― WIND · CO. TYRONE · NORTHERN IRELAND

Wind forecast Sion Mills today

Now 18 km/h SSW, gusts 34 km/h (11 mph, gusts 21 mph) at Sion Mills, Co. Tyrone. That is Beaufort force 3, a gentle breeze, and the wind is steady over the next six hours. Modelled for Sun 14:30 Irish time.

Wind in Sion Mills right now

WIND AT 10 M18 km/h11 mphfrom the SSW (201°)
GUST AT 10 M34 km/h21 mphhighest short burst the model expects this hour
WIND AT 80 M31 km/h19 mphtypical turbine hub height range
WIND AT 120 M35 km/h22 mphupper rotor height

WINDIEST HOUR TODAY12:00: 18 km/h (11 mph) from the SSW, gusting 34 km/h (21 mph).

NEAREST STATION OBSERVATIONDerry/City Airport (EGAE, 35 km away): 28 km/h (17 mph) from the SW. Measured at 14:20, 14 minutes old when this page was built.

Meteogram and wind rose for Sion Mills

Meteogram Sion Mills
CHART LOADINGmeteogramReading Sion Mills…

The next days at Sion Mills: speed, gust and direction.

Wind rose Sion Mills
CHART LOADINGwind_roseReading Sion Mills…

How often the wind blows from each direction at Sion Mills, from reanalysis.

Next 48 hours, hour by hour

Mean wind through the next 48 hours runs between 1 and 19 km/h (1 to 12 mph), mostly from the SSW. The strongest gust is 36 km/h (22 mph) at Mon 01:00. Speeds are in km/h with miles per hour underneath. Direction is where the wind comes from.

TimeFromWind km/hGust km/h80 m km/h
Sun 14:00 SSW1811 mph3421 mph3119 mph
Sun 15:00 SSW1811 mph3421 mph3119 mph
Sun 16:00 SSW1811 mph3421 mph3220 mph
Sun 17:00 SSW1610 mph3019 mph2918 mph
Sun 18:00 SSW1711 mph3220 mph3119 mph
Sun 19:00 SSW1711 mph3220 mph3019 mph
Sun 20:00 SSW149 mph2817 mph2717 mph
Sun 21:00 SSW149 mph2717 mph2616 mph
Sun 22:00 SSW149 mph2717 mph2717 mph
Sun 23:00 SSW149 mph2817 mph2717 mph
Mon 00:00 SW1610 mph3119 mph3119 mph
Mon 01:00 SW1912 mph3622 mph3421 mph
Mon 02:00 SSW159 mph2918 mph2817 mph
Mon 03:00 SSW138 mph2516 mph2516 mph
Mon 04:00 SSW138 mph2516 mph2516 mph
Mon 05:00 SW1711 mph3321 mph3220 mph
Mon 06:00 SW96 mph1811 mph2113 mph
Mon 07:00 WSW149 mph2717 mph2918 mph
Mon 08:00 SW149 mph2817 mph2918 mph
Mon 09:00 SW149 mph2717 mph2817 mph
Mon 10:00 SW1610 mph3119 mph2918 mph
Mon 11:00 SW1610 mph3019 mph2918 mph
Mon 12:00 SW138 mph2516 mph2314 mph
Mon 13:00 WSW1610 mph3119 mph3019 mph
Mon 14:00 WSW1711 mph3119 mph2918 mph
Mon 15:00 WNW127 mph2314 mph2113 mph
Mon 16:00 NW127 mph2314 mph2012 mph
Mon 17:00 WNW74 mph149 mph127 mph
Mon 18:00 NW42 mph85 mph74 mph
Mon 19:00 WNW53 mph106 mph117 mph
Mon 20:00 W42 mph85 mph96 mph
Mon 21:00 WNW42 mph96 mph117 mph
Mon 22:00 WSW42 mph74 mph106 mph
Mon 23:00 WNW74 mph138 mph149 mph
Tue 00:00 W42 mph85 mph106 mph
Tue 01:00 SSW32 mph74 mph96 mph
Tue 02:00 SE21 mph42 mph42 mph
Tue 03:00 S32 mph64 mph85 mph
Tue 04:00 S42 mph85 mph96 mph
Tue 05:00 SE32 mph74 mph42 mph
Tue 06:00 SSW32 mph74 mph85 mph
Tue 07:00 WSW21 mph53 mph85 mph
Tue 08:00 SSE32 mph64 mph64 mph
Tue 09:00 SSE32 mph64 mph42 mph
Tue 10:00 SSW11 mph42 mph32 mph
Tue 11:00 WNW32 mph85 mph53 mph
Tue 12:00 NNW85 mph1610 mph127 mph
Tue 13:00 NW85 mph1811 mph138 mph

Seven-day gust outlook

The windiest day of the week is Fri 9/10 with gusts to 46 km/h (29 mph). The calmest is Tue 6/10, gusts to 25 km/h (16 mph). Later days are less certain than the first two: the further out, the more the models can disagree.

