The summer heat is coming a few days early this year.

The National Weather Service issued a heat advisory Sunday and is expected to repeat it today and perhaps even Tuesday as temperatures climb toward 100 degrees and heat indices come in somewhere between 106 and 110 degrees.

That heat could just be a harbinger of the next several weeks. Steven B. Taylor, senior forecaster at the National Weather Service, said late June through the early part of August is when the weather patterns seem most conducive to excessive heat.

Here are a few tips on how to avoid the heat because -- let's be honest -- you can't really beat it.

Safety tips

--Reduce strenuous activity until the coolest times of the day, usually early morning.

--Wear lightweight and light-colored clothes.

--Drink water or nonalcoholic, decaffeinated fluids.

--Stay in air-conditioned places. No-brainer.

--Don't pick now to work on your tan.

Killer cars

The National Weather Service is making a push this year to inform

everyone not to leave pets, children or adults inside a parked car during excessive heat. Even with the windows down, a car sitting in 80-degree heat can have an interior heat of 123 degrees within an hour.

Before buckling your child in, make sure the safety belt and buckles aren’t too hot, and never leave a child unattended.

For more information, see this story: Efforts aim to reduce deaths from kids left in hot cars

When the temperature is above 90, some experts suggest leaving your thermostat set at about 79 so that your air conditioner isn’t overworked.

Heat exhaustion can cause heavy sweating, weakness, cold, pale and clammy skin. To remedy this, get out of the sun, loosen clothes and apply cool, wet cloths. Drink water.

Heat stroke is noted by a body temperature of 106 degrees or higher with hot, dry skin and a rapid, strong pulse. This is a severe medical condition and can be fatal. Seek emergency medical treatment immediately.

If you water your grass during extreme heat, do it in the early morning.

It’s better to give a good soaking occasionally than a light sprinkling more often.

Avoid mowing. Grass is not growing, and you’ll just burn up.

The city of Charleston has rules governing horse carriage tours. Basically, when it is 98 degrees or hotter outside, the tours are shut down. As hot weather approaches, horses’ temperatures are monitored and if any of the animals has a temperature of greater than 104 degrees, it is taken off duty.

For more on the carriage horses, see our story: Patrol that cleans up after carriage horses is used to handling the dirty work.