The next day when I rolled up the shutters in my room, I was a bit shocked to see that the perfect conditions had gone, and rain was whipping past my window. Conditions stayed appalling throughout the day. At 4pm I was supposed to meet my support astronomer at the Nordic Optical Telescope, so I could learn how to use it. I set off, but the rain was utterly torrential, and after a few minutes of driving at walking pace and not being able to see beyond the end of the bonnet, I turned back.
The first night looked like being completely lost, but I decided to stay up until dawn anyway. A few people on other telescopes also optimistically stayed up; most went to bed. I kept an eye on the weather station data from within the comfort of the Residencia.
At 5am there was drama. Conditions were suddenly dramatically improving, and observers were hurrying to their cars to get to the telescope. I stayed where I was: the NOT is the highest telescope on the island, and its weather sensors were still telling me it was too humid and too windy to open the dome. About twenty minutes later everyone who had rushed out was forlornly heading back anyway. It had just been a very temporary reprieve, and the monsoon was back.