DayMax gust km/hMax wind km/hMostly from
Sun 4/103421 mph1811 mph S
Mon 5/103622 mph1912 mph WSW
Tue 6/102516 mph138 mph WNW
Wed 7/104125 mph2113 mph W
Thu 8/104528 mph2516 mph SSW
Fri 9/104629 mph2516 mph WSW
Sat 10/104629 mph2516 mph W

What the wind does in Sion Mills

Sion Mills is situated in County Tyrone, an inland county in Ulster. The wind patterns here are influenced by its distance from the coast, approximately 23 km. While not directly exposed to the Atlantic, the county experiences the effects of frontal systems crossing Ireland, particularly in winter and early spring. Mean wind speeds at 10 metres in County Tyrone are roughly 3.5 to 5.5 metres per second, with higher speeds expected on exposed hills elsewhere in the county. Gusts, which are sudden, brief increases in wind speed, will always exceed the mean wind speed and can be significantly stronger, especially in open areas. The prevailing wind direction across County Tyrone is from the south-west.

Seasonal pattern

The seasonal wind patterns in Sion Mills generally follow those of County Tyrone. The county experiences its calmest periods in summer and autumn. The windiest spells are typically observed in winter and early spring, when frontal systems associated with Atlantic depressions frequently cross Ireland. During these times, stronger winds and more significant gusts are common. While the county is inland, the general atmospheric conditions across Ireland mean that westerly winds are a dominant feature throughout the year. Localised effects can modify these patterns, but the broader seasonal trends are consistent with an inland location in Northern Ireland.

Exposure and shelter

Sion Mills is located in an inland part of County Tyrone, which means it is generally less exposed than coastal areas. The county's wind climate notes describe it as an inland county of Mid-Ulster. Terrain can significantly affect wind flow; hills and buildings can provide shelter on their lee side, reducing wind speeds. Conversely, wind can be funnelled and accelerated through gaps or between structures. While the Sperrin Mountains are in the north of the county, and there are open uplands and moorland elsewhere, the immediate exposure in Sion Mills will depend on its specific topography and local built environment. Gusts tend to be strongest in open bogland and on hills, as noted for the county.

Local uses of the wind forecast

Understanding wind patterns is important for several sectors in and around Sion Mills. For the agri-food sector and general farming activities, wind forecasts are crucial for planning tasks such as spraying and silage timing, as strong winds can affect application and drying. The manufacturing sector may also consider wind conditions for certain operations, particularly those involving outdoor work or material handling. Quarrying, another sector in the county, can be impacted by wind for dust management and operational safety. The growing wind energy sector, with Bessy Bell Wind Farm approximately 17 km away, relies heavily on accurate wind data for turbine operation and maintenance. Additionally, general outdoor activities like walking can be made more comfortable and safer with an awareness of wind strength and direction.

Near Sion Mills

Sion Mills is in Co. Tyrone, one of 13 towns we publish for the county. The nearest observing stations are City of Derry Airport EGAE (METAR) (35 km), Finner (59 km) and Donegal Airport EIDL (METAR) (62 km). The closest wind farm in our guide is Bessy Bell Wind Farm, about 17 km away.

Nearest spots

Questions about wind in Sion Mills

When is it windiest in Sion Mills?

Based on county-level patterns for Tyrone, Sion Mills is generally windiest in winter and early spring, when frontal systems from the Atlantic frequently cross Ireland. Summer and autumn tend to be calmer.

Which direction brings the strongest gusts to Sion Mills?

The dominant wind direction across County Tyrone is from the south-west. Strongest gusts are often associated with these prevailing winds, particularly during active weather systems, and can be influenced by local terrain.

How can I get the nearest wind measurement to Sion Mills?

The nearest observing stations providing measured wind data are City of Derry Airport (METAR) at approximately 35 km, and Finner at about 59 km. Donegal Airport (METAR) is also available at 62 km.

Go deeper

Set your own limit and watch the odds at the live instrument for Sion Mills, or read how the numbers above are made.

Measurement · how the environment affects wind dataSiting and exposure: why location changes the readingWind measurements are highly sensitive to their immediate surroundings. Obstacles, terrain, and proximity to the coast all influence observed wind speeds and directions, making careful siting crucial for representative data. The instrument accounts for these factors in its data presentation.Read Fundamentals · where the ground meets the windFriction and the atmospheric boundary layerThe atmospheric boundary layer is the lowest part of the atmosphere, directly influenced by the Earth's surface. Within this layer, friction slows and turns the wind, creating shear and turbulence that are critical for surface operations.Read Fundamentals · the physics behind every numberHow wind works: pressure, rotation, friction and heightWind is air moving from high to low pressure, bent by the Earth's rotation, slowed and roughened by the ground, and different at every height. Each of those four facts shows up in the numbers you read on the instrument.Read Reading our instruments · the ratio of gust to mean windGust factor: how much stronger are the gusts?The gust factor quantifies the relationship between the peak wind speed (gust) and the average wind speed (mean). It is a critical metric for understanding the true forces acting on structures and equipment, as gusts often dictate operational limits and safety margins. This article explores its typical ranges,…Read Forecasting & models · understanding the hourly traceReading a meteogram: your hourly forecast at a glanceA meteogram displays an hourly forecast of key weather parameters for a specific location, typically including wind speed, gust, direction, pressure, and precipitation. Understanding its components allows for a quick assessment of upcoming conditions and potential changes.Read

Forecast: modelled wind from Open-Meteo (CC BY 4.0, underlying ICON, GFS and ECMWF model data), not a measurement at a site. Observation: airport METAR or buoy via aviationweather.gov and NDBC where one reports within 90 km. Heights are metres above ground. Missing values are UNKNOWN and never filled with zero. Last built 14:34 Irish time. Your threshold, your procedure, your call.