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Select units of measurement for the temperature and rainfall tables (metric or imperial).

Climate in Portrush (Northern Ireland)


Average weather, temperature, rainfall, sunshine hours

Flag - Northern Ireland

Portrush, where it's located


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Climate chart - Portrush
The climate of Portrush is oceanic, with quite cold, rainy winters and mild, relatively rainy summers.
The city is located on the northern coast of Northern Ireland.

Winter, from December to February, is quite cold: temperatures are not so low, but wind and humidity can increase the sensation of cold. The sky is often cloudy, and rainfall is frequent. Sometimes, intense Atlantic depressions can cause wind storms.
Snowfalls are rare and not abundant. Usually, cold spells are not intense and do not last long. The temperature rarely drops below -5 °C (23 °F).

In spring, from March to May, the temperature slowly rises, and Atlantic fronts become a bit less frequent. In May, it is often still quite cold, especially in the first half of the month.

Summer, from June to August, is cool, with quite frequent rains.
Hot days are rare: the temperature may not reach 25 °C (77 °F) for an entire month.

Autumn, from September to November, is gray, cloudy and rainy, and with each passing week, it gets progressively colder. In November, the wind is often moderate or strong.

Portrush

Best Time


The best time to visit Portrush is the summer, from June to August, since it is the mildest of the year. The temperatures are generally good for outdoors activities, although it's better to bring an umbrella, and a sweatshirt or sweater for the evening or for cool days.

Portrush - Climate data


In Portrush, the average temperature of the coldest month (January) is of 5.7 °C, that of the warmest month (August) is of 15.5 °C. Here are the average temperatures.
Portrush - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January3.485.7
February3.28.55.9
March410.27.1
April6.112.59.3
May8.314.911.6
June10.416.913.6
July12.518.215.4
August12.618.315.5
September11.116.813.9
October813.610.8
November5.710.68.2
December3.88.86.3
Year7.513.110.3

Precipitation amounts to 975 millimeters per year: so, it is at an intermediate level. It ranges from 55 millimeters in the driest month (April) to 110 millimeters in the wettest one (November). Here is the average precipitation.
Portrush - Average precipitation
MonthRain (mm)Days
January9018
February8014
March6514
April5512
May6013
June7013
July8515
August8515
September7514
October10016
November11018
December10518
Year975181

The sea temperature ranges from 8 °C in February, March to 14.5 °C in August. Here are the average sea temperatures.
Portrush - Sea temperature
MonthTemperatures (°C)
January8.5
February8
March8
April8.5
May10
June12
July13.5
August14.5
September14
October13
November11.5">
December10
Year11

There are on average around 1440 sunshine hours per year. Here are the average hours of sunshine per day.
Portrush - Sunshine hours
MonthAverageTotal
January1.555
February2.575
March3.5115
April6.5190
May7225
June5.5165
July5160
August4.5145
September4125
October3100
November255
December140
Year41440

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