flight planning?
No. RAF Ascension Island data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.