― WIND · CO. DOWN · NORTHERN IRELAND

Wind forecast Annahilt today

Now 20 km/h SW, gusts 37 km/h (12 mph, gusts 23 mph) at Annahilt, Co. Down. That is Beaufort force 4, a moderate breeze, and the wind is steady over the next six hours. Modelled for Sun 14:15 Irish time.

Wind in Annahilt right now

WIND AT 10 M20 km/h12 mphfrom the SW (231°)
GUST AT 10 M37 km/h23 mphhighest short burst the model expects this hour
WIND AT 80 M33 km/h21 mphtypical turbine hub height range
WIND AT 120 M35 km/h22 mphupper rotor height

WINDIEST HOUR TODAY12:00: 23 km/h (14 mph) from the SW, gusting 44 km/h (27 mph).

NEAREST STATION OBSERVATIONBelfast/Harbour Airport (EGAC, 22 km away): 20 km/h (12 mph) from the SW. Measured at 14:20, 7 minutes old when this page was built.

Meteogram and wind rose for Annahilt

Meteogram Annahilt
CHART LOADINGmeteogramReading Annahilt…

The next days at Annahilt: speed, gust and direction.

Wind rose Annahilt
CHART LOADINGwind_roseReading Annahilt…

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

Next 48 hours, hour by hour

Mean wind through the next 48 hours runs between 6 and 26 km/h (4 to 16 mph), mostly from the WSW. The strongest gust is 48 km/h (30 mph) at Mon 11:00. 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 SW2012 mph3723 mph3321 mph
Sun 15:00 SW2113 mph3924 mph3421 mph
Sun 16:00 SW2012 mph3824 mph3421 mph
Sun 17:00 SW2113 mph3924 mph3522 mph
Sun 18:00 SW2214 mph4125 mph3723 mph
Sun 19:00 SW2113 mph4025 mph3723 mph
Sun 20:00 SW2012 mph3723 mph3522 mph
Sun 21:00 SW2012 mph3824 mph3522 mph
Sun 22:00 SW2012 mph3824 mph3622 mph
Sun 23:00 SW1912 mph3622 mph3421 mph
Mon 00:00 SW1811 mph3522 mph3220 mph
Mon 01:00 SW1711 mph3220 mph3119 mph
Mon 02:00 SW1711 mph3119 mph3019 mph
Mon 03:00 WSW1912 mph3622 mph3522 mph
Mon 04:00 WSW2415 mph4528 mph4125 mph
Mon 05:00 WSW1912 mph3622 mph3622 mph
Mon 06:00 WSW1811 mph3522 mph3421 mph
Mon 07:00 WSW1912 mph3622 mph3522 mph
Mon 08:00 WSW1811 mph3321 mph3220 mph
Mon 09:00 WSW2012 mph3723 mph3622 mph
Mon 10:00 WSW2516 mph4629 mph4226 mph
Mon 11:00 WSW2616 mph4830 mph4226 mph
Mon 12:00 WSW2415 mph4427 mph3824 mph
Mon 13:00 WSW2415 mph4427 mph3924 mph
Mon 14:00 WSW2314 mph4327 mph3824 mph
Mon 15:00 WSW1711 mph3119 mph3019 mph
Mon 16:00 WSW1912 mph3622 mph3421 mph
Mon 17:00 WSW1912 mph3522 mph3220 mph
Mon 18:00 WSW138 mph2516 mph2415 mph
Mon 19:00 W127 mph2314 mph2113 mph
Mon 20:00 WNW96 mph1711 mph1610 mph
Mon 21:00 NNW74 mph149 mph127 mph
Mon 22:00 NNW64 mph127 mph127 mph
Mon 23:00 NW85 mph1610 mph1711 mph
Tue 00:00 WNW64 mph127 mph127 mph
Tue 01:00 WNW74 mph138 mph138 mph
Tue 02:00 NW106 mph1912 mph1711 mph
Tue 03:00 NW74 mph138 mph149 mph
Tue 04:00 WNW74 mph149 mph149 mph
Tue 05:00 NW96 mph1811 mph1610 mph
Tue 06:00 WNW74 mph127 mph117 mph
Tue 07:00 WNW74 mph138 mph138 mph
Tue 08:00 W74 mph138 mph149 mph
Tue 09:00 WNW85 mph149 mph117 mph
Tue 10:00 WNW106 mph1912 mph159 mph
Tue 11:00 NW96 mph1711 mph138 mph
Tue 12:00 NW85 mph159 mph117 mph
Tue 13:00 WNW85 mph159 mph117 mph

