Iran · elevation 3962 ft AMSL
· 35.6892, 51.3144
Mehrabad International Airport (Tehran) is an airport with the ICAO code OIII and the IATA code THR. Country: Iran. Nearest settlement listed in the database: Tehran. OurAirports classifies it as a large airport. Its ICAO code starts with the OI prefix, which marks airports in Iran. The four-letter code OIII is used in flight operations and weather reports, while the three-letter IATA code THR is used for ticketing and baggage handling. The airport reference point sits at 35°41'21"N, 51°18'52"E, at an elevation of 3,962 ft (1,208 m) above sea level. The applicable time zone is Asia/Tehran.
Aerial imagery showing the runway and apron layout - the zoom is matched to the longest runway.
| Threshold | Course | Length | Width | Surface |
|---|---|---|---|---|
| 11L | 110° | 3,989 m (13,087 ft) | 45 m (148 ft) | asphalt |
| 29R | 290° | |||
| 11R | 110° | 4,041 m (13,258 ft) | 60 m (197 ft) | asphalt |
| 29L | 290° |
The course is derived from the runway designator (number × 10), not from a survey - the actual magnetic bearing can differ by a few degrees.
Declared distances (TORA, TODA, ASDA, LDA) are published in the national AIP - they are not part of this table.
What the METAR reports from OIII for 2023-2025 show - counted hour by hour.
We computed these statistics from 25,888 METAR reports issued by OIII in 2023-2025. VFR conditions prevailed 74% of the time, MVFR 19% and IFR or LIFR 7%. Best month for VFR flying: September (93% of hours VFR). Most IFR and LIFR hours: January (24%).
Through the day, IFR or LIFR conditions are most frequent around 08:00 UTC (10% of reports at that hour) and least frequent around 03:00 UTC (4%).
Fog (FG) was reported on 1.7 days a year on average, most often in February. Thunderstorms (TS) occurred on 21 days a year on average, and snowfall on 7.
The wind most often blows from W (270°) - 16% of reports. Calm (0 kt) made up 12% of reports, and gusts of 25 kt or more appeared in <1%. Warmest month: July (average high 37.4 °C); coldest: February (average low 2.3 °C).
Day counts are for the selected period (for all years - the yearly average).
The top of each bar is the average daily high, the bottom the average daily low (usually around dawn), in °C.
Most often: W - 16% of reports. Each petal shows the direction the wind blows from (as in METAR) - the longer it is, the more often. Colour shows wind speed.
| Month | Avg high °C | Avg low °C | VFR | IFR/LIFR | Fog days | Thunderstorm days | Snow days |
|---|---|---|---|---|---|---|---|
| January | 9.6 | 2.4 | 42% | 24% | 0 | 0.3 | 1.7 |
| February | 10.2 | 2.3 | 60% | 13% | 1.7 | 0 | 4.3 |
| March | 17.5 | 8.7 | 81% | 2% | 0 | 2.3 | 0 |
| April | 24.6 | 14.4 | 92% | 1% | 0 | 2.7 | 0 |
| May | 29.4 | 18.4 | 91% | 1% | 0 | 5.7 | 0 |
| June | 34.2 | 22.4 | 91% | <1% | 0 | 5 | 0 |
| July | 37.4 | 25.8 | 86% | 1% | 0 | 1 | 0 |
| August | 36.5 | 26.0 | 92% | <1% | 0 | 0.3 | 0 |
| September | 31.4 | 21.1 | 93% | 1% | 0 | 1 | 0 |
| October | 25.4 | 15.6 | 87% | <1% | 0 | 1 | 0 |
| November | 18.4 | 9.9 | 42% | 14% | 0 | 1.3 | 0 |
| December | 11.7 | 4.3 | 35% | 23% | 0 | 0.3 | 1 |
Temperatures are averages of daily highs and lows. Day counts are the average per month over the period.
According to OurAirports data (compiled from AIP and FAA sources), Mehrabad International Airport (Tehran) has 2 runways: 11L/29R - 3,989 m long (13,087 ft), 45 m wide, asphalt surface; 11R/29L - 4,041 m long (13,258 ft), 60 m wide, asphalt surface.
The longest of them is 11R/29L, at 4,041 m.
The thresholds are oriented as follows: 11L/29R on 110° and 290° magnetic, 11R/29L on 110° and 290° magnetic. A threshold designator is its magnetic heading divided by ten (ICAO Annex 14), so the runway axis can be read straight off the numbers.
For the 11L/29R axis, wind from the south (around 200°) or from the north (around 20°) blows perpendicular to the runway and produces the largest crosswind component. Wind from around 110° or 290° acts along the runway, as a headwind or a tailwind. The decoder on this page computes those components automatically from the current METAR.
Weather reports for Mehrabad International Airport (Tehran) are published under the ICAO code OIII. A METAR is an observation of current conditions, usually issued every 30 or 60 minutes; a TAF is a forecast for the airport area, typically covering 9 to 30 hours.
The decoder breaks the OIII report down into its parts: wind direction and speed including gusts and variability, visibility (including CAVOK and directional minimum visibility), weather phenomena by WMO code, cloud layers with their bases, temperature and dew point, QNH pressure, and the resulting flight category - VFR, MVFR, IFR or LIFR - using FAA thresholds.
Not every airport issues its own reports; many smaller airfields have no weather station. If no current data is available for OIII, check the nearby airports listed below.
Reports always use UTC (the Z suffix). The Asia/Tehran zone stays at GMT+03:30 year-round, so converting to local time is always the same shift.
The closest airports in the database, measured in a straight line from the reference point, are Doshan Tappeh Air Base (Tehran) (OIID, 15 km), Shahid Aryafar Airport (Firuzabad) (OIIR, 25 km), Imam Khomeini International Airport (Tehran) (OIIE, 34 km). When no report is available for OIII, they usually give the best approximation of conditions in the area.
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Check VFR MapThe METAR archive for OIII goes back to 31/10/1943. Pick a date and see every observation from that day.
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