The Open Championship has produced challenging weather over its storied history, but what does the forecast look like for Royal Portrush over the next week?
The likes of Masters champion Rory McIlroy and PGA Championship winner Scottie Scheffler will be battling for the Claret Jug, while this year’s other major winner J.J. Spaun, plus Bryson DeChambeau and Jon Rahm, will be among the favourites trying to become Champion Golfer of the Year.
Will the weather be kind to players, spectators and volunteers at the 2025 Open Championship? Let’s take a look at the weather for this week’s edition of the event in Northern Ireland…
British Open Weather Forecast: The week before
Royal Portrush was the beneficiary of glorious weather in the week before The Open. Saturday, July 12 had a forecast of 27 degrees Celsius, which translates to over 80 degrees Fahrenheit.
There was little rain in the week before The Open. However, these were the days leading up to The Open. Over 20 degrees and no rain might’ve been the forecast, but what about now?

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The Open Weather Forecast 2025
There were showers in the forecast for Monday and Tuesday of tournament week, but the warmth still hovered around 20 degrees Celsius, which is 68 degrees Fahrenheit.
Wednesday, July 16 is dry with sunny periods. Wednesday should have temperatures of 20 degrees Celsius again. There will probably be rain in the first round, with wind gusts of up to 39 km/h.
There is well more than a 50% chance of rain on day two in County Antrim, so says the Accuweather forecast. ‘Broken intervals; a few morning showers followed by occasional rain and drizzle in the afternoon’ is the forecast here, and there is due to be clouds and rain in round three on Saturday, July 19, too.
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The final day of The Open currently has a dry and sunny forecast. 20 degrees is predicted again.
Royal Portrush weather in July
The weather on the Causeway Coast of Northern Ireland in July has been what you might expect in 2025. There have been lows of 15 degrees Celsius in early July but, as we will see at The Open and in the week before, the warmth could tip over 20 degrees. The average high is about 18 degrees, which is 64 degrees Fahrenheit.
Sunrise and Sunset
The average summer’s day will see around 17 hours of daylight. At this time of year, sunrise in Portrush is around 5 am and sunset is approximately 10 pm.
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