Seven-day gust outlook

The windiest day of the week is Fri 9/10 with gusts to 52 km/h (32 mph). The calmest is Tue 6/10, gusts to 19 km/h (12 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 4/104427 mph2314 mph SW
Mon 5/104830 mph2616 mph WSW
Tue 6/101912 mph106 mph WNW
Wed 7/104125 mph2214 mph WNW
Thu 8/103019 mph1610 mph WSW
Fri 9/105232 mph2817 mph WSW
Sat 10/104729 mph2616 mph W

What the wind does in Annahilt

Annahilt, a settlement with a population band of 1,000-2,000 in County Down, experiences wind patterns typical of an inland location in Ulster. The county's dominant wind direction is from the south-west. While coastal areas of County Down can see mean 10 m wind speeds of roughly 5.5-7.5 m/s, inland areas like Annahilt typically experience lower speeds, around 4-5.5 m/s, according to approximate ERA5-like data for the county. Gusts will consistently exceed the mean wind speed, particularly during periods of stronger wind. The strongest winds in the region generally occur with winter south-westerlies and north-westerlies, driven by Atlantic depressions. Annahilt is approximately 20 km from the coast, which provides some moderation compared to direct coastal exposure.

Seasonal pattern

The seasonal wind pattern in Annahilt broadly follows that of County Down and Ireland as a whole. Winter months typically bring the strongest and most frequent winds, primarily from the south-west and north-west, associated with the passage of Atlantic low-pressure systems. These systems can generate significant gusts. As the year progresses into spring and summer, the frequency and intensity of strong winds generally decrease. Lighter winds are more common during these warmer months. Summer afternoons may occasionally see the development of localised sea breezes near the coast, but due to Annahilt's inland location, this effect would be minimal or non-existent in the town itself. Autumn sees a gradual return to stronger, more unsettled conditions.

Exposure and shelter

Annahilt's inland position, approximately 20 km from the coast, means it is less exposed than coastal areas of County Down. The general terrain around the town will influence local wind patterns, with any local topography, buildings, or tree lines providing shelter or, conversely, channelling effects. Wind speeds at ground level will be lower than those measured at standard meteorological heights of 10 metres, and significantly lower than those at 80 metres or 120 metres, which are relevant for wind energy. Shelter from obstructions can reduce wind speeds, while gaps between structures or valleys can sometimes funnel wind, leading to localised increases in speed. The prevailing south-westerly winds for County Down mean that features to the south-west of Annahilt would offer shelter, while those to the north-east might be in the lee.

Local uses of the wind forecast

Understanding wind patterns is important for several activities in Annahilt. For the agri-food sector, a significant part of County Down's economy, wind forecasts are crucial for planning activities such as crop spraying and silage timing, where wind speed and direction directly impact efficiency and efficacy. Building and roofing work also relies on accurate wind information for safety and operational planning. While Annahilt is not coastal, the county's tourism sector benefits from wind data for outdoor activities elsewhere in the county. For general outdoor recreation, such as walking, awareness of wind speed and direction, including potential wind chill, is beneficial. Local sports clubs, including those playing GAA, would use forecasts to understand playing conditions.

Near Annahilt

Annahilt is in Co. Down, one of 37 towns we publish for the county. The nearest observing stations are George Best Belfast City Airport EGAC (METAR) (22 km), Belfast International Airport EGAA (METAR) (29 km) and Ballyhaise (95 km). The closest wind farm in our guide is Altahullion Wind Farm, about 80 km away.

Nearest spots

Questions about wind in Annahilt

When is Annahilt typically windiest?

Annahilt generally experiences its windiest conditions during the winter months. This is when strong south-westerly and north-westerly winds, associated with Atlantic depressions, are most frequent across County Down and the wider region. Summer months tend to be calmer with lighter winds.

Which wind direction brings the strongest gusts to Annahilt?

Based on the dominant wind patterns for County Down, the strongest gusts in Annahilt are generally associated with winds from the south-west and north-west. These are the prevailing directions for the powerful weather systems that affect Ireland, particularly during the colder seasons.

Where can I get the nearest measured wind data for Annahilt?

The nearest observing stations providing measured wind data (METARs) are George Best Belfast City Airport (EGAC), approximately 22 km away, and Belfast International Airport (EGAA), about 29 km away. These stations offer real-time observations that can provide an indication of regional wind conditions.

Go deeper

Set your own limit and watch the odds at the live instrument for Annahilt, 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 14:26 Irish time. Your threshold, your procedure, your call.