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Weather in Portstewart today: the honest forecast

Portstewart

Clear night. Stars are out, frost is comin’.

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5°C

Clear Clear sky

Feels like
3°C
Wind
10 km/h
Humidity
92%
Rainfall
0 mm

Sunrise 08:02 Sunset 18:21

Air quality Good

Updated 00:42 on 18/10/2026. Don’t be expecting miracles.

Tomorrow in Portstewart

Monday 19/10/2026

Met Éireann says one thing, the sky says another. Trust the sky.

Clouds, high of 12°C, low of 6°C. 0 mm of rain, 0% chance. Wind up to 18 km/h.

The day after in Portstewart

Tuesday 20/10/2026

Dull, grey and mild. The national colours.

Clouds, high of 12°C, low of 9°C. 0 mm of rain, 0% chance. Wind up to 23 km/h.

Honest Weather’s verdicts for Portstewart, tomorrow

  • Washing10/10 for washingEvery sheet in the house. Go.
  • Barbecue8/10 for barbecueA solid barbecue day by Irish standards.
  • A walk10/10 for a walkCracking walk weather. Don’t waste it.

Verdicts by Honest Weather · honestweather.ie

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Next 24 hours in Portstewart

Mild enough to leave the coat at home. Brave. Foolish, but brave.

In 3-hour steps.

  1. 01:00 5° 0% chance of rain
  2. 04:00 5° 0% chance of rain
  3. 07:00 5° 0% chance of rain
  4. 10:00 7° 0% chance of rain
  5. 13:00 11° 0% chance of rain
  6. 16:00 11° 0% chance of rain
  7. 19:00 9° 0% chance of rain
  8. 22:00 7° 0% chance of rain

The days ahead in Portstewart

  1. Mon 19/10 Clouds 12° / 6° 0 mm, 0% Grey and flat. Like a Monday in the weather.
  2. Tue 20/10 Clouds 12° / 9° 0 mm, 0% Grey as your man’s personality.
  3. Wed 21/10 Rain 10° / 7° 2 mm, 100% Rainin’ sideways. Your umbrella’s only a decoration.
  4. Thu 22/10 Rain 11° / 7° 0.7 mm, 37% Barely rainin’, but ya’ll still be soaked by the time ya get there.

About the weather in Portstewart

Portstewart is in County Londonderry, in the north. It is a mix of exposed coast and sheltered inland valleys, so the weather can vary a lot over a short distance.

Portstewart is in County Londonderry, at about 55.19°N, 6.72°W. The closest places we cover are Portrush (5 km), Coleraine (7 km), Ballymoney (19 km).

Across Ireland, spring is cool and bright with showers, summer highs are typically in the high teens with long evenings, autumn is the wettest and windiest stretch as the Atlantic fronts return, and winter is mild for the latitude with frost on clear nights. Rain can arrive in any month.

Quick answers for Portstewart

What is the weather in Portstewart right now?
It is 5°C in Portstewart with clear sky, feeling like 3°C, with wind at 10 km/h.
Will it rain in Portstewart tomorrow?
Rain is unlikely tomorrow in Portstewart (a 0% chance).
What will the temperature be in Portstewart tomorrow?
A high of 12°C and a low of 6°C, with wind around 18 km/h.
What time is sunset in Portstewart today?
Sunrise is at 08:02 and sunset at 18:21.

Weather nearby

Beaches, hills and venues nearby

All weather in County Londonderry