Swimming in Portrush in august 2025: Average sea temperature in august and tide times in august 2025

Average sea temperature in Portrush in august 2025.

In august, according to seasonal norms, the sea temperature in Portrush is:

Minimum: 56°F

Average: 58°F

Maximum: 60°F

Other useful seasonal weather averages in august:

  • Outside temperature: 55°F to 61°F
  • Most common weather: "Moderate rain at times"
  • The wind blows at 6.8mph
  • It rains a total of 5.9in, over 10 day(s).

Should we swim in Portrush in august?

No... The water temperature in Portrush in august is freezing

You won't be able to swim in Portrush in august! The water temperature is freezing, reaching as low as 56°F (and only 60°F at best)! Our advice: if you are going to Portrush this month, plan to sightsee and forget the beach!

Note also that in august, the climate is tolerable with an average outside temperature of 58°F, 5.9in of precipitation (over 10 days) and 91.15 % humidity.

Water and normal seasonal temperatures in Portrush in august

August
Average sea temperature 58°F
Minimum sea temperature 56°F
Maximum sea temperature 60°F
Average outside temperature 59°F
Maximum outside temperature 63°F
Minimum outside temperature 56°F
Wind speed 14.3mph
Wind temperature 52°F
Precipitation 5.9in
Number of days of rain 10 jour(s)
(33%)
Humidity 92%
Visibility in kilometers 8.99km
Cloud cover 59%
Our opinion freezing swimming

Chart of the tides in august 2025

Tide times in august 2025 in Portrush

Swim elsewhere in Northern Ireland in august

City Average T° Max. T° Our opinion
Belfast in august58°F59°Ffreezing swimming
Derry (Londonderry) in august59°F61°Ffreezing swimming
Portstewart in august58°F60°Ffreezing swimming

Swim in Northern Ireland in august: sea temperature by city

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