Why we pick the wrong holiday destinations
Having returned from a fortnight’s break, I wonder if we get holidays all wrong. In northern Europe, the custom is that you head south to spend time on the beach. But equally, there is such a thing as too damned hot, especially if, like me, you have a healthy dose of Celtic ancestry. To avoid this, you need to study what is called the ‘wet-bulb temperature’. This is a measure of temperature which accounts for the cooling effect of evaporation. At 100 per cent relative humidity, the wet-bulb temperature is equal to the dry-bulb temperature shown on weather forecasts. At lower humidity the wet-bulb temperature is lower, owing to evaporative
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