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Portstewart

  • Cloudy 11 °C 3 °C
  • Cloudy 6 °C 6 °C
  • Cloudy 12 °C 8 °C
  • Cloudy 10 °C 6 °C
  • Cloudy 8 °C 5 °C
  • Cloudy 9 °C 8 °C
  • Overcast 11 °C 6 °C
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Sunrise: 08:48 Sunset: 15:57 Moon phase: New Air pollution: 2
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Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
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Sunrise: 08:49 Sunset: 15:58 Moon phase: New Air pollution: 2
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Sunrise: 08:50 Sunset: 15:58 Moon phase: New Air pollution: 2
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Sunrise: 08:51 Sunset: 15:59 Moon phase: Waxing crescent Air pollution: 2
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Sunrise: 08:51 Sunset: 15:59 Moon phase: Waxing crescent
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SW 11 20 SW 12 20 SW 12 20 SW 14 24 SW 16 28 SW 16 29 SW 15 29 SW 14 27
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Sunrise: 08:52 Sunset: 16:00 Moon phase: Waxing crescent

Issued at:

Forecast Summary

  • Regional
  • UK 5 days
  • UK 6-30 days

Northern Ireland

Headline:

Rain clearing late morning. Dry but increasingly cloudy for afternoon.

Today:

Occasional rain at first, with some moderate outbreaks to the north and east of Lough Neagh. The rain clears from the west late morning, as the fresh winds veer northwest. Thereafter dry but higher cloud will spread from the northwest. Maximum temperature 12 °C.

Tonight:

Remaining dry with extensive higher cloud through the evening and night. Northwest winds, initially fresh across the coasts, easing and backing overnight allowing a localised rural frost to develop. Minimum temperature 0 °C.

Monday:

Dry and quite cloudy through the bulk of the day, however from late afternoon some late sunshine will spread from the west. Winds southwest freshening later. Maximum temperature 11 °C.

Outlook for Tuesday to Thursday:

Much milder than the week passed. Rather cloudy with some patchy rain Tuesday, then isolated showers and west to southwest breezes Wednesday and Thursday.

Updated: 02:49 on Sun 17 Dec 2017 GMT

UK forecast for the next 5 days

Headline:

A foggy or frosty start. Rain moving southeast. Clearer later.

Today:

A frosty start for many with slow-clearing mist and fog in the southeast. Cloud and rain across the northwest will move southeastwards to all parts with mostly dry, sunny weather following behind. Strong winds across northern Scotland will ease.

Tonight:

A dry but cold night with light winds and clear spells across most of the UK, allowing frost patches, fog, and low cloud to develop.

Monday:

A cold morning, then dry and bright day for many with light winds. Some cloud and rain in the northwest. Staying dry for many and turning foggy overnight, mainly southeast.

Outlook for Tuesday to Thursday:

Tuesday, slow-clearing fog in the southeast; otherwise mild and cloudy. A north-south split will develop thereafter: milder with patchy rain in the south; colder and brighter in the north.

Updated: 02:08 on Sun 17 Dec 2017 GMT

Outlook for the UK over the next 6-30 days

UK Outlook for Thursday 21 Dec 2017 to Saturday 30 Dec 2017:

In the run up to Christmas it is most probable that the UK should see temperatures return near to or above average for the time of year, with a north-south split developing. In northern parts of the UK the weather is likely to be changeable with strong winds and rain or showers; as well as drier, brighter interludes. Across the south of the UK it will be drier and more settled although probably rather cloudy. Any rain will only be a brief interruption and any breaks in the cloud cover could give foggy or frosty overnight conditions. Over the Christmas period the north-south split looks mostly likely to begin to break down with unsettled, often windy, conditions developing thereafter, with any snow most likely across the north of the UK.

UK Outlook for Sunday 31 Dec 2017 to Sunday 14 Jan 2018:

Through the final days of December, and perhaps the start of January, it is likely to be unsettled and often windy across much of the UK. Temperatures will be near to or below average and snow is likely, at times, especially across northern parts of the country. Through the first half of January a gradual reduction in the frequency of Atlantic westerlies seems most likely, this will be coupled with an increase in the frequency of colder and drier periods, although confidence is low at this stage. Milder, wetter, and windier spells should become more short-lived during this period with the colder and drier spells of weather bringing an increased likelihood of overnight frost and fog, as well as some snow, wintry showers, and below-average temperatures.

Updated: 02:08 on Sun 17 Dec 2017 GMT

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