F1 2025 Singapore Grand Prix weather forecast - latest from Marina Bay

The 2025 F1 championship returns to the streets of Singapore this weekend for the Singapore Grand Prix.

Last time out in Azerbaijan, McLaren had their worst weekend of the season, with Oscar Piastri crashing out on the first lap and Lando Norris slogging around the streets of Baku to finish just seventh.

Piastri had started some way back on the grid, after hitting the wall in a drizzle-affected qualifying session, which also saw Norris compromise his own hot lap by overcooking a corner.

However much Norris will rue missing a chance to take a big chunk out of his team-mate's championship lead, he is now back within one race win of his rival – with a chaotic-looking weekend ahead.

Singapore Grand Prix weather forecast

Friday, October 3 - FP1 and FP2

If Friday's forecast is anything to go by (and it is), this is going to be a very unpleasant weekend to be driving an F1 car.

FP1 doesn't kick off on Friday until 5:30pm local time, at which point drivers can expect temperatures of around 29 degrees Celsius, which will feel like 37 degrees with a 68 per cent humidity rate.

There is also a chance of a thunder storm during FP1, and there is an 18 per cent chance of precipitation falling throughout the first practice session. It's not going to be a fun hour for the drivers.

The evening FP2 session will be a little cooler, starting at 9pm local time with temperatures dropping to 27 degrees Celsius - although it'll still feel like 36 in a muggy evening. Humidity will spike to 81 per cent, but the chance of rain falling will be less in the second session, down at eight per cent.

Saturday, October 4 - FP3 and Qualifying

After all that on Friday, Saturday's got to improve a bit, surely?

Sorry to disappoint. Temperatures will be even higher than Friday, reaching 31 degrees Celsius, which the atmospheric conditions will make feel like a whopping 40 degrees for FP3 which starts at 5:30pm local time. Rain won't be a problem for the drivers, however, currently sat at just a four per cent as the track basks in bright sunshine.

Race organisers have done a great job booking the weather though, because for Saturday evening's qualifying session at 9pm they're looking at zero per cent chance of rain. The most important session of the first two days, and the one with the best conditions for going really, really fast around the lizard-unsafe circuit.

It'll still be uncomfortably warm, up at 28 degrees Celsius and 74 per cent humidity, but compared to all the previous sessions it should be an absolute breeze.

Sunday, October 5 - Race

The Singapore Grand Prix will get underway at 8pm local time (1pm BST) on Sunday, avoiding absolutely scorching temperatures and likely rain early in the day.

Once again, the organisers have done a fantastic job booking the weather with whichever deity they've slipped a fiver to, with low winds, a zero per cent chance of any precipitation, and a positively reasonable 28 degrees Celsius forecast, although that will have a real feel of 37 degrees with 76 per cent humidity.

It's not even going to be particularly windy, with the wind set to be gently rustling the flags at a shade under five mph. Barely enough to make the steam coming off a cartoon pie deviate into a dog's nostrils.

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