Sepang Weather Watch: Showers Friday, Storms Saturday, Drier Sunday?
Early forecasts point to afternoon rain on Friday, thunderstorms on Saturday and a drier race day for the Bahrain GP at Sepang.
Anyone who remembers Formula 1 at Sepang will know that the weather can change a race in a matter of minutes. With the Formula 1 Gulf Air Bahrain Grand Prix less than a week away, the first forecasts for 2–4 October are now available, and they suggest fans should be ready for rain.
Forecasts this far out can change, so treat these as an early guide rather than a promise.
Day-by-day outlook
Based on AccuWeather's extended forecast for Sepang International Circuit, checked on Saturday 26 September:
| Day | Session highlights | Forecast | Chance of rain | High / low |
|---|---|---|---|---|
| Fri 2 Oct | FP1 12.30pm, FP2 4pm | Mostly cloudy, some afternoon rain | 62% | ~33°C / ~24°C |
| Sat 3 Oct | FP3 12.30pm, Qualifying 4pm | Cloudy, thunderstorms especially late in the day | 72% | ~32°C / ~23°C |
| Sun 4 Oct | Race 3pm | Clouds and some sun | 25% | ~33°C / ~23°C |
The UK Met Office forecast, updated on the morning of 26 September, also points to showers on Friday 2 October, with a high of around 31°C, a "feels like" temperature of about 33°C and high UV levels.
What it could mean on track
- Friday practice: afternoon rain could affect FP2, the main session teams use for long-run tyre tests. That would leave teams with less dry running on a circuit most of the current drivers have never raced on.
- Saturday qualifying: qualifying starts at 4pm, and the forecast has storms building later in the day. A red flag, delay or wet session could shake up the grid.
- Sunday race: the lower chance of rain is good news for fans, but in tropical weather a short, heavy shower can still arrive in the afternoon.
Qualifying and the race are both held in the afternoon. Sepang management confirmed earlier this year that it is not a night race, despite confusion over times shown on the F1 app.
How to prepare if you're going
- Rain gear: bring a light poncho. Umbrellas can block views for other people in grandstands and hillside areas.
- Sun protection: even on a cloudy day, UV levels are high. Use sunscreen, a cap and sunglasses.
- Water: with highs in the low 30s and high humidity, drink water regularly, especially in uncovered areas.
- Plan for lightning: if thunderstorms arrive on Saturday, follow marshals' and circuit staff's instructions and move to shelter.
- Protect your phone: a zip-lock bag or waterproof pouch is cheap insurance.
- Check again on Thursday: forecasts are more accurate two or three days out. MetMalaysia will issue warnings if storms are expected.
Why rain at Sepang matters
Sepang's history is full of races affected by heavy afternoon rain, and the circuit has a lot of long, fast corners where grip levels matter. With Pirelli bringing its C2 to C4 tyres, a wet or mixed weekend would put intermediate and full wet tyres into play and make strategy much harder to predict.
Key takeaways
- Early forecasts show a 62% chance of rain on Friday and 72% on Saturday.
- Thunderstorms are forecast late on Saturday, around qualifying time.
- Sunday's race day currently looks drier, at around 25% chance of rain.
- Temperatures are expected to reach the low 30s°C all weekend.
- Forecasts can change, so check again closer to the weekend.
FAQ
Will it rain during the Sepang F1 race? Early forecasts give Sunday 4 October around a 25% chance of rain, lower than Friday or Saturday, but that can change.
What time is qualifying? Qualifying is on Saturday 3 October at 4pm, when forecasts suggest thunderstorms could develop.
Is the Sepang race held at night? No. The race starts at 3pm on Sunday 4 October.
Sources: AccuWeather, Met Office, The Rakyat Post, Malay Mail