Take a look at the weather predictions of the location of your interest. Here is a link where you find the weather of any location in the world: bit.ly/World_Weather.
Take a look at the weather predictions of cities surrounding your location of interest. You might find interesting activities to do around until a better weather shows up.
Make an informed decision. If it rains the whole day, do you still want to visit that location? If you answer yes to this question, you better equip yourself adequately. This can be done in many ways. First, you can get yourself a poncho. A rain poncho allows you to do physical activities without any limitations (nothing keeping your hands occupied as an umbrella would do). For a great poncho, I am not shy saying ours is awesome. Take a look at it just here: raiiny.com. In second, give a call to the service you want to attend to. If its a festival, simply ask if there are any covers. If it’s a physical activity, inquire the limit to what are the cancellation policy.
Make sure that everything including your money or passport is well & deeply hidden. Our poncho offers you enough space to keep your backpack or purse under.
Avoid suede products. Suede shoes per example do not react well to rain. You could get yourself caoutchouc boots which are extremely rain resistant. If not enough fashionable, leather shoes could be a good option. If you’re scared to damage them Slip on rain galoshes are for you. You will find in the following link the one that has most reviews: Best waterproof overshoes.
Here is a little DIY trick: carry grocery plastic bags. Those are perfect to protect anything fragile to rain.
Any rain gear is protective towards the water. BUT any of them has their limit. It would be a great idea to take with you extra clothes. Extra socks should be the first thing you think of. It’s always hard to protect feet at 100% and in extreme conditions, even when they are made of GORTEX, you may find yourself in a situation where your feet are wet.