HONOLULU (KHON2) -- It's an uncomfortable start to the holiday weekend with high humidity making it feel like it's 90-plus degrees.
"It's very hot," said Courtney Groat, an Oregon visitor who had a hiking reservation at Diamond Head Saturday afternoon. "There was barely any breeze in certain points, it feels like 100 something degrees."
Some University of Hawaii football fans even left the game after half-time due to the heat.
"Yeah I'm done, it's too hot," said football fan Jessica Eabes.
"The heat was harsh," said UH Manoa Junior Kayti Russell. "We immediately sat down and was like ugh it's so hot, and we were burning up, we looked for water for 20 minutes and finally found a concession stand, but everyone was sold out."
Visitors and residents were seen trying to keep cool as humidity soars due to tropical cyclone Gilma dissipating north of the state.
"That brought a lot of humid and moist air to the state, so the heat index is really high in the low 90s," explained Genki Kino, National Weather Service meteorologist.
"The key thing is the dew point temps, those temps got into the low-to-mid 70s, basically when there’s higher humidity, moisture can’t evaporate off your skin so it just feels uncomfortable," he continued.
He said typically dew point temperatures in Hawaii are in the 60s. "Once we get into the low 70s, and into the mid-70s, it's kind of like Miami in the summer."
And the heat isn't done just yet.
"We’re going to get the remnant moisture of Hector that’s moving in tonight, so that’s going to keep the dew points high, it’s still going to feel muggy through Sunday and then once Hector remnant moisture moves away, we should return to normal trades on Monday," Kino said.
He said people should try and keep cool at night too because the overnight temperatures are not doing any cooling off.
While humidity can keep your skin hydrated, it can cause excessive sweating which can lead to dehydration, something doctors are concerned about this holiday weekend.
"When it's humid and hot, people tend to lose a lot of fluids," explained Dr. Jaimie Tom, John A. Burns School of Medicine. "As soon as you step out of the house you're starting to sweat."
"When you start to get thirsty that's a late sign of being dehydrated, so you really do have to start preparing the night before making sure you're drinking fluids ahead of time, not just water you have to replace the electrolytes."
As an ER physician, she said she sees a lot of heat-related illnesses like heat exhaustion and heat stroke.
"Oftentimes people will start to feel lethargic, muscle weakness, nausea, vomiting, headache," she explained. "Get them in the shade, spray them down with mist or a towel, or circulating the air, blowing the fan, helps cool down the body a little quicker."
She said if you see someone become confused or delirious take them to a hospital right away.
The beach is a good way to cool people down this weekend, but bring lots of water and wear sunscreen. And people who want to hike this weekend should bring plenty of water with them.
"Number one tip is to make sure you have water, stay hydrated, if you came into the park and you consumed it before your hike, we have two refill stations so be sure to refill your water bottle," explained Preston Taylor, Pacific Historic Parks assistant supervisor at Diamond Head State Monument visitor center.