It has been a glum day in Singapore, where in the city’s Marina Bay area the fifteenth round of the 2010 world championship will be held this weekend.

The paddock of the street circuit is currently wet, and there have been black clouds overhead, amid reports bad weather is forecast for most days of the grand prix event.

That will be a concern for the teams and drivers, who are worried that rain could produce reflections from puddles and glimmering water droplets under the bright trackside lights.

“I think rain would be really challenging,” said Nico Rosberg, who arrived in Singapore at the weekend.

But the majority of Singapore’s rain at this time of year is reportedly falling during daylight hours, while the track action is scheduled either in the evening or after sunset to suit the bulk European television audience.

Another concern is the city’s high humidity conditions.

“Even though the race is at night it’s still very humid, which makes it difficult for the drivers to stay cool,” explains Formula Medicine doctor Riccardo Ceccarelli.