Four fire engines and around 25 firefighters tackled a grass fire near Wellington Road in Hampton Hill.
Around two hectares of grass was damaged by fire. There were no reports of any injuries.
The Brigade’s 999 Control officers took 11 calls to the blaze.
A London Fire Brigade spokesperson said: “Whilst we have seen some rainfall, we’re asking Londoners not to be complacent. When the ground is very dry it’s harder for water to be absorbed, which is why we have seen flash flooding as the water pools on the surface, but it also means that grasslands are still parched and the smallest of sparks could cause a fire.
“Please continue to help us prevent grass fires by not barbecuing on open land, clearing away rubbish and glass and safely disposing of cigarettes.”
The Brigade was called at 1524 and the fire was under control by 1636. Fire crews from Feltham, Kingston and Twickenham fire stations attended the scene.