Summer Golf Tips: Hydration and Heat Safety on the Course

How to play golf safely in summer heat: hydration, sunscreen, heat exhaustion signs, and what member data shows (the same golfers scored 1.2 better in summer).

By Flighting Editorial Team 2026-05-28

To play golf safely in summer heat, start the round hydrated, drink on every tee instead of waiting for thirst, book the earliest tee time you can, wear SPF 30 or higher and reapply at the turn, and stop at the first signs of heat illness: dizziness, heavy sweating, cramps, nausea or a headache that won't quit.

How much water should you drink playing golf in the heat?

There's no single number that fits every golfer, so be wary of exact ounce-per-hole rules. Body size, sweat rate, humidity and whether you walk or ride all change what you need. The CDC's heat guidance keeps it simple: drink plenty of fluids, carry a water bottle and refill it through the day, and use your urine as the gauge. Light yellow or clear usually means you're drinking enough.

On the course, that turns into a routine:

• Start hydrated. Drink a full bottle of water in the hour before your tee time. Catching up from behind on the 6th hole doesn't work.
• Drink on every tee box. A few sips while your group hits is easier than remembering to drink when you feel thirsty.
• Refill at every station or at the turn. If the course has water coolers, use every one. If it doesn't, carry two bottles.
• Add electrolytes on long, sweaty days. For a full 18 in high heat, alternating water with a sports drink replaces some of the salt you sweat out.
• Skip the alcohol until you're done. It doesn't help you stay hydrated, and it won't help your putting either.

Walking makes all of this more important. Carrying or pushing a bag for 18 holes in the sun is real exercise, so walkers should drink more and think hard about a cart for midday summer rounds.

What are the signs of heat exhaustion on the golf course?

Heat illness comes in stages, and the early ones are easy to brush off as "just a bad back nine." The CDC's page on symptoms of heat-related illness sets out what to look for and what to do:

On a golf course, "somewhere cool" usually means the clubhouse or an air-conditioned car, not a shaded bench. Know where the nearest building is on the back nine, and keep the pro shop number in your phone. If a playing partner gets confused or faints in the heat, call for help and end the round for them. No score is worth it.

How do you protect your skin from the sun on the golf course?

A round of golf is four hours or more of open sky, so treat sunscreen as part of your gear. The American Academy of Dermatology's sunscreen guidance gives the specifics:

• Pick SPF 30 or higher that is broad-spectrum and water-resistant.
• Apply it before you leave for the course. Skin needs about 15 minutes to absorb it, so putting it on at the first tee leaves you exposed for the first hole or two.
• Use enough. Most adults need about 1 ounce, roughly a shot glass, to cover exposed skin, and at least a teaspoon for the face.
• Reapply every two hours and right after heavy sweating. At a normal pace, that's around the turn for most groups, and again late in the back nine.

Golf-specific misses: the backs of your ears, the back of your neck, the top of your lead hand if you wear one glove, and your scalp if you play in a visor. A wide-brimmed hat and a long-sleeved sun shirt cover more than sunscreen alone and don't wash off with sweat. Rub sunscreen off your palms or wash your hands before you grip a club, or your grip will slip.

Do golfers score worse in summer?

Our members don't. We compared the same golfers across seasons: 293 Flighting members with at least three 18-hole rounds in both March to May and June to August of 2026 (1,837 spring rounds and 2,949 summer rounds).

• Average spring score: 84.8
• Average summer score: 83.6
• Summer minus spring, per member: 1.2 strokes better
• Members who scored better in summer: 66.6%

That doesn't mean heat helps. Spring scores carry winter rust, and players who keep playing through summer tend to sharpen up. Play dates are stored by month, so we can't line rounds up with the actual temperature on the day. What the data does show is that summer rounds don't have to be a write-off.

We also looked for a heat fade, where the back nine falls apart late in the day. It doesn't show up in the totals. On hole-by-hole cards, the back nine scored slightly better than the front in every season:

These are adjusted hole scores, capped at net double bogey, and each season has a different mix of members and courses, so compare rows with care. The front nine scored worse than the back in every season, which points at the opening holes, more than the heat, as the place to save strokes. A short routine like our golf stretches before a round fixes the stiff first few holes in any season.

How does hot weather change how the golf ball flies?

Warm air is less dense than cool air, so the ball meets less drag and carries a little farther on a hot day than on a cold spring morning. The change is modest. Watch where your shots actually land on the first few holes before you start clubbing down across the board.

The ground changes more than the air. Summer fairways and greens are often firmer and faster, which means:

• More roll off the tee. A drive that stops in the fairway in April can run through a dogleg in July. On tight holes, a hybrid or fairway wood may finish in the same place as your driver.
• Land approaches short. Pick a landing spot a few yards short of the flag and let the ball release, especially with mid and long irons.
• Faster putts as the day goes on. Greens can speed up as they dry out. Spend five minutes on the practice green before you tee off and pay attention to downhill speed.

Altitude adds to the effect. Desert courses at elevation, like the public courses in St. George, Utah, combine heat, thin air and firm turf, so check carry yardages with care there.

When is it too hot to play golf?

There's no official cutoff for golf, but the warning signs are clear. The CDC advises scheduling outdoor activity for the coolest parts of the day and, on high-risk heat days, taking breaks and staying in the shade as much as you can. Check the local heat forecast the night before a round and change plans when it calls for extreme heat.

• Book the first tee times. A 6:30 start in July finishes before the hottest part of the afternoon.
• Play twilight, carefully. Late tee times avoid midday sun, but heat can linger into early evening on hot days. Check the forecast high and the overnight low.
• Play nine instead of eighteen. On a day when the forecast is extreme, nine holes at dawn beats 18 in the afternoon.
• Ride instead of walk. It takes most of the physical load off without changing the golf.

If you're unsure how long you'll be out there, our guide to how long a round of golf takes helps you plan the finish time before you book.

What should you eat during a summer round?

Heat blunts your appetite, so it's easy to go four hours on a breakfast bar. Small, regular snacks keep your energy and focus steady:

• Eat something every 4 or 5 holes. A banana, a handful of nuts, or a granola bar is enough.
• Bring salty snacks on very hot days. Pretzels or salted nuts replace some of what you sweat out.
• Keep the turn light. A sandwich or fruit is enough; save the big meal for after the round.

If you want to see how your own scores move through the season, Flighting keeps your rounds by month so you can tell whether summer is helping or hurting your game.

Frequently Asked Questions

How much water should I drink during a round of golf in the heat?

Enough to keep your urine light yellow or clear, which the CDC uses as a simple hydration check. In practice, start with a full bottle before you tee off and take a few sips on every tee.

What are the signs of heat exhaustion while golfing?

Heavy sweating, cold and clammy skin, a fast weak pulse, nausea, dizziness, headache, cramps and fainting. Stop playing, get somewhere cool, and seek medical help if symptoms get worse or last more than an hour.

How often should golfers reapply sunscreen?

Every two hours and right after heavy sweating, per the American Academy of Dermatology. For most groups that's around the turn and again late in the back nine.

Does the golf ball go farther in hot weather?

A little. Warm air is less dense, so the ball carries slightly farther, and firm summer fairways add roll on top of that.

Do golfers score worse in summer?

Not in our data. The same 293 Flighting members averaged 83.6 in June to August and 84.8 in March to May, and 66.6% of them scored better in summer.

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