My brakes are sqeaking a bit when it's raining. Should I go and have it checked, or is this normal?

Thanks for choosing FixYa. Water and dirt can get on your pads and get caught up causing sqeaking. It can also be a bad break pad. It would be best if you take it off and check it. Consider getting flaps if you don't have them already to block water and rocks.

Assuming you have checked for wear or damage, some brake noise on initial application each day is normal. If the brakes are wet then even more so. It is usually the rear drum brakes that generate the noise, although the front brakes could as well. It is due to moisture and a light haze of rust building up on the drum and rotor surface. The first couple of applications tend to burn off this overnight coating, and all is good for the balance of the day. One other thing that can lead to brake noise is improperly installed brake pads. Most modern disc brake setups use shims behind the pads to eliminate any air gap between the pad and the caliper. If the shims are left out this can lead to the pads vibrating on application, resulting in the high pitch squeal. Make sure that pad shims are installed on your front brakes. Normally this would lead to noise all the time, but would be more sensitive when wet.

If the car is old/a bit older from when you first bought it,Then you will have natural wear. You have brake dust on it, this is normal. If this gets wet it will rust so fast you would not beleave me. Put some wet wire wool on the drainer and see for yourself how long it takes to leave rust marks!!!! If you hear any metal scrape at all you need to replace them straight away. You should get your brake pads cheked soon. Dont go to a garage unless you can afford to. they will just say they need replacing, no matter what and charge you and probably leave the old ones on. If you know someone or trust your regular garage go to them.