Scotland’s railway is preparing for a week of unusually high temperatures, with forecasts suggesting highs of up to 32°C—close to a potential June record. While the most severe heat warnings are focused further south, the impact on rail operations north of the border is already being carefully managed.
The Met Office has indicated that temperatures could surpass 30°C by Thursday, followed by a risk of thunderstorms bringing lightning, heavy rainfall and strong winds later in the day. Although Scotland is not currently under a Red extreme heat warning like parts of England and Wales, the conditions are still expected to test infrastructure resilience.
Infrastructure Under Pressure
Hot weather poses unique challenges for rail networks, particularly when it comes to track and overhead line performance. Steel rails exposed to prolonged sunlight can reach temperatures of around 50°C, increasing the risk of expansion and track distortion. In extreme cases, this can lead to buckling, requiring operators to implement precautionary measures.
Similarly, overhead power lines can expand and lose tension in high temperatures, affecting the reliability of electrified routes.
To mitigate these risks, Network Rail Scotland has mobilised meteorologists and engineering teams to closely monitor conditions across the network. Operational responses may include the introduction of temporary speed restrictions designed to minimise stress on track and power systems.
Engineers have also been strategically deployed across the country to respond rapidly to any developing issues, helping to reduce disruption for passengers.
Passenger Advice: Plan Ahead
With services potentially subject to change, passengers are being urged to plan ahead and allow extra time for their journeys. Staying hydrated and preparing for warmer travel conditions are also recommended to improve comfort and safety.
Ross Moran, route director at Network Rail Scotland, said:
“We know hot weather can sometimes affect how the railway runs. That’s why our teams are keeping a close eye on conditions and carrying out extra checks across the network to keep services moving.
“We’re not expecting the same extreme temperatures as elsewhere in the UK, but we’re prepared for warmer weather and ready to act if needed. We’d encourage passengers to check their journey before travelling and take care in the heat.”
Phil Campbell, ScotRail Customer Operations Director, added:
“We’re working closely with our colleagues at Network rail to support customers as the temperatures rise across Scotland this week."
“Hot weather can occasionally impact how the railway operates, so we’re encouraging customer to check their journey before travelling, leave a little extra time for their trip, and take simple steps such as carrying water and staying hydrated.
“By taking a few precautions and planning ahead, customers can travel safely and comfortably throughout the summer months, whatever the weather brings.”
Engineering Measures to Combat Heat
Network Rail continues to invest in proactive strategies to protect infrastructure during high temperatures. Key measures include:
- Painting selected rail sections white to reflect sunlight, reducing temperatures by 5–10°C
- Installing continuously welded rail to minimise expansion-related stress
- Maintaining expansion gaps on older track sections
- Deploying advanced temperature monitoring systems to provide early warnings
- Using reinforced concrete track beds in high-risk locations to prevent buckling
These interventions play a vital role in maintaining safe and reliable operations during increasingly frequent extreme weather events.
Image credit: Network Rail
