Short sleeves arrive before the heat does

There comes a morning in the first days of May when the walk to the station feels different, and the difference is not the sun but the choice of clothing. One morning the jacket still feels necessary, a sensible layer against a wind that has not quite given up on spring. The next morning it feels like a boast, carrying warmth no one needs, and it stays on the hook by the door. The weather has not formally become summer. People have decided for it, and the thermometer is left to catch up.

This is the particular small economy of early May, and it is run almost entirely on instinct rather than on the forecast. The high might still be in the low twenties, which by the standards of July is nothing. But the light has thickened, the shadows have shortened, and the air on the skin at midday carries a dry promise that rain or a cold front cannot quite revoke. One puts on a short-sleeved shirt on the strength of that promise, and is usually right, and on the mornings after one is wrong one walks around mildly indignant at one’s own optimism. The city tolerates this. It is, after all, the season’s first informal ritual.

The people on the street split into two camps in these weeks, and the split is telling. Some keep their layers on well into June, cardigan over shirt, jacket folded over an arm, watching the bare-armed majority with the wariness of someone who has been burned by a late cold snap before. Others shed everything the first warm day permits, as if clinging to winter were a kind of betrayal. Neither side is quite right, and both are prepared to defend their position at length to anyone wearing the wrong amount of clothing. This is one of the small, unspoken moral vocabularies that a city develops around its own weather.

What is quietly remarkable is how little ceremony the shift involves. Nobody announces the move to summer wardrobes. There is no switch thrown, no ceremony, simply a gradual thinning out: the long sleeves give way to rolled cuffs, then to no sleeves at all, and the bulky coats in the wardrobe migrate to the top shelf without anyone being quite sure when. The body keeps a calendar the wall calendar does not. By the time the meteorological season formally turns, most people have been living in it for weeks, sunburnt at the backs of the arms and slightly smug about it.

There is a mild, unearned optimism to it. Dressing for summer before the weather has arrived is a small act of faith that the warm season will in fact show up this year, that the grey stretch is genuinely over, that the year’s long middle is on the way. It is the same instinct that opens the windows wide on the first dry afternoon, that drags the balcony chair into the sun, that buys the first cold drink on a day that does not really justify it. The city is, for a few weeks, dressing ahead of itself.

Then one evening the air stays warm long after dark, and the choice stops being a gamble and simply becomes the way things are. The jacket stays on its hook. The forecast is finally caught up. And the long business of summer, which started as a rumour and a short sleeve, is under way for real.