Bermuda grass thrives in areas where summers are hot. As long as the lawn receives enough water, Bermuda grass will stay green through 100-degree plus temperatures. Starting a lawn from seed during the blasting heat is a challenge. Preparation and patience are key factors to success. An automatic watering system is nearly a necessity in hot weather, especially if your lawn covers a large area.
Dig the area where the Bermuda grass is to be planted. If patches in the lawn are being reseeded, remove the soil in the patches and replace with fresh soil. That will help get rid of any fungicides or diseases which may have killed the grass in the first place. If the entire yard is being reseeded, rent a tiller to avoid excessive hand-digging.
Add a fertilizer high in nitrogen and mix well into the soil. Rake the area smooth. Remove rocks. Water until the soil is soaked down to a depth of 6 inches. Even out any high or low areas. Let the soil drain a bit so the area isn't muddy when you walk on it.
Broadcast the Bermuda seed over the area by hand if it's a small area or with a seeder for a large area. The seeder does a better job of evenly distributing seed. How much seed you'll need depends on whether the Bermuda seed is hulled or unhulled and if it's coated or uncoated. Add 10 percent more to the amount suggested to make up for the seeds that won't sprout or will die early because of the heat.
Cover the seed with top soil or compost. This is necessary to keep the seeds and seedlings from drying out in the high temperatures. The top soil also protects the seeds from the birds.
Water the seeds four times a day with a fine spray for 10 to 15 minutes. In high temperatures this step is critical, as you can't allow the seeds to dry out because they won't germinate. Once the seeds have sprouted decrease the watering to three times a day, then two times, and finally to once a day. Seedlings that are water-stressed won't recover.