July is the peak of the summer season in Louisiana, with heavy rainfall amid many sunny days. Day temperatures are in the hot 88°F (31.1°C) to 94°F (34.4°C) range, while nights are warm between 70°F (21.1°C) to 77°F (25°C). Mercury readings above 110°F (43.3°C) are rare, yet the summer vacation brings many tourists to the state. Natchitoches in central Louisiana sees scorching heat in the 75°F (23.9°C) to 94°F (34.4°C) range. The 6" (152mm) to 8" (203mm) of rainfall is mostly a result of thunderstorms that bring heavy showers. Air-conditioners are necessary, with the humidity often above the 80% mark. Hunting and fishing are popular, as is camping in the open during the nights. Charter boats make deep sea fishing easy in the Grand Isle. Mornings are better for swimming as the ocean waters reach a peak of 84°F (28.9°C) in the afternoons. The ultraviolet radiation of the sun reaches dangerous proportions in the blistering heat. Keep an eye on the weather for tropical cyclones in July in Louisiana.