Why do we say “Red sky at night, shepherd’s delight”?
Have you ever looked up at a beautiful red sky in the evening and remembered the old saying, “Red sky at night, shepherd’s delight”? It’s a phrase many of us have grown up with, but do we know where it comes from, and more importantly, how accurate it really is?
Here at CPRE Norfolk, we are curious about how the natural world and age-old wisdom come together, especially when it connects us so deeply to our landscape.
The Origins of the Saying
“Red sky at night, shepherd’s delight. Red sky in the morning, shepherd’s warning.” This old saying has been passed down through generations, thought to have originated in ancient times. It can be traced back to the Bible, specifically to the Gospel of Matthew, where a similar phrase appears, showing that people have been using this weather prediction technique for centuries.
But it’s not just a saying, there’s some science behind it. The colour of the sky is affected by the scattering of sunlight by particles in the atmosphere, and these changes can offer clues about the weather to come.
The Science Behind It
A red sky at night occurs when the setting sun sends its light through a large amount of dust particles or moisture in the atmosphere. This usually indicates that high pressure is on its way, meaning clear skies and dry weather are likely to follow. In Norfolk, where agriculture plays such a significant role in our landscapes, farmers and shepherds would be glad at the prospect of a clear and dry day ahead, knowing their livestock and crops are less likely to be affected by sudden changes in weather.
In contrast, a red sky in the morning often signals that the weather is going to take a turn for the worse. When the sky appears red as the sun rises, it typically means the high-pressure system has passed, and a low-pressure system, associated with bad weather, may be approaching from the west. Shepherds, and anyone working the land, would take heed of this early warning to prepare for rain or storms.
How It Relates to Norfolk’s Landscape

Here in Norfolk, a predominantly rural county, we’re fortunate to experience big, open skies that allow us to observe these changes clearly. The flatness of our landscape gives us an unimpeded view of the sky, making these weather signs all the more visible. It’s part of what makes living here so special, being able to witness nature’s cues and feel connected to the the land.
For centuries, Norfolk’s farmers, sailors, and shepherds have relied on traditional weather wisdom like this to make decisions about planting, harvesting, and caring for animals. While we now have more advanced weather forecasting tools, these old sayings often hold true. In an era where we are often separated from nature, observing these signs in the sky reminds us that the countryside and its weather are deeply intertwined.
How Understanding Weather Patterns Can Help Us Today
While we may not be shepherds ourselves, the phrase “red sky at night” still has relevance in modern times. Being attuned to changes in the weather is not just about planning your day – it can deepen our connection to nature and help us better appreciate the environmental factors at play.
At CPRE Norfolk, we believe in celebrating these links between nature, tradition, and science. Understanding weather patterns is an integral part of caring for the countryside, whether it’s monitoring how extreme weather affects local wildlife or ensuring our green spaces can withstand climate change. By continuing to observe nature’s signs, we not only honour the past but prepare for the future.
How You Can Get Involved
At CPRE Norfolk, we’re committed to protecting the landscapes that make these experiences possible. By getting involved – whether through volunteering, supporting our campaigns, or simply sharing your appreciation for our beautiful countryside – you can help us continue our vital work.
Let us know what the Norfolk skies have been telling you lately – share your photos and experiences with us, and together, we can keep these traditions alive while working to preserve our landscapes for future generations